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Move integration test suite from molecule to ansible-test (#392)
Move integration test suite from molecule to ansible-test SUMMARY molecule has been replaced with ansible-test some test cases have been updated k8s_apply : remove duplicated tasks increasing the running time of the test helm: use different namespaces for different test cases in order to wait for the namespace deletion before moving to the next test. all: remove wait: yes at the end of each test when deleting namespace, the role used to create namespace will ensure that it is deleted before if existing. ISSUE TYPE Feature Pull Request COMPONENT NAME integration testing Reviewed-by: Mike Graves <mgraves@redhat.com> Reviewed-by: Gonéri Le Bouder <goneri@lebouder.net> Reviewed-by: None <None>
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301
tests/integration/targets/k8s_drain/tasks/main.yml
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301
tests/integration/targets/k8s_drain/tasks/main.yml
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---
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- block:
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- name: Set common facts
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set_fact:
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drain_daemonset_name: "promotheus-dset"
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drain_pod_name: "pod-drain"
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drain_deployment_emptydir_name: "deployment-emptydir-drain"
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# It seems that the default ServiceAccount can take a bit to be created
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# right after a cluster is brought up. This can lead to the ServiceAccount
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# admission controller rejecting a Pod creation request because the
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# ServiceAccount does not yet exist.
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- name: Wait for default serviceaccount to be created
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k8s_info:
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kind: ServiceAccount
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name: default
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namespace: "{{ test_namespace }}"
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wait: yes
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- name: list cluster nodes
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k8s_info:
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kind: node
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register: nodes
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- name: Select uncordoned nodes
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set_fact:
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uncordoned_nodes: "{{ nodes.resources | selectattr('spec.unschedulable', 'undefined') | map(attribute='metadata.name') | list}}"
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- name: Assert that at least one node is schedulable
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assert:
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that:
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- uncordoned_nodes | length > 0
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- name: select node to drain
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set_fact:
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node_to_drain: '{{ uncordoned_nodes[0] }}'
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- name: Deploy daemonset on cluster
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k8s:
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namespace: '{{ test_namespace }}'
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definition:
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apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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name: '{{ drain_daemonset_name }}'
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spec:
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affinity:
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nodeAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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nodeSelectorTerms:
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- matchFields:
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- key: metadata.name
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operator: In
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values:
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- '{{ node_to_drain }}'
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selector:
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matchLabels:
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name: prometheus-exporter
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template:
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metadata:
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labels:
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name: prometheus-exporter
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spec:
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containers:
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- name: prometheus
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image: prom/node-exporter
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ports:
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- containerPort: 80
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- name: Create Pods not managed by ReplicationController, ReplicaSet, Job, DaemonSet or StatefulSet.
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k8s:
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namespace: '{{ test_namespace }}'
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wait: yes
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wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
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definition:
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apiVersion: v1
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kind: Pod
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metadata:
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name: '{{ drain_pod_name }}'
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spec:
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affinity:
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nodeAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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nodeSelectorTerms:
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- matchFields:
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- key: metadata.name
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operator: In
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values:
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- '{{ node_to_drain }}'
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containers:
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- name: c0
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image: busybox
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command:
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- /bin/sh
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- -c
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- while true;do date;sleep 5; done
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- name: Create Deployment with an emptyDir volume.
