Haproxy socket stats

Enable stats

Reporting is provided if you enable stats into its config.

The setting is described at https://cbonte.github.io/haproxy-dconv/1.8/configuration.html#4.2-stats%20enable

In this post I describe how to use the socket type.

Enable the stats socket

I enable it into the global section as so

global

  stats socket /var/lib/haproxy/stats group haproxy mode 664

What this does is:

• enable the stats socket under /var/lib/haproxy/stats
• the group owner is haproxy (running haproxy as user haproxy)
• permissions are rw (user), rw(group), r(others)

Note there is an option admin that will allow to control haproxy but I don’t use it.

Reading stats from socket (netcat)

You need to have installed netcat (nc).

$ echo 'show stat' | nc -U /var/lib/haproxy/stats
# pxname,svname,qcur,qmax,scur,smax,slim,
....
http_frontend,
....

Reading stats from socket (socat)

You need to install socat since is not frequently installed.

To use it

$ echo 'show stat' | socat stdio /var/lib/haproxy/stats
# pxname,svname,qcur,qmax,scur,smax,slim,
....
http_frontend,
....