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markgoddardmarkgoddard
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Initial import from Kayobe master branch
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‎defaults/main.yml‎

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---
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# State of the VM. May be 'present' or 'absent'.
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libvirt_vm_state: present
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# Name of the VM.
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libvirt_vm_name:
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# Memory in MB.
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libvirt_vm_memory_mb:
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# Number of vCPUs.
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libvirt_vm_vcpus:
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# List of volumes.
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libvirt_vm_volumes: []
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# List of network interfaces.
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libvirt_vm_interfaces: []
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# Path to cache downloaded images.
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libvirt_vm_image_cache_path:
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# List of authorized SSH public keys.
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#libvirt_vm_public_keys: []

‎files/destroy_virt_volume.sh‎

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#!/bin/bash
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# Copyright (c) 2017 StackHPC Ltd.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Ensure that a libvirt volume does not exists.
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# On success, output a JSON object with a 'changed' item.
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if [[ $# -ne 2 ]]; then
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echo "Usage: $0 <name> <pool>"
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exit 1
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fi
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NAME=$1
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POOL=$2
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# Check whether a volume with this name exists.
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output=$(virsh vol-info --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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if echo "$output" | grep 'Storage volume not found' >/dev/null 2>&1; then
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echo '{"changed": false}'
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exit 0
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else
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echo "Unexpected error while getting volume info"
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echo "$output"
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exit $result
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fi
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fi
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# Delete the volume.
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output=$(virsh vol-delete --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to delete volume"
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echo "$output"
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exit $result
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fi
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echo '{"changed": true}'
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exit 0

‎files/virt_volume.sh‎

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#!/bin/bash
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# Copyright (c) 2017 StackHPC Ltd.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Ensure that a libvirt volume exists, optionally uploading an image.
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# On success, output a JSON object with a 'changed' item.
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if [[ $# -ne 4 ]] && [[ $# -ne 5 ]]; then
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echo "Usage: $0 <name> <pool> <capacity> <format> [<image>]"
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exit 1
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fi
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NAME=$1
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POOL=$2
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CAPACITY=$3
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FORMAT=$4
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IMAGE=$5
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# Check whether a volume with this name exists.
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output=$(virsh vol-info --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -eq 0 ]]; then
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echo '{"changed": false}'
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exit 0
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elif ! echo "$output" | grep 'Storage volume not found' >/dev/null 2>&1; then
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echo "Unexpected error while getting volume info"
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echo "$output"
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exit $result
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fi
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# Create the volume.
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output=$(virsh vol-create-as --pool $POOL --name $NAME --capacity $CAPACITY --format $FORMAT 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to create volume"
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echo "$output"
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exit $result
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fi
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# Determine the path to the volume file.
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output=$(virsh vol-key --pool $POOL --vol $NAME 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to get volume file path"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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# Change the ownership of the volume to qemu. Without doing this libvirt cannot
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# access the volume.
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output=$(chown qemu:qemu $output 2>1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to change ownership of the volume to qemu"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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if [[ -n $IMAGE ]]; then
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# Upload an image to the volume.
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output=$(virsh vol-upload --pool $POOL --vol $NAME --file $IMAGE 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to upload image $IMAGE to volume $NAME"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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# Resize the volume to the requested capacity.
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output=$(virsh vol-resize --pool $POOL --vol $NAME --capacity $CAPACITY 2>&1)
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result=$?
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if [[ $result -ne 0 ]]; then
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echo "Failed to resize volume $VOLUME to $CAPACITY"
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echo "$output"
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virsh vol-delete --pool $POOL --vol $NAME
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exit $result
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fi
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fi
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echo '{"changed": true}'
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exit 0

