Ansible tasks

Docker Usage:

For installing Docker in local system:

• Set hosts to localhost in docker.yml

- hosts: localhost
  become: yes
  roles:
         - docker_ubuntu

• Add system Public IPv4 in inventory

For installing Docker in any other server:

• Set hosts to all in docker.yml

- hosts: all
  become: yes
  roles:
         - docker_ubuntu

• Add server Public IPv4 in inventory file

• Set the private key file path of server for SSH in ansible.cfg

[defaults]

private_key_file = /etc/ansible/ubuntu.pem

• Run the playbook with the following command

ansible-playbook docker.yml

Kubernetes Usage:

For installing Kubernetes in both Master & Slave system:

• Set path to private key file in ansible.cfg

[defaults]

private_key_file = /etc/ansible/private_key_file.pem

• Set permission of your private key file to Owner can read

chmod 400 /etc/ansible/private_key_file.pem

• Add Master & Slave server Public IPv4 in inventory file

[kube_master]
54.82.75.140

[kube_slave]
52.87.175.205

Run the playbook with the following command:

ansible-playbook multiNode.yml

• Copy & Paste the token to join the kubernetes cluster when prompted

TASK [k8s_master : Print the command to join the slave nodes] ******************
ok: [34.236.156.40] => {
    "join_command.stdout_lines": [
        "kubeadm join 172.31.17.144:6443 --token zooq9g.5wzl47wd0yirjesr --discovery-token-ca-cert-hash sha256:1edef2be737c1747fdf1678ad48584ced3ab233de9b972db991288ff51d16ff1 "
    ]
}
Enter the token to join the kubernetes cluster: