Postgres monitoring with munin 1.4 and multiple databases
In munin 1.4 the number of plugins for postgres has increased. They are all based on the same perl module - Munin::Plugin::Pgsql
Many of them allow for suffixing the database name to the symlink in /etc/munin/plugins/ to run against a given db or to suffix ALL to run against all (this is standard munin behaviour - see the plugins that have a filename ending in _).
If you enable several databases on the same plugin - it does a lot of stuff to be specific but it wasn't changing the plugin title so all the graphs generated got the same title. Hard to know which db is which.
I found that if I insert this line
$pg->{title} = $pg->{title} . " " . $pg->wildcard_parameter();
just before the call to
$pg->Process();
then I get unique titles.
Not sure if this is handled in later versions (I am running this via the lenny-backports apt repo).