Small SSH config change becomes a massive time saver when using a jump (bastion) host

Published on March 22nd 2023 - Listed in Linux - 2 comments

Unable to connect with PuTTY using key authentication after distribution upgrade to Ubuntu 22.04

Published on March 21st 2023 - Listed in Linux Windows - 0 comments

Using update-alternatives to avoid /usr/bin/python: bad interpreter and point python to python3

Published on March 16th 2023 - Listed in Linux Python - 0 comments

Debian distribution upgrade to Bullseye failed with Systemd lookup error: undefined symbol: seccomp_api_get

Published on March 12th 2023 - Listed in Linux LXC Systemd - 0 comments

LXC container unable to start: Failed to setup cgroup limits for container

Published on March 9th 2023 - Listed in LXC Linux - 0 comments

chroot: failed to run command bash: Exec format error

Published on February 23rd 2023 - Listed in Linux - 0 comments

Error during Ubuntu dist-upgrade to 22.04: ubuntu-server depends on multipath-tools

Published on February 22nd 2023 - Listed in Linux Ubuntu Systemd - 0 comments

Automatic modprobe (enable Linux Kernel module) at boot time

Published on February 14th 2023 - Listed in Linux Kubernetes Systemd - 0 comments

First steps with Rocket.Chat: Watch the holes (bugs)!

Published on February 11th 2023 - last updated on February 11th 2023 - Listed in Cloud Linux - 0 comments

(Performance) Comparison of different compression methods used in combination with mysqldump

Published on February 8th 2023 - Listed in MySQL MariaDB Databases Linux - 0 comments

How to use check_esxi_hardware / CIM access without root user on ESXi

Published on February 6th 2023 - Listed in VMware Virtualization Linux - 0 comments

Unable to install nagios-plugins-all on RHEL 8 with EPEL repository enabled

Published on January 31st 2023 - Listed in Linux - 0 comments

Workaround for negated (exception) iptables rules with multiple sources or destinations

Published on January 30th 2023 - Listed in Network Linux Security - 0 comments

Figuring out the real (and combined) memory usage of forked processes on Linux: Not the easiest thing

Published on January 26th 2023 - Listed in Linux - 0 comments

The pain to install VMware ESXi 8 in a virtual machine (no network adapters detected and no hard disk found)

Published on December 29th 2022 - last updated on December 29th 2022 - Listed in VMware Virtualization KVM Linux - 0 comments

New monitoring plugin: check_sftp to monitor SFTP server(s)

Published on December 27th 2022 - Listed in Monitoring Linux Network Cloud - 0 comments

How to use SFTP password authentication in a Bash script using non-interactive (batch) mode

Published on December 23rd 2022 - Listed in Coding Bash Linux Shell - 0 comments

The problem using output redirection >/dev/null as a variable in Bash Shell script

Published on December 22nd 2022 - Listed in Coding Bash Linux Shell - 0 comments

How to solve Citrix Workspace SSL error (You have not chosen to trust...) caused by missing Root CA certificates

Published on December 19th 2022 - last updated on December 20th 2022 - Listed in Linux SSL TLS Security Virtualization - 0 comments

How to verify and monitor Tinyproxy as a HTTP forward proxy

Published on December 15th 2022 - Listed in Monitoring Proxy Linux Internet Network - 0 comments

Analyzing and solving performance issues in Ubuntu VM after OS upgrades inside VM and on physical host

Published on December 9th 2022 - last updated on December 10th 2022 - Listed in KVM Linux Virtualization Kubernetes Docker - 0 comments

Postfix process (and listener) not running after service restart: The mystery of the master.lock file

Published on December 7th 2022 - Listed in Mail Linux - 0 comments

How to manually update the security feeds in GVM (Greenbone Vulnerability Management)

Published on November 29th 2022 - last updated on February 27th 2023 - Listed in Security Linux - 4 comments

Replacing my old webcam (Creative VF0700) with a new model (Foscam W81) on Linux Mint

Published on November 24th 2022 - Listed in Personal Linux Multimedia Hardware - 0 comments

How to fix Linux Mint logo (icon) not showing up as Cinnamon Menu button

Published on November 18th 2022 - Listed in Linux - 0 comments

How to fix the missing keymaps in Debian and Ubuntu (localectl: Failed to read list of keymaps)

Published on November 15th 2022 - Listed in Linux - 0 comments

Citrix Workspace error after Ubuntu upgrade: Keyboard mapping file is invalid or does not exist

Published on November 14th 2022 - last updated on November 14th 2022 - Listed in Linux - 0 comments

How to install Citrix Workspace app (Citrix Receiver) on Ubuntu based Linux

Published on November 11th 2022 - Listed in Linux Virtualization - 0 comments

Kubernetes cluster (initiated with kubeadm) not starting after a reboot

Published on November 2nd 2022 - last updated on February 15th 2023 - Listed in Kubernetes Linux Containers - 0 comments

How to rotate an image on the Linux command line using imagemagick (convert)

Published on October 4th 2022 - Listed in Graphics Multimedia Linux - 0 comments

Ansible playbook task fail: Invalid variable name in register specified

Published on September 28th 2022 - Listed in Ansible Linux - 0 comments

otrs.Daemon.pl DateTime::TimeZone errors flooding OTRS server after system updates

Published on September 27th 2022 - Listed in OTRS Linux Perl - 0 comments

LXC container with macvlan interface not starting after unclean stop

Published on September 16th 2022 - Listed in LXC Linux Network - 0 comments

HAProxy: How to temporarily disable a backend server using the command line and the stats socket

Published on September 13th 2022 - Listed in HAProxy Linux - 0 comments

How to fix broken apt dist-upgrade when /var is out of disk space

Published on September 9th 2022 - Listed in Linux - 0 comments

Upgrading Seafile fails at Python module installation with pip3

Published on September 8th 2022 - Listed in Seafile Linux Python - 0 comments

Ansible and the problem to reset the MySQL root password (unable to connect to database, check login_user and login_password are correct)

Published on August 18th 2022 - Listed in Ansible Linux MySQL MariaDB Databases - 0 comments

Unable to remove (ksh) package in Ubuntu 18.04 Bionic due to missing binfmt-support package

Published on August 11th 2022 - Listed in Linux - 0 comments

Icinga2 satellite stopped executing checks after Debian upgrade from Buster to Bullseye

Published on August 10th 2022 - Listed in Icinga Monitoring Linux - 1 comments

Postfix rejects all incoming e-mails with message: blocked using zen.spamhaus.org; Error: open resolver

Published on August 4th 2022 - last updated on August 11th 2022 - Listed in Mail Internet Security Linux - 2 comments

Dell OpenManage shows degraded storage backplane, but is it?

Published on July 27th 2022 - Listed in Monitoring Hardware Linux - 0 comments

After Plesk upgrade: logrotate error shows duplicate log entry for /var/log/plesk/panel.log

Published on July 22nd 2022 - Listed in Linux - 0 comments

Error: OID not increasing when parsing SNMP output of Checkpoint VSX

Published on July 15th 2022 - Listed in Linux Security Monitoring - 0 comments

How to enable remote (syslog) udp logging in Shelly IoT device

Published on July 8th 2022 - Listed in Monitoring Hardware Linux - 0 comments

How to show the full (historical) content of a screen session in Linux

Published on July 6th 2022 - Listed in Linux - 0 comments

How to detect and fix (mitigate) SSL/TLS renegotiation DOS vulnerability in Postfix

Published on June 20th 2022 - Listed in Mail Internet Security SSL TLS Linux - 0 comments

How to set up log forwarding in KeyCDN and log events to a dedicated log file with Rsyslog

Published on June 17th 2022 - last updated on June 17th 2022 - Listed in Linux Cloud Network Internet - 0 comments

How to properly wipe data from a replaced raid drive and solve couldnt open /dev/sdX for write - not zeroing

Published on June 15th 2022 - Listed in Hardware Linux - 0 comments

Could NOT find OpenSSL error while compiling cmake from source

Published on June 10th 2022 - Listed in Linux - 1 comments

How to append additional key value pair to a JSON object in MySQL or MariaDB

Published on May 13th 2022 - Listed in MySQL MariaDB Database Linux Coding - 0 comments

How to list only a specific EC2 instance filtered on a tag (name) in AWS cli

Published on May 4th 2022 - Listed in AWS Cloud Linux - 0 comments

IMHO: Toshiba hard drives are underrated (expanding NAS with larger disks)

Published on April 23rd 2022 - last updated on April 25th 2022 - Listed in Hardware Linux Personal - 0 comments

How to enable Wake On LAN (WOL) on ASRock motherboard in Linux Mint

Published on April 22nd 2022 - last updated on December 29th 2022 - Listed in Hardware Linux - 0 comments

AWS: How to extend an EBS volume on EC2 instance and grow Linux LVM and file system without downtime

Published on April 21st 2022 - last updated on May 4th 2022 - Listed in AWS Cloud Linux - 0 comments

LXC containers with static IP in config not working anymore after Debian Bullseye 11.3 update

Published on April 12th 2022 - Listed in LXC Systemd Linux - 0 comments

How to use Perl Net::SNMP v3 authentication with newer SHA (SHA256, SHA512) protocols

Published on April 8th 2022 - Listed in Perl Monitoring Linux - 0 comments

Unable to remove old Python version in LXC container after Debian dist upgrade (update-binfmts error workaround)

Published on March 31st 2022 - Listed in LXC Linux - 0 comments

Nagios NRPE and the different payload (packet, buffer) sizes using cross-version communication

Published on March 30th 2022 - last updated on March 31st 2022 - Listed in Nagios Icinga Monitoring Linux - 0 comments

Unable to compile from source due to configure error: Cannot find ssl headers

Published on March 30th 2022 - Listed in Linux - 0 comments

dpkg: error processing package libglib2.0-0:i386 (--configure) on APT dist upgrade

Published on March 28th 2022 - Listed in Linux - 2 comments

How to renew expired GPG key (EXPKEYSIG 3F01618A51312F3F) for GitLab APT repositories

Published on March 24th 2022 - Listed in Linux - 3 comments

MySQL APT repositories: An error occurred during the signature verification (public key is not available)

Published on March 22nd 2022 - Listed in MySQL Linux - 2 comments

check_http and OpenSSL 1.1.1 - an evil combo due to backward incompatibility with older OpenSSL versions?

Published on March 17th 2022 - last updated on March 23rd 2022 - Listed in TLS SSL Security Monitoring Linux - 0 comments

MySQL / MariaDB mysqldump error: Cannot load from mysql.proc. The table is probably corrupted (1728)

Published on March 17th 2022 - Listed in MySQL MariaDB Database Linux Backup - 1 comments

How to use PHP built-in web server and disable access logging

Published on February 28th 2022 - Listed in PHP Linux - 0 comments

Technical analysis of Wordpress hack with PHP script lock360.php as running process (reading PHP code from memory)

Published on February 22nd 2022 - last updated on January 31st 2023 - Listed in PHP Security Linux Hacks Wordpress - 5 comments

Cannot remove: Permission denied to delete file on local Linux file system, even with write permissions

Published on February 10th 2022 - Listed in Linux Unix - 3 comments

Troubleshooting AWS EC2 instance with lost network connectivity (after upgrade to Ubuntu 20.04)

Published on February 9th 2022 - Listed in AWS Cloud Linux Network Systemd - 0 comments

IP address filtering in Logstash: To cidr, or not to cidr?

