Setup SSH keys for multiple github accounts and repos

multi_ssh_git_settings.md

Setup SSH keys for multiple github accounts and repos

Prepare SSH keys:

See guideline to create a new SSH key

  $ ssh-keygen -t rsa -C "[email protected]"

Choose/rename the keys, for example like these

  ~/.ssh/id_rsa_xxx
  ~/.ssh/id_rsa_yyy

Clear cached SSH keys first

  $ ssh-add -D

Add new keys

  $ ssh-add ~/.ssh/id_rsa_xxx
  $ ssh-add ~/.ssh/id_rsa_yyy

Recheck the keys list

  $ ssh-add -l

Add SSH config

  $ cd ~/.ssh/
  $ touch config
  $ vi config

Then added

  # Identity for xxx repos here
  Host github-xxx
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_xxx
    IdentitiesOnly yes

  # Identity for yyy repos here
  Host github-yyy
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_yyy
    IdentitiesOnly yes

Update git config

Clone your repo by alternative url

  $ git clone git@github-xxx:xxx/xxx.git xxx
  $ git clone git@github-xxx:yyy/yyy.git yyy

Or modify config for existing working directory

  $ cd xxx
  $ git remote set-url origin git@github-xxx:xxx/xxx.git

  $ cd yyy
  $ git remote set-url origin git@github-yyy:yyy/yyy.git

Update user name and email to for commit/push

  $ cd xxx
  $ git config user.name "xxx"
  $ git config user.email "[email protected]" 
  
  $ cd yyy
  $ git config user.name "yyy"
  $ git config user.email "[email protected]"