TrueNAS Nagios Plugin

Description

Checks ZFS health and available disk space using SNMP V2 Specify a 'zpool' and 'dataset' to check, health mode is for zpools only. Handles TrueNAS SNMP OID's a bit better than 'check_smtp' by using 'OID.Index'. The check is meant to be used with multiple service defines in a nagios host cfg. See Example below. Options can also be set as variables in the script itself (instead of using args). Tested with TrueNAS CORE 12.0 U2 and 13.0-U4, should work with zVault (untested)

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