Published on February 1st 2022 - Listed in Logstash ELK Linux Network - 0 comments

How to change PHP version on the command line (CLI) using alternatives

Published on January 31st 2022 - Listed in PHP Linux - 0 comments

Properly upgrading both CouchDB and Operating System (Ubuntu): The order is important!

Published on January 27th 2022 - Listed in CouchDB Linux - 0 comments

mysqldump: Error 2013: Lost connection to MySQL server during query when dumping table

Published on January 26th 2022 - last updated on January 28th 2022 - Listed in MySQL MariaDB Database Linux Backup - 0 comments

Quick and easy log listener with Logstash and local file output

Published on January 25th 2022 - last updated on March 29th 2022 - Listed in Logstash ELK Linux Network - 0 comments

Another Western Digital Green SSD dead without any pre-fail indication

Published on January 8th 2022 - last updated on January 12th 2022 - Listed in Hardware Linux - 1 comments

How to ignore (discard) certain syslog messages in rsyslogd using filters

Published on January 7th 2022 - Listed in Linux ELK - 2 comments

Unable to mount CIFS share on Linux: mount error(13): Permission denied (cifs_mount failed w/return code = -13)

Published on January 4th 2022 - Listed in Linux Windows Samba - 8 comments

LVM warning: Device for PV [...] not found or rejected by a filter

Published on January 4th 2022 - Listed in Linux - 0 comments

Kubernetes node under disk pressure - but there is enough disk space in /var/lib/docker!

Published on December 15th 2021 - Listed in Rancher Kubernetes Docker Cloud Containers Linux - 0 comments

mdadm: no raid-devices specified error shows up when creating new raid array (device)

Published on December 9th 2021 - Listed in Linux - 0 comments

How to use AWS command line (CLI) with Google Authenticator as virtual MFA device

Published on November 22nd 2021 - Listed in AWS Security Linux Cloud - 0 comments

Rancher managed Kubernetes (Docker) node unable to pull images after clean-up

Published on November 18th 2021 - Listed in Rancher Kubernetes Docker Cloud Containers Linux - 0 comments

AWS EC2 instances not booting after Ubuntu distribution upgrade (grub install to wrong NVMe device)

Published on November 12th 2021 - Listed in AWS Cloud Linux - 0 comments

MySQL / MariaDB not logging errors (log_error file empty) on Ubuntu

Published on October 20th 2021 - Listed in MySQL MariaDB Database Linux - 0 comments

update-initramfs warning: initramfs-tools configuration sets RESUME but no matching swap device is available

Published on October 15th 2021 - Listed in Linux - 5 comments

Lets Encrypt Root CA expiry (server certificate verification failed): Make sure to remove DST Root CA X3!

Published on October 7th 2021 - Listed in Internet TLS Security SSL Linux - 8 comments

PHP errors Class Locale and DOMImplementation not found after Icingaweb 2 upgrade

Published on September 29th 2021 - Listed in Icinga Monitoring PHP Linux - 2 comments

Debian 11 (Bullseye) boot and freeze issues with Kernel panics on HP Proliant DL380 G7 servers

Published on September 16th 2021 - Listed in Hardware Linux - 7 comments

When mount stops working in Linux (systemd: mount unit is bound to inactive unit)...

Published on September 7th 2021 - Listed in Systemd Linux - 5 comments

Problems with plugins (apps) after Confluence upgrade due to plugin cache

Published on September 7th 2021 - Listed in Atlassian Linux - 0 comments

Debian 11 (Bullseye) and the problem with bond (bonding) LACP interfaces

Published on September 1st 2021 - last updated on September 15th 2022 - Listed in Linux Hardware Network - 12 comments

Crackling, buzzing sounds and bad audio quality in Linux Mint finally solved!

Published on August 11th 2021 - last updated on July 5th 2022 - Listed in Multimedia Linux Hardware - 8 comments

VLC unable to play music from Samba share (Your input cant be opened: unable to open the MRL)

Published on August 10th 2021 - Listed in Multimedia Linux Samba - 0 comments

MYSQL_ATTR_INIT_COMMAND errors showing up in Icingaweb2 after OS (and PHP) upgrade

Published on July 27th 2021 - Listed in Icinga Monitoring PHP Linux - 1 comments

How to backup KVM virtual machines using virt-backup.pl script

Published on July 8th 2021 - last updated on July 9th 2021 - Listed in KVM Virtualization Linux Backup - 3 comments

APT repository changes its Suite value from stable to oldstable: This must be accepted explicitly before updates for this repository can be applied

Published on July 6th 2021 - last updated on April 22nd 2022 - Listed in Linux Security - 0 comments

Analysis of packet losses of KVM guest Ubuntu 18.04 on Debian 9 host (interface model type)

Published on July 5th 2021 - Listed in Linux Network Virtualization KVM - 1 comments

Problem with libvirt-daemon-system package during Debian upgrade

Published on July 2nd 2021 - Listed in Linux Virtualization KVM - 0 comments

Unable to start container using LXC 4.0 on Ubuntu 20.04 LTS (failed to mount: permission denied)

Published on June 25th 2021 - Listed in LXC Linux - 0 comments

Unable to create LXC container due to ERROR: Unable to fetch GPG key from keyserver (key server down)

Published on June 22nd 2021 - last updated on July 8th 2021 - Listed in Linux LXC Cloud - 0 comments

How to install Dell OMSA (OpenManage Server Administrator) 10.x on Ubuntu 20.04

Published on June 21st 2021 - last updated on August 31st 2022 - Listed in Hardware Linux Monitoring - 4 comments

How to setup Raspberry Pi Zero without mouse and keyboard attached to micro USB

Published on June 16th 2021 - Listed in Hardware Linux Network - 0 comments

How to use Linux hw-probe behind a HTTP Proxy (for probe upload to linux-hardware.org)

Published on June 11th 2021 - last updated on June 15th 2021 - Listed in Linux Perl Coding Hardware - 0 comments

How to solve apt error server certificate verification failed

Published on June 4th 2021 - last updated on October 7th 2021 - Listed in Linux TLS Security - 1 comments

WARNING: PV /dev/sdxx in VG vgname is using an old PV header, modify the VG to update

Published on June 2nd 2021 - last updated on March 9th 2023 - Listed in Linux - 1 comments

Weird directory permissions after directory was created by Ansible playbook

Published on June 1st 2021 - Listed in Ansible Linux - 0 comments

Icinga 2 fails to upgrade package to 2.12.4 on a recently upgraded Ubuntu 18.04 Bionic (from Xenial)

Published on May 28th 2021 - Listed in Icinga Monitoring Linux - 0 comments

Nginx crashes after being reloaded twice (or more) on Ubuntu 20.04

Published on May 5th 2021 - Listed in Nginx Linux - 3 comments

Icinga 2 with MySQL IDO fails to start after Debian release (distribution) upgrade

Published on May 3rd 2021 - Listed in Icinga Monitoring Linux - 0 comments

How to import MariaDB apt repository key behind an outgoing HTTP proxy

Published on May 1st 2021 - Listed in Linux MariaDB Internet - 0 comments

How to solve HAProxy running into max open files limit (Proxy reached process FD limit)

Published on May 1st 2021 - Listed in HAProxy Systemd Linux - 1 comments

When is a Solid State Drive (SSD) really dead? An analysis on a Crucial MX 500 1TB SSD.

Published on April 27th 2021 - Listed in Hardware Linux Monitoring - 0 comments

LVM restore of logical volume not working: merging of snapshot will occur on next activation

Published on April 13th 2021 - Listed in LXC Linux - 0 comments

Seafile upgrade and Seahub start errors after upgrading from Seafile 7.0 to 7.1

Published on April 9th 2021 - Listed in Cloud Linux Seafile - 0 comments

Samba 4: getent passwd does not show Active Directory users, but wbinfo -u works fine

Published on March 31st 2021 - last updated on July 8th 2021 - Listed in Linux Windows Samba - 4 comments

Troubleshooting Windows client unable to join a Samba 4 Active Directory (Logon failure: unknown user name or bad password)

Published on March 30th 2021 - Listed in Linux Windows Samba - 0 comments

NRPE: Error - Could not complete SSL handshake after check_nrpe was upgraded from 2.x to 3.x

Published on March 25th 2021 - last updated on May 2nd 2021 - Listed in Monitoring Linux - 3 comments

Ansible stat.islnk in playbook fails with error: dict object has no attribute islnk

Published on March 24th 2021 - Listed in Ansible Linux - 0 comments

Monitoring of Samba (CIFS) share stops working with error: Result from smbclient not suitable

Published on March 18th 2021 - Listed in Linux Windows Monitoring Samba - 0 comments

After upgrading Linux Mint (Ubuntu), attachments in KeePass 2 do not open anymore: Access denied

Published on March 15th 2021 - Listed in Linux Security - 0 comments

Hardware upgrade: ASRock B550 and AMD Ryzen 5 3600 on Linux Mint 20.1 with Kernel 5.8

Published on March 12th 2021 - last updated on August 7th 2021 - Listed in Personal Hardware Linux - 2 comments

After upgrading to Linux Mint 19, all text characters are now shown as bracket boxes

Published on March 11th 2021 - Listed in Linux Personal - 0 comments

Important Nginx configuration changes after upgrading Ubuntu from 16.04 to 20.04

Published on March 4th 2021 - Listed in Nginx Linux - 0 comments

How to do bulk/mass changes on DNS records in PowerDNS with MySQL backend

Published on March 2nd 2021 - Listed in DNS PowerDNS Linux Coding Shell MySQL Database - 0 comments

Using dd to replace a solid state drive, restore a partition and grow its ext4 file system

Published on February 27th 2021 - Listed in Linux - 0 comments

How to use sed to append quote characters around a DNS TXT record

Published on February 24th 2021 - Listed in DNS PowerDNS Linux Coding Shell - 0 comments

Invalid performance data from check_disk on CentOS results in empty monitoring graphs

Published on February 17th 2021 - Listed in Linux Monitoring Icinga Nagios - 0 comments

How to migrate OTRS 6.x (Community Edition) to another server

Published on February 4th 2021 - last updated on January 10th 2023 - Listed in OTRS Linux - 3 comments

How a dying SSD of a Windows virtual machine killed the physical Linux host

Published on January 25th 2021 - Listed in Hardware Windows Linux VMware Virtualization - 1 comments

Installing a newer node.js and npm version on Debian 10 (Buster) using update-alternatives

Published on January 15th 2021 - last updated on June 15th 2021 - Listed in Linux - 3 comments

Painless e-mail mailbox migration/sync using imapsync

Published on January 14th 2021 - Listed in Mail Cloud Internet Linux - 0 comments

Changing timezone in Debian and Ubuntu Linux using tzdata

Published on January 13th 2021 - Listed in Linux - 0 comments

Lets Encrypt certbot unable to issue certificate, missing command line (Please choose an account)

Published on January 6th 2021 - Listed in TLS SSL Security Linux - 1 comments

WARNING: Device /dev/xxx not initialized in udev database - shown in rescue chroot environment

Published on December 3rd 2020 - Listed in Linux - 0 comments

Terminator terminal broadcast all option broadcasts input to all other terminator windows

Published on November 25th 2020 - Listed in Shell Linux - 0 comments

Solve Seahub start problems after Seafile upgrade from 6.2 to 7.0

Published on November 18th 2020 - last updated on April 9th 2021 - Listed in Cloud Linux Seafile Nginx - 0 comments

PHP: Translations with gettext not working in Apache mod_php but works on command line (caused by mod_perl)

