How to stop writing local6 or other custom facility logs into `/var/log/messages`.

Issue

• httpd logs are printing in /var/log/messages instead of /var/log/myhttpd.log while using local6 facility in httpd configuration.

• Logs are being written to /var/log/messages instead of /var/log/audit/audit.log when audit plugin is configured with LOG_LOCAL6.

• High volume of log entries in the /var/log/messages filling up /var and the file system is getting 100% occupied due to this issue.