Alertmanager status component=silences msg="Running maintenance failed" permission denied

[Annonyme1]

I was working with alertmanger and it was sending alert after a while i got that error : 

alertmanager[15768]: level=info ts=2020-09-11T15:14:54.414Z caller=silence.go:379 component=silences msg="Running maintenance failed" err="open data/silences.16bdb0fb9c4ccc4e: permission denied"

Some help please !!

[Brian Candler]

I'm stating the obvious here, but it looks like a permissions problem on that directory or file.

At minimum you should:

1. identify what uid alertmanager is running as, and what working directory it's running in

2. check permissions on the "data" subdirectory, and all files in that directory

[Annonyme1]

I did it with chmod 777 but after restarting 777 i the autorisations gaven earlier and i got the same message  :"" component=silences msg="Running maintenance failed" err="open data/silen...sion denied""""

[Brian Candler]

Permissions errors can also come from SELinux or Apparmor.  Check for errors in the system logs.  If it's a CentOS/RedHat system, try setting SELinux to permissive mode.

[Annonyme1]

now i got that error """component=dispatcher msg="Notify for alerts failed" num_alerts=1 err="dial tcp grafana.s.com: connect: no route to host; dial tcp grafana.s.com:25: connect: no route to host""""

[Brian Candler]

That's a very clear error message.  Alertmanager is trying to make a connection to grafana.s.com port 25 (SMTP for sending mail), and it can't.  Possibly the connection is being blocked by firewall rules.

You can test it by hand:

telnet grafana.s.com 25

and then fix your network until it works.