Published on November 17th 2020 - Listed in Apache PHP Linux Coding - 2 comments

Nginx 1.14 on Debian 10 (Buster) filling error logs with nchan_store_init_worker assertion failed

Published on November 13th 2020 - Listed in Nginx Linux - 2 comments

How to identify and replace a failing drive behind Fusion-MPT SAS-2 controller on IBM System X server

Published on October 26th 2020 - Listed in Hardware Linux - 0 comments

How to update smartmontools drivedb in Debian Stretch (without package update)

Published on October 15th 2020 - Listed in Monitoring Hardware Linux - 1 comments

Farewell to another hard drive: Western Digital Green 2 TB dead after 63791 hours

Published on October 1st 2020 - last updated on October 3rd 2020 - Listed in Hardware Linux - 0 comments

Digitalising DVDs on Linux with Handbrake and video cutting with LosslessCut

Published on September 27th 2020 - last updated on January 10th 2023 - Listed in Multimedia Kodi Hardware Linux - 0 comments

Linux Mint Desktop: CD/DVD drive tray closes immediately after opening

Published on September 22nd 2020 - Listed in Hardware Linux - 1 comments

Create an animated gif from a video source using ffmpeg, imagemagick and gifsicle

Published on September 21st 2020 - Listed in Multimedia Linux - 0 comments

Linux Mint cannot print on Samba shared printer after password change (apparmor and authentication errors)

Published on September 15th 2020 - Listed in Linux Office Samba - 2 comments

Ansible playbook run fails due to Python version problem: How to force a Python version on the client

Published on September 10th 2020 - last updated on March 20th 2023 - Listed in Ansible Linux Python Personal - 5 comments

Monitoring plugin check_netio 1.6 released: Limit tcp statistic output in performance data

Published on September 4th 2020 - Listed in Monitoring Linux Network - 0 comments

How to match case insensitive (uppercase and lower case) strings with regular expression in Bash

Published on September 4th 2020 - last updated on November 25th 2021 - Listed in Coding Bash Linux Shell - 0 comments

How to remove the first word of a line in Bash - comparing awk vs. cut vs. sed

Published on September 4th 2020 - last updated on August 4th 2021 - Listed in Coding Bash Linux Shell - 3 comments

Keepalived scripts and how to run them as non root user

Published on September 3rd 2020 - Listed in Linux Network - 0 comments

Image viewer (xviewer) on Linux Mint crashes on large pictures - set alternative (Nomacs) as preferred application

Published on September 2nd 2020 - Listed in Linux Multimedia Graphics - 0 comments

How to install MySQL 5.7 on Ubuntu 20.04 focal (and properly avoid MySQL 8.0 packages)

Published on August 31st 2020 - last updated on February 4th 2022 - Listed in MySQL Database Linux Ubuntu - 9 comments

Digital TV recording (even scheduled) made easy with Libreelec, Kodi and Tvheadend

Published on August 29th 2020 - Listed in Multimedia Linux Kodi - 2 comments

Linux distribution and release discovery in Ansible - and how to handle no ansible_distribution for Ubuntu 20.04

Published on August 28th 2020 - Listed in Ansible Linux - 0 comments

Syslog-NG in LXC container stopped working: No space left on device /dev - a.k.a. /dev tmpfs and TTYs in LXC containers

Published on August 25th 2020 - Listed in LXC Linux Containers - 1 comments

Crucial MX500 SSD drive dead after 8650 hours

Published on August 10th 2020 - Listed in Hardware Linux Monitoring - 0 comments

Upgrading Icinga2 from 2.10 to 2.12 on Debian Stretch fails due to missing backports

Published on August 7th 2020 - Listed in Icinga Monitoring Linux - 1 comments

When the replacement SSD drive is the same model - but with less capacity

Published on July 28th 2020 - last updated on July 30th 2020 - Listed in Hardware Linux - 0 comments

Leaving a party without saying bye: Western Digital Green SSD dead without pre-fail indications

Published on July 21st 2020 - Listed in Hardware Monitoring Linux - 0 comments

Speed comparison PHP 7.0 vs. 7.2 vs. 7.4 using MySQL PDO connection

Published on July 21st 2020 - Listed in PHP Linux Database - 0 comments

Monitoring expiration dates of all ssl/tls certificates in the chain (intermediate and root ca)

Published on June 10th 2020 - Listed in SSL TLS Linux Monitoring Internet Security - 0 comments

Keepalived virtual ip addresses gone lost after systemd update

Published on May 12th 2020 - Listed in Linux Systemd Network - 0 comments

Unable to create KVM virtual machine: Host does not support domain type kvm for virtualization type hvm

Published on April 25th 2020 - Listed in Linux KVM Hardware Virtualization - 0 comments

After Plesk upgrade, check_mailq returns fatal: User nagios(110) is not allowed to view the mail queue

Published on April 18th 2020 - Listed in Monitoring Linux - 0 comments

No such file or directory in /tmp although file exists and permissions are correct

Published on April 14th 2020 - Listed in Linux Monitoring Systemd - 3 comments

Unable to mount NTFS partitions on a drive which is part of an Intel isw raid (fakeraid)

Published on April 9th 2020 - Listed in Hardware Windows Linux - 0 comments

Apache 2.4 with mpm event freezing up (scoreboard is full) after reload due to bug

Published on April 6th 2020 - Listed in Apache Linux Monitoring - 0 comments

How to detect Ghostcat AJP vulnerability (CVE-2020-1938) in Apache Tomcat

Published on April 2nd 2020 - Listed in Security Tomcat Linux Apache - 0 comments

LXC container not getting configured static IP address because of netplan and disabled dhcp

Published on March 10th 2020 - Listed in LXC Linux Containers - 1 comments

Confluence page update through REST API not working anymore (error 501: Unable to save changes to unreconciled page)

Published on March 6th 2020 - Listed in Atlassian Linux - 0 comments

Lets Encrypt announced mass revoking of certain certificates on March 4 2020 - here is a quick check if you are affected

Published on March 4th 2020 - Listed in Internet Linux TLS SSL - 0 comments

Installing (compiling) jshon with libjansson on an old Linux (SLES 10)

Published on February 28th 2020 - Listed in Shell Linux - 0 comments

check_netio 1.5 is available: Added interface drops and optional tcp stats to performance data

Published on February 12th 2020 - Listed in Linux Monitoring - 0 comments

Version 0.3 of check_rpi_temp monitoring plugin changes the way temperature is read

Published on February 7th 2020 - Listed in Hardware Linux Monitoring - 0 comments

VMware: Cannot extend virtual hard drive in vSphere UI, greyed out size - how to solve it and increase physical volume in Linux VM

Published on February 7th 2020 - Listed in VMWare Virtualization Linux - 0 comments

How to install Linux Mint 19.3 from USB stick and solve boot from USB issues

Published on January 24th 2020 - Listed in Linux Hardware - 0 comments

Unable to boot Knoppix 8.6 from USB stick on a Dell Latitude? Check boot option in BIOS!

Published on January 23rd 2020 - Listed in Linux Hardware - 0 comments

Letsencrypt certificate not renewed on Apache web server due to https redirect

Published on January 21st 2020 - Listed in Apache SSL TLS Linux - 0 comments

Raspberry Pi 3b+, Gigabit PoE switch and PoE splitter: An impossible setup? Nope!

Published on December 13th 2019 - Listed in Hardware Linux Network - 0 comments

HAProxy: How to use different HTTP Host header based on each backend server address

Published on December 11th 2019 - Listed in HAProxy Linux Elasticsearch ELK Cloud - 1 comments

HAProxy in Ubuntu 18.04 Docker image not starting: cannot bind UNIX socket

Published on December 4th 2019 - last updated on September 1st 2022 - Listed in Docker HAProxy Linux Kubernetes Containers - 7 comments

Convert movies/clips to VTech Kidizoom Touch 5.0 video format using ffmpeg

Published on December 2nd 2019 - Listed in Multimedia Linux Personal - 3 comments

First steps with Github workflows (actions) for simple code/syntax validation

Published on November 25th 2019 - Listed in Linux Coding - 0 comments

Transfer your X11 (graphic) session to another user with xauth

Published on November 20th 2019 - Listed in Linux - 0 comments

Update Debian Jessie to Stretch and Zoneminder from 1.29 via 1.30 to 1.32 and how to fix update issues

Published on November 12th 2019 - Listed in Zoneminder Surveillance Linux - 0 comments

How to use the Docker host IP address within an application container (and allow communication across clusters)

Published on September 25th 2019 - last updated on September 26th 2019 - Listed in Docker Rancher Containers Linux - 0 comments

Cannot print or open System Settings Printers anymore in Linux Mint

Published on September 4th 2019 - Listed in Linux Hardware Office - 0 comments

First steps with Consul and how to interpret communication errors between nodes

Published on August 27th 2019 - Listed in Consul Linux - 0 comments

Install LXC from upstream source on Ubuntu 18.04 Bionic

Published on August 24th 2019 - Listed in LXC Linux - 0 comments

Version 6.2 of monitoring plugin check_smart allows quicker identification of drives with problems

Published on August 19th 2019 - Listed in Hardware Monitoring Linux BSD - 0 comments

Mass renaming in Bash based on regular expression

Published on August 19th 2019 - Listed in Bash Linux Shell - 0 comments

Docker container filesystem running out of space - how to find out which container to blame and handle large container json logs

Published on August 15th 2019 - Listed in Linux Rancher Containers Docker - 1 comments

Cannot start AWS EC2 instance after changing instance type: Ensure that your instance is enabled for ENA

Published on August 13th 2019 - Listed in AWS Linux - 2 comments

I am an egg boiler, too, said the hard drive and caused application issues

Published on August 8th 2019 - Listed in Hardware Linux - 0 comments

Troubleshooting (and solving) high load spikes and timeouts on Varnish using backend with ESI

Published on August 2nd 2019 - last updated on August 7th 2019 - Listed in Varnish Linux - 0 comments

Windows 10 and Server 2016 clients block access to (Samba) shares with public guest account: Technical analysis and workaround for event 31017

Published on July 22nd 2019 - Listed in Windows Linux Security Samba - 4 comments

How to protect your mailbox from spammers using only digit domains with SpamAssassin

Published on July 12th 2019 - Listed in Mail Linux - 0 comments

Local users becoming root using su without password authentication due to wrong PAM config

Published on July 4th 2019 - Listed in Linux Security - 1 comments

New version 1.4 of check_netio allows to check for interface errors

Published on June 21st 2019 - Listed in Monitoring Linux Icinga Nagios - 0 comments

Replace hard or solid state drive with a bigger one and grow software (mdadm) raid

Published on June 7th 2019 - last updated on April 25th 2022 - Listed in Linux Hardware - 6 comments

Terminator terminal suddenly inserting each character twice when broadcasting to multiple windows

Published on June 3rd 2019 - Listed in Linux Internet Shell - 22 comments

After Ubuntu update from Trusty to Xenial, disk filled up by rsyslog log due to wrong logrotate config

Published on May 31st 2019 - Listed in Linux - 0 comments

Setting up a LXC host on Ubuntu 18.04 in a VMware ESXi virtual machine environment

Published on May 22nd 2019 - Listed in LXC VMware Linux Virtualization Containers - 0 comments

Login using Active Directory in Atlassian Jira fails with LDAP: error code 1

Published on May 16th 2019 - Listed in Linux Atlassian - 0 comments

Fix a broken python3.5 package upon Ubuntu upgrade to Bionic

Published on May 15th 2019 - last updated on March 31st 2022 - Listed in Linux Ubuntu - 0 comments

