elasticsearch PMDA question

[Alec Ten Harmsel <alec@xxxxxxxxxxxxxxxxxx>]

Hi,

We're using the elasticsearch PMDA to grab metrics on a small cluster.
By default, the PMDA grabs metrics for every node, even when PCP is only
running on one node. This is very slow; the PMDA has an internal timeout
of 1 second, but a request to get metrics from all nodes usually takes
2-3 seconds on our cluster.

My question is: is it default for PMDAs to grab metrics for as many
nodes as possible, or only on the node that PCP is running on? There is
an easy way to patch the PMDA to fix our problem, but it would break the
behavior the PMDA has historically had. What is the best way to go about
fixing this?

Thanks,

Alec