check_rsnapshot.pl

This plugin is designed for scenarios where multiple backups are defined in different rsnaphost configuration files. For example, to setup nagios to monitor backups defined in an rsnapshot configuration file 'backup-1.conf', where nagios and rsnapshot run on different machines: 1) Install this plugin on the rsnapshot server. 2) Edit the plugin to set '$conf_dir' to the location of our rsnapshot config files 3) Enable a mechanism for checking this remotely i.e. for e.g. for NRPE, add a line like: command[check_rsnapshot_backup-1]=/usr/local/bin/check_rsnapshot.pl --conf backup-1.conf to your nrpe.cfg. 4) Define appropriate nagios servicegroups/hostgroups i.e.: define hostgroup { hostgroup_name rsnapshot-servers alias rsnapshot servers members backupserver1.my.domain.com } define servicegroup { servicegroup_name rsnapshot-service alias rsnaphost backup service } 5) Add a nagios service definition for each rsnapshot configuration you wish to monitor: define service { use service-template hostgroup_name rsnapshot-servers service_description rsnapshot backup: backup-1.conf service_groups rsnapshot-service check_command check-nrpe!check_rsnapshot_backup-1 } Reload NRPE/nagios configurations and hopefully all will be working. Rather than analysing on-disk data for file numbers like some plugins do , in this case we are checking for errors reported in the log file for the last instance of each backup interval run, along with warnings for backups which have been running for >24 hours or backups which have not completed cleanly (i.e. a lockfile remains but no backup is running) The configuration file to be used should be passed on the command line using the '--conf' argument. If the specified config file does not exist, the plugin will prepend the value of $conf_dir to this path, consequently it is not necessary to fully qualify the path to the configuration file if $conf_dir is correctly set. The number of snapshots found for each interval can also optionally be checked by adding the '--missing' argument. This checks that the number of on-disk snapshosts for each interval matchches those defined in the configuration. This is optional since it can take some months to build up a full set of snapshots depending on rotation policies. Since this plugin is parsing the configuration and log files, it is potentially fragile should these formats change. It has been developed and tested against rsnapshot 1.3.1 running on Solaris 10, but should work ok on any unixy platform.

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