Debian Wheezy LXC container not running on Stretch host with Kernel 4.18 bpo anymore (a vsyscall story)

Published on May 13th 2019 - last updated on July 2nd 2021 - Listed in Linux LXC Security Containers - 0 comments

Hard drive to SSD upgrade on a HP 250 G5 notebook

Published on May 11th 2019 - last updated on May 11th 2019 - Listed in Hardware Windows Linux - 1 comments

Nginx socket() failed (24: Too many open files)

Published on May 9th 2019 - last updated on February 1st 2021 - Listed in Nginx Linux - 8 comments

Create an animated gif image from still images on the cli using imagemagick

Published on May 2nd 2019 - last updated on October 31st 2019 - Listed in Linux Multimedia Surveillance - 0 comments

Elasticsearch: Shards fail to allocate due to maximum number of retries exceeded

Published on April 5th 2019 - Listed in ELK Elasticsearch Linux - 1 comments

PowerDNS Master Slave DNS Replication with MySQL backend

Published on April 1st 2019 - Listed in DNS PowerDNS Linux - 11 comments

PowerDNS Authoritative DNS Server 4.1 with MySQL backend on Ubuntu 18.04

Published on March 26th 2019 - last updated on April 1st 2019 - Listed in DNS Linux Ubuntu PowerDNS - 2 comments

New authoritative DNS server setup with user interface in 2019 (a comparison)

Published on March 15th 2019 - Listed in DNS Linux Ubuntu PowerDNS - 2 comments

Investigating HTTP server response (json) is cut/incomplete before the end

Published on March 8th 2019 - Listed in Nginx Linux Internet - 1 comments

Updating Ubuntu with cross versions on LXC hosts and containers: Watch the gotchas!

Published on February 28th 2019 - last updated on April 29th 2019 - Listed in Linux Ubuntu LXC Containers - 0 comments

LXC 2.0 container not starting on Debian 9 Stretch when using cgroup limits

Published on February 18th 2019 - Listed in LXC Linux - 0 comments

How to solve Rancher 1.x service stuck in removing (in progress)

Published on February 13th 2019 - last updated on March 13th 2019 - Listed in Rancher Docker Linux Database MySQL - 1 comments

Getting the EDIMAX EW-7811UN to work with Linux Mint 18.1

Published on February 11th 2019 - last updated on December 4th 2019 - Listed in Linux Network Wireless Hardware - 0 comments

It is 2019, time to upgrade your Ubuntu 14.04 Trusty machines!

Published on January 30th 2019 - Listed in Linux - 0 comments

Elasticsearch ignored disk watermark settings and enforced read only index

Published on January 28th 2019 - Listed in ELK Elasticsearch Linux - 0 comments

HAProxy backend server behind AWS LB remains down with HTTP 503

Published on January 25th 2019 - Listed in HAProxy Linux Internet AWS Cloud - 0 comments

How to play an audio file on the command line or as a cron job in Linux

Published on January 22nd 2019 - Listed in Linux Multimedia - 2 comments

Application (Docker/Kubernetes) containers and STDOUT logging

Published on January 15th 2019 - Listed in Docker Containers Linux ELK - 1 comments

Outages in the Cloud. Whom to blame and how to prove it?

Published on January 11th 2019 - last updated on March 13th 2019 - Listed in Internet Linux Network Monitoring Influx Grafana - 4 comments

Monitoring plugin check_smart 5.11.1 released

Published on January 8th 2019 - Listed in Monitoring Hardware Linux BSD Icinga Nagios - 0 comments

Linux going AMD Ryzen with Debian 9 (Stretch)

Published on December 31st 2018 - last updated on July 21st 2020 - Listed in Hardware Linux - 1 comments

Monitoring plugin check_smart 5.11 available, introducing exclude list

Published on December 28th 2018 - Listed in Monitoring Hardware Linux BSD Icinga Nagios - 0 comments

Monitoring plugin check_netio 1.3 released

Published on December 21st 2018 - Listed in Monitoring Linux Network - 0 comments

Regex != regex in sed (or: replacing digits in sed)

Published on December 14th 2018 - Listed in Shell Linux Coding - 0 comments

How to manually clean up Zoneminder events (and respect archived events)

Published on December 14th 2018 - last updated on October 17th 2020 - Listed in Zoneminder Surveillance Linux Security - 4 comments

Monitoring plugin check_lxc 0.6.3 released

Published on December 5th 2018 - Listed in Monitoring Linux Icinga LXC Containers - 0 comments

Mounting NFS export suddenly does not work anymore - blame systemd

Published on November 15th 2018 - Listed in Linux Systemd NFS - 0 comments

Different proxy_pass upstream depending on client ip address in Nginx

Published on October 26th 2018 - Listed in Nginx Internet Linux - 1 comments

Permission denied when writing on NTFS mount, even as root

Published on October 18th 2018 - Listed in Linux Windows - 1 comments

Grub2 install fails on USB drive with error: appears to contain a ufs1 filesystem

Published on September 28th 2018 - Listed in Linux - 0 comments

How to compare speed of USB flash pen drives (USB sticks)

Published on September 26th 2018 - last updated on December 1st 2019 - Listed in Hardware Linux - 0 comments

How to use kubectl on a Rancher 2 managed Kubernetes cluster

Published on September 21st 2018 - Listed in Docker Containers Linux Rancher - 0 comments

Adapt Roundcube managesieve plugin to dynamically lookup sieve host

Published on September 7th 2018 - Listed in PHP Mail Linux Roundcube - 0 comments

Install a newer Valgrind version on Ubuntu 14.04 using alternatives

Published on September 3rd 2018 - Listed in Linux - 1 comments

Install/Upgrade cmake 3.12.1 on Ubuntu 14.04 using alternatives

Published on September 3rd 2018 - last updated on June 6th 2019 - Listed in Linux - 2 comments

Another way to append a text in sed using ampersand

Published on August 15th 2018 - Listed in Linux Shell Bash Coding - 3 comments

Ignore systemd log warning Failed to reset devices.list: Operation not permitted in OSSEC

Published on July 31st 2018 - Listed in Linux LXC OSSEC Security Systemd - 0 comments

LXC container in network reachable, but cannot ping between host and container

Published on July 27th 2018 - Listed in LXC Linux Network - 0 comments

Retrieving a value from XML document in Linux Bash

Published on July 24th 2018 - last updated on November 12th 2020 - Listed in Monitoring Linux Icinga Shell Coding - 0 comments

Installing check_vmware_esx.pl and VMware Perl SDK 6.7 on Ubuntu 16.04 Xenial

Published on July 20th 2018 - Listed in VMware Monitoring Icinga Linux Perl - 2 comments

Freeing up disk space from CouchDB - do not forget the views!

Published on July 19th 2018 - Listed in CouchDB Database DB Linux - 3 comments

Monitoring memory usage of a LXC container (comparing 1.x vs 2.x)

Published on July 18th 2018 - Listed in Monitoring Linux LXC Virtualization - 0 comments

Ansible: Detect and differ between LXC containers and hosts

Published on June 13th 2018 - Listed in Linux Ansible LXC - 1 comments

Ubuntu 18.04: /etc/rc.local does not exist anymore - does it still work?

Published on June 11th 2018 - Listed in Linux - 8 comments

Filesystem full because of Filebeat still hanging on to rotated log

Published on June 11th 2018 - Listed in Linux - 0 comments

Network config in Ubuntu 18.04 Bionic is now elsewhere and handled by netplan

Published on June 8th 2018 - Listed in Linux - 0 comments

Rancher 1.6: Github user not able to login (Internal Server Error)

Published on May 31st 2018 - Listed in Docker Rancher Linux DB Database MySQL - 0 comments

Install Linux Mint 18.3 on software raid (mdraid) device

Published on May 26th 2018 - last updated on January 6th 2023 - Listed in Hardware Linux - 4 comments

Hardware Error: Parity error during data load. Or: Clean me!!!

Published on May 24th 2018 - Listed in Hardware Linux - 1 comments

Lessons learned: Do not put stateful Minio into a Docker container

Published on May 7th 2018 - Listed in Linux Containers LXC Docker Minio - 0 comments

Rsnapshot error: /bin/rm: cannot remove ... Directory not empty

Published on May 4th 2018 - Listed in Linux - 0 comments

Unable to download attachment from Gmail, how to get it anyway (by using Takeout)

Published on April 9th 2018 - Listed in Internet Linux Mail - 0 comments

Monitor dual storage (raid) controller on IBM x3650 M4

Published on April 6th 2018 - Listed in Hardware Linux Monitoring - 0 comments

Automatic SLA reporting from Icinga and push into Confluence page

Published on April 4th 2018 - last updated on March 6th 2020 - Listed in Icinga Monitoring Nagios Linux Atlassian - 2 comments

Bash: date -d 1 month ago still shows the same month

Published on March 29th 2018 - Listed in Linux Shell Bash Coding - 0 comments

Bash: Why is a multi-line output saved as one line in a variable?

Published on March 26th 2018 - Listed in Linux Shell Bash Coding - 6 comments

Mouse click not working after update of virtual Linux Mint 17.3

Published on March 19th 2018 - Listed in Linux - 0 comments

apt upgrade exits with error: package pkgname contains empty filename

Published on January 10th 2018 - Listed in Linux - 0 comments

Install newer ninja-build (1.8.2) on Ubuntu 14.04 Trusty

Published on December 22nd 2017 - Listed in Linux - 4 comments

Install/Upgrade cmake 3.10.1 in Ubuntu 14.04 using alternatives

Published on December 22nd 2017 - Listed in Linux - 2 comments

ElasticSearch cluster stays red, stuck unassigned shards not being assigned

Published on December 19th 2017 - last updated on October 15th 2021 - Listed in ELK Linux Elasticsearch - 0 comments

ElasticSearch stopped to assign shards due to low disk space

Published on December 12th 2017 - Listed in Linux ELK - 2 comments

icinga2-classicui shows Whoops error on new Icinga 2.8 install

Published on December 8th 2017 - Listed in Icinga Monitoring Linux - 0 comments

Monitoring multiple Varnish instances

Published on November 14th 2017 - Listed in Varnish Linux Monitoring Icinga Nagios - 0 comments

Confused ElasticSearch refuses to insert data due to mapping conflict

Published on October 31st 2017 - Listed in Linux ELK Kibana Logstash Filebeat - 2 comments

Nginx: Serve error pages from reverse proxy, not from upstream server

Published on September 21st 2017 - Listed in Internet Linux Nginx - 0 comments

Varnish panic / crash due to low workspace sizing

Published on September 18th 2017 - Listed in Varnish Linux - 0 comments

Linux Mint Dual Monitor Setup: Screens dark after login in Cinnamon

Published on September 15th 2017 - Listed in Linux - 0 comments

Increase JVM Heap Size Memory for ElasticSearch

Published on September 14th 2017 - Listed in ELK Linux - 0 comments

Analysing and troubleshooting Varnish traffic with varnishtop and varnishlog

Published on September 13th 2017 - last updated on March 5th 2020 - Listed in Varnish Linux - 0 comments

Solving _grokparsefailure on syslog entries in ELK stack

Published on September 12th 2017 - Listed in ELK Linux - 0 comments

Elastic X-Pack error after updating Logstash

Published on September 11th 2017 - Listed in ELK Linux - 0 comments

Handling different timezones of HAProxy logs in ELK stack

Published on August 28th 2017 - last updated on March 19th 2020 - Listed in Docker Rancher Linux ELK HAProxy Containers - 1 comments

