what permission does rsyslogd need to create a socket?

@handat

I'm setting up HAProxy and want to log to rsyslog.  rsyslogd is giving me the following error:

Mar 13 13:35:41 OL-haproxy rsyslogd: cannot create '/var/lib/haproxy/dev/log': Permission denied

What/where do I need to set permissions to allow rsyslogd to create the socket file?

Thanks for any clues,

GlenG

[Edit] I did not get logging using the socket but using UDP is working thanks to @handat