[Bug]: Getting false 'Your server is unreachable' notifications via Slack

[jjuannn]

Error Message and Logs

I'm frequently receiving some alerts saying that some of my servers are unreachable, even if they're completely reachables.

During these times:

• No changes were made in the Coolify instance.
• No downtime was experimented in my VMs.
• None of my applications deployed on Coolify stopped working.

No downtime registered on my VMs

I received the alert on Feb 23 at 08:44:19. I checked the logs and I have no errors or attemps made at 08:44:XX. These are the logs closest to that time. The yellow ones are the connections made from the Coolify server and seems like it was able to connect correctly.

The SendMessageToSlackJob is being triggered after the ServerCheckJob (these are the logs of the moment where another notification was triggered)

This error was also reported here #4407 and apparently fixed on the v380 release https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.380 but I had the problem on the release v380 and I'm still having the same problem on newer versions.

I have around 15 servers added to my Coolify instance

Steps to Reproduce

1. Have my servers running and reachables.
2. Configure Slack Webhook alerts on the Notifications section

3. Wait until it happens

Example Repository URL

No response

Coolify Version

v4.0.0-beta.397

Are you using Coolify Cloud?

No (self-hosted)

Operating System and Version (self-hosted)

Ubuntu 24.04.1 LTS

Additional Information

No response