Installation fails silently

[2gn]

I'm trying to install coolify on an lxc container on proxmox. I ran the installation script as root, got the following output.

It's the second time running the script, so dependency installation or whatever are skipped.

root@coolify:~# curl -fsSL https://cdn.coollabs.io/coolify/install.sh | bash     
Welcome to Coolify Installer!
This script will install everything for you. Sit back and relax.
Source code: https://github.com/coollabsio/coolify/blob/v4.x/scripts/install.sh
Using registry URL from .env: ghcr.io
Found existing Docker network pool: 10.0.0.0/8/24
---------------------------------------------
| Operating System  | debian 12
| Docker            | 27.0
| Coolify           | 4.0.0-beta.444
| Helper            | 1.0.12
| Realtime          | 1.0.10
| Docker Pool       | 10.0.0.0/8 (size 24)
| Registry URL      | ghcr.io
---------------------------------------------

1. Installing required packages (curl, wget, git, jq, openssl). 
2. Check OpenSSH server configuration. 
 - OpenSSH server is installed.
 - SSH PermitRootLogin is enabled.
3. Check Docker Installation. 
 - Docker is installed.
4. Check Docker Configuration. 
 - Network pool configuration: 10.0.0.0/8/24
 - To override existing configuration: DOCKER_POOL_FORCE_OVERRIDE=true
 - Log configuration is up to date
 - Configuration is up to date
5. Download required files from CDN. 
6. Setting up environment variable file
 - Creating backup of existing .env file to .env-20251121-151438
 - Merging .env.production values into .env
 - .env file merged successfully
7. Checking and updating environment variables if necessary...
8. Checking for SSH key for localhost access.
 - Generating SSH key.
9. Installing Coolify (4.0.0-beta.444)
 - It could take a while based on your server's performance, network speed, stars, etc.
 - Please wait.
 - Until then, here's a joke for you:

Knock knock.
Who's there?
Recursion.
Recursion who?
Knock knock.

root@coolify:~# 

Normally, it should end with congratulation or something, however, it just stops silently after cracking a joke.

I've already tried recreating the lxc container and running the coolify installation several times before, got the same result each tries.

For additional contexts, here are some docker commands and outputs:

root@coolify:~# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
root@coolify:~# docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

root@coolify:~# docker container ls
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
root@coolify:~# docker container ls -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
root@coolify:~# docker image ls
REPOSITORY                          TAG       IMAGE ID       CREATED      SIZE
ghcr.io/coollabsio/coolify-helper   1.0.12    5b047e2f85b4   8 days ago   298MB

can somebody please help me...

[djsisson]

can you run docker login it looks like it failed when pulling images from docker hub, this can happen if you are on ipv6, and share a /64 subnet with others, or you were logged in to docker hub and the token expired, in which case, run docker logout

[2gn]

Thanks for the reply, I created a docker account and ran docker login, but it didn't work.

[djsisson]

can you check data/coolify/source/upgradexxxx.log

[2gn]

root@coolify:/data/coolify/source# cat upgrade-2025-11-21-15-14-45.log 
Merging .env.production values into .env
.env file merged successfully
Checking and updating environment variables if necessary...
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: open sysctl net.ipv4.ip_unprivileged_port_start file: reopen fd 8: permission denied: unknown.

[2gn]

Okay, I've added the following to /etc/pve/lxc/<proxmox-container-id>.conf and it started working...it was a proxmox's AppArmor problem.

However, disabling apparmor of a container doesn't look very nice. There must be a better solution for this.

Anyways, thank you so much for helping me debug the problem.

lxc.apparmor.profile: unconfined
lxc.cgroup.devices.allow: a
lxc.cap.drop:

[Cinzya]

We recently added a troubleshooting guide for the Coolify install script to the Docs. Give this a read and report if that helped you fixing it.
https://coolify.io/docs/troubleshoot/installation/install-script-failed

[2gn]

Thank you for the reply. It was a proxmox problem. Gemini says that AppArmor blocked the container from writing to a network setting in /proc/sys/.
The solution was not in the troubleshooting guide, but I guess it shouldn't be on it because it looks pretty dangerous.