v5 rate limiting

Problem

CentOS 6 uses rsyslog 5.8.xxx which has rate limiting enabled. When too much comes in too fast, rsyslog says something like:

imuxsock begins to drop messages from pid $PID due to rate-limiting

Solution

Add to /etc/rsyslog.conf:

$SystemLogRateLimitInterval 0
$SystemLogRateLimitBurst 0

Note that this won't do anything to deal with losses that are udp-getting-dropped problems, but it raises the threshold of trouble somewhat higher than it otherwise would be.

(Source)