Ansible playbook to start a Scylla cluster, with 10 EBS attached to each node

provision-ec2-volume.yaml

## This Ansible script start a cluster of 3 nodes on EC2
## And attach 10 ESB, 100G each

- name: Provision voulums
  hosts: localhost
  connection: local
  vars:
    region: us-east-1
    cluster_nodes: 3
    user_data: "--clustername test-cluster --totalnodes {{cluster_nodes}}"

  tasks:
    - name: create instance
      local_action:
        module: ec2
        wait: yes
        keypair: "tzach-test-and-deploy-key" ## Use your own key!
        image: "ami-dd46ffca" ## Scylla 1.2.1 AMI
        assign_public_ip: yes
        instance_type: "c3.8xlarge"
        count:  "{{cluster_nodes}}"
        user_data: "{{user_data}}"
        region: "{{region}}"
        group: cassandra-security-group ## Use your own group!
        vpc_subnet_id: "subnet-ec4a72c4" ## Use your own subnet!
        instance_tags:
          Name: "Tzach EBS test" ## Use your own name ;)
      register: ec2

    - add_host: hostname={{ item.public_ip }} groupname=NewDB
      with_items: ec2.instances

    - name: create volume
      local_action:
        module: ec2_vol
        instance: "{{item[0].id}}"
        region: "{{region}}"
        volume_type: gp2
        volume_size: 100
        device_name: "{{item[1]}}"
      register: ec2_vol
      with_nested:
        - ec2.instances
        - [ '/dev/xvdf', '/dev/xvdg', '/dev/xvdh', '/dev/xvdi', '/dev/xvdj', '/dev/xvdk', '/dev/xvdl', '/dev/xvdm', '/dev/xvdn', '/dev/xvdo' ]


    - debug: msg="{{ec2_vol}}"

    - name: tag a resource
      local_action:
        module: ec2_tag
        region: "{{region}}"
        resource: "{{item.volume_id}}"
        state: present
        tags:
          Name: "tzach" ## Use your own name again!
          use: "data"
      with_items: ec2_vol.results

    - name: Wait for SSH to come up
      wait_for: host={{item.public_ip}} port=22 delay=60 timeout=600 state=started
      with_items: ec2.instances


- name: Prepare scylla nodes
  hosts: NewDB
  user: "centos"
  tasks:
    - name: restart scylla service
      service: name=scylla-server state=stopped
      sudo: yes

## This part cancel the RAID setup done by Scylla AMI setup, and run it again on the new ESBs

    - command: 'umount /var/lib/scylla'
      sudo: yes
    - command: 'mdadm --stop md0'
      sudo: yes
    - command: 'scylla_raid_setup --disks /dev/xvdf,/dev/xvdg,/dev/xvdh,/dev/xvdi,/dev/xvdj,/dev/xvdk,/dev/xvdl,/dev/xvdm,/dev/xvdn,/dev/xvdo --update-fstab'
      sudo: yes

    - debug: msg="starting scylla_io_setup, this part can take long minutes!"
    - command: '/usr/sbin/scylla_io_setup'
      sudo: yes

    - name: restart scylla service
      service: name=scylla-server state=started
      sudo: yes

    - name: restart jmx service
      service: name=scylla-jmx state=started
      sudo: yes