Openstack: Add support to configure the network of the node

Change-Id: I8f8bfb231ab5ff4c2a825451a57a5b38a641c300
Signed-off-by: Pedro Alvarez <pedro.alvarez@codethink.co.uk>
Signed-off-by: Richard Maw <richard.maw@codethink.co.uk>

4 files changed, 112 insertions, 0 deletions

diff --git a/openstack/usr/share/openstack/extras/00-disable-device.network b/openstack/usr/share/openstack/extras/00-disable-device.network
new file mode 100644
index 00000000..8e2532d0
--- /dev/null
+++ b/openstack/usr/share/openstack/extras/00-disable-device.network
@@ -0,0 +1,2 @@
+[Match]
+Name={{ item }}
diff --git a/openstack/usr/share/openstack/extras/60-device-dhcp.network b/openstack/usr/share/openstack/extras/60-device-dhcp.network
new file mode 100644
index 00000000..6fdbfd8d
--- /dev/null
+++ b/openstack/usr/share/openstack/extras/60-device-dhcp.network
@@ -0,0 +1,5 @@
+[Match]
+Name={{ item }}
+
+[Network]
+DHCP=yes
diff --git a/openstack/usr/share/openstack/network.yml b/openstack/usr/share/openstack/network.yml
new file mode 100644
index 00000000..f99f7f1a
--- /dev/null
+++ b/openstack/usr/share/openstack/network.yml
@@ -0,0 +1,67 @@
+---
+- hosts: localhost
+  vars_files:
+  - /etc/openstack/network.conf
+  tasks:
+# Create the bridges to use the External network mapped
+
+# Count number of network interfaces (interfaces starting with 'e')
+  - shell: ls /sys/class/net | grep ^e.* | wc -l
+    register: number_interfaces
+
+# Abort if there number of interfaces != 1
+  - fail:
+        msg: More than one, or none network interfaces found.
+    when: EXTERNAL_INTERFACE is not defined and number_interfaces.stdout != "1"
+
+  - shell: ls /sys/class/net | grep ^e.*
+    register: interface_name
+    when: EXTERNAL_INTERFACE is not defined
+
+  - set_fact:
+        ETH_INTERFACE: "{{ interface_name.stdout }}"
+    when: EXTERNAL_INTERFACE is not defined
+
+  - set_fact:
+        ETH_INTERFACE: "{{ EXTERNAL_INTERFACE }}"
+    when: EXTERNAL_INTERFACE is defined
+
+  - set_fact:
+        ETH_MAC_ADDRESS: "{{ hostvars['localhost']['ansible_' + ETH_INTERFACE]['macaddress'] }}"
+
+  - name: Create the /run/systemd/network
+    file:
+        path: /run/systemd/network
+        state: directory
+
+  - name: Disable dhcp on the bound physical interface
+    template:
+        src: /usr/share/openstack/extras/00-disable-device.network
+        dest: /run/systemd/network/00-disable-{{ item }}-config.network
+    with_items:
+    - "{{ ETH_INTERFACE }}"
+
+  - name: Disable dhcp on all the internal interfaces
+    template:
+        src: /usr/share/openstack/extras/00-disable-device.network
+        dest: /run/systemd/network/00-disable-{{ item }}-config.network
+    with_items:
+    - ovs-system
+
+  - openvswitch_bridge:
+        bridge: br-ex
+        state: present
+
+  - openvswitch_port:
+        bridge: br-ex
+        port: "{{ ETH_INTERFACE }}"
+        state: present
+
+  - shell: ovs-vsctl set bridge br-ex other-config:hwaddr={{ ETH_MAC_ADDRESS }}
+
+  - name: Enable dhcp on the Open vSwitch device that replaces our external interface
+    template:
+        src: /usr/share/openstack/extras/60-device-dhcp.network
+        dest: /run/systemd/network/60-{{ item }}-dhcp.network
+    with_items:
+    - br-ex
diff --git a/openstack/usr/share/openstack/openvswitch.yml b/openstack/usr/share/openstack/openvswitch.yml
new file mode 100644
index 00000000..4393e3db
--- /dev/null
+++ b/openstack/usr/share/openstack/openvswitch.yml
@@ -0,0 +1,38 @@
+---
+- hosts: localhost
+  tasks:
+
+  - name: Create openvswitch directories
+    file: path={{ item }} state=directory
+    with_items:
+    - /etc/openvswitch
+    - /var/run/openvswitch
+
+  - shell: >
+           ovsdb-tool create /etc/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema
+           creates=/etc/openvswitch/conf.db
+
+  # We enable the openvswitch-db-server in a different task to identify
+  # the first time we run this script by identifying when we enable the
+  # unit.
+  #
+  # We need to identify this to initialise the database.
+  - name: Enable openvswitch database service
+    service: name={{ item }} enabled=yes
+    with_items:
+    - openvswitch-db-server.service
+    register: openvswitch_db_enable
+
+  - name: Start openvswitch database service
+    service: name={{ item }} state=started
+    with_items:
+    - openvswitch-db-server.service
+
+  - name: initialise openvswitch-db
+    shell: ovs-vsctl --no-wait init
+    when: openvswitch_db_enable|changed
+
+  - name: Enable and start openstack-keystone service
+    service: name={{ item }} enabled=yes state=started
+    with_items:
+    - openvswitch.service