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k8s:
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namespace: '{{ test_namespace }}'
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wait: yes
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wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
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definition:
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: '{{ drain_deployment_emptydir_name }}'
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spec:
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replicas: 1
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selector:
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matchLabels:
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drain: emptyDir
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template:
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metadata:
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labels:
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drain: emptyDir
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spec:
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metadata:
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labels:
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drain: emptyDir
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affinity:
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nodeAffinity:
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requiredDuringSchedulingIgnoredDuringExecution:
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nodeSelectorTerms:
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- matchFields:
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- key: metadata.name
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operator: In
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values:
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- '{{ node_to_drain }}'
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containers:
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- name: c0
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image: busybox
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command:
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- /bin/sh
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- -c
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- while true;do date;sleep 5; done
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volumeMounts:
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- mountPath: /emptydir
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name: emptydir
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volumes:
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- name: emptydir
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emptyDir: {}
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- name: Register emptyDir Pod name
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k8s_info:
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namespace: '{{ test_namespace }}'
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kind: Pod
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label_selectors:
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- "drain = emptyDir"
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register: emptydir_pod_result
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failed_when:
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- emptydir_pod_result.resources | length != 1
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- name: Cordon node
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k8s_drain:
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state: cordon
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name: '{{ node_to_drain }}'
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register: cordon
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- name: assert that cordon is changed
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assert:
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that:
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- cordon is changed
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- name: Test cordon idempotency
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k8s_drain:
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state: cordon
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name: '{{ node_to_drain }}'
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register: cordon
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- name: assert that cordon is not changed
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assert:
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that:
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- cordon is not changed
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- name: Get pods
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k8s_info:
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kind: Pod
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namespace: '{{ test_namespace }}'
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register: Pod
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- name: assert that pods are running on cordoned node
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assert:
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that:
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- "{{ Pod.resources | selectattr('status.phase', 'equalto', 'Running') | selectattr('spec.nodeName', 'equalto', node_to_drain) | list | length > 0 }}"
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- name: Uncordon node
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k8s_drain:
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state: uncordon
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name: '{{ node_to_drain }}'
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register: uncordon
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- name: assert that uncordon is changed
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assert:
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that:
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- uncordon is changed
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- name: Test uncordon idempotency
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k8s_drain:
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state: uncordon
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name: '{{ node_to_drain }}'
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register: uncordon
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- name: assert that uncordon is not changed
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assert:
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that:
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- uncordon is not changed
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- name: Drain node
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k8s_drain:
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state: drain
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name: '{{ node_to_drain }}'
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ignore_errors: true
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register: drain_result
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- name: assert that drain failed due to DaemonSet managed Pods
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assert:
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that:
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- drain_result is failed
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- '"cannot delete DaemonSet-managed Pods" in drain_result.msg'
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- '"cannot delete Pods not managed by ReplicationController, ReplicaSet, Job, DaemonSet or StatefulSet" in drain_result.msg'
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- '"cannot delete Pods with local storage" in drain_result.msg'
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- name: Drain node using ignore_daemonsets, force, and delete_emptydir_data options
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k8s_drain:
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state: drain
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name: '{{ node_to_drain }}'
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delete_options:
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force: true
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ignore_daemonsets: true
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delete_emptydir_data: true
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wait_timeout: 0
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register: drain_result
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- name: assert that node has been drained
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assert:
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that:
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- drain_result is changed
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- '"node {{ node_to_drain }} marked unschedulable." in drain_result.result'
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- name: assert that unmanaged pod were deleted
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k8s_info:
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namespace: '{{ test_namespace }}'
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kind: Pod
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name: '{{ drain_pod_name }}'
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register: _result
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failed_when: _result.resources
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- name: assert that emptyDir pod was deleted
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k8s_info:
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namespace: '{{ test_namespace }}'
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kind: Pod
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name: "{{ emptydir_pod_result.resources[0].metadata.name }}"
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register: _result
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failed_when: _result.resources | length != 0
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- name: Test drain idempotency
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k8s_drain:
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state: drain
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name: '{{ node_to_drain }}'
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delete_options:
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force: true
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ignore_daemonsets: true
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delete_emptydir_data: true
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register: drain_result
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- name: Check idempotency
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assert:
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that:
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- drain_result is not changed
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- name: Get DaemonSet
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k8s_info:
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kind: DaemonSet
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namespace: '{{ test_namespace }}'
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name: '{{ drain_daemonset_name }}'
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register: dset_result
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- name: assert that daemonset managed pods were not removed
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assert:
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that:
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- dset_result.resources | list | length > 0
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- name: Uncordon node
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k8s_drain:
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state: uncordon
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name: '{{ node_to_drain }}'
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always:
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- name: Uncordon node
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k8s_drain:
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state: uncordon
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name: '{{ node_to_drain }}'
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when: node_to_drain is defined
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ignore_errors: true
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- name: delete namespace
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k8s:
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state: absent
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kind: namespace
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name: '{{ test_namespace }}'
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