Fix deploy and teardown without node enrolment

If the ironic_config field is not present in a node definition, then
that node should not be registered with ironic. In this case we also
don't need to query glance for images or wait for resources to appear
in placement.

If nova_flavors is empty, we do not need to register flavors, so no need
to install the client or check for OS_USERNAME.

Also fixes an issue in the action plugin where it would fail if
ironic_config field is not present in a node definition.

Finally, in CI deploy/teardown tests, rather than skipping tasks, we now
remove the ironic_config field from the node definition, and set
nova_flavors to empty, such that we exercise these code paths.

Change-Id: I29b42665f1609c99e80f12ab6f3815d0e0918dae
Story: 2004412
Task: 28056

ansible/action_plugins/tenks_update_state.py

@@ -156,8 +156,9 @@ class ActionModule(ActionBase):
         # to count as an 'instance' of the spec.
         MATCHING_ATTRS = {'type', 'ironic_config'}
         for spec in specs:
-            if ((all(spec[attr] == node[attr] for attr in MATCHING_ATTRS) and
-                 spec['count'] > 0)):
+            if (all(spec.get(attr) == node.get(attr)
+                    for attr in MATCHING_ATTRS)
+                    and spec['count'] > 0):
                 spec['count'] -= 1
                 return True
         return False

ansible/flavor_registration.yml

@@ -10,3 +10,4 @@
           {{ python_upper_constraints_url }}
         flavors: "{{ nova_flavors }}"
         flavors_state: "{{ 'absent' if cmd == 'teardown' else 'present' }}"
+      when: flavors | length > 0

ansible/node_enrolment.yml

@@ -5,13 +5,6 @@
         file: "{{ state_file_path }}"
         name: tenks_state
 
-    - name: Check that OpenStack credentials exist in the environment
-      fail:
-        msg: >
-          $OS_USERNAME was not found in the environment. Ensure the OpenStack
-          credentials exist in your environment, perhaps by sourcing your RC file.
-      when: not lookup('env', 'OS_USERNAME')
-
     - name: Perform Ironic enrolment for each hypervisor's nodes
       include_role:
         name: ironic-enrolment
@@ -26,3 +19,4 @@
       loop: "{{ query('dict', tenks_state) }}"
       loop_control:
         loop_var: alloc
+      when: ironic_nodes | selectattr('ironic_config', 'defined') | list | length > 0

ansible/node_networking.yml

@@ -15,11 +15,13 @@
       include_role:
         name: veth-pair
       vars:
-        veth_pair_ovs_bridge: "{{ item.1 | bridge_name }}"
-        veth_pair_ovs_link_name: "{{ item.0 | ovs_link_name(item.1) }}"
-        veth_pair_source_link_name: "{{ item.0 | source_link_name(item.1) }}"
+        veth_pair_ovs_bridge: "{{ physnet.1 | bridge_name }}"
+        veth_pair_ovs_link_name: "{{ physnet.0 | ovs_link_name(physnet.1) }}"
+        veth_pair_source_link_name: "{{ physnet.0 | source_link_name(physnet.1) }}"
         veth_pair_state: "{{ 'absent' if cmd == 'teardown' else 'present' }}"
       # Loop over each physical network for each node allocated to this host.
       # Allocations are stored in localhost's vars.
       loop: >-
         {{ nodes | subelements('physical_networks') }}
+      loop_control:
+        loop_var: physnet

ansible/resource_wait.yml

@@ -1,38 +1,38 @@
 ---
 - hosts: localhost
   tasks:
-    - name: Check that OpenStack credentials exist in the environment
-      fail:
-        msg: >
-          $OS_USERNAME was not found in the environment. Ensure the OpenStack
-          credentials exist in your environment, perhaps by sourcing your RC file.
-      when: not lookup('env', 'OS_USERNAME')
+    - name: Set default value for expected resources
+      set_fact:
+        tenks_expected_resources: []
 
