libvirt-new-kvm-cloudinit.yml

---
# needed packages on target-Host (depends on pytho3 or 2): 
# python3-libvirt / python-libvirt + python3-lxml / python-lxml
# Error is "The `libvirt` module is not importable. Check the requirements" -> see var "libvirt_host_python3" in tcharl.ansible_role_libvirt_host
#
#  debian 10: http://cdimage.debian.org/cdimage/openstack/current-10/debian-10-openstack-amd64.qcow2
#  ubuntu 20.04: http://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img
#  centos8: https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.1.1911-20200113.3.x86_64.qcow2
#
# https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html/installation_and_configuration_guide/setting_up_cloud_init
#
- name: Ensure that Libvirt is configured
  hosts: all
  # roles:
    # - role: stackhpc.libvirt-host
    # - role: tcharl.ansible_role_libvirt_host
  vars_prompt:
    - name: libvirt_vm_hostname
      prompt: "hostname (FQDN)? "
      private: no
    - name: libvirt_vm_memory_max
      prompt: "Memory (in MiB)? "
      default: 2048
      private: no
    - name: libvirt_vm_cloudinit_image
      prompt: "mount which iso-file (alternatives: debian-10-openstack-amd64.qcow2, focal-server-cloudimg-amd64.qcow2, CentOS-8-GenericCloud-8.1.1911-20200113.3.x86_64.qcow2) ? "
      default: "debian-10.6.0-openstack-amd64.qcow2"
      private: no
    - name: libvirt_vm_image_size
      prompt: "size of Disk (GiB)? "
      default: 20
      private: no
    - name: libvirt_vm_net_mac
      prompt: "Define MAC for VM (default: no, example: 00:50:56:00:AA:BB)? "
      default: ""
      private: no
    - name: libvirt_vm_image_create
      prompt: "Create Image/Disk thin (aka sparse, lazy allocated = fast) or thick (creates full file)? "
      default: thin
      private: no

  vars:
    # additional static IP:
#    libvirt_os_network_interface: |
#      iface eth0 inet static
#      address 192.168.0.2
#      network 192.168.0.0
#      netmask 255.255.255.0
#      broadcast 192.168.0.255
#      gateway 192.168.0.1
    libvirt_cloudinit_mkiso_cmd: genisoimage
    # opensuse:
    # libvirt_cloudinit_mkiso_cmd: mkisofs
    libvirt_os_default_user: debian
    libvirt_os_default_userpassword: secretpass
    # Whether to enable SSH password auth
    libvirt_os_ssh_pwauth: true
    libvirt_os_default_rootpassword: secret
    libvirt_os_ssh_pubkeys:
    - ssh-rsa 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 mypubkey
    libvirt_os_timezone: "Europe/Berlin"
    libvirt_vm_basedir: "/srv/kvm/images"
    libvirt_vm_isodir: "/srv/kvm/bootCD"
    libvirt_vm_cloudimage_iso_path: "{{ libvirt_vm_isodir }}/{{ libvirt_vm_hostname }}-cloudinit.iso"
    libvirt_vm_cloudimage_source_image: "{{ libvirt_vm_isodir }}/{{ libvirt_vm_cloudinit_image }}"
    libvirt_vm_imagepath: "{{ libvirt_vm_basedir }}/{{ libvirt_vm_hostname }}.qcow2"
    # libvirt_vm_memory_max: 8192
    libvirt_vm_memory_current: "{{ libvirt_vm_memory_max }}"
    libvirt_vm_cpu_cores: 2
    libvirt_vm_net_bridge: "br_kvm"

  tasks:
  - name: Define vm from xml and set autostart
    virt:
      command: define
      xml: "{{ lookup('template', './vm_libvirt_template_cloudinit.xml.j2') }}"
      autostart: yes

  - name: Check that libvirt_vm_imagepath exists
    stat:
      path: "{{ libvirt_vm_imagepath }}"
    register: libvirt_vm_image_exists

  - name: Create temporary dir to build cloud-init config
    tempfile:
      state: directory
      suffix: cloudinit
    register: result_tempdir
    become: true

  - name: Create cloud init meta-data for guest
    template:
      src: templates/vm_libvirt_cloudinit_meta_data.j2
      dest: "{{ result_tempdir.path }}/meta-data"
      mode: '0644'
    become: true

  - name: Create cloud init user-data for guest
    template:
      src: templates/vm_libvirt_cloudinit_user_data.j2
      dest: "{{ result_tempdir.path }}/user-data"
      mode: '0644'
    become: true

  - name: Make cloud-init iso for guest
    shell: >
      {{ libvirt_cloudinit_mkiso_cmd }} -J -l -R -V "cidata" -iso-level 4
      -o {{ libvirt_vm_cloudimage_iso_path }}
      {{ result_tempdir.path }}/user-data
      {{ result_tempdir.path }}/meta-data
    args:
      creates: "{{ libvirt_vm_cloudimage_iso_path }}"
      executable: /bin/bash
    become: true

  - name: Clean up temporary dir
    file:
      path: "{{ result_tempdir.path }}"
      state: absent
    become: true

  - name: Copy Image
    shell: dd if={{ libvirt_vm_cloudimage_source_image }} of="{{ libvirt_vm_imagepath }}" bs=1G count="{{ libvirt_vm_image_size }}"
    when: not libvirt_vm_image_exists.stat.exists

  - name: Resize disk for VM (thin)
    command: qemu-img resize -f qcow2 {{ libvirt_vm_imagepath }} {{ libvirt_vm_image_size }}G
    when: libvirt_vm_image_create == "thin" and not libvirt_vm_image_exists.stat.exists

  - name: Resize disk for VM (thick)
    command: qemu-img resize --preallocation=falloc -f qcow2 {{ libvirt_vm_imagepath }} {{ libvirt_vm_image_size }}G
    when: libvirt_vm_image_create == "thick" and not libvirt_vm_image_exists.stat.exists

  - name: Start VM
    community.libvirt.virt:
      name: "{{ libvirt_vm_hostname }}"
      state: running