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I was able to setup ssh to use private/public key authentication. Now I am able to do
ssh user@server1
And it logs on with the private key. Now I want to connect to another server and use a different key. How do set it up so
ssh user@server1
uses privatekey1
ssh user@server2
and uses privatekey2
You can set this up in your ~/.ssh/config file. You would have something like this:
Host server1
IdentityFile ~/.ssh/key_file1
Host server2
IdentityFile ~/.ssh/key_file2
man ssh_config is a reference
User for each host to cut down on key strokes. Lastly when you're generating a new SSH key for each host with ssh-keygen make sure you actually enter an alternate key path.
Aug 11, 2010 at 20:49
host x ->key1 and then the rest of the hosts key2
Jun 19, 2017 at 14:54
sh Host * And add the defaults, than overrides van be added underneath. Also: sh man_ssh_config Specifically the part in the "Host" section with regards to asterisk '*' & exclamation mark '!'
Mar 19, 2018 at 13:08
There are a few options.
Load both keys into your ssh agent using ssh-add. Then both keys will be available when connecting to both servers
Create your $HOME/.ssh/config file and create a Host section for server1 and another for server2. In each Host section, add an IdentityFile option pointing to the appropriate private key file
Besides the (preferable) option of adding both keys in $HOME/.ssh/config (note that this requires appropriately setting attributes of $HOME/.ssh and $HOME/.ssh/config), you can use
$ ssh -i privatekey1 user@server1
e.g.
I learned this by way of solving this more complex situation: Multiple ssh access types from a given user1/client to the same user2/server
