Authelia error 502 Bad Gateway
reddit / selfhosted

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Pitiful_Vermicelli42 · 2023-12-15 22:43

Hello, since a few days ago, maybe after an update I have this error
when accessing the IP where my Authelia instance is hosted, what steps
can I follow to troubleshoot? Thanks

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thekrautboy · 2023-12-15 22:47

You are overwhelming me with so many details of your setup and the
actual problems, i dont even know where to start, sorry... ^/s

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rbatersi · 2023-12-15 22:50

Check Docker logs or logs in Portainer.

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KD_done · 2023-12-16 00:00

A 502 error is often a "not much there, no response, what are you
expecting dude?" error.

So.. kick open a shell, and get the container id. of authelia
`docker ps`
Then lets check if the ip you are using is actually attached to
authelia;
`docker inspect `


And if that all makes sense, lets open up a log;
`docker logs `


Good luck trouble shooting!
(and yes.. you can also use the docker name, but if your are copy-
pasting.. both work equally fine).

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arcadianarcadian · 2023-12-16 09:45

Because you gave no information at all, we don't know what OS,
platform, or application you are using.

It's not an actual Authelia error but a reverse proxy. Because it says
openresty, it's a NGINX.

"502 Bad gateway" errors are mostly because your reverse proxy cannot
connect to backend services (in your case it's Authelia)

If you're using docker, connect to your nginx container and test to
connect to Authelia. There are many ways to do it.

docker exec -it  bash
nc -zv
curl -kv :
telnet

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Pitiful_Vermicelli42 · 2023-12-17 22:05

Hi!, is running on a LCX in Proxmox
Yes in using Nginx in a separate LXC and is running fine for the
services that are not using Authelia, let me check those commands ,
many thanks!

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Pitiful_Vermicelli42 · 2023-12-17 22:05

Thanks, let me further investigate