You have three options when it comes to using or adding an additional key.
- First option is to update your SSH local config file to include any additional keys with an updated
- Second, is to specify the identify file to use for that one connection.
ssh -i /path/to/private.key
- Third, you can hold this new key open with an agent by adding an identify to ssh-agent. This way when ssh attempts to connect, it will try all keys loading into your agent.