[collectd] collectd[3112]: write_graphite plugin: Connecting to localhost:2003 via tcp failed

[Leo Liu]

Hi there,

I am running collectd on centos 7. collectd and collectd-rrdtool are
installed from the EPEL repo. I keep getting this error:

        Oct 19 12:02:12 boss collectd[3112]: write_graphite plugin: Connecting to localhost:2003 via tcp failed. The last error was: Permission denied

Here is the conf I added to /etc/collectd.d/server.conf and no other
changes are made:

  LoadPlugin "network"
  LoadPlugin "write_graphite"
  
  # server
  <Plugin "network">
    Listen "192.168.122.40"
  </Plugin>
  
  <Plugin write_graphite>
   <Node "example">
     Host "localhost"
     Port "2003"
     Protocol "tcp"
     LogSendErrors true
     Prefix "collectd"
     Postfix "collectd"
     StoreRates true
     AlwaysAppendDS false
     EscapeCharacter "_"
   </Node>
  </Plugin>

Both collectd and carbon-cache are run on the same machine (KVM).

I can verify carbon-cache is listening on port 2003/tcp and it is
working. I tested its working by using the example-client.py from carbon
git repo from another machine as evidenced by the carbon's listener.log:

        19/10/2014 10:59:59 :: MetricLineReceiver connection with 127.0.0.1:57222 established
        19/10/2014 11:00:00 :: MetricLineReceiver connection with 127.0.0.1:57222 closed cleanly

Could someone help me resolve this issue? Thanks.

Leo