zabbix: Add mysql userstats item

Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/zabbix-agent/files/mysql-user-stats.pl

+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+use DBI;
+use JSON;
+
+my $config = $ARGV[0] // "$ENV{HOME}/.my.cnf";
+
+my $db = DBI->connect("DBI:mysql:mysql_read_default_file=$config");
+$db->{FetchHashKeyName} = "NAME_lc";
+print encode_json($db->selectall_hashref("select * from information_schema.user_statistics", "user"));

roles/zabbix-agent/tasks/main.yml

@@ -24,6 +24,7 @@
   copy: src={{item}} dest=/usr/local/bin/{{item}} mode=0755 owner=root group=root
   with_items:
     - systemd-units-failed.py
+    - mysql-user-stats.pl
 
 - name: run zabbix agent service
   service: name=zabbix-agent enabled=yes state=started

roles/zabbix-agent/templates/zabbix_agentd.conf

@@ -12,6 +12,7 @@ TLSPSKFile=/etc/zabbix/zabbix_agentd.psk
 UserParameter=mysql.ping,mysqladmin --defaults-file="/etc/zabbix/zabbix_agentd.my.cnf" ping|grep alive|wc -l
 UserParameter=mysql.version,mysql --defaults-file="/etc/zabbix/zabbix_agentd.my.cnf" -V
 UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | mysql --defaults-file="/etc/zabbix/zabbix_agentd.my.cnf" -N | awk '{print $$2}'
+UserParameter=mysql.userstats,/usr/local/bin/mysql-user-stats.pl "/etc/zabbix/zabbix_agentd.my.cnf"
 
 UserParameter=systemd.unit.is-active[*],systemctl is-active --quiet '$1' && echo 1 || echo 0
 UserParameter=systemd.unit.is-failed[*],systemctl is-failed --quiet '$1' && echo 1 || echo 0