NetBackup errors (get_string() failed) appear in Report-Problems

Written by - 0 comments

Published on - Listed in Windows Nagios Backup Monitoring


Today I was contacted by another Systems Engineer, that weird errors were detected in the NetBackup application. The errors could be seen in Reports -> Problems (in the GUI).

All of them looked the same and were triggered every 3 mins:

could not process request from pmoinfr01.local.domain
get_string() failed - premature end of file encountered (5)

Here the actual screenshot:

NetBackup errors could not process request, get_string failed

Already by the name 'pmoinfr01' I knew that my Nagios monitoring must be involved, the fact that this happens every 3 mins is another indicator (as my standard checks are launched every 3rd minute). But which check is doing this?

Besides the standard operating systems checks as CPU, Memory, Disk, etc. I also check typical NetBackup services and ports for their availability.
The important ports to check on a NetBackup Master server are: 13701, 13720, 13721, 13782. These ports are checked by check_tcp.

After some tcpdumping and manual tests, I figured out that check_tcp on port 13720 is causing these critical errors in the logs (Reports). It seems that check_tcp is submitting code to this port which can't be handled on the target side which then result in errors in the logs.

So if one receives such errors in his NetBackup application, you must deactivate the monitoring of port 13720 (at least not by check_tcp) and the spamming in your logs will stop.


Add a comment

Show form to leave a comment

Comments (newest first)

No comments yet.

RSS feed

Blog Tags:

  AWS   Android   Ansible   Apache   Apple   Atlassian   BSD   Backup   Bash   Bluecoat   CMS   Chef   Cloud   Coding   Consul   Containers   CouchDB   DB   DNS   Database   Databases   Docker   ELK   Elasticsearch   Filebeat   FreeBSD   Galera   Git   GlusterFS   Grafana   Graphics   HAProxy   HTML   Hacks   Hardware   Icinga   Influx   Internet   Java   KVM   Kibana   Kodi   Kubernetes   LVM   LXC   Linux   Logstash   Mac   Macintosh   Mail   MariaDB   Minio   MongoDB   Monitoring   Multimedia   MySQL   NFS   Nagios   Network   Nginx   OSSEC   OTRS   Office   PGSQL   PHP   Perl   Personal   PostgreSQL   Postgres   PowerDNS   Proxmox   Proxy   Python   Rancher   Rant   Redis   Roundcube   SSL   Samba   Seafile   Security   Shell   SmartOS   Solaris   Surveillance   Systemd   TLS   Tomcat   Ubuntu   Unix   VMWare   VMware   Varnish   Virtualization   Windows   Wireless   Wordpress   Wyse   ZFS   Zoneminder