Multi Github SSH Keys on Same Host

Sometimes we use the same linux host to access several different repositories from several different Github account, we will meet the confusion on the SSH Keys configuration.

User Scenario

Config File

/root/.ssh/config

By default, git will use file id_rsa as ssh key. Firstly, you need to create a key, here name is bs_rsa. Then create a file at /username/.ssh folder, the config file content is like this:

Host github1
HostName github.com
User git
IdentityFile /root/.ssh/id_rsa

Host github2
HostName github.com
User git
IdentityFile /root/.ssh/bs_rsa

/repository-name/.git/config

Then edit the git configuration file, replace git@github.com in url with the string you added in /root/.ssh/config, with github1 or github2 depends on your need, just like this:

[remote "origin"]
        url = github1:github-account-name/repository-name.git
        fetch = +refs/heads/*:refs/remotes/origin/*

name && email

If repository need different commit user info, just cmd like this:

git config --list
git config user.name "name"
git config user.email "name@email.com"

Thanks!