Munin::Plugin::Pgsql only supports a single postgres installation per host

[gilesw]

In order to pass in different ports .etc you need to have a unique config file. Adding a instance id to each plugin symlink allows you to support this. One line change in sub wildcard_parameter.

if ($0 =~ /$self->{basename}instance\d+_(.*)$/ or $0 =~ /$self->{basename}(.*)$/) {

e.g /etc/munin/plugins/postgres_cache_instance1_ALL

reads

/etc/munin/plugin-conf.d/postgres_cache_instance1_ALL

[gael]

I made a change postgres_cache_instance1_ALL -> postgres_instance1_cache_ALL
It provides possibility to configure several instances simply

  [postgres_instance1_*]
  ...

I added a draft of the patch.

If this operation is ok I implement on other plugins postgres_ *

[gael]

Fixed by ​https://github.com/munin-monitoring/munin/commit/e1fde80c6f34f2e3be573b5f9576ad4fba25f0ba

Allow you to have :

[postgres_instance1_*]
env.PGPORT 5432

And just add link like that :

/etc/munin/plugins/postgres_instance1_cache_ALL