---
- hosts: localhost

  vars_files:
    - vars.yml
  

  tasks:
    - block:
        
        - name: Getting master ip
          shell: cat ip.csv | awk 'NR == 1'
          register: master_ip

        - name: Generating master SSH key
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ssh-keygen -t rsa -N \"\" -f ~/.ssh/id_rsa -y'
          register: master_key

        - name: Getting compute-nodes ip
          shell: cat ip.csv | grep -v {{ master_ip.stdout }}
          register: compute_ip
          
        - name: Generating compute-node SSH key
          shell: ssh -o StrictHostKeyChecking=no root@{{item}} 'ssh-keygen -t rsa -N \"\" -f ~/.ssh/id_rsa -y'
          with_items: "{{ compute_ip.stdout_lines }}"  

        - name: Copying ssh-key into master
          shell: | 
            ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'echo {{ master_key.stdout }} >> ~/.ssh/authorized_keys'  
            eval 'ssh-agent'

        - name: Copying the SSH key into compute nodes
          shell: |
            ssh -o StrictHostKeyChecking=no root@{{item}} 'echo {{ master_key.stdout }} >> ~/.ssh/authorized_keys'
            eval 'ssh-agent' 
          with_items: "{{ compute_ip.stdout_lines }}"
 
        - name: SSH from master to each Nodes 
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ssh -o StrictHostKeyChecking=no root@{{item}} ls'
          with_lines: cat ./ip.csv

        - name: Generating random number
          shell: date +%s
          register: rand_num

        - name: Setting up the master hostname 
          shell: |
            ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'echo master-{{ rand_num.stdout }}.{{ dns_server }} > /etc/hostname'
            ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'systemctl start systemd-hostnamed'

        - name: Setting up the compute nodes hostname
          shell: |
            ssh -o StrictHostKeyChecking=no root@{{item.1}} 'echo node{{item.0}}-{{ rand_num.stdout }}.{{ dns_server }} > /etc/hostname'
            ssh -o StrictHostKeyChecking=no root@{{item.1}} 'systemctl start systemd-hostnamed'  
          with_together: 
            - [ '1', '2', '3' ]
            - "{{ compute_ip.stdout_lines }}" 

#The VMs are already subscribed with some credentials. Need to unsubscribe the VMs & subscribe it again with new credentials.
        - name: Unsubscribing the nodes
          shell: ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager unregister'
          ignore_errors: true
          with_lines: cat ./ip.csv 

        - name: Subscribing the nodes
          shell: |
            ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager register --username={{ subscription_id }} --password={{ subscription_password }}'
            ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager attach --auto'
            ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager refresh'
          with_lines: cat ./ip.csv

        - name: Getting the pool-id
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'subscription-manager list --available --matches '*OpenShift*' | grep "Pool ID" | awk '\''NR == 1'\'' | awk '\''{print $3}'\'''
          register: pool_id

        - name: Attaching pool to each nodes
          shell: | 
            ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager attach --pool={{ pool_id.stdout }}'
            ssh -o StrictHostKeyChecking=no root@{{item}} 'subscription-manager repos     --enable="rhel-7-server-rpms"     --enable="rhel-7-server-extras-rpms"     --enable="rhel-7-server-ose-3.10-rpms"     --enable="rhel-7-server-ansible-2.4-rpms"'
          with_lines: cat ./ip.csv

        - name: Joining the nodes to the DNS Server
          shell: ssh -o StrictHostKeyChecking=no root@{{item}} 'echo {{ admin_password }} | realm join --user=Administrator {{ dns_server }}'
          with_lines:  cat ./ip.csv

        - name: SSH from master to master using DNS
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ssh -o StrictHostKeyChecking=no root@master-{{ rand_num.stdout }}.{{ dns_server }} ls'  

        - name: SSH from master to compute nodes using DNS
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ssh -o StrictHostKeyChecking=no root@node{{item}}-{{ rand_num.stdout }}.{{ dns_server }} ls'
          with_items: 
            - 1
            - 2
            - 3  

        - name: Replacing master ip in inventory
          replace:
            path: ./inventory.yml
            regexp: "master_ip"
            replace: "{{ master_ip.stdout }}"  

        - name: Replace compute node ip in inventory
          replace:
            path: ./inventory.yml
            regexp: "{{item.0}}"
            replace: "{{item.1}}"
          with_together: 
            - [ 'node1_ip', 'node2_ip', 'node3_ip' ]
            - "{{ compute_ip.stdout_lines }}"  

        - name: Replacing master DNS in inventory
          replace:
            path: ./inventory.yml
            regexp: "master_dns"
            replace: "master-{{ rand_num.stdout }}.{{ dns_server }}"

        - name: Replacing nodes DNS in inventory
          replace:
            path: ./inventory.yml
            regexp: "{{item.0}}"
            replace: "{{item.1}}"
          with_together:
            - [ 'node1_dns', 'node2_dns', 'node3_dns' ]
            - [ 'node1-{{ rand_num.stdout }}.{{ dns_server }}', 'node2-{{ rand_num.stdout }}.{{ dns_server }}', 'node3-{{ rand_num.stdout }}.{{ dns_server }}' ]          

        - name: Copying inventory into master
          shell: scp -o StrictHostKeyChecking=no inventory.yml root@{{ master_ip.stdout }}:/root/openshift-ansible/inventory/

        - name: Checking out to release branch-3.10
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'cd /root/openshift-ansible && git checkout release-3.10'

        - name: Running Openshift pre-requisites
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ansible-playbook -i /root/openshift-ansible/inventory/inventory.yml /root/openshift-ansible/playbooks/prerequisites.yml -vv'
          
        - name: Deploying openshift cluster
          shell: ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'ansible-playbook -i /root/openshift-ansible/inventory/inventory.yml /root/openshift-ansible/playbooks/deploy_cluster.yml -vv'

        - name: Disabling selinux on each nodes 
          shell: ssh -o StrictHostKeyChecking=no root@{{item}} 'setenforce 0'
          with_lines: cat ./ip.csv  

        - name: Copying bash file in master & Executing
          shell: | 
            scp -o StrictHostKeyChecking=no post_install_setting.sh root@{{ master_ip.stdout }}:/root/ 
            ssh -o StrictHostKeyChecking=no root@{{ master_ip.stdout }} 'bash post_install_setting.sh && rm post_install_setting.sh'