Frequently Asked Questions (FAQ) ​
Server ​
Permission denied (publickey). ​
Error
Error: Server is not reachable. Reason: [email protected]: Permission denied (publickey).
Your Coolify instance cannot reach the server it is running on. During installation, a public key is generated to /data/coolify/ssh/keys/[email protected] and automatically added to ~/.ssh/authorized_keys.
If it is not added, you can add it manually by running the following command on your server:
cat /data/coolify/ssh/keys/[email protected] >> ~/.ssh/authorized_keysCustom SSH Port ​
If you would like to use a custom SSH port, you can set it in the Server tab of your server.
If you are self-hosting Coolify, you can simply set it after you installed Coolify on the localhost server.
Increase Concurrent Builds ​
If you would like to increase the number of concurrent builds, you can set it in the Server tab of your server.
Coolify Cloud Public IPs ​
If you need the public facing IPs to allow inbound connections to your servers, here is an up-to-date list of IPs that you can use to whitelist:
Cloudflare ​
Configured but application is not reachable. ​
You need to set your SSL/TLS configuration to at least Full in your Cloudflare dashboard.
Documentation: https://developers.cloudflare.com/ssl/origin-configuration/ssl-modes/full/
Too many redirections. ​
You need to set your SSL/TLS configuration to at least Full in your Cloudflare dashboard.
Documentation: https://developers.cloudflare.com/ssl/origin-configuration/ssl-modes/full/
Applications ​
How to map a port the server? ​
If you want to map a port the host system (server), you need to use Ports Mappings feature.