DNS resolution happens only on startup

[alon-argus]

Hi again everyone.

I use a DNS service for my services (specifically Mesos-DNS, but it can be Consul or any other), therefore I use Prometheus' dns_sd_configs configuration option to give my services addresses

The problem is:
Prometheus resolves the SRV DNS addresses only on its startup ,so if Prometheus starts before the DNS server, it won't show all of these Targets. They won't even appear as "Down", but they'll just never appear until I'll restart Prometheus.

Version: 0.18.0

[matthiasr]

Can you try starting DNS first? We use DNS SD a lot and don't hit this. The only difference I see is DNS being unavailable at startup, so the bug might be triggered by that condition. What I would expect in that case is that subsequent updates properly reflected.

[alon-argus]

Thanks a lot for the quick reply.
It happens only when I start DNS after Prometheus.
Anyway, I'm trying to reproduce now with the latest version 0.19.1

[alon-argus]

OK, it seems like it doesn't reproduce with 0.19.1. I'm closing the issue and I'll report if it happens again. Thanks!

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.