SSH login without password

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SSH Login without Password

To login in SSH without password, we need to do the following:

1. Generate a key pair (private key and public key) in Server A
  ssh-keygen -t rsa

2. Copy the public key from Server A to Server B.
  scp id_rsa.pub username:[server_B_ip_address]:/home/username/.ssh

3. In Server B, add that public key into authorized_keys file.
  cat id_rsa.pub >> authorized_keys

4. Verify it from Server A.
  ssh username@[server_B_ip_address]

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