Regular short getaddrinfo EAI_AGAIN outages

[thoresson]

I've used Uptime Kuna without any problem since April. But for the last 24+ hours I suddenly have started to receive tons of these:

The affected hosts are on .se, and one .social. Some of them are hosted at the same box I run Cloudron on, some on others.

I see that it's not the same error message as in the OP, but similar enough to be related?

According to my logs, my Cloudron was updated to 8.0.4 on August 28, and 8.0.6 yesterday morning. I don't know for sure, but from the graphs it looks like the problem started as soon as that update had been installed. This is what the week graph looks like for or the monitored services with problems:

[joseph]

@thoresson usually, ENOTFOUND is a problem with the DNS. Is the DNS working on the server? You can try host www.cloudron.io from the host (via ssh) and also viw the Web Terminal of the Uptime Kuma app. Do they work?

[thoresson]

@joseph Yes, this is what I get using the web terminal.

But could it be that the DNS is going down intermittently?

[joseph]

@thoresson which version of Cloudron are you on? Can you upgrade to Cloudron 8.0.6 ? Starting 8.0.6, all app containers also use the system DNS. You can find out your DNS servers using resolvectl on the server.

[thoresson]

I'm on 8.0.6 since Tuesday morning, which incidentally also is when those problem started.

Should I use resolvectl from Uptime Kuma's web terminal?

[joseph]

@thoresson you should use it via SSH

[thoresson]

Netcup's DNS servers are configured for my Cloudron instance.