Multiple Github Account

May 10, 2021

Target

Setup multiple github accounts
Push to different account’s remote repo automatically

Setup

First, generate new ssh key for new github account.

$ ssh-keygen -t rsa -C "kyktommy@gmail.com" -f "id_rsa_kyktommy"
$ ssh-add ~/.ssh/id_rsa_kyktommy

Second, edit .ssh/config, there are 2 github account, which has different Host, they uses different rsa key for github.com.

# Account 1
Host github.com
   HostName github.com
   User git
   IdentityFile ~/.ssh/id_rsa
   
# Account 2
Host github.com-kyktommy
   HostName github.com
   User git
   IdentityFile ~/.ssh/id_rsa_kyktommy

Github operation

Remember clone github repo with self-defined Host instead of just github.com.

$ git clone git@github.com-kyktommy:kyktommy/<repo_name>.git

or, update remote url in existing project.

$ git remote set-url origin git@github.com-kyktommy:kyktommy/<repo_name>.git

Besides, you can update the gitconfig for git commit author.

$ git config user.name "kyktommy"
$ git config user.email "kyktommy@gmail.com"