mirror of https://github.com/ansible/ansible.git
Add wait functionality to k8s module (#47493)
Provide wait and wait_timeout parameters and wait for certain resource kinds to become available.pull/48603/head
Will Thames
6 years ago
committed by
John R Barker
parent
3a339695a8
commit
4e1e9589b5
@ -0,0 +1,2 @@
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minor_changes:
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- k8s - add ability to wait for some kinds of Kubernetes resources to be in the desired state
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@ -0,0 +1,23 @@
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Wait tests
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----------
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wait tests require at least one node, and don't work on the normal k8s
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openshift-origin container as provided by ansible-test --docker -v k8s
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minikube, Kubernetes from Docker or any other Kubernetes service will
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suffice.
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If kubectl is already using the right config file and context, you can
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just do
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```
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cd test/integration/targets/k8s
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./runme.sh -vv
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```
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otherwise set one or both of `K8S_AUTH_KUBECONFIG` and `K8S_AUTH_CONTEXT`
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and use the same command
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@ -1 +1,32 @@
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recreate_crd_default_merge_expectation: recreate_crd is not failed
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wait_pod_metadata:
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labels:
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app: "{{ wait_pod_name }}"
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wait_pod_spec:
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containers:
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- image: "{{ wait_pod_image }}"
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imagePullPolicy: Always
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name: "{{ wait_pod_name }}"
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command: "{{ wait_pod_command }}"
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readinessProbe:
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initialDelaySeconds: 15
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exec:
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command:
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- /bin/true
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resources:
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limits:
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cpu: "100m"
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memory: "100Mi"
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ports: "{{ wait_pod_ports }}"
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wait_pod_command: []
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wait_pod_ports: []
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wait_pod_template:
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metadata: "{{ wait_pod_metadata }}"
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spec: "{{ wait_pod_spec }}"
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k8s_openshift: yes
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@ -0,0 +1,60 @@
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# OpenShift Resources
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- name: Create a project
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k8s:
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name: testing
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kind: project
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api_version: v1
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register: output
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- name: show output
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debug:
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var: output
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- name: Create deployment config
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k8s:
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state: present
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inline: &dc
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apiVersion: v1
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kind: DeploymentConfig
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metadata:
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name: elastic
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labels:
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app: galaxy
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service: elastic
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namespace: testing
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spec:
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template:
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metadata:
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labels:
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app: galaxy
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service: elastic
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spec:
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containers:
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- name: elastic
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volumeMounts:
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- mountPath: /usr/share/elasticsearch/data
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name: elastic-volume
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command: ['elasticsearch']
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image: 'ansible/galaxy-elasticsearch:2.4.6'
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volumes:
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- name: elastic-volume
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persistentVolumeClaim:
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claimName: elastic-volume
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replicas: 1
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strategy:
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type: Rolling
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register: output
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- name: Show output
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debug:
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var: output
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- name: Create deployment config again
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k8s:
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state: present
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inline: *dc
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register: output
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- name: DC creation should be idempotent
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assert:
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that: not output.changed
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@ -0,0 +1,295 @@
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- name: ensure that there are actually some nodes
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k8s_facts:
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kind: Node
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register: nodes
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- block:
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- set_fact:
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wait_namespace: wait
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- name: ensure