[Question] Can I have 2 different writer plugins in Collectd with different set of values being written?

[Ashish Kalbhor]

Hi,

I want to route 2 sets of metrics from multiple reader plugins into 2 different writer plugins: write_influx and write_http.

Is it possible to do so in collectd? If yes, how does the configuration change?

Thanks!

[mssm]

This should be possible a post cache chain configuration. Pasting the example from:

https://collectd.org/wiki/index.php/Plugin:Write_HTTP

Chains Example

A common requirement is the ability to direct selected metrics toward the 'write_http' plugin, while continuing to process other metrics via another write plugin:

Synopsis

LoadPlugin write_http
<Plugin "write_http">
  <Node "example_node">
    URL "http://example.com/post-collectd"
  </Node>
</Plugin>
PostCacheChain "PostCache"
<Chain "PostCache">
  <Rule "snmp">
    <Match "regex">
      Plugin "^snmp$"
    </Match>
    <Target "write">
      Plugin "write_http/example_node"
    </Target>
    Target "stop"
  </Rule>
  # Default target
  <Target "write">
    Plugin "rrdtool"
  </Target>
</Chain>

HTH.