ansible******************************** 1> Create user in Master Node & All Client Nodes useradd ansible passwd ansible vi /etc/ansible/hosts [gameserver] --------- -> ip of node visudo ansible ALL=(ALL:ALL) NOPASSWD:ALL vi /etc/ssh/sshd_config PermitRootLogin yes PasswordAuthentication yes service sshd restart ssh ------- ---> priv ip with passwd u logged node. ssh-keygen ----> generate key pair on master node and copy to client node for ssh hanshake. cd .ssh ssh-copyid ansible@------- --> priv ip of node (For all node do it) in Master node su - ansible ansible-playbook 1.yaml --check or ansible-playbook 1.yaml -u ansible -K