I recently setup an OMV 5 file server. I enabled email notifications, and in every boot I received 6 emails: 4 related to rrdcached and 2 related to collectd. The emails I receive are the following (in order of time received, although they are all received at almost the same time, so the order is not necessarily representative):
=== 1 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:23:24
Service: rrdcached
Event: Exists
Description: process is running with pid 741
This triggered the monitoring system to: alert
=== 2 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:22:25
Service: rrdcached
Event: Execution failed
Description: failed to start (exit status -1) -- Program '/bin/systemctl start rrdcached' timed out after 30 s
This triggered the monitoring system to: alert
=== 3 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:22:25
Service: collectd
Event: Does not exist
Description: process is not running
This triggered the monitoring system to: restart
=== 4 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:21:55
Service: rrdcached
Event: Does not exist
Description: process is not running
This triggered the monitoring system to: restart
=== 5 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:23:25
Service: collectd
Event: Exists
Description: process is running with pid 753
This triggered the monitoring system to: alert
=== 6 ===
The system monitoring needs your attention.
Host: \openmediavault
Date: Fri, 10 Dec 2021 07:23:25
Service: rrdcached
Event: Execution succeeded
Description: process is running after previous exec error (slow starting or manually recovered?)
This triggered the monitoring system to: alert
Alles anzeigen
Regarding the rrdcached messages, I read here that it is not something to worry about. After reading this tread (rrdcached service, running/not running, does not exist?), I made the changes indicated there (about OMV_MONIT_DELAY_SECONDS variable), and I will see again tomorrow morning if I get the related messages again. Although I do not understand why I get the same 2 messages twice about rrdcached.
What about the 2 collectd messages? Why are there at the first place? Is it something to worry about and how could I get rid of them?