Increase syslog and Tracking Center retention from 7 days to 31 days

nano /etc/logrotate.d/rsyslog

/var/log/syslog
 {
         rotate 31
         daily
         missingok
         notifempty
         delaycompress
         compress
         postrotate
                 /usr/lib/rsyslog/rsyslog-rotate
         endscript
 }

systemctl restart rsyslog.service

In case of a cluster, you have to do this on each node. Log is not synced over nodes. To have complete Tracking Center on master and slave only for backup, set master node to lower mx value.

Remove subscription message … following Johns blog