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Munin : Set Trigers
2015/02/18 |
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The monitoring target items are set as plugins and trigers are defined in some plugins by default,
but if you'd like to add more trigers to a plugin, configure like follows.
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| [1] | It's possible to confirm plugins like follows. |
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# current enabled plugins are located under the directory below [root@dlp ~]# ls /etc/munin/plugins cpu fw_packets memory ntp_states proc_pri df if_err_eth0 netstat open_files swap df_inode if_eth0 ntp_kernel_err open_inodes threads diskstats interrupts ntp_kernel_pll_freq postfix_mailqueue uptime entropy irqstats ntp_kernel_pll_off postfix_mailvolume users forks load ntp_offset processes vmstat # installed plugins are located under the directory below [root@dlp ~]# ls /usr/share/munin/plugins acpi nvidia_ amavis open_files apache_accesses open_inodes apache_processes openvpn apache_volume perdition ..... ..... |
| [2] | It's possible to display current values for each plugin. |
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# display values for cpu plugin [root@dlp ~]# munin-run cpu user.value 78157 nice.value 89926 system.value 18768 idle.value 15468097 iowait.value 44479 irq.value 282 softirq.value 102 steal.value 279 guest.value 0 # display values for df plugin [root@dlp ~]# munin-run df _dev_mapper_VolGroup_lv_root.value 8.95905168081408 _dev_shm.value 0 _dev_vda1.value 26.2256196272281 |
| [3] | Set triger's value in munin.conf like follows. ⇒ [plugin name].[field name].[warning | critical] min-value:max-value The field name is just the one which is displayed when executing "munin-run" command. The min-value or max-value can be omitted. |
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[root@dlp ~]#
vi /etc/munin/munin.conf # set triger on target node [dlp.srv.world] address 127.0.0.1 use_node_name yes # set 80% of warning and 90% of critical for user field in cpu plugin cpu.user.warning :80 cpu.user.critical :90 # set 80% of warning and 90% of critical for root partition field in df plugin df._dev_mapper_VolGroup_lv_root.warning :80 df._dev_mapper_VolGroup_lv_root.critical :90 |
| [4] | if you configured notification setting and a value is over from the triger's value, the email is sent like follows. |
From munin@dlp.srv.world Fri Feb 19 159:00:07 2015
Return-Path: <munin@dlp.srv.world>
X-Original-To: root
Delivered-To: root@dlp.srv.world
Date: Fri, 19 Feb 2015 19:00:07 +0900
To: root@dlp.srv.world
Subject: Munin-notification for srv.world::dlp.srv.world
User-Agent: Heirloom mailx 12.4 7/29/08
Content-Type: text/plain; charset=us-ascii
From: munin@dlp.srv.world (Munin user)
Status: RO
srv.world :: dlp.srv.world :: CPU usage
WARNINGs: user is 100.26 (outside range [:80]).
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