Docker container syslog logs not appearing in ELK Kibana (different timezone)

Published on August 25th 2017 - Listed in Docker Linux ELK - 0 comments

LXC Container not starting - no init runlevel in container

Published on August 23rd 2017 - Listed in Linux LXC - 0 comments

How to setup collaborative (parallel) editing in Atlassian Confluence

Published on August 18th 2017 - last updated on February 6th 2020 - Listed in Linux Internet Atlassian - 0 comments

Install and configure Elastic Filebeat through Ansible

Published on August 11th 2017 - Listed in Linux ELK Kibana Logstash Filebeat Ansible - 2 comments

HTTP POST benchmarking / stress-testing an API behind HAProxy with siege

Published on August 3rd 2017 - Listed in Internet Linux HAProxy - 1 comments

Presenting new monitoring plugin: check_lxc

Published on July 19th 2017 - Listed in Linux Monitoring Nagios Icinga LXC - 1 comments

Varnish vcl reload not working with SystemD on Ubuntu 16.04

Published on July 18th 2017 - Listed in Linux Varnish Systemd - 0 comments

Count backwards with seq in Linux

Published on July 12th 2017 - Listed in Linux - 0 comments

Permissions of log files automatically being reset by syslog

Published on June 27th 2017 - Listed in Linux Mail - 2 comments

Magento2 Load Balancer Health Check for AWS ELB

Published on June 26th 2017 - Listed in AWS Internet PHP MySQL DB Linux - 0 comments

apt-get update error: Could not get lock (SystemD and unattended APT)

Published on June 23rd 2017 - last updated on April 24th 2021 - Listed in Linux Systemd - 0 comments

Debian 9 Stretch and Nagios NRPE (command args and SSL compatibility)

Published on June 22nd 2017 - last updated on November 19th 2020 - Listed in Linux Monitoring Nagios Icinga - 5 comments

Cannot boot Linux Mint 18.1 after running apt-get upgrade

Published on June 19th 2017 - Listed in Linux - 0 comments

AWS EC2 instance unreachable after reboot ([Errno 101])

Published on June 16th 2017 - Listed in Linux Internet AWS - 4 comments

Rename jpeg files to contain the date the picture was taken

Published on May 6th 2017 - last updated on August 4th 2019 - Listed in Windows Linux Multimedia Mac - 0 comments

Ubuntu 16.04 reboot and shutdown hanging on LVM metadata daemon

Published on May 5th 2017 - Listed in Linux - 0 comments

Empty page returned from Nginx with fastcgi caching (HEAD vs GET)

Published on April 21st 2017 - Listed in Linux Nginx - 2 comments

Nginx compile fails with fatal error: ld terminated with signal 9

Published on April 21st 2017 - Listed in Linux Nginx - 0 comments

Unable to delete application link in JIRA (NullPointerException: consumer)

Published on April 3rd 2017 - Listed in Linux Database Windows Atlassian - 0 comments

Tackling Confluence migration issues (Windows+MSSQL to Linux+MariaDB)

Published on March 24th 2017 - Listed in Linux Database MySQL Windows Atlassian - 0 comments

Unbound DNS not serving reverse lookup for internal addresses

Published on March 20th 2017 - Listed in Linux DNS - 1 comments

resolvconf is not always helpful, especially in a chroot rescue system

Published on February 22nd 2017 - Listed in Linux - 0 comments

MySQL InnoDB: Operating system error number 13 in a file operation

Published on February 21st 2017 - Listed in Linux Database MySQL - 0 comments

UEFI boot does not like software raid at all (GRUB Error 17)

Published on February 20th 2017 - Listed in Linux Hardware - 0 comments

Unbound DNS server behind a VIP - solving reply from unexpected source

Published on February 17th 2017 - Listed in Linux - 5 comments

Get Unbound DNS lookups working in Ubuntu 16.04 Xenial, understand SERVFAIL

Published on February 16th 2017 - Listed in Linux DNS - 3 comments

The curious case of curl, SSL SNI and the HTTP Host header

Published on February 13th 2017 - last updated on May 29th 2019 - Listed in Internet Linux SSL TLS - 0 comments

Using check_netio monitoring plugin on CentOS 7 or RHEL 7

Published on January 27th 2017 - Listed in Linux Monitoring Nagios Icinga - 2 comments

Custom partitioning on new Red Hat Enterprise Linux 7 setup

Published on January 26th 2017 - Listed in Linux - 0 comments

Custom HTTP headers not showing up on 404 response status

Published on January 23rd 2017 - last updated on April 22nd 2022 - Listed in Linux Nginx - 0 comments

Rancher: Error response from daemon /usr/bin/dockerd (deleted)

Published on January 23rd 2017 - Listed in Linux Rancher Containers Docker - 3 comments

grub-install: warning: Couldnt find physical volume

Published on January 23rd 2017 - Listed in Linux - 1 comments

Encrypted http connections (https) use four times more CPU resources

Published on January 19th 2017 - Listed in Internet Linux TLS SSL - 0 comments

Rename video files to filename with recorded date using mediainfo

Published on January 16th 2017 - last updated on January 11th 2023 - Listed in Personal Linux Multimedia - 6 comments

The Docker Dilemma: Benefits and risks going into production with Docker

Published on December 16th 2016 - Listed in Docker Virtualization Linux - 2 comments

Allow SSH access based on GeoIP country

Published on November 3rd 2016 - last updated on November 13th 2019 - Listed in Linux Security - 2 comments

Tracing a DirtyCow exploit hack several years back to 2007

Published on October 28th 2016 - Listed in Hacks Linux Internet - 0 comments

Reset (clean up) a Rancher Docker Host / Kubernetes Node

Published on October 28th 2016 - last updated on November 19th 2021 - Listed in Linux Virtualization Containers Rancher Cloud Kubernetes - 0 comments

Play a multimedia file in VLC as cron job

Published on October 24th 2016 - Listed in Linux - 1 comments

How to fix a broken or half installed Debian deb package

Published on October 14th 2016 - Listed in Linux - 0 comments

Configure Varnish custom settings on Debian 8 Jessie and Ubuntu 16.04 LTS

Published on October 13th 2016 - Listed in Linux Varnish - 0 comments

Ubuntu 16.04 xenial does not rotate nginx and rsyslog logfiles

Published on October 10th 2016 - Listed in Linux Nginx - 1 comments

Unable to load public key when encrypting data with openssl

Published on October 10th 2016 - Listed in Linux - 1 comments

monit unexpectedly restarted web application server due to http status

Published on October 6th 2016 - Listed in Linux Monitoring - 0 comments

Force Postfix to allow empty HELO/EHLO commands

Published on September 22nd 2016 - Listed in Mail Linux - 0 comments

Ubuntu Xenial root partition filling up constantly due to kernel updates

Published on September 20th 2016 - Listed in Linux - 1 comments

Headscratcher: Server should be SSL-aware but has no certificate configured

Published on September 14th 2016 - Listed in Linux - 0 comments

Remove old and install new version of Dell OMSA on CentOS

Published on September 6th 2016 - Listed in Hardware Linux - 1 comments

Slow down central mail relay server but with domain exceptions

Published on August 30th 2016 - Listed in Mail Linux Internet - 0 comments

rsyslog not logging into /var/log/mail.log? Check permissions!

Published on August 22nd 2016 - Listed in Linux Mail - 1 comments

Testing multicast is working with omping

Published on August 10th 2016 - Listed in Linux Network - 0 comments

When the OS says you are old

Published on August 2nd 2016 - Listed in Linux Personal - 1 comments

Reviewing 6 months with Linux Mint 17.3 as desktop OS

Published on July 11th 2016 - Listed in Linux Personal - 0 comments

SD card of Raspberry Pi dead - after almost (or only?) a year runtime

Published on July 6th 2016 - Listed in Hardware Linux - 0 comments

How to extend virtual drive VMDK and physical volume (PV) in a LVM setup on a VMware VM

Published on June 28th 2016 - last updated on August 12th 2022 - Listed in Linux VMware - 0 comments

Very slow VMware Perl SDK with newer Perl libwww-perl version (solved)

Published on June 21st 2016 - last updated on May 9th 2019 - Listed in VMware Linux Nagios Icinga Monitoring - 8 comments

Create a fake mail server to test mail functions in applications

Published on June 7th 2016 - Listed in Linux Mail - 0 comments

Raspberry Pi sd card issue after power outage (constant red led)

Published on June 7th 2016 - Listed in Hardware Linux - 0 comments

Limit http request methods in Nginx (authentication except for GET)

Published on May 31st 2016 - Listed in Nginx Linux - 0 comments

SpamAssassin stopped working? Check loopback interface!

Published on May 26th 2016 - Listed in Mail Linux - 0 comments

How to retrieve values from json output in Bash

Published on April 29th 2016 - last updated on October 15th 2021 - Listed in Linux Coding Shell - 0 comments

Did you know Skype understands sed? Replace previous line with sed command!

Published on April 27th 2016 - Listed in Internet Linux - 0 comments

Avoid Ansible writing several times the same line in /etc/sudoers

Published on April 25th 2016 - Listed in Linux Ansible - 0 comments

Disable autostart of lxcbr0 on Ubuntu 16.04 xenial

Published on April 22nd 2016 - Listed in Linux LXC - 1 comments

check_disk on Ubuntu 16.04 xenial reports DISK CRITICAL: / not found

Published on April 22nd 2016 - Listed in Nagios Icinga Monitoring Linux - 0 comments

Does an Ubuntu 16.04 (xenial) container run on a 14.04 (trusty) host?

Published on April 18th 2016 - Listed in LXC Linux - 2 comments

How to create global FTP message/banner/greeting with Pure-FTPd on Ubuntu Linux

Published on April 15th 2016 - last updated on February 10th 2023 - Listed in Linux - 0 comments

LXC 1.1.x is available on Debian Jessie now and update on lxc-start problem

Published on March 30th 2016 - Listed in LXC Linux - 0 comments

Debian Jessie: LXC Start not working (failed to determine fs type)

Published on March 29th 2016 - Listed in LXC Linux - 0 comments

Cannot install syslog-ng on Ubuntu 14.04 due to unmet dependencies

Published on March 23rd 2016 - Listed in Linux - 3 comments

rsnapshot on Debian Jessie not working when using ssh_args

Published on March 18th 2016 - Listed in Linux - 0 comments

systemd-journald stopped logging on CentOS 7 (Failed to write entry)

Published on March 17th 2016 - Listed in Linux Systemd - 0 comments

NRPE in Debian Jessie: Command arguments not working

Published on March 16th 2016 - Listed in Nagios Icinga Monitoring Linux - 9 comments

Create a LXC container in Debian Jessie without systemd

Published on March 14th 2016 - Listed in LXC Linux Systemd - 0 comments

Accessing WMI through a firewall - which ports are required?

Published on March 2nd 2016 - Listed in Nagios Icinga Monitoring Windows Linux - 0 comments

Supervision of an application (daemon process) with monit

Published on February 26th 2016 - Listed in Linux - 0 comments

Force a new partition to start at a certain sector with parted

Published on February 24th 2016 - Listed in Linux - 1 comments

Use apt behind proxy - but do not use proxy for some repositories (DIRECT)

Published on February 19th 2016 - Listed in Linux - 0 comments

Move an iptables firewall rule up the chain before a reject rule

Published on February 4th 2016 - last updated on May 7th 2021 - Listed in Linux Security Network - 0 comments

The fight to find rpms for old Red Hat Linux servers

Published on February 2nd 2016 - Listed in Linux - 0 comments

check_disk_smb: Access Denied when monitoring share on old Samba server

Published on January 29th 2016 - last updated on March 17th 2022 - Listed in Nagios Icinga Monitoring Linux Samba - 0 comments

Backup partition (ext4) running out of space? tune2fs to the rescue!

