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> It's as I thought - your data is accurate but rrd has been given a |
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> completely wrong method to derive the graphs. |
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> |
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> Munin graphs for section "Network" do not have to be in a file called |
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> "network" - it's just a category and the plugin defines what web-page |
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> section it must be in. In your case, the relevant plugin is |
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> netstat_multi which doesn't often get installed. It's data source is |
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> "netstat -s" so grep that output for "timeout" to see it. |
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> |
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> Timeouts are cumulative counters, they do not get less till they wrap |
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> around. So to scale them, the plugin gets the rrd file to subtract |
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> previous reading from current reading and divide by the time interval to |
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> get the timeouts/sec. This is all done inside rrd when the data files |
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> are updated (it's quite a lot of magic) |
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> |
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> That plugin sets the graph type to DERIVE |
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> (/etc/munin/plugins/netstat_multi around line 190. I feel it should be |
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> GAUGE or COUNTER. |
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> |
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> The proper reference on rrd is |
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> http://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html |
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> and the munin docs are |
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> https://munin.readthedocs.org/en/latest/index.html |
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> |
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> You must edit the plugin file and IIRC recreate the rrd, you will lose |
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> all past info (can't be helped). |
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> |
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> |
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> [snip ls output] |
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> |
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> |
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>> P.S. Any other good plugins you'd recommend? |
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> |
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> http://gallery.munin-monitoring.org/ |
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> |
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> Monitoring is highly site-specific so recommendations aren't usually |
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> worth much, but that gallery has LOTS of contributed plugins |
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Many thanks Alan! |
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|
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- Grant |
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