Hello, this is Bono.
When you are running several blogs and web services, you can't remember every IP address and ssh connection tends to be a hassle.
In such cases, the following method will make the connection much easier.
Prepare config file
Create a file named "config" in the following location.
Then, in the config file, describe the server information you want to set up the connection.
A number of settings are possible.
Host hoge1 HostName XX.XX.XXX.XXX Port AA User ZZZ IdentityFile ~/.ssh/YYYY Host hoge2 HostName XX.XXX.XX.XX Port AAA User ZZZZ IdentityFile ~/.ssh/YY Host hoge3 HostName XX.XXX.XXX.XX Port AAA User ZZ IdentityFile ~/.ssh/YYY