Published on January 14th 2016 - Listed in Linux - 0 comments

Connect with Pidgin to Lync 2013 in Linux Mint 17.3 (Ubuntu 14.04)

Published on January 13th 2016 - Listed in Linux Windows - 2 comments

Installing and use cmake 3.4.1 in Ubuntu 14.04 using alternatives

Published on January 7th 2016 - Listed in Linux - 5 comments

check_disk on openSUSE 13.2: Permission denied on Samba mount

Published on December 10th 2015 - last updated on April 24th 2021 - Listed in Monitoring Nagios Icinga Linux Samba - 0 comments

Clone a private git repository with Ansible (using password prompt)

Published on December 2nd 2015 - Listed in Linux Ansible - 5 comments

Fix Raspberry Pi 2 boot issue after rpi-update

Published on December 1st 2015 - Listed in Linux - 0 comments

configure fails with config.status error cannot find input file Makefile.in

Published on November 27th 2015 - Listed in Linux - 0 comments

Ubuntu Desktop: Error resolving, name or service not known (but DNS works!)

Published on November 24th 2015 - Listed in Linux DNS - 0 comments

Upgrading from openSUSE 12.3 to openSUSE Tumbleweed (FAIL)

Published on November 5th 2015 - Listed in Linux - 0 comments

sudo asks for password, although NOPASSWD is set in /etc/sudoers

Published on October 30th 2015 - Listed in Linux - 0 comments

HAProxy fails to dynamically lookup DNS of backend servers

Published on October 27th 2015 - Listed in HAProxy Linux - 0 comments

awk: print last few elements of a line

Published on October 16th 2015 - Listed in Linux Coding Shell - 0 comments

Do not try to auto-mount containers logical volume during lxc-create

Published on October 13th 2015 - Listed in Linux LXC - 0 comments

Wordpress web abused using fx() web shell and Priv8 mailer to send spams

Published on October 9th 2015 - Listed in Hacks Internet Linux - 0 comments

Cannot update bind9 in Debian? Check for errors in zone config!

Published on October 8th 2015 - Listed in Linux DNS - 0 comments

Nginx: Configure bypassing and or purging the cache

Published on September 30th 2015 - Listed in Linux Nginx - 1 comments

lxc-destroy command not working when run as cron job

Published on September 25th 2015 - Listed in Linux - 0 comments

Enable caching in Nginx Reverse Proxy (and solve cache MISS only)

Published on September 17th 2015 - Listed in Linux Nginx - 8 comments

HAProxy 1.5 init script broken in Ubuntu 14.04.3 LTS

Published on September 10th 2015 - Listed in Linux - 0 comments

SLES 11: Where is my beloved htop?

Published on August 6th 2015 - Listed in Linux - 2 comments

Read or count number of lines of an Excel xlsx file in Linux on the cli

Published on July 29th 2015 - Listed in Linux Perl Shell Windows Coding Office - 2 comments

fatal: Access denied for user by PAM account configuration

Published on July 29th 2015 - Listed in Linux Security - 3 comments

pptp client on Linux: Disable crazy anon logging (callmgr)

Published on July 21st 2015 - Listed in Linux Network Internet - 0 comments

Mount a volume with different ownership permissions with bindfs

Published on July 16th 2015 - Listed in Linux - 0 comments

Winbind unable to retrieve user list from Windows Active Directory

Published on July 9th 2015 - last updated on April 8th 2021 - Listed in Linux Windows Samba - 2 comments

New version of check_esxi_hardware fixes issue with patched pywbem

Published on June 26th 2015 - Listed in Nagios Monitoring Linux VMware - 8 comments

HTTP content encoding and caching analysis with tcpdump and wireshark

Published on June 26th 2015 - Listed in Linux Network - 0 comments

Use FTPES with pure-ftpd and solve connection timeout issues

Published on June 12th 2015 - Listed in Linux Internet - 0 comments

HAProxy: Make httpchk on different port than application

Published on June 11th 2015 - Listed in PHP Linux HAProxy MySQL - 1 comments

Nginx talking to remote php-fpm backend server: No input file specified.

Published on June 10th 2015 - Listed in PHP Linux Nginx - 2 comments

Ubuntu 14.04: mailq command not working in container (Permission denied)

Published on June 8th 2015 - Listed in Linux - 4 comments

Network connectivity problems when running LXC (with veth) in VMware VM

Published on May 26th 2015 - last updated on March 22nd 2023 - Listed in VMware Linux Virtualization Network LXC - 6 comments

HAProxy: Forward based on string in url combined with existing acl

Published on May 22nd 2015 - Listed in Linux HAProxy - 3 comments

Finally a good example of a long lasting SATA drive

Published on May 20th 2015 - Listed in Hardware Linux - 0 comments

Problems on LXC in same network as its host which is a VMware VM

Published on May 11th 2015 - Listed in Linux Network VMware Virtualization - 1 comments

xfs anger: repair not working (inodes not freed) and slow ls

Published on May 6th 2015 - Listed in Linux - 2 comments

Get rid of Ksshaskpass window popping up in openSUSE

Published on April 30th 2015 - Listed in Linux - 2 comments

Upgrade a HDD running Windows 7, fix boot issues and resize NTFS

Published on April 29th 2015 - Listed in Hardware Windows Linux - 0 comments

Pure-FTPd: Add full name (syntax) when creating a new virtual user

Published on April 16th 2015 - Listed in Linux - 0 comments

Ubuntu boot bug (error: diskfilter writes are not supported)

Published on April 10th 2015 - Listed in Linux - 0 comments

Installing and testing the new pywbem 0.8 (development version)

Published on April 8th 2015 - Listed in Linux Nagios Monitoring VMware - 2 comments

7 year old bug in rsnapshot fixed (LVM snapshot missing mount point)

Published on April 7th 2015 - Listed in Linux Unix Backup - 0 comments

Strange hex characters appear in html source code (check_http and chunks)

Published on March 10th 2015 - Listed in Linux Monitoring Nagios - 1 comments

When a Windows support phone scammer reaches a Linux Systems Engineer...

Published on March 3rd 2015 - Listed in Windows Linux Internet Hacks - 0 comments

No space left on device but df still shows available space

Published on February 24th 2015 - Listed in Linux - 1 comments

Overwrite variables in template file with chef template command

Published on January 21st 2015 - Listed in Linux Chef Unix - 0 comments

Disable AHBL (Abuse Hosts) DNS blocklist in Spamassassin

Published on January 20th 2015 - Listed in Internet Mail Linux - 3 comments

Cannot register RHEL 7 server (certificate verify failed) due to wrong time

Published on January 13th 2015 - Listed in Linux - 9 comments

Install LXC from source on Ubuntu 14.04 Trusty

Published on November 26th 2014 - last updated on August 23rd 2019 - Listed in Linux LXC - 2 comments

Permission denied error on /root/.bash_profile when running su command

Published on November 25th 2014 - Listed in Linux Shell - 1 comments

How to use openSUSE zypper behind a HTTP proxy (with authentication)

Published on November 10th 2014 - last updated on January 17th 2022 - Listed in Linux Network Internet - 5 comments

Using preseed to create two volume groups on same disk

Published on October 22nd 2014 - Listed in Linux - 2 comments

Network Intrusion Detection System with Suricata on Debian Wheezy

Published on October 8th 2014 - Listed in Security Linux Network - 2 comments

awk issue when trying to sort variables with same values

Published on September 29th 2014 - Listed in Linux Shell Coding - 0 comments

Are there any shellshock attacks (in Apache access logs)?

Published on September 26th 2014 - Listed in Hacks Linux Shell Apache - 1 comments

node js: Fix bodyParser error (is no longer bundled with Express)

Published on September 16th 2014 - last updated on April 29th 2022 - Listed in Linux Unix Rant - 1 comments

Rsnapshot does not remove LV snapshot when mount failed

Published on September 11th 2014 - Listed in Linux Backup - 0 comments

Bind9 Master Slave replication: Zone transfer not working in Ubuntu 14.04

Published on September 8th 2014 - Listed in Linux - 1 comments

Ubuntu 14.04: Slow network boot prevents glusterfs volumes to mount

Published on September 3rd 2014 - Listed in Linux - 1 comments

Mount a GlusterFS volume in a LXC container

Published on September 1st 2014 - Listed in Linux LXC GlusterFS - 5 comments

Use bash to compare remote cpu load and print lowest value of array

Published on August 14th 2014 - Listed in Linux Shell Coding - 0 comments

GlusterFS bricks should be in a subfolder of a mountpoint

Published on August 5th 2014 - Listed in Linux - 1 comments

Cannot connect to SSH: Read from socket failed: Connection reset by peer

Published on July 23rd 2014 - Listed in Linux - 0 comments

Automate Postfix installation in Debian and Ubuntu with debconf

Published on July 21st 2014 - Listed in Mail Linux LXC - 0 comments

LXC start fails with get_cgroup failed to receive response error

Published on July 14th 2014 - Listed in Linux - 0 comments

Use of uninitialized value XXX in concatenation (.) or string (perl snmp)

Published on June 26th 2014 - Listed in Perl Linux - 0 comments

Online resizing of an LXC container on LVM volume

Published on June 24th 2014 - Listed in Linux - 0 comments

Using awstats in combination with logrotate

Published on June 23rd 2014 - Listed in Linux Internet - 0 comments

Nginx in front of Apache: Only default server website is shown

Published on June 18th 2014 - Listed in Linux Internet Nginx Apache - 0 comments

Nginx emerg error: could not build the server_names_hash

Published on June 5th 2014 - Listed in Linux Internet Unix Nginx - 0 comments

Prevent nginx from serving content to external domains (hotlinking)

Published on June 4th 2014 - Listed in Linux Unix Internet Nginx - 0 comments

Reverting/Restoring to a LVM snapshot as a rollback scenario

Published on June 3rd 2014 - Listed in Linux - 0 comments

X11 Forwarding through SSH not working (missing xauth)

Published on May 28th 2014 - Listed in Linux Java - 0 comments

Some disk write performance statistics on a Raid-50

Published on May 26th 2014 - Listed in Linux Hardware - 0 comments

Network interfaces are named em instead of eth on Ubuntu 14.04 LTS

Published on May 23rd 2014 - Listed in Linux Network - 0 comments

Finding a spammer (or spam script) sometimes takes time and patience

Published on May 13th 2014 - Listed in Linux Hacks Internet Mail - 0 comments

Ubuntu freeze due to bug in tg3 driver for Broadcom NIC (?)

Published on May 12th 2014 - Listed in Linux Hardware Rant - 0 comments

A real step by step guide how to install JBoss Fuse

Published on May 11th 2014 - Listed in Linux Rant - 5 comments

High I/O on zpool-zones process - troubleshooting the cause

Published on April 30th 2014 - Listed in SmartOS Solaris Linux ZFS - 0 comments

New version of check_smart supports multiple disk check (-g, --global)

Published on April 25th 2014 - Listed in Hardware Linux Nagios Monitoring - 0 comments

How to do a Redis Master Slave switch/failover

Published on April 24th 2014 - last updated on May 26th 2021 - Listed in Database Linux Redis - 0 comments

Multiple ways to monitor physical hard drives, very different results

Published on April 23rd 2014 - last updated on April 22nd 2021 - Listed in Hardware Linux Nagios Monitoring - 1 comments

Debian Wheezy 7.5 is out - too soon?

