🐛 Bug Report: Health check fails on Docker

[4WaYDp]

Describe the bug

Health check fails on Docker

Steps to reproduce the bug

{
"Status": "starting",
"FailingStreak": 1,
"Log": [
{
"Start": "2024-05-20T14:01:44.00930286+02:00",
"End": "2024-05-20T14:01:44.063915771+02:00",
"ExitCode": 1,
"Output": "wget: can't connect to remote host: Connection refused\n"
}, [...]

Solution

The health check in the Dockerfile points wget to localhost which can not be resolved. Please add a /etc/hosts file (127.0.0.1 localhost).

Context

The image used was from quay.io

[4WaYDp]

Related to #73

[Pix3l01]

The hosts file is correct. The problem is caused by the server only listening on IPv4 by default. Since Docker now supports IPv6, IPv6 has precedence over v4 so localhost resolves to [::1] before resolving to 127.0.0.1 causing wget to error out.
In my opinion, the best way to fix this would be to start the server on both IPv4 and IPv6 by default, unless there are some problems (but there shouldn't be any).

As a quick fix, depending on your setup, you can either:

• run the container with the flag --sysctl=net.ipv6.conf.all.disable_ipv6=1 in your docker run command to disable IPv6 in the container complitely
• modify the healthcheck in the docker-compose.yaml file by replacing localhost with 127.0.0.1