Rsyslog: discarding specific messages, rate limiting
Solution 1:
may be offtopic, but
When I disabled the rate limiting ($SystemLogRateLimitInterval 0) the messages are no longer logged so I'm not quite sure what's going on there.
need more parameters to disable rsyslog limit https://access.redhat.com/solutions/156863
$SystemLogRateLimitInterval 0
$SystemLogRateLimitBurst 0
$IMUXSockRateLimitBurst 0
$IMUXSockRateLimitInterval 0
$IMUXSockRateLimitSeverity 7