2.ssh key Login (SSH login without password)

1. A host generates a key pairssh-keygen-t RSA2. The public key of host A is sent to Host BSCP id_rsa.pub Linux2:/cloud                                //SCP: is a command of the SSH protocol, remote replication3. Add a host's public key to the authorization list of Host B(1) General B host has just started and did not have this file, first and a as first created. SSH directoryssh-keygen-t RSA
(2) Add the Authorized_keys file to the. SSH directory, which holds the values of all public keysTouch Authorized_keys                                    //touch command to create a file, mkdir create a directory
(3) inAuthorized_keys Adding the value of the public keycat/cloud/id_rsa.pub >> Authorized_keys//Note >> add,> means replace
(4) changes requiredPermissions for Authorized_keyschmod Authorized_keys



From for notes (Wiz)

2.ssh key Login (SSH login without password)