Scientific Linux 6
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Munin - Set Alart notification
2011/06/18
 
Set Alart notification.
[1] Configuration
[root@master ~]#
vi /etc/munin/munin.conf
# line 58: add

contact.email.command mail -s "Munin-notification for ${var:host}" root
# send notification forcely

[root@master ~]#
su - munin --shell=/bin/bash -c "/usr/share/munin/munin-limits --contact email --force"
# following email is sent

From munin@master.srv.world  Sat Jun 18 01:54:15 2011
Return-Path: <munin@master.srv.world>
X-Original-To: root
Delivered-To: root@master.srv.world
Date: Sat, 18 Jun 2011 01:54:14 +0900
To: root@master.srv.world
Subject: Munin-notification for master.srv.world
User-Agent: Heirloom mailx 12.4 7/29/08
Content-Type: text/plain; charset=us-ascii
From: munin@master.srv.world (Munin user)
Status: R

srv.world :: master.srv.world :: Disk usage in percent
        OKs: / is 5.99, /boot is 14.05, /dev/shm is 0.00.

srv.world :: master.srv.world :: Inode usage in percent
        OKs: / is 2.00, /boot is 1.00, /dev/shm is 1.00.

srv.world :: master.srv.world :: File table usage
        OKs: open files is 864.00.

srv.world :: master.srv.world :: Munin processing time
        OKs: munin update is 4.43, munin graph is 4.00.

srv.world :: master.srv.world :: eth2 errors
        OKs: packets is 0.00, packets is 0.00.
[2] The setting of threshold is [ plugin_name.field_name.(warning | critical) args ], it is shown on the graph. Some examples are follows.
[root@master ~]#
vi /etc/munin/munin.conf
# set threshold to target host

[node01.srv.world]
   address 10.0.0.101
   use_node_name yes
# warn with 80% of CPU usage, critical with 90%

   cpu.system.warning 80
   cpu.system.critical 90
# warn with 80% of disk usage, critical with 90%

   df._dev_mapper_VolGroup_lv_root.warning 80
   df._dev_mapper_VolGroup_lv_root.critical 80
# wanr with 10 of loginuser, critical with 20

   users.tty.warning 10
   users.tty.critical 20
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