xci: roles: create-vm-nodes: Add role for creating XCI VM nodes

Add a new role based on the bifrost one to create nodes for the bifrost
virtual deployments. This role will install and configure libvirt on the
host, download a prebuilt OPNFV VM image and deploy the OPNFV VM using
that image. Moreover, it will create the rest of the nodes for the
virtual deployment which will be configured by bifrost later on.

Change-Id: I9fbd084261351d3b53ae373060f43df046191c5e
Co-Authored-by: Markos Chandras <mchandras@suse.de>
Signed-off-by: Manuel Buil <mbuil@suse.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/xci/playbooks/roles/create-vm-nodes/tasks/prepare_libvirt.yml b/xci/playbooks/roles/create-vm-nodes/tasks/prepare_libvirt.yml
new file mode 100644
index 00000000..e09e2d6b
--- /dev/null
+++ b/xci/playbooks/roles/create-vm-nodes/tasks/prepare_libvirt.yml
@@ -0,0 +1,119 @@
+---
+- name: "Restart libvirt service"
+  service: name="{{libvirt_service_name}}" state=restarted
+
+# NOTE(Shrews) We need to enable ip forwarding for the libvirt bridge to
+# operate properly with dnsmasq. This should be done before starting dnsmasq.
+- name: "Enable IP forwarding in sysctl"
+  sysctl:
+    name: "net.ipv4.ip_forward"
+    value: 1
+    sysctl_set: yes
+    state: present
+    reload: yes
+
+# NOTE(Shrews) Ubuntu packaging+apparmor issue prevents libvirt from loading
+# the ROM from /usr/share/misc.
+- name: "Look for sgabios in {{ sgabios_dir }}"
+  stat: path={{ sgabios_dir }}/sgabios.bin
+  register: test_sgabios_qemu
+
+- name: "Look for sgabios in /usr/share/misc"
+  stat: path=/usr/share/misc/sgabios.bin
+  register: test_sgabios_misc
+
+- name: "Place sgabios.bin"
+  command: cp /usr/share/misc/sgabios.bin /usr/share/qemu/sgabios.bin
+  when: >
+    test_sgabios_qemu == false and
+    test_sgabios_misc == true
+
+# NOTE(TheJulia): In order to prevent conflicts, stop
+# dnsmasq to prevent conflicts with libvirt restarting.
+# TODO(TheJulia): We shouldn't need to do this, but the
+# libvirt dhcp instance conflicts withour specific config
+# and taking this path allows us to not refactor dhcp at
+# this moment. Our DHCP serving should be refactored
+# so we don't need to do this.
+- name: "Stop default dnsmasq service"
+  service:
+    name: dnsmasq
+    state: stopped
+  ignore_errors: true
+
+# NOTE(TheJulia): Seems if you test in a VM, this might
+# be helpful if your installed your host originally
+# with the default 192.168.122/0/24 network
+- name: destroy libvirt network
+  virt_net:
+    name: "{{ vm_network }}"
+    state: absent
+    uri: "{{ vm_libvirt_uri }}"
+
+- name: ensure libvirt network is present
+  virt_net:
+    name: "{{ vm_network }}"
+    state: present
+    xml: "{{ lookup('template', 'net.xml.j2') }}"
+    uri: "{{ vm_libvirt_uri }}"
+
+- name: find facts on libvirt networks
+  virt_net:
+    command: facts
+    uri: "{{ vm_libvirt_uri }}"
+
+# NOTE(pas-ha) yet another place where non-local libvirt will not work
+- name: "Delete network interface if virtual network is not active"
+  command: ip link del {{ ansible_libvirt_networks[vm_network].bridge }}
+  when:
+    - ansible_libvirt_networks[vm_network].state != 'active'
+    - vm_libvirt_uri == 'qemu:///system'
+  ignore_errors: yes
+
+- name: set libvirt network to autostart
+  virt_net:
+    name: "{{ vm_network }}"
+    autostart: yes
+    uri: "{{ vm_libvirt_uri }}"
+
+- name: ensure libvirt network is running
+  virt_net:
+    name: "{{ vm_network }}"
+    state: active
+    uri: "{{ vm_libvirt_uri }}"
+
+- name: get libvirt network status
+  virt_net:
+    name: "{{ vm_network }}"
+    command: status
+    uri: "{{ vm_libvirt_uri }}"
+  register: test_vm_net_status
+
+- name: fail if libvirt network is not active
+  assert:
+    that: test_vm_net_status.status == 'active'
+
+- name: define a libvirt pool if not set
+  virt_pool:
+    name: "{{ node_storage_pool }}"
+    state: present
+    uri: "{{ vm_libvirt_uri }}"
+    xml: "{{ lookup('template', 'pool_dir.xml.j2') }}"
+
+- name: ensure libvirt pool is running
+  virt_pool:
+    name: "{{ node_storage_pool }}"
+    state: active
+    autostart: yes
+    uri: "{{ vm_libvirt_uri }}"
+
+- name: create dir for bm logs
+  file:
+    state: directory
+    path: "{{ node_logdir }}"
+    recurse: yes
+    mode: "0755"
+
+- name: install virtualbmc
+  pip:
+    name: virtualbmc