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Munin graphs is very small. That makes some multigrpahs useless for me. Is it possible to increase graph image size?

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The documentation makes reference to two global attributes, graph_width and graph_height. Have you tried changing them? Note that these are global for a particular plugin, not for the whole munin installation; you will need to set them in the config output of a single plugin (or in munin.conf) for them to take effect.

Just to check, I put the following lines into my munin.conf:

load.graph_width 1200 load.graph_height 1000

and my load graph got absolutely massive, so I expect this will work for you, too.

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    don't know why, but "graph_width" doesn't work for "Disk IOs", "Disk latency", "Disk utilization" graphs, only height is changed. Commented Feb 25, 2011 at 9:21
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    @John: If you look at thee diskstats plugin, it says the graph width is set dynamically and has a default of 400 unless you override env.graph_width in the plugin config. Commented Mar 30, 2011 at 16:11
  • Is there a way to change this for all graphs? Commented Apr 6, 2012 at 10:00
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    Not to my knowledge, though note that you can set it on a plugin-by-plugin basis in munin.conf, which is at least centralised. Commented Apr 6, 2012 at 16:02
  • you can also add them on the node or group level: graph_height 1200. It has the same issue for the graphs with dynamic graph width. Commented Jul 4, 2012 at 23:17
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For the record, it seems that with munin 2.0.6 it is possible to set these on the global level, with two caveats:

  • if using CGI graphs (as munin 2.x does by default), updates to the munin.conf file are not picked up automatically, so restarting all the munin-cgi-graph processes is necessary
  • sometime, munin-cgi-graph seems to "forget" these and revert to the default; a restart, again, helps

Tested on Debian sid with munin 2.0.6-1.

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