Add test case for k8s cascading deletes (#55987)

* Add test case for non-cascading deletes

Deleting a DaemonSet does not delete associated pods,
even though it should

* Add coverage module when using pip

Otherwise tests seemingly fail

test/integration/targets/k8s/defaults/main.yml

@@ -1,15 +1,15 @@
 recreate_crd_default_merge_expectation: recreate_crd is not failed
 
-wait_pod_metadata:
+k8s_pod_metadata:
   labels:
-    app: "{{ wait_pod_name }}"
+    app: "{{ k8s_pod_name }}"
 
-wait_pod_spec:
+k8s_pod_spec:
   containers:
-    - image: "{{ wait_pod_image }}"
+    - image: "{{ k8s_pod_image }}"
       imagePullPolicy: Always
-      name: "{{ wait_pod_name }}"
-      command: "{{ wait_pod_command }}"
+      name: "{{ k8s_pod_name }}"
+      command: "{{ k8s_pod_command }}"
       readinessProbe:
         initialDelaySeconds: 15
         exec:
@@ -19,14 +19,14 @@ wait_pod_spec:
         limits:
           cpu: "100m"
           memory: "100Mi"
-      ports: "{{ wait_pod_ports }}"
+      ports: "{{ k8s_pod_ports }}"
 
-wait_pod_command: []
+k8s_pod_command: []
 
-wait_pod_ports: []
+k8s_pod_ports: []
 
-wait_pod_template:
-  metadata: "{{ wait_pod_metadata }}"
-  spec: "{{ wait_pod_spec }}"
+k8s_pod_template:
+  metadata: "{{ k8s_pod_metadata }}"
+  spec: "{{ k8s_pod_spec }}"
 
 k8s_openshift: yes

test/integration/targets/k8s/tasks/delete.yml

@@ -0,0 +1,101 @@
+- name: ensure that there are actually some nodes
+  k8s_facts:
+    kind: Node
+  register: nodes
+
+- block:
+    - set_fact:
+        delete_namespace: delete
+
+    - name: ensure namespace exists
+      k8s:
+        definition:
+          apiVersion: v1
+          kind: Namespace
+          metadata:
+            name: "{{ delete_namespace }}"
+
+    - name: add a daemonset
+      k8s:
+        definition:
+          apiVersion: extensions/v1beta1
+          kind: DaemonSet
+          metadata:
+            name: delete-daemonset
+            namespace: "{{ delete_namespace }}"
+          spec:
+            selector:
+              matchLabels:
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
+        wait: yes
+        wait_timeout: 180
+      vars:
+        k8s_pod_name: delete-ds
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:1
+      register: ds
+
+    - name: check that daemonset wait worked
+      assert:
+        that:
+          - ds.result.status.currentNumberScheduled == ds.result.status.desiredNumberScheduled
+
+    - name: check if pods exist
+      k8s_facts:
+        namespace: "{{ delete_namespace }}"
+        kind: Pod
+        label_selectors:
+          - "app={{ k8s_pod_name }}"
+      vars:
+        k8s_pod_name: delete-ds
+      register: pods_create
+
+    - name: assert that there are pods
+      assert:
+        that:
+          - pods_create.resources
+
+    - name: remove the daemonset
+      k8s:
+        kind: DaemonSet
+        name: delete-daemonset
+        namespace: "{{ delete_namespace }}"
+        state: absent
+        wait: yes
+
+    - name: show status of pods
+      k8s_facts:
+        namespace: "{{ delete_namespace }}"
+        kind: Pod
+        label_selectors:
+          - "app={{ k8s_pod_name }}"
+      vars:
+        k8s_pod_name: delete-ds
+
+    - name: wait for background deletion
+      pause:
+        seconds: 30
+
+    - name: check if pods still exist
+      k8s_facts:
+        namespace: "{{ delete_namespace }}"
+        kind: Pod
+        label_selectors:
+          - "app={{ k8s_pod_name }}"
+      vars:
+        k8s_pod_name: delete-ds
+      register: pods_delete
+
+    - name: assert that deleting the daemonset deleted the pods
+      assert:
+        that:
+          - not pods_delete.resources
+
+  always:
+      - name: remove namespace
+        k8s:
+          kind: Namespace
+          name: "{{ delete_namespace }}"
+          state: absent
+
+  when: (nodes.resources | length) > 0

