Add the ability to disable hosts in inventory

It is possible, you don't want to run windmill on a specific host.
Rather then removing the host from the inventory file, you can now place
it in the disabled inventory group and our playbooks will skip it.

This logic is used by the opendev team when running ansible-playbooks
against their control plane.

Change-Id: I717fc4b951c16c5df6286bfe13f0fe5701cf7abb
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

inventory/testing/hosts

@@ -1,5 +1,7 @@
 bastion ansible_connection=local
 
+[disabled]
+
 [gear]
 gear01 ansible_host=127.0.2.1
 

playbooks/bootstrap.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Bootstrap nodes
-  hosts: all,!bastion
+  hosts: all:!bastion:!disabled
 
   pre_tasks:
     - name: Update apt cache
@@ -29,7 +29,7 @@
         name: openstack.sudoers
 
 - name: Bootstrap python dependencies for windmill
-  hosts: all,!bastion,!zookeeper
+  hosts: all:!bastion:!zookeeper:!disabled
 
   tasks:
     - name: Setup openstack.virtualenv role

playbooks/gear.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install gear.
-  hosts: gear
+  hosts: gear:!disabled
 
   tasks:
     - name: Setup openstack.gearman role

playbooks/nodepool-builder.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install nodepool-builder
-  hosts: nodepool-builder
+  hosts: nodepool-builder:!disabled
 
   post_tasks:
     - name: Run nodepool-server validation

playbooks/nodepool-launcher.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install nodepool-launcher
-  hosts: nodepool-launcher
+  hosts: nodepool-launcher:!disabled
 
   post_tasks:
     - name: Run nodepool-launcher validation

playbooks/nodepool.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Bootstrap nodepool hosts
-  hosts: nodepool
+  hosts: nodepool:!disabled
 
   tasks:
     # NOTE(pabelanger): Because of ordering issues create the required home
@@ -26,7 +26,7 @@
           - pre
 
 - name: Bootstrap nodepool-builder
-  hosts: nodepool-builder
+  hosts: nodepool-builder:!disabled
 
   tasks:
     - name: Setup openstack.ssh role
@@ -48,7 +48,7 @@
         src: "{{ windmill_config_git_dest }}/nodepool/elements"
 
 - name: Bootstrap nodepool hosts
-  hosts: nodepool
+  hosts: nodepool:!disabled
 
   tasks:
     - name: Setup openstack.openstacksdk role

playbooks/statsd.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install statsd.
-  hosts: statsd
+  hosts: statsd:!disabled
 
   tasks:
     - name: Setup openstack.statsd role.

playbooks/zookeeper.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zookeeper
-  hosts: zookeeper
+  hosts: zookeeper:!disabled
 
   tasks:
     - name: Setup openstack.zookeeper role

playbooks/zuul-executor.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zuul-executor
-  hosts: zuul-executor
+  hosts: zuul-executor:!disabled
 
   post_tasks:
     - name: Run zuul-executor validation

playbooks/zuul-fingergw.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zuul-fingergw
-  hosts: zuul-fingergw
+  hosts: zuul-fingergw:!disabled
 
   post_tasks:
     - name: Run zuul-fingergw validation

playbooks/zuul-merger.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zuul-merger
-  hosts: zuul-merger
+  hosts: zuul-merger:!disabled
 
   post_tasks:
     - name: Run zuul-merger validation

playbooks/zuul-scheduler.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zuul-scheduler
-  hosts: zuul-scheduler
+  hosts: zuul-scheduler:!disabled
 
   post_tasks:
     - name: Run zuul-scheduler validation

playbooks/zuul-web.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Install zuul-web
-  hosts: zuul-web
+  hosts: zuul-web:!disabled
 
   post_tasks:
     - name: Run zuul-web validation

playbooks/zuul.yaml

@@ -13,7 +13,7 @@
 # under the License.
 ---
 - name: Bootstrap SSH keys for zuul-connections
-  hosts: zuul-connections
+  hosts: zuul-connections:!disabled
 
   tasks:
     # NOTE(pabelanger): Because of ordering issues create the required home
@@ -39,7 +39,7 @@
         ssh_user_home: "{{ item.ssh_user_home }}"
 
 - name: Bootstrap zuul-executor
-  hosts: zuul-executor
+  hosts: zuul-executor:!disabled
 
   tasks:
     - name: Setup openstack.ssh role
@@ -55,7 +55,7 @@
         state: present
 
 - name: Install zuul
-  hosts: zuul
+  hosts: zuul:!disabled
 
   tasks:
     - name: Setup openstack.zuul role
@@ -67,7 +67,7 @@
         name: openstack.logrotate
 
 - name: Bootstrap zuul-web
-  hosts: zuul-web
+  hosts: zuul-web:!disabled
 
   tasks:
     - name: Setup openstack.nginx role