Password free login of distributed nodes

First step ：master node

# Generate a key at the terminal 
ssh-keygen -t rsa

cd .ssh/ 
ls

# Copy the public key file to authorized_keys file 
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

ls -l

#authorized_keys File permissions 
[[email protected] .ssh]$ chmod 600 ~/.ssh/authorized_keys

# Add the private key to  ssh-agent  In the cache of 

[[email protected] .ssh]$ ssh-add id_dsa

#  take authorized_keys File copy to slave01、slave02 node zkpk The root directory of the user 
[[email protected] .ssh]$ scp ~/.ssh/authorized_keys [email protected]:~/ 
[[email protected] .ssh]$ scp ~/.ssh/authorized_keys [email protected]:~/

The second step ：slave01 node

 First from root The user returns to the normal user zkpk
# Generate a key at the terminal 
[[email protected] ~]$ ssh-keygen -t rsa
# take authorized_keys File move to .ssh Catalog 
shell [[email protected] ~]$ mv authorized_keys ~/.ssh/

The third step ：slave02 node

 First from root The user returns to the normal user zkpk
# Generate a key at the terminal 
[[email protected] ~]$ ssh-keygen -t rsa
# take authorized_keys File move to .ssh Catalog 
shell [[email protected] ~]$ mv authorized_keys ~/.ssh/