20170117 Old Boys Linux combat operations Training-ssh key password-free authentication distribution, management, backup actual combat 01

This section says the SSH

SSH manufacturing private and public keys

The private key is the key

The public key is a lock

Distribute the public key to each Linux server you want to log on to

#ssh-keygen-t DSA

Using this command will generate a pair of keys in this machine

Private key ID_DSA

Public Key Id_dsa.pub

Put the public key on the server you want to log on to

With the command

#ssh-copy-id-i id_dsa.pub [email protected]

Put the public key on the server and start verifying it.

Command

#ssh [email protected]

In fact, you can also use other commands to log in as

#scp-p22-r/tmp/oldboy [email protected]

There is also a rsync which is a command also a service

There are also two tools Cfengine/puppet

Central distribution server is important because there are keys on it that can open all the servers

20170117 Old Boys Linux combat operations Training-ssh key password-free authentication distribution, management, backup actual combat 01