Python module for ganglia 3.1+

This module allows you to collect per network interface network stats. Out of the box Ganglia provides only aggregate network metrics. This module will give you rx (receive) and tx (transmit) stats for every interface it encounters e.g.

value for rx_bytes_lo is 21847.3723 value for rx_pkts_lo is 17.5771 value for rx_errs_lo is 0.0000 value for rx_drops_lo is 0.0000 value for tx_bytes_lo is 21847.3723 value for tx_pkts_lo is 17.5771 value for tx_errs_lo is 0.0000 value for tx_drops_lo is 0.0000 value for rx_bytes_eth0 is 0.0000 value for rx_pkts_eth0 is 0.0000 value for rx_errs_eth0 is 0.0000 value for rx_drops_eth0 is 0.0000 value for tx_bytes_eth0 is 0.0000 value for tx_pkts_eth0 is 0.0000 value for tx_errs_eth0 is 0.0000 value for tx_drops_eth0 is 0.0000 value for rx_bytes_eth1 is 0.0000 value for rx_pkts_eth1 is 0.0000 value for rx_errs_eth1 is 0.0000 value for rx_drops_eth1 is 0.0000 value for tx_bytes_eth1 is 0.0000 value for tx_pkts_eth1 is 0.0000 value for tx_errs_eth1 is 0.0000 value for tx_drops_eth1 is 0.0000

You can run the multi_interface.py script by hand to see all of the metrics.

In addition this script can be used to override "default" bytes_in, bytes_out, pkts_in and pkts_out metrics. To do that you will need to

• set send_aggregate_bytes_packets to True in multi_interface.pyconf
• Uncomment bytes_in, bytes_out metrics to be sent in in multi_interface.pyconf
• Comment out those same metrics you uncommented in step above in gmond.conf so they don't override each other

Copy multi_interface.py from python_modules to your python modules directory e.g.

/usr/lib64/ganglia/python_modules

and multi_interface.pyconf to

/etc/ganglia/conf.d/

Restart Gmond and you are done. If you want only specific interfaces add a space delimited list of interfaces in multi_interface.pyconf e.g.

param interfaces {
  value = "eth0 eth2"
}

Author: Vladimir Vuksan https://github.com/vvuksan