‎tasks/destroy-vm.yml‎

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---
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# The destroyed state does not seem to be idempotent, so check whether the VM
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# exists before destroying it.
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- name: Check the VM's status
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virt:
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name: "{{ libvirt_vm_name }}"
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command: list_vms
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register: result
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- block:
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- name: Ensure the VM is absent
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virt:
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name: "{{ libvirt_vm_name }}"
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state: destroyed
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- name: Ensure the VM is undefined
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virt:
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name: "{{ libvirt_vm_name }}"
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command: undefine
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when: libvirt_vm_name in result.list_vms

‎tasks/destroy-volumes.yml‎

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---
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- name: Ensure the VM volumes do not exist
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script: >
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destroy_virt_volume.sh
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{{ item.name }}
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{{ item.pool }}
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with_items: "{{ libvirt_vm_volumes }}"
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register: volume_result
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changed_when:
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- volume_result | success
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- (volume_result.stdout | from_json).changed | default(True)

‎tasks/main.yml‎

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---
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- block:
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- include: volumes.yml
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- include: vm.yml
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when: libvirt_vm_state == 'present'
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- block:
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- include: destroy-volumes.yml
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- include: destroy-vm.yml
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when: libvirt_vm_state == 'absent'

‎tasks/vm.yml‎

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---
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- name: Ensure the VM is defined
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virt:
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name: "{{ libvirt_vm_name }}"
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command: define
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xml: "{{ lookup('template', 'vm.xml.j2') }}"
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- name: Ensure the VM is running
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virt:
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name: "{{ libvirt_vm_name }}"
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state: running
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- name: Ensure the VM is started at boot
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virt:
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name: "{{ libvirt_vm_name }}"
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command: autostart

‎tasks/volumes.yml‎

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---
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- name: Ensure remote images are downloaded
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get_url:
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url: "{{ item }}"
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dest: "{{ libvirt_vm_image_cache_path }}/{{ item | basename }}"
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with_items: "{{ libvirt_vm_volumes | selectattr('image', 'defined') | map(attribute='image') | list }}"
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when: "'http' in item"
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- name: Ensure local images are copied
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copy:
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src: "{{ item }}"
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dest: "{{ libvirt_vm_image_cache_path }}/{{ item | basename }}"
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with_items: "{{ libvirt_vm_volumes | selectattr('image', 'defined') | map(attribute='image') | list }}"
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when: "'http' not in item"
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- name: Ensure the VM volumes exist
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script: >
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virt_volume.sh
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{{ item.name }}
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{{ item.pool }}
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{{ item.capacity }}
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{{ item.format | default('qcow2') }}
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{% if item.image is defined %}
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{{ libvirt_vm_image_cache_path }}/{{ item.image | basename }}
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{% endif %}
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with_items: "{{ libvirt_vm_volumes }}"
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register: volume_result
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changed_when:
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- volume_result | success
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- (volume_result.stdout | from_json).changed | default(True)

‎templates/vm.xml.j2‎

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<domain type='kvm'>
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<name>{{ libvirt_vm_name }}</name>
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<memory>{{ libvirt_vm_memory_mb | int * 1024 }}</memory>
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<vcpu>{{ libvirt_vm_vcpus }}</vcpu>
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<clock sync="localtime"/>
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<os>
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<type arch='x86_64'>hvm</type>
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</os>
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<devices>
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{% for volume in libvirt_vm_volumes %}
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<disk type='volume' device='{{ volume.device | default('disk') }}'>
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<driver name='qemu' type='{{ volume.format }}'/>
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<source pool='{{ volume.pool }}' volume='{{ volume.name }}'/>
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<target dev='vd{{ 'abcdefghijklmnopqrstuvwxyz'[loop.index] }}'/>
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</disk>
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{% endfor %}
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{% for interface in libvirt_vm_interfaces %}
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<interface type='network'>
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<source network='{{ interface.network }}'/>
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<model type='virtio'/>
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</interface>
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{% endfor %}
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<serial type='pty'>
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<target port='0'/>
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</serial>
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<console type='pty'>
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<target type='serial' port='0'/>
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</console>
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</devices>
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</domain>

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