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Ztyx
Asked: 2011-08-18 04:48:31 +0800 CST

Why is my munin plugin being double executed (concurrently)?

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I have a custom made munin plugin that currently is being executed twice every time

$ ps fax
16844 ?        Ss     0:00 /usr/sbin/munin-node
18206 ?        S      0:00  \_ /usr/sbin/munin-node
18863 ?        Ss     0:00  |   \_ /bin/bash /etc/munin/plugins/fetch_partner 
18910 ?        S      0:00  |       \_ wget -q -O /tmp/partner_debug_page.txt --keep-session-cookies --save-cookies /tmp/partne
18209 ?        S      0:00  \_ /usr/sbin/munin-node
18892 ?        Ss     0:00      \_ /bin/bash /etc/munin/plugins/fetch_partner 
18917 ?        S      0:00          \_ wget -q -O /tmp/partner_debug_page.txt --keep-session-cookies --save-cookies /tmp/partne

According to the munin-node log there are no timeouts happening. According to munin master it is graphing this plugin twice every time (arround 20 seconds inbetween those graphs, so I guess it's from each fetch).

Does anyone know why this is happening? It looks funny that /usr/sbin/munin-node is being called twice...

monitoring munin system-monitoring

1 Answers

  1. Munin runs each plugin twice per (five minute) cycle: once to get the configuration, and a second time to get the plugin's values.

    http://munin-monitoring.org/wiki/HowToWritePlugins

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