SSH login without recheck all public key

Question

I have several servers and different users. Also i have two different authorize method: via keys and password.

When i try login ssh recheck all public keys. Is there method to bind public key and server?

Here is verbose :

ssh -v root@serv

debug1: Offering RSA public key: /home/user/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: user1@web3
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: user2@web2
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: root@web1
debug1: Authentications that can continue: publickey,password
debug1: Offering RSA public key: user3@web3

Answer 1

You can use a ~/.ssh/config file and put per host configuration details in it

Host serv1
    hostname serv1.example.com
    user serv1user
    IdentityFile ~/.ssh/serv1user.key

Host serv2
    hostname serv2.example.com
    user root
    IdentityFile ~/.ssh/rootserv2.key

Host serv3
    user root
    IdentityFile ~/.ssh/rootserv3.key

Now you can ssh serv1 etc and the relevant details will be picked up from the configutation file.