test/integration/targets/k8s/tasks/full_test.yml

@@ -4,6 +4,7 @@
 
 # Kubernetes resources
 
+- include_tasks: delete.yml
 - include_tasks: waiter.yml
 
 - block:

test/integration/targets/k8s/tasks/main.yml

@@ -12,10 +12,11 @@
 
 - pip:
     name:
-      - openshift==0.8.1
+      - openshift==0.8.8
+      - coverage
     virtualenv: "{{ virtualenv }}"
     virtualenv_command: "{{ virtualenv_command }}"
-    virtualenv_site_packages: yes
+    virtualenv_site_packages: no
 
 - include_tasks: validate_not_installed.yml
   vars:
@@ -29,11 +30,12 @@
 
 - pip:
     name:
-      - openshift==0.8.1
+      - openshift==0.8.8
       - kubernetes-validate==1.12.0
+      - coverage
     virtualenv: "{{ virtualenv }}"
     virtualenv_command: "{{ virtualenv_command }}"
-    virtualenv_site_packages: yes
+    virtualenv_site_packages: no
 
 - include_tasks: validate_installed.yml
   vars:
@@ -50,9 +52,10 @@
     name:
       - openshift==0.6.0
       - kubernetes==6.0.0
+      - coverage
     virtualenv: "{{ virtualenv }}"
     virtualenv_command: "{{ virtualenv_command }}"
-    virtualenv_site_packages: yes
+    virtualenv_site_packages: no
 
 - include_tasks: older_openshift_fail.yml
   vars:
@@ -68,10 +71,11 @@
 
 - pip:
     name:
-      - openshift==0.8.1
+      - openshift==0.8.8
+      - coverage
     virtualenv: "{{ virtualenv }}"
     virtualenv_command: "{{ virtualenv_command }}"
-    virtualenv_site_packages: yes
+    virtualenv_site_packages: no
 
 - include_tasks: full_test.yml
   vars:

test/integration/targets/k8s/tasks/older_openshift_fail.yml

@@ -25,9 +25,6 @@
           - "'Failed to import the required Python library (openshift >= 0.7.2)' in k8s_append_hash.msg"
           - "'. This is required for append_hash.' in k8s_append_hash.msg"
 
-    # merge_type
-    - include_tasks: crd.yml
-
     # validate
     - name: attempt to use validate with older openshift
       k8s:

test/integration/targets/k8s/tasks/validate_not_installed.yml

@@ -1,3 +1,9 @@
+  - python_requirements_facts:
+      dependencies:
+        - openshift
+        - kubernetes
+        - kubernetes-validate
+
   - k8s:
       definition:
         apiVersion: v1

test/integration/targets/k8s/tasks/waiter.yml

@@ -6,6 +6,7 @@
 - block:
     - set_fact:
         wait_namespace: wait
+
     - name: ensure namespace exists
       k8s:
         definition:
@@ -20,14 +21,14 @@
           apiVersion: v1
           kind: Pod
           metadata:
-            name: "{{ wait_pod_name }}"
+            name: "{{ k8s_pod_name }}"
             namespace: "{{ wait_namespace }}"
-          spec: "{{ wait_pod_spec }}"
+          spec: "{{ k8s_pod_spec }}"
         wait: yes
       vars:
-        wait_pod_name: wait-pod
-        wait_pod_image: alpine:3.8
-        wait_pod_command:
+        k8s_pod_name: wait-pod
+        k8s_pod_image: alpine:3.8
+        k8s_pod_command:
           - sleep
           - "10000"
       register: wait_pod
@@ -49,13 +50,13 @@
           spec:
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
-            template: "{{ wait_pod_template }}"
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
         wait_timeout: 180
       vars:
-        wait_pod_name: wait-ds
-        wait_pod_image: gcr.io/kuar-demo/kuard-amd64:1
+        k8s_pod_name: wait-ds
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:1
       register: ds
 
     - name: check that daemonset wait worked
@@ -74,15 +75,15 @@
           spec:
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
+                app: "{{ k8s_pod_name }}"
             updateStrategy:
               type: RollingUpdate
-            template: "{{ wait_pod_template }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
         wait_timeout: 180
       vars:
-        wait_pod_name: wait-ds
-        wait_pod_image: gcr.io/kuar-demo/kuard-amd64:2
+        k8s_pod_name: wait-ds
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:2
       register: update_ds_check_mode
 
