After upgrading from F41 to F42 the munin server does receive data from the nodes, but does not draw a graph. No error messages of any value in the logs. Name : munin-node Version : 2.0.76 Release : 5.fc42 Name : munin Version : 2.0.76 Release : 5.fc42 Munin was running for 15 years on the server, could be a "oldformat" issue. What can i test? ( Yes, i sure it gets data, i tcpdumped the collection ) Reproducible: Always
Which logs did you check? Only thing changed is SELinux policy, so check it's log. And nginx/apache. Maybe test by disabling SELinux?
SEL is disabled, and was disabled before.
We can close this. After the F42 upgrade, the crond -> munin cronjob failed, because crond did not startup. Maincause: crond But, maybe you can answere something else: it was necessary to add local_address to the munin config, because it was connecting via ipv6 instaed of ipv4 , like the last 15 years. Any idea if that is caused by munin itself, or a NetworkManager device priority issue?
Munin RPM package switched from cron to munin.timer in year 2020. Simply remove cronjob and run "systemctl enable --now munin.timer". My guess is that some other perl package upgrade switched to prefer-IPv6. Munin itself doesn't have any preference but it uses other perl packages for communication.