How to add private key to SSH Agent permanently?

Question

SSH

Each time before connecting to a remote server, I have to execute the command ssh-add ~/.ssh/keyto forward the key to this connection and have access to an external remote resource (in relation to the remote machine). How to make it permanent so as not to repeat this action every time?

Answer 1

The problem was solved by moving the keys to the root ~/.ssh from the subfolder.
After a reboot, they themselves are added to the agent.

Answer 2

If I'm not mistaken, then the key must be written in ~/.ssh/config in the form

Host remote.com
   IdentityFile ~/.ssh/remote.com.key

where remote.com is the first server you connect to

Answer 3

Register adding a key to the agent in autoload.

Answer 4

You can add the key to the keychain ("Passwords and Keys" application in English seahorse ) and the key will be added to the agent at the time of logging into the system, there will be no need to enter the password separately from the key.