Adding serial console support

This change is to add serial console support
serial console is needed in the case the underlying platform
does not support the spice or novnc option.

Another benefit is more extended configurations options users
have more options in how their Openstack enviroment is configured

Defaults for serialconsole are added to /defaults/main.yml

/templates/nova.conf.j2 template has been changed so new variables
can be imported

the file nova_install.yml has been changed: added conditional to
ensure no new console playbooks are loaded.

Change-Id: I02dc48a8d562d20f37b21e03207e91a220b6dbaf
Partial-Bug: #1696701
Depends-On: I30f91b20b195e578647ea2a0cfe087bdac2b5b6b

defaults/main.yml

@@ -237,6 +237,15 @@ nova_novncproxy_agent_enabled: True
 nova_novncproxy_git_repo: https://github.com/novnc/noVNC
 nova_novncproxy_git_install_branch: master
 
+## Nova serialconsole
+nova_serialconsoleproxy_proto: "ws"
+nova_serialconsoleproxy_port: 6083
+nova_serialconsoleproxy_port_range: 10000:20000
+nova_serialconsoleproxy_base_uri: "{{ nova_serialconsoleproxy_proto }}://{{ external_lb_vip_address }}:{{ nova_serialconsoleproxy_port }}"
+nova_serialconsoleproxy_base_url: "{{ nova_serialconsoleproxy_base_uri }}"
+nova_serialconsoleproxy_serialconsole_proxyserver_proxyclient_address: "{{ ansible_host }}"
+nova_serialconsoleproxy_enabled: True
+
 ## Nova metadata
 nova_metadata_proxy_enabled: "{{ nova_network_services[nova_network_type]['metadata_proxy_enabled'] | bool }}"
 nova_metadata_host: "{{ internal_lb_vip_address }}"
@@ -292,7 +301,7 @@ nova_libvirt_hw_disk_discard: '{{ nova_libvirt_images_rbd_pool is defined | tern
 
 ## Nova console
 nova_console_agent_enabled: True
-# Set the console type. Presently the only options are ["spice", "novnc"].
+# Set the console type. Presently the only options are ["spice", "novnc", "serialconsole"].
 nova_console_type: spice
 
 # Nova console ssl info, presently only used by novnc console type
@@ -420,6 +429,7 @@ nova_novncproxy_init_overrides: {}
 nova_scheduler_init_overrides: {}
 nova_spicehtml5proxy_init_overrides: {}
 nova_placement_api_init_overrides: {}
+nova_serialproxy_init_overrides: {}
 
 ## Service Name-Group Mapping
 nova_services:
@@ -489,7 +499,12 @@ nova_services:
     uwsgi_port: "{{ nova_placement_service_port }}"
     wsgi_name: nova-placement-api
     wsgi_overrides: "{{ nova_placement_uwsgi_ini_overrides }}"
-
+  nova-serialconsole-proxy:
+    group: nova_console
+    service_name: nova-serialproxy
+    init_config_overrides: "{{ nova_serialproxy_init_overrides }}"
+    condition: "{{ nova_console_type == 'serialconsole' }}"
+    start_order: 4
 
 nova_novnc_pip_packages:
   - websockify

tasks/nova_install.yml

@@ -161,6 +161,7 @@
 - include: "consoles/nova_console_{{ nova_console_type }}_install.yml"
   when:
     - "'nova_console' in group_names"
+    - "nova_console_type != 'serialconsole'"
   tags:
     - nova-install
     - nova-novnc-console

templates/nova.conf.j2

@@ -111,7 +111,6 @@ catalog_info = volumev3:cinderv3:internalURL
 cross_az_attach = {{ nova_cross_az_attach }}
 os_region_name = {{ nova_service_region }}
 
-
 {% if nova_console_type == 'spice' %}
 [spice]
 agent_enabled = {{ nova_console_agent_enabled }}
@@ -133,6 +132,21 @@ novncproxy_base_url = {{ nova_novncproxy_base_url }}
 vncserver_listen = {{ nova_novncproxy_vncserver_listen }}
 vncserver_proxyclient_address = {{ nova_novncproxy_vncserver_proxyclient_address }}
 
+{% elif nova_console_type == 'serialconsole' %}
+[serial_console]
+enabled = {{ nova_serialconsoleproxy_enabled }}
+# Console Url and binds
+base_url= {{ nova_serialconsoleproxy_base_url }}
+proxyclient_address = {% if nova_management_address == 'localhost' %}127.0.0.1{% else %}{{ nova_management_address }}{% endif %}
+port_range = {{ nova_serialconsoleproxy_port_range }}
+{% if 'nova_console' in group_names %}
+serialproxy_host= {{ nova_serialconsoleproxy_serialconsole_proxyserver_proxyclient_address }}
+serialproxy_port= {{ nova_serialconsoleproxy_port }}
+{% endif %}
+
+[vnc]
+enabled = False
+
 {% endif %}
 
 # Glance