Handling validity check failed and empty client certificate chain errors in Elasticsearch

Published on March 1st 2022 - last updated on March 7th 2022 - Listed in Elasticsearch ELK Monitoring TLS SSL Security - comments

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

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

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

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

Thousands of JSON parsing errors after Logstash upgrade to 7.15

Published on December 6th 2021 - last updated on January 3rd 2022 - Listed in Elasticsearch ELK Logstash - comments

Elasticsearch monitoring plugin check_es_system 1.12.0 released: Major improvements and enhancements!

Published on December 3rd 2021 - Listed in Elasticsearch ELK Monitoring - comments

Elasticsearch: unknown setting [xpack notification slack account my-watcher url]

Published on October 12th 2021 - Listed in Elasticsearch ELK - comments

Elasticsearch failed on parsing mappings on index creation ([_default_] mappings are not allowed)

Published on October 5th 2021 - Listed in Elasticsearch ELK - comments

Elasticsearch X-Pack error after upgrade: Incorrect realm settings found

Published on October 1st 2021 - Listed in Elasticsearch ELK - comments

Elasticsearch error: The index was created with version [x.x.x] but the minimum compatible version is [x.x.x]

Published on September 30th 2021 - Listed in Elasticsearch ELK - comments

How to quickly change the number of replicas setting in an Elasticsearch Index

Published on July 19th 2021 - Listed in Elasticsearch ELK Monitoring - comments

Elasticsearch monitoring plugin check_es_system 1.11.1 released: Two bug fixes

Published on June 16th 2021 - Listed in Elasticsearch Monitoring ELK - comments

Prevent certain log events/messages to be indexed into Elasticsearch by using Logstash drop filters

Published on January 19th 2021 - Listed in ELK Logstash Elasticsearch VMware - comments

Monitoring plugin check_es_system 1.11.0 released: Show read only index(es) in output and jq is the new default JSON parser

Published on November 25th 2020 - Listed in Elasticsearch Monitoring ELK - comments

Nginx and Apache access logs in Kibana and how to search for request path / (slash)

Published on September 28th 2020 - last updated on September 29th 2020 - Listed in ELK Kibana Nginx Apache Elasticsearch - comments

Logstash to Logstash log forwarding using the Lumberjack output plugin

Published on May 28th 2020 - Listed in ELK Elasticsearch Filebeat Logstash - comments

Upgrading Filebeat from 5.x to 7.x and Logstash from 5.x to 6.x and circumvent the type field problem

Published on May 20th 2020 - Listed in ELK Elasticsearch Filebeat Logstash - comments

Using ELK to collect Nginx logs and show TLS version and ciphers used by HTTP clients

Published on March 27th 2020 - last updated on September 30th 2020 - Listed in ELK Filebeat Nginx Internet TLS Security - 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 - comments

Monitoring plugin check_es_system 1.7 released: Added check to verify Elasticsearch cluster master node

Published on November 4th 2019 - Listed in Elasticsearch Monitoring ELK - comments

Kibana throws error X of Y shards failed on visualizations and dashboards

Published on September 30th 2019 - Listed in ELK Elasticsearch Filebeat - comments

Elasticsearch rejected execution of processing of BulkShardRequest or: monitoring thread pools with check_es_system v 1.6!

Published on September 9th 2019 - Listed in Elasticsearch Monitoring ELK - comments

Monitoring plugin check_es_system 1.5.1 released, fixes bug in Elasticsearch cluster health lookup

Published on September 5th 2019 - Listed in Elasticsearch Monitoring ELK - comments

Version 1.5 of check_es_system adds monitoring for read-only indexes in Elasticsearch

Published on June 26th 2019 - Listed in Monitoring Elasticsearch Icinga Nagios ELK - comments

Monitoring plugin check_es_system 1.4 released

Published on April 26th 2019 - Listed in Monitoring Elasticsearch Icinga Nagios ELK - comments

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

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

Monitoring plugin check_es_system 1.3 released

Published on April 3rd 2019 - Listed in Monitoring Elasticsearch Icinga Nagios ELK - comments

Docker logging with GELF using tcp: The good, the bad, the ugly

Published on April 3rd 2019 - Listed in Docker Container ELK Logstash - comments

Elasticsearch ignored disk watermark settings and enforced read only index

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

Application (Docker/Kubernetes) containers and STDOUT logging

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

Reduce the number of shards of an Elasticsearch index (and template)

Published on December 27th 2018 - last updated on October 1st 2021 - Listed in ELK Elasticsearch - comments

Logstash gelf output plugin gone after udpate

Published on November 28th 2018 - Listed in ELK Logstash - comments

ELK stack not sending notifications anymore because of DNS cache

Published on November 20th 2018 - Listed in ELK Java DNS - 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 - comments

ElasticSearch stopped to assign shards due to low disk space

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

Confused ElasticSearch refuses to insert data due to mapping conflict

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

Increase JVM Heap Size Memory for ElasticSearch

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

Solving _grokparsefailure on syslog entries in ELK stack

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

Elastic X-Pack error after updating Logstash

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

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

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

Install and configure Elastic Filebeat through Ansible

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