From the logs:
Setting up nginx-core (1.18.0-6ubuntu14.7) ...
cat: /etc/nginx/nginx.conf: No such file or directory
* Upgrading binary nginx [128G
(...)
Dec 14 08:46:02 v2202108153683159642 systemd[1]: Starting A high performance
web server and a reverse proxy server...
Dec 14 08:46:02 v2202108153683159642 nginx[117290]: nginx: [emerg] open()
"/etc/nginx/nginx.conf" failed (2: No such file or directory)
Dec 14 08:46:02 v2202108153683159642 nginx[117290]: nginx: configuration file
/etc/nginx/nginx.conf test failed
So looks like you have a missing configuration file (/etc/nginx/nginx.conf).
This cannot be explained with just the provided log files.
I do see this, however:
[0;1;31m×[0m nginx.service - A high performance web server and a reverse
proxy server
Loaded: loaded
(]8;;file://v2202108153683159642/lib/systemd/system/nginx.service/lib/systemd/system/nginx.service]8;;;
enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/nginx.service.d
└─]8;;file://v2202108153683159642/etc/systemd/system/nginx.service.d/cloudron.confcloudron.conf]8;;
Active: [0;1;31mfailed[0m (Result: exit-code) since Sun 2025-12-14
08:46:02 UTC; 127ms ago
Docs: ]8;;man:nginx(8)man:nginx(8)]8;;
Process: 117290 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on;
master_process on; [0;1;31m(code=exited, status=1/FAILURE)[0m
What caught my eye was this path, however:
file://v2202108153683159642/etc/systemd/system/nginx.service.d/cloudron.conf
That root directory (/v2202108153683159642/) indicates this is something
else and not a plain ubuntu system. Is this a chroot? Container?
Snapshot? It looks like whatever provisioned this system for you, and
created this systemd override file for nginx, did not expect you to
release-upgrade it to a newer release of ubuntu, or maybe there is just
a bug in this provisioning system that missed the nginx.conf config
file.
I'll mark this bug as incomplete for now, pending an explanation about
the above.
** Changed in: nginx (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2136014
Title:
package nginx-core 1.18.0-6ubuntu14.7 failed to install/upgrade:
installednginx-core package post-installation script subprocess
returned error exit status 1
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