glusterclient.yml

---

# Note for Antonio: after installation of openstack, run:
# nova-manage network create private --fixed_range_v4 10.9.0.0/24  --dns1 130.60.128.3 --dns2 130.60.64.51

- hosts: gluster_cloud_nodes
  tasks:
    - name: Check if `python-apt` package is installed
      action: shell apt-get install -y {{ item }}
      with_items:
        - python-apt
        - python-pycurl
      tags:
        - apt

    - name: fix for uzh ubuntu distribution not present
      apt_repository: repo="deb http://www.gc3.uzh.ch/packages/uzhonly/ubuntu trusty main" state=absent
      tags: 
        - apt

    - name: Ensure extra reposistories are present (Ubuntu)
      action: apt_repository repo="deb http://archive.ubuntu.com/ubuntu {{ ansible_distribution_release }} universe multiverse" state=present
      tags:
        - apt

    - name: configure ppa to get the latest version of gluster
      apt_repository: repo=ppa:semiosis/ubuntu-glusterfs-3.5
      tags:
        - gluster
        - apt

    - name: install base packages
      apt: name={{ item }} state=installed update_cache=yes
      with_items:
        - sysvinit-utils
        - software-properties-common
        - python-software-properties
        - python-pycurl
        - aptitude
        - glusterfs-client
      tags:
        - apt
  
    - name: Ensure cfengine is NOT running
      service: name=cfengine3 state=stopped

- hosts: gluster_cloud_controller
  vars:
    gluster_volumes:
      - storage1:/cinder
      - storage2:/cinder
      - storage3:/cinder
      - storage4:/cinder
    cinder_variables:
      volume_driver: cinder.volume.drivers.glusterfs.GlusterfsDriver
      glusterfs_shares_config: /etc/cinder/shares.conf
      glusterfs_mount_point_base: /var/lib/cinder/volumes

  tasks:
    - name: Update cinder.conf
      ini_file: dest=/etc/cinder/cinder.conf
                section=DEFAULT
                option={{ item.key }}
                value={{ item.value }}
      with_dict: cinder_variables
      notify: restart cinder

    - name: create /etc/cinder/shares.conf file
      lineinfile:
        dest={{ cinder_variables['glusterfs_shares_config'] }}
        line={{ item }}
        create=yes
      with_items: gluster_volumes
      notify: restart cinder

    - name: ensure qemu-img and libgfapi are installed. 
      # Also, we need a kernel at least 3.3 because of
      # http://lists.openstack.org/pipermail/openstack-operators/2013-May/002980.html
      # sysfstools is used instead for `systool`, an error we got while trying to attach a cinder volume:
      # systool is not installed
      apt: name={{ item }} state=installed
      with_items:
        - qemu-utils
        - glusterfs-client
        - sysfsutils

  handlers:
    - name: restart cinder
      service: name=cinder-volume state=restarted
  

- hosts: gluster_cloud_compute
  # Basically two changes:
  # 1) use a fuse FS for /var/lib/nova/instances, for VM starting from glance images
  # 2) use libgfapi for Cinder volumes (VM starting from volume or
  #    volumes attached to the VM after creation)
  vars:
    gluster_volume: nova-instances
    nova_variables:
      qemu_allowed_storage_drivers: gluster
      remove_unused_resized_minimum_age_seconds: 360000
      image_cache_manager_interval: 300
      remove_unused_base_images: false
      remove_unused_original_minimum_age_seconds: 8640000
      remove_unused_resized_minimum_age_seconds: 360000

  tasks:
    - name: mount /var/lib/nova/instances from gluster
      mount: name=/var/lib/nova/instances
             src={{ groups.gluster_data[0] }}:/{{ gluster_volume }} 
             fstype=glusterfs 
             opts=backupvolfile-server={{ groups.gluster_data[1] }},_netdev
             state=mounted
      notify: restart nova-compute

    - name: update nova-compute.conf
      ini_file: dest=/etc/nova/nova-compute.conf
                section=DEFAULT
                option={{ item.key }} value={{ item.value }} 
                backup=yes 
      with_dict: nova_variables

    - name: configure ppa to get a version of qemu with gluster support
      apt_repository: repo=ppa:semiosis/ubuntu-qemu-glusterfs
      tags:
        - gluster
        - apt

    - name: Force downgrade of qemu, in order to have qemu with gluster support
      apt: name={{ item }}=2.0.0~rc1+dfsg-0ubuntu3.1semiosis state=installed force=yes
      with_items:
        - qemu-keymaps
        - qemu-kvm
        - qemu-system-common
        - qemu-system-x86
        - qemu-utils
      tags:
        - gluster
        - apt

  handlers:
    - name: restart nova-compute
      service: name=nova-compute state=restarted