GNU bug report logs - #36389
nginx/certbot interaction doesn't work as documented

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Message #17 received at 36389 <at> debbugs.gnu.org (full text, mbox):

From: Andreas Enge <andreas <at> enge.fr>
To: 36389 <at> debbugs.gnu.org
Subject: Nginx and certbot
Date: Mon, 20 Dec 2021 17:17:53 +0100

Hello,

I am also experiencing problems with setting up nginx and certbot, but I
think it is more nginx that is to blame. After reconfiguring and restarting
nginx, it is still running with the old configuration. Only rebooting solves
the problem for me.

Here is what it looks like (everything as root):
$ ps -ef | grep nginx
root      2821     1  0 17:03 ?        00:00:00 nginx: master process /gnu/store/bdhfqs7sx3mal6pzz8z00hw4cpn5dj7x-nginx-1.21.4/sbin/nginx -c /gnu/store/q7bwm828r8y88sfs395n04bi8s6b7zwl-nginx.conf -p /var/run/nginx

$ guix system reconfigure ...
nginx: configuration file /gnu/store/clq2yshkq3gxpcqa6d54m8qif8i37kl9-nginx.conf test is successful

$ herd restart nginx; ps -ef | grep nginx
root      2835     1  0 17:12 ?        00:00:00 nginx: master process /gnu/store/bdhfqs7sx3mal6pzz8z00hw4cpn5dj7x-nginx-1.21.4/sbin/nginx -c /gnu/store/q7bwm828r8y88sfs395n04bi8s6b7zwl-nginx.conf -p /var/run/nginx

Notice that it is still running the old, q7b... config file!

$ reboot
$ ps -ef | grep nginx
root       188     1  0 17:13 ?        00:00:00 nginx: master process /gnu/store/bdhfqs7sx3mal6pzz8z00hw4cpn5dj7x-nginx-1.21.4/sbin/nginx -c /gnu/store/clq2yshkq3gxpcqa6d54m8qif8i37kl9-nginx.conf -p /var/run/nginx

Now the new, clq... config file is used!

So somehow nginx appears to memorise its previous configuration file even
when the service is stopped.

The problem can be solved by rebooting after each web server reconfiguration,
but this is of course not very comfortable.

Andreas

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