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Multiple SSH keys

Use multiple SSH keys with GitHub

Based on article

1. Generate SSH keys

ssh-keygen -t ed25519 -C "andd3dfx@gmail.com"             # use default key name `id_ed25519`
ssh-keygen -t ed25519 -C "Andrei.Punko@another-group.com" # use key name `id_ed25519_another`

2. Create ~/.ssh/config with next content:

# Default GitHub account: andrei-punko
Host github.com
   HostName github.com
   IdentityFile ~/.ssh/id_ed25519
   IdentitiesOnly yes

# Another GitHub account: another
Host github-another
   HostName github.com
   IdentityFile ~/.ssh/id_ed25519_another
   IdentitiesOnly yes

3.Add SSH private keys to your agent

ssh-add ~/.ssh/id_ed25519
ssh-add ~/.ssh/id_ed25519_another

According to article to make ssh-add work you may need to run next command before that:

eval `ssh-agent -s`

4. Test connection

ssh -T git@github.com
ssh -T git@github-another

In case of success you will get messages:

Hi andrei-punko! You've successfully authenticated, but GitHub does not provide shell access.
Hi apunko-another! You've successfully authenticated, but GitHub does not provide shell access.

5. Clone your repo

But in clone link you need to use github-another instead of github.com:

  • Got from GitHub: git@github.com:another/sf-original.git
  • Right link to make clone: git@github-another:another/sf-original.git

6. Adjust default name & email

git config user.name "Andrei Punko"
git config user.email "Andrei.Punko@another-group.com"