     - name: check that check_mode returned changed
@@ -101,15 +102,15 @@
           spec:
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
+                app: "{{ k8s_pod_name }}"
             updateStrategy:
               type: RollingUpdate
-            template: "{{ wait_pod_template }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
         wait_timeout: 180
       vars:
-        wait_pod_name: wait-ds
-        wait_pod_image: gcr.io/kuar-demo/kuard-amd64:2
+        k8s_pod_name: wait-ds
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:3
       register: ds
 
     - name: get updated pods
@@ -125,7 +126,7 @@
       assert:
         that:
           - ds.result.status.currentNumberScheduled == ds.result.status.desiredNumberScheduled
-          - updated_ds_pods.resources[0].spec.containers[0].image.endswith(":2")
+          - updated_ds_pods.resources[0].spec.containers[0].image.endswith(":3")
 
     - name: add a crashing pod
       k8s:
@@ -133,15 +134,15 @@
           apiVersion: v1
           kind: Pod
           metadata:
-            name: "{{ wait_pod_name }}"
+            name: "{{ k8s_pod_name }}"
             namespace: "{{ wait_namespace }}"
-          spec: "{{ wait_pod_spec }}"
+          spec: "{{ k8s_pod_spec }}"
         wait: yes
         wait_timeout: 30
       vars:
-        wait_pod_name: wait-crash-pod
-        wait_pod_image: alpine:3.8
-        wait_pod_command:
+        k8s_pod_name: wait-crash-pod
+        k8s_pod_image: alpine:3.8
+        k8s_pod_command:
           - /bin/false
       register: crash_pod
       ignore_errors: yes
@@ -157,14 +158,14 @@
           apiVersion: v1
           kind: Pod
           metadata:
-            name: "{{ wait_pod_name }}"
+            name: "{{ k8s_pod_name }}"
             namespace: "{{ wait_namespace }}"
-          spec: "{{ wait_pod_spec }}"
+          spec: "{{ k8s_pod_spec }}"
         wait: yes
         wait_timeout: 30
       vars:
-        wait_pod_name: wait-no-image-pod
-        wait_pod_image: i_made_this_up:and_this_too
+        k8s_pod_name: wait-no-image-pod
+        k8s_pod_image: i_made_this_up:and_this_too
       register: no_image_pod
       ignore_errors: yes
 
@@ -185,13 +186,13 @@
             replicas: 3
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
-            template: "{{ wait_pod_template }}"
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
       vars:
-        wait_pod_name: wait-deploy
-        wait_pod_image: gcr.io/kuar-demo/kuard-amd64:1
-        wait_pod_ports:
+        k8s_pod_name: wait-deploy
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:1
+        k8s_pod_ports:
           - containerPort: 8080
             name: http
             protocol: TCP
@@ -215,13 +216,13 @@
             replicas: 3
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
-            template: "{{ wait_pod_template }}"
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
       vars:
-        wait_pod_name: wait-deploy
-        wait_pod_image: gcr.io/kuar-demo/kuard-amd64:2
-        wait_pod_ports:
+        k8s_pod_name: wait-deploy
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:2
+        k8s_pod_ports:
           - containerPort: 8080
             name: http
             protocol: TCP
@@ -277,14 +278,14 @@
             namespace: "{{ wait_namespace }}"
           spec:
             selector:
-              app: "{{ wait_pod_name }}"
+              app: "{{ k8s_pod_name }}"
             ports:
               - port: 8080
                 targetPort: 8080
                 protocol: TCP
         wait: yes
       vars:
-        wait_pod_name: wait-deploy
+        k8s_pod_name: wait-deploy
       register: service
 
     - name: assert that waiting for service works
@@ -304,13 +305,13 @@
             replicas: 3
             selector:
               matchLabels:
-                app: "{{ wait_pod_name }}"
-            template: "{{ wait_pod_template }}"
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
         wait: yes
       vars:
-        wait_pod_name: wait-crash-deploy
-        wait_pod_image: alpine:3.8
-        wait_pod_command:
+        k8s_pod_name: wait-crash-deploy
+        k8s_pod_image: alpine:3.8
+        k8s_pod_command:
           - /bin/false
       register: wait_crash_deploy
       ignore_errors: yes