Published on April 22nd 2014 - last updated on April 29th 2022 - Listed in Linux Rant - 0 comments

Cannot connect to SSH: Connection closed by remote host

Published on April 14th 2014 - Listed in Linux Network - 0 comments

Tracing a Joomla website hack back to com_extplorer module

Published on April 11th 2014 - Listed in Linux Internet Unix Hacks CMS - 1 comments

Debians patching solution for the openssl heartbleed bug

Published on April 10th 2014 - Listed in Linux Internet Unix Hacks - 0 comments

How to remove a newline character of every second line in bash

Published on April 1st 2014 - Listed in Linux Shell Unix Coding - 0 comments

Reminder: Do not start with an integer for a variable name in Bash

Published on March 31st 2014 - Listed in Shell Linux Unix Coding Bash - 0 comments

When github and wget on Debian Wheezy bite each other..

Published on March 25th 2014 - Listed in Linux Internet - 2 comments

Some servers not logging on remote syslog server (rejecting connection)

Published on March 11th 2014 - Listed in Linux - 0 comments

Atmail mail server with orphaned exim processes

Published on March 5th 2014 - Listed in Mail Linux - 0 comments

CentOS 6 installer shows partitioning error for root partition

Published on February 19th 2014 - Listed in Linux - 0 comments

Comparing new Roundcube 1.0 config file and its options to older 0.8.x

Published on February 11th 2014 - Listed in Mail PHP Linux Roundcube - 0 comments

Uploaded and executed perl script through old Joomla vulnerability

Published on February 10th 2014 - Listed in Hacks Linux Internet CMS - 0 comments

Mass convert and migrate mails from mbox to maildir destination

Published on February 4th 2014 - Listed in Mail Linux - 0 comments

Debian not booting: ALERT /dev/disk/by-uuid does not exist

Published on February 2nd 2014 - Listed in Linux Proxmox Virtualization - 0 comments

Set higher preference/priority to an APT repository over another or completely ignore certain repos

Published on January 28th 2014 - last updated on September 24th 2020 - Listed in Linux - 0 comments

Nginx rewrite URL examples with and without redirect address

Published on January 13th 2014 - last updated on February 21st 2022 - Listed in Nginx Internet Linux Unix - 6 comments

check_http and SNI SSL certificates

Published on December 23rd 2013 - last updated on July 13th 2020 - Listed in Nagios Linux Monitoring - 4 comments

Remote SSH work on Android tablet with ConnectBot and physical keyboard

Published on December 23rd 2013 - Listed in Android Linux Hardware - 1 comments

Using date in a cronjob (and solve error grandchild failed error)

Published on December 13th 2013 - last updated on April 29th 2022 - Listed in Linux Shell - 0 comments

PHP application stopped working after PHP upgrade to 5.3 (T_GOTO)

Published on December 9th 2013 - Listed in PHP Linux - 0 comments

Unidentifiable load increase after upgrade to PHP 5.3

Published on December 9th 2013 - Listed in PHP Linux - 0 comments

Cannout mount in LXC container: mount error(13): Permission denied

Published on November 28th 2013 - last updated on December 9th 2021 - Listed in Linux LXC Samba - 0 comments

Updating Wordpress: Got a PCLZIP_ERR_BAD_FORMAT error? The solution.

Published on November 26th 2013 - Listed in Internet Wordpress Linux - 0 comments

check_smart.pl adapted to support cciss and handle grown defect list

Published on November 4th 2013 - last updated on April 22nd 2021 - Listed in Monitoring Hardware Nagios BSD Linux - 4 comments

Monitoring nginx web server with check_nginx_status.pl

Published on November 1st 2013 - Listed in Internet Monitoring Nagios Linux Nginx - 3 comments

OTRS migration to another server; what to look out for

Published on October 29th 2013 - Listed in OTRS Linux Unix Shell - 5 comments

PHP 5.2.17 on Debian Wheezy 7: Solve make error in xp_ssl.c

Published on October 26th 2013 - Listed in PHP Linux - 0 comments

Use Top-Level-Domain (TLD) Wildcard in Apache Virtual Host

Published on October 10th 2013 - Listed in Internet Linux Unix Apache - 0 comments

Linux/Unix seq: Add a zero digit in front of 1-9

Published on October 7th 2013 - Listed in Linux Shell Unix Coding - 2 comments

How to test if a SDHC card is defect or is dying

Published on October 5th 2013 - Listed in Personal Linux Hardware - 0 comments

Nagios-Plugins 1.5 out, check_procs finally with performance data

Published on October 3rd 2013 - Listed in Nagios Linux Monitoring - 0 comments

netio - a tool to measure network speed across operating systems

Published on September 26th 2013 - Listed in Windows Linux BSD Backup Network - 0 comments

Now that's what I call a web hack! (wonder.php, rusztiko.com)

Published on September 5th 2013 - Listed in Internet PHP Linux BSD Hacks - 1 comments

LXC 1.0 stable is coming - the LXC roadmap

Published on September 4th 2013 - Listed in Linux - 0 comments

Portuguese spam tool uploaded through old Joomla

Published on August 19th 2013 - Listed in Internet Linux Hacks - 0 comments

Query disk information from HP Proliant Servers through SNMP

Published on August 8th 2013 - Listed in Hardware Unix Linux - 1 comments

Changed UID of postfix - clean-up steps to do afterwards

Published on August 7th 2013 - Listed in Linux Mail - 0 comments

Looking for tcpdump on Solaris? Use snoop!

Published on July 12th 2013 - Listed in Linux Solaris Shell Network Unix - 1 comments

check_smart with support for hardware raid controllers

Published on July 8th 2013 - Listed in Nagios Hardware Linux Perl Monitoring - 0 comments

Kolab Groupware - Potential but not yet production ready

Published on July 1st 2013 - Listed in Linux Internet Mail Rant - 0 comments

Backing up locally with rsnapshot? Use ionice to reduce load.

Published on June 27th 2013 - Listed in Linux Network - 0 comments

zypper vs. apt and rpm vs. dpkg command comparison and cheat sheet

Published on June 12th 2013 - last updated on April 20th 2021 - Listed in Linux Shell - 2 comments

Seagate ST3000DM001-9YN166: A catastrophic disk

Published on June 11th 2013 - Listed in Hardware Linux Rant - 4 comments

Treasure hunt

Published on June 3rd 2013 - Listed in Linux Windows Personal - 0 comments

How to re-format a USB drive to FAT32 in Linux

Published on June 1st 2013 - last updated on November 20th 2020 - Listed in Linux Windows - 0 comments

dd copy: How long does it take for a 3TB SATA Disk?

Published on June 1st 2013 - Listed in Linux Hardware - 1 comments

PHP 5.4 fails to compile with g++ (use gcc instead)

Published on May 4th 2013 - Listed in Linux PHP - 2 comments

Another confusing PHP 5.4 compilation error: This time mcrypt_module_open

Published on May 4th 2013 - Listed in PHP Linux - 0 comments

PHP 5.4 compilation error: build with IMAP works... no

Published on May 4th 2013 - Listed in Linux PHP - 0 comments

How to solve knife (chef) error Exception: NoMethodError

Published on May 3rd 2013 - Listed in Linux - 0 comments

How to monitor qmail mail queue (check_mailq alternative)

Published on April 29th 2013 - Listed in Nagios Linux Shell Mail Monitoring - 2 comments

Handling qmail queue

Published on April 19th 2013 - Listed in Linux Shell Mail - 1 comments

Set up OTRS so other agents can respond to tickets with different owner

Published on April 4th 2013 - Listed in Internet Linux - 1 comments

User quota disk space monitoring with check_disk

Published on March 18th 2013 - Listed in BSD Linux Shell Nagios Monitoring - 0 comments

High CPU load due to mass imap-logins on dovecot

Published on March 15th 2013 - Listed in Linux Internet Mail - 0 comments

The search for the perfect Audio Player on Linux

Published on March 12th 2013 - Listed in Linux Multimedia - 0 comments

Tons of old Joomla CMS still running on the web

Published on March 7th 2013 - Listed in Internet Linux Rant - 0 comments

rm: cannot remove due to Input/output error (EXT4-fs error)

Published on March 2nd 2013 - Listed in Linux Hardware - 1 comments

A practical example for a logical volume reduce with ext file system

Published on January 31st 2013 - Listed in Linux Unix - 0 comments

grub2 boot issues after hdd replacement

Published on January 26th 2013 - Listed in Linux Shell Hardware Rant - 0 comments

Dovecot suicide after ntp activation

Published on January 21st 2013 - Listed in Linux Unix Mail Rant - 0 comments

Follow up on the modified shop installation error

Published on January 19th 2013 - Listed in PHP Internet Linux - 0 comments

MySQL: Cannot create or drop Stored Procedures when binary logs active

Published on January 7th 2013 - Listed in Database Linux MySQL - 0 comments

Building a home file server with HP Proliant N40L

Published on December 28th 2012 - Listed in Hardware Linux Samba - 4 comments

Nagiosgraph not showing correct values for disk space

Published on December 19th 2012 - Listed in Nagios Linux Internet Shell Monitoring - 0 comments

Atmail increasingly uses disk space due to tmp files

Published on November 30th 2012 - Listed in Linux Mail - 0 comments

Get MySQL Status - but only some values

Published on November 28th 2012 - Listed in Database Linux Shell MySQL - 2 comments

Linux Distro Upgrade openSuSE 12.1 to 12.2 - a review

Published on November 8th 2012 - Listed in Linux - 0 comments

Disk failures are not always seen by S.M.A.R.T.

Published on November 4th 2012 - Listed in Linux Hardware Rant - 1 comments

mailx command sends mail body as attachment (noname)

Published on November 2nd 2012 - Listed in Linux Mail - 3 comments

Send e-mails from local Postfix to local Exim on same host

Published on October 25th 2012 - Listed in Linux Internet Mail - 0 comments

Check/monitor SMTP server for TLS and SSL connections

Published on October 22nd 2012 - Listed in Linux Nagios Internet Mail Monitoring - 0 comments

Analysis with dtrace: Filesystem is full although files were deleted

Published on October 18th 2012 - Listed in Linux Shell - 0 comments

Install imagemagick as PHP extension in Debian without apt

Published on October 6th 2012 - Listed in PHP Linux - 1 comments

Use dtrace to analyze Apache process consuming 100% CPU

Published on October 4th 2012 - Listed in Linux Internet Apache - 3 comments

NVIDIA Quadro NVS 295 running on openSuSE 12 with dual screens

Published on September 20th 2012 - Listed in Hardware Linux - 0 comments

GoogleBot used as HTTP Agent by Hackers/Botscripts

Published on September 5th 2012 - Listed in PHP Internet Linux Hacks - 0 comments

Spam-Attacks (possibly Dark Mailer) through abused FTP account within 1s

Published on September 3rd 2012 - Listed in Internet PHP Linux Hacks Mail - 0 comments

CentOS 6.3 changed device names from /dev/cciss to /dev/sdX

Published on August 29th 2012 - Listed in Linux Hardware - 0 comments

Some notes on a MySQL downgrade 5.1 to 5.0

Published on August 16th 2012 - Listed in Linux Database MySQL - 0 comments

Script to calculate/show percentage of current year passed

Published on August 13th 2012 - Listed in Linux PHP Shell Coding - 0 comments

Share your desktop with VNC server on Linux (openSuSE 12.1)

Published on August 12th 2012 - Listed in Linux Network - 0 comments

Postfix: Enforce sending encrypted e-mails with TLS (smtp over TLS)

Published on August 3rd 2012 - Listed in Linux Internet Mail - 1 comments

How to mount Android (MTP)-Storage on Linux (openSuSE 12.1)

Published on July 27th 2012 - Listed in Android Linux - 10 comments

How to replace a hard or solid state drive in Linux software raid

Published on July 25th 2012 - last updated on October 2nd 2020 - Listed in Linux Hardware - 0 comments

Joomla forms (PHPMailer) do not work with mini_sendmail

Published on July 17th 2012 - Listed in Internet PHP Linux Mail - 0 comments

PHP mail() not working in chroot vhost (Could not execute mail delivery...)

