Haproxy not reloading config in docker

[SamMousa]

I'm running haproxy inside docker using Nomad as an orchestrator.

Nomad renders templates, one of them is the config haproxy.cfg.

When cluster state changes this config file is updated and a signal is sent to haproxy. The logs show it is reloading:

[NOTICE]   (1) : Reloading HAProxy
[NOTICE]   (1) : haproxy version is 2.8.3-86e043a
[ALERT]    (1) : socketpair: Cannot transfer the fd 10 over sockpair@4. Giving up.
[ALERT]    (1) : Failed to get the sockets from the old process!
[NOTICE]   (1) : New worker (188) forked
[NOTICE]   (1) : Loading success.
[NOTICE]   (1) : haproxy version is 2.8.3-86e043a
[WARNING]  (1) : Former worker (166) exited with code 137 (Killed)

However the new configuration is not applied. I found an issue from 2016 related to inodes, but I don't think that is the problem.

Getting a shell into the container I can confirm:

• The inode of the config file changes
• The contents if the file is updated (checked from within the container)

Could it be that haproxy has a reference / file descriptor open to the old inode and therefore is not picking up the changes?

[SamMousa]

Hmm, never mind, seems was mounting the config file twice one time via the inode. Apologies for the spam!