zabbix-agent: monitor btrfs subvolumes for dragon

host_vars/dragon.archlinux.org

@@ -17,3 +17,4 @@ archbuild_fs: 'btrfs'
 
 zabbix_agent_templates:
   - Template OS Linux
+  - Template Btrfs

roles/zabbix-agent/files/zabbix-btrfs-subvolume.sh

+#!/bin/bash
+btrfs subvol list -d / | wc -l

roles/zabbix-agent/tasks/main.yml

@@ -95,6 +95,7 @@
     - postgresql-dbsize-stats.pl
     - postgresql-user-stats.pl
     - memcached-stats.py
+    - zabbix-btrfs-subvolume.sh
 
 - name: Install helper scripts
   copy: src=nginx-zabbix.pl dest=/usr/local/bin/nginx-zabbix.pl mode=0755 owner=root group=root

roles/zabbix-agent/templates/zabbix-agent-sudoers.conf.j2

-zabbix-agent ALL=(root) NOPASSWD: /usr/local/bin/borg list --json --format {start}{end} --sort-by timestamp --last 1, /usr/local/bin/mysql-dbsize-stats.pl, /usr/local/bin/memcached-stats.py
+zabbix-agent ALL=(root) NOPASSWD: /usr/local/bin/borg list --json --format {start}{end} --sort-by timestamp --last 1, /usr/local/bin/mysql-dbsize-stats.pl, /usr/local/bin/memcached-stats.py, /usr/local/bin/zabbix-btrfs-subvolume.sh
 zabbix-agent ALL=(postgres) NOPASSWD: /usr/local/bin/postgresql-dbsize-stats.pl, /usr/local/bin/postgresql-user-stats.pl

roles/zabbix-agent/templates/zabbix_agentd.conf

@@ -71,3 +71,5 @@ UserParameter=arch_archive.db_count,echo 'select count(*) from files;' | sqlite3
 UserParameter=memcached.stats[*],sudo /usr/local/bin/memcached-stats.py --socket '$1'
 UserParameter=memcached.stats_discover,/usr/local/bin/memcached-stats.py --discover
 #UserParameter=postgresql.dbsize_discover,sudo -u postgres /usr/local/bin/postgresql-dbsize-stats.pl discover
+
+UserParameter=btrfs.subvolume_count,sudo /usr/local/bin/zabbix-btrfs-subvolume.sh