-    - name: Gather list of OpenStack services
-      command: >-
-        {{ virtualenv_path }}/bin/openstack service list -f json
-      register: service_list_output
-      changed_when: false
+    - name: Build list of expected resources
+      # takes the form: [{ resource_class: CUSTOM_TEST_RC, amount: 2, traits: [] }, ]
+      vars:
+        resource:
+          amount: "{{ spec.count | int }}"  # this gets converted back to a string
+          resource_class: "{{ 'CUSTOM_' ~ spec.ironic_config.resource_class | upper | replace('-', '_') }}"
+          traits: "{{ spec.ironic_config.traits | default([])}}"
+      set_fact:
+        tenks_expected_resources: >-
+          {{ tenks_expected_resources + [resource] }}
+      loop: "{{ specs }}"
+      when: "'ironic_config' in spec"
+      loop_control:
+        loop_var: spec
 
     - block:
-      - name: Set default value for expected resources
-        set_fact:
-          tenks_expected_resources: []
+      - name: Check that OpenStack credentials exist in the environment
+        fail:
+          msg: >
+            $OS_USERNAME was not found in the environment. Ensure the OpenStack
+            credentials exist in your environment, perhaps by sourcing your RC file.
+        when: not lookup('env', 'OS_USERNAME')
 
-      - name: Build list of expected resources
-        # takes the form: [{ resource_class: CUSTOM_TEST_RC, amount: 2, traits: [] }, ]
-        vars:
-          resource:
-            amount: "{{ spec.count | int }}"  # this gets converted back to a string
-            resource_class: "{{ 'CUSTOM_' ~ spec.ironic_config.resource_class | upper | replace('-', '_') }}"
-            traits: "{{ spec.ironic_config.traits | default([])}}"
-        set_fact:
-          tenks_expected_resources: >-
-            {{ tenks_expected_resources + [resource] }}
-        loop: "{{ specs }}"
-        when: "'ironic_config' in spec"
-        loop_control:
-          loop_var: spec
+      - name: Gather list of OpenStack services
+        command: >-
+          {{ virtualenv_path }}/bin/openstack service list -f json
+        register: service_list_output
+        changed_when: false
 
       - name: Include the wait-for-resources role
         include_role:
@@ -42,5 +42,6 @@
           wait_for_resources_venv: "{{ virtualenv_path }}"
           wait_for_resources_python_upper_constraints_url: >-
             {{ python_upper_constraints_url }}
-      # Only attempt to wait for resources when the placement service is running
-      when: service_list_output.stdout | from_json | selectattr('Type', 'equalto', 'placement') | list | length >= 1
+        # Only attempt to wait for resources when the placement service is running
+        when: service_list_output.stdout | from_json | selectattr('Type', 'equalto', 'placement') | list | length >= 1
+      when: tenks_expected_resources | length > 0

ansible/roles/ironic-enrolment/tasks/main.yml

@@ -1,4 +1,11 @@
 ---
+- name: Check that OpenStack credentials exist in the environment
+  fail:
+    msg: >
+      $OS_USERNAME was not found in the environment. Ensure the OpenStack
+      credentials exist in your environment, perhaps by sourcing your RC file.
+  when: not lookup('env', 'OS_USERNAME')
+
 # This is useful to get a uniquely generated temporary path.
 - name: Create temporary file for pip requirements
   tempfile:

playbooks/tenks-deploy-teardown/run.yml

@@ -9,7 +9,7 @@
     - name: Deploy tenks cluster
       shell:
         cmd: >-
-          {{ ansible_playbook_bin }} -vvv --skip-tags openstack
+          {{ ansible_playbook_bin }} -vvv
           --inventory ansible/inventory
           --extra-vars=@{{ tenks_overrides_path }}
           ansible/deploy.yml > {{ logs_dir }}/ansible/tenks-deploy
@@ -25,7 +25,7 @@
     - name: Teardown tenks cluster
       shell:
         cmd: >-
-          {{ ansible_playbook_bin }} -vvv --skip-tags openstack
+          {{ ansible_playbook_bin }} -vvv
           --inventory ansible/inventory
           --extra-vars=@{{ tenks_overrides_path }}
           ansible/teardown.yml > {{ logs_dir }}/ansible/tenks-teardown

playbooks/tenks-deploy-teardown/templates/tenks-overrides.yml.j2

@@ -17,13 +17,8 @@ node_types:
 specs:
   - type: type0
     count: 2
-    ironic_config:
-      resource_class: test-rc
-      network_interface: flat
 
-nova_flavors:
-  - resource_class: test-rc
-    node_type: type0
+nova_flavors: []
 
 physnet_mappings:
   physnet1: breth1