Published on June 22nd 2012 - Listed in PHP Linux Mail - 2 comments

Fixing Majordomo/Majorcool error: majordomo.cf Not Readable; Stopped.

Published on June 19th 2012 - Listed in Linux Mail - 0 comments

Add SLES11-SP2(-Updates) to Novell SMT Repository Mirroring

Published on May 23rd 2012 - Listed in Linux Internet - 2 comments

Solving Bind9 reload errors after Debian upgrade to Squeeze

Published on May 17th 2012 - Listed in Linux - 0 comments

Proftpd: 530 Login incorrect due to invalid shell

Published on May 14th 2012 - Listed in Linux Internet - 2 comments

NTP servers should be physical

Published on May 14th 2012 - Listed in Linux - 2 comments

Webalizer Statistics stopped working after Debian upgrade

Published on May 7th 2012 - Listed in Internet Linux - 0 comments

Using aptitude/apt-get with Proxy Authentication

Published on May 4th 2012 - Listed in Linux Network - 1 comments

Linux server crash due to defect memory

Published on April 27th 2012 - Listed in Linux Rant - 0 comments

NetBackup init script for 32bit Linux (SLES)

Published on April 11th 2012 - Listed in Backup Linux - 1 comments

Linux crash after 208+ days due to bug in kernel 2.6.32

Published on April 4th 2012 - Listed in Linux Rant - 2 comments

Nagios plugin check_disk_smb outputs: Result from smbclient not suitable

Published on March 9th 2012 - last updated on March 18th 2021 - Listed in Nagios Linux Monitoring - 1 comments

Basic math calculations with fields in MySQL query (output in new column)

Published on March 7th 2012 - Listed in Linux Database MySQL - 0 comments

How to solve SuSE SMT errors (Access to http URIs has been disabled)

Published on March 6th 2012 - Listed in Linux - 1 comments

How to convert ext2 file system to ext3

Published on February 14th 2012 - last updated on April 29th 2022 - Listed in Linux - 0 comments

Upgrade of VPS server (Xen) from Debian Lenny to Squeeze (MySQL problems)

Published on February 4th 2012 - Listed in Linux MySQL Database - 0 comments

Nagios plugin check_procs misses perfdata and how you can add it

Published on January 18th 2012 - Listed in Nagios Linux Monitoring - 2 comments

How to solve locale error: perl: warning: Setting locale failed.

Published on January 2nd 2012 - Listed in Linux - 0 comments

Deprecated PHP Warnings after Confixx upgrade to 3.3.9

Published on December 15th 2011 - Listed in Linux PHP - 1 comments

Apache mod comparison: mod_php vs mod_suphp vs mod_fcgid vs mod_fastcgi

Published on December 4th 2011 - last updated on March 22nd 2019 - Listed in Linux PHP Internet Apache - 2 comments

check_esx3.pl Nagios plugin error (Server version unavailable)

Published on November 25th 2011 - Listed in Nagios VMware Linux Virtualization Monitoring - 2 comments

SLES11SP1 asks for db-devel - but there isn't any

Published on November 21st 2011 - Listed in Linux Database - 2 comments

Update on the timthumb Wordpress hack - it happened again!

Published on November 12th 2011 - Listed in Linux PHP Internet Hacks - 0 comments

Wordpress timthumb hack - a PHP hack story

Published on November 9th 2011 - Listed in Linux PHP Hacks Wordpress - 0 comments

When ndc and bind reload won't work (ndc: error: ctl_client)

Published on October 27th 2011 - Listed in Linux - 0 comments

Problems when compiling PHP 5.3.8 with fpm and fastcgi (php-cgi)

Published on October 26th 2011 - Listed in PHP Linux - 0 comments

Kernel (2.6.32-5-amd64) upgrade problem on Debian Squeeze (solved)

Published on October 8th 2011 - Listed in Linux - 0 comments

How to install perl DBD::Oracle on SLES10 (without CPAN)

Published on September 27th 2011 - Listed in Linux Database - 0 comments

Certified Linux Engineer

Published on August 19th 2011 - Listed in Personal Linux - 0 comments

Spam comparison: Ironport vs. Open Source solution

Published on August 12th 2011 - Listed in Linux Internet Mail - 1 comments

Upgraded to PHP 5.3: Suddenly open_basedir restriction warnings appear

Published on August 3rd 2011 - Listed in PHP Linux - 0 comments

PHP 5.3.6 configure fails: libjpeg.(a|so) or libpng.(a|so) not found

Published on August 3rd 2011 - Listed in PHP Linux - 0 comments

Confixx upgrade 3.3.6 -> 3.3.8: Some notes

Published on July 29th 2011 - Listed in Linux PHP - 0 comments

PHP compilation fails on IMAP U8T_DECOMPOSE: The Debian solution

Published on July 26th 2011 - Listed in PHP Linux - 0 comments

Comparing SSH port forwarding Linux vs. Mac OS X

Published on July 21st 2011 - last updated on September 23rd 2020 - Listed in Linux Shell Macintosh - 0 comments

Mount a HDD which is a member in Intel Raid to back up data

Published on July 8th 2011 - Listed in Windows Hardware Linux - 0 comments

How to dump and restore a Postgres database

Published on June 24th 2011 - Listed in Linux Database Postgres - 0 comments

Perfdata now in check_mysql_slavestatus

Published on June 22nd 2011 - Listed in Linux Nagios Database MySQL Monitoring - 0 comments

What the countdown 'until Death of Computers' means (the Y2K38 problem)

Published on June 17th 2011 - Listed in Personal Internet Linux Unix - 3 comments

How to enable http access logs in Tomcat

Published on June 9th 2011 - Listed in Linux Tomcat - 0 comments

Postfix rewrite mail address ONLY for outgoing/sending e-mail

Published on June 1st 2011 - Listed in Linux Mail - 0 comments

Howto change default MySQL privileges/permissions in Confixx

Published on May 24th 2011 - Listed in Linux Internet Database MySQL - 0 comments

Apache does not start after OTRS upgrade

Published on April 14th 2011 - Listed in Linux Apache - 0 comments

The fight to install HP Mgmt Agents and System Management Homepage

Published on March 24th 2011 - Listed in Hardware Linux Rant - 2 comments

Googlebot and Apache CLOSE_WAIT's: SOLVED!

Published on February 7th 2011 - Listed in Linux Internet Apache - 0 comments

Confixx manual mail aliases in /etc/aliases

Published on February 4th 2011 - Listed in Linux - 0 comments

Googlebot freezes Apache and server load increases

Published on February 3rd 2011 - Listed in Linux Internet Apache - 0 comments

Apache segfault on phpinfo after PHP update (eAccelerator)

Published on January 30th 2011 - Listed in PHP Linux Apache - 0 comments

On a Hacker's trail

Published on January 25th 2011 - Listed in Internet Linux PHP Hacks - 2 comments

Enormous load by OTRS 3

Published on January 4th 2011 - Listed in Linux - 0 comments

iPhone picture mails tagged as Spam

Published on December 10th 2010 - Listed in Internet Linux Mail - 0 comments

How to create automatic PDF from Nagios Availability Reports?

Published on December 1st 2010 - Listed in Nagios Linux Monitoring - 8 comments

Where did the mcrypt command on SLES10 go?

Published on November 9th 2010 - Listed in Linux - 0 comments

SLES 11 SP1 contains VMware vmxnet3 and paravirtual drivers

Published on September 13th 2010 - Listed in VMware Linux Virtualization - 0 comments

ESXi 4.1 and the disk capacity... Update!

Published on September 3rd 2010 - Listed in VMware Hardware Linux Virtualization - 0 comments

The tabulator in bash

Published on August 23rd 2010 - Listed in Linux Shell Coding - 0 comments

HowTo Change Confixx email account password in Roundcube

Published on August 14th 2010 - Listed in Internet Linux PHP Database MySQL Roundcube - 0 comments

ESXi 4.1 does not use full disk capacity for vmfs3

Published on July 22nd 2010 - Listed in VMware Linux Virtualization - 0 comments

Zip-Unpacking problems with Amavisd-new 2.6.4

Published on July 7th 2010 - Listed in Linux Mail - 0 comments

VMware: vMotion stops at 10% and fails with Invalid fault

Published on May 24th 2010 - Listed in VMware Linux Virtualization - 0 comments

Follow-up on Connection Error when trying to send mail on Android

Published on April 26th 2010 - Listed in Android Linux Mail - 0 comments

Connection failed error when trying to send mail on Android

Published on April 22nd 2010 - Listed in Android Linux Mail Rant - 0 comments

Why -while read line- does not work with stdout

Published on April 16th 2010 - Listed in Linux Shell Coding - 0 comments

New Nagios Plugin: Check Confixx License

Published on April 3rd 2010 - Listed in Nagios Linux Internet Monitoring - 0 comments

HowTo Upgrade Debian etch to lenny (and solve Apache warnings)

Published on March 29th 2010 - Listed in Linux Apache - 0 comments

PHP Compilation fails after upgrade to Debian lenny

Published on March 19th 2010 - Listed in PHP Linux - 0 comments

$* is no longer supported - Confixx Counterscript error

Published on March 15th 2010 - Listed in Linux Mail - 0 comments

Confixx Counterscript fails after Debian Upgrade (Lenny)

Published on March 15th 2010 - Listed in Linux Internet - 0 comments

VMware: Schedule automatic reboot or shutdown of physical ESX(i) server

Published on February 12th 2010 - Listed in VMware Linux Virtualization - 2 comments

Installing Zend Optimizer on PHP 5.2.11 and Apache worker

Published on January 10th 2010 - Listed in PHP Linux Apache - 0 comments

Postfix rejects incoming e-mails with 450 Server configuration error

Published on October 21st 2009 - Listed in Linux Mail - 0 comments

Fighting Spam with SpamAssassin

Published on September 22nd 2009 - Listed in Internet Linux Mail - 0 comments

Testing a new Mailserver

Published on June 22nd 2009 - Listed in Internet Linux Mail - 0 comments

Cleanup Confixx after a server transfer

Published on October 21st 2008 - Listed in Linux MySQL Database - 0 comments

PHP make install on a Debian system with Apache 2

Published on October 13th 2008 - Listed in PHP Linux Shell Apache - 0 comments

Current project: Webserver Transfer

Published on June 19th 2008 - Listed in Linux PHP Personal - 0 comments

New How To's

Published on June 4th 2008 - Listed in VMware PHP Linux Shell Internet - 0 comments