[Bug]: Services flapping

[AlexTryHarder]

Environment

Services flapping

Bug Description

Reporting seems not to work correctly for some reason, service reports up, and then on next check down as timeout.

Wanted to migrate from uptime kuma, same docker host, so network is not an issue.

Container logs are lacking of any useful information that can help with diagnostics.

(And not it's not related to CF global outage that takes place right now, those are internal services)

Steps to Reproduce

As above

Expected Behavior

To see services reporting up and with correct ms delay.

Screenshots or Videos

No response

Logs

2025/11/18 14:50:08 🚀 Starting on port 8091
2025/11/18 14:50:08 ✓Backend integration enabled at http://localhost:8090 
2025/11/18 14:50:08 ✓Service monitoring enabled with regional agent support
2025/11/18 14:50:08 ✓SSL notification monitoring enabled with Telegram support
2025/11/18 14:50:08 ✓Server monitoring enabled with notification support
2025/11/18 14:50:08 ✓Uptime monitoring enabled with notification support
2025/11/18 14:50:08 ✓Supported operations: ping, dns, tcp, http, ssl
2025/11/18 14:50:08 ✓Default Regional monitor started for region: Default (Agent ID: 1)
2025/11/18 14:50:08 Starting monitor for service: Portainer (http)

Checklist

• I have searched existing issues to avoid creating duplicates.
• I have provided sufficient information to reproduce the issue.

[matthieubarthollet]

Pretty sure this is linked to this issue.
#191
The regional agent returns ok but the "master" checkcle returns down.
I have the same issue atm

[AlexTryHarder]

Pretty sure this is linked to this issue. #191 The regional agent returns ok but the "master" checkcle returns down. I have the same issue atm

Although this issue seems similar, I don’t think it’s exactly the same. In my case, the master should be able to reach every service easily, as Uptima Kuma was doing, and it also does not explain the flapping.