Checkout from Gitlab with different SSH key than log into server

[Konafets]

I deploy from my local machine to a server using SSH Key A. On the server I created a SSH Key B which I uploaded at gitlab.com. I can clone a Repository with that key.

However, when I deploy the application it failed to checkout with

bash --login -c '/usr/local/bin/git clone "git@gitlab.com:username/app.git" "/var/www/virtual/username/app/releases/20170113165751" --branch="develop" --depth="1"'
[username@example.com] (staging) Cloning into '/var/www/virtual/username/app/releases/20170113165751'...
[username@example.com] (staging) Permission denied (publickey).
[username@example.com] (staging) fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
staging/0 |===> An error occured: "Unable to clone the repository", while running:
Cloning into '/var/www/virtual/username/app/releases/20170113165751'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

What should I do to make this working.

[dmaphy]

I'd personally suggest to write some lines of SSH configuration which decides which key to use

[Konafets]

Hi @dmaphy,

I think I don't understand. Where should this config go and how to decide which config should be used. Can you give a short example?

[dmaphy]

Hi,

basically you'd do something like this in you ~/.ssh/config:

Host gitlab.somewhere.com
       User git 
	IdentityFile ~/.ssh/my_gitlab_deploy.key

Host some_other_host.com
       User myusername
	Port 22
	IdentityFile ~/.ssh/another_ssh.key

See man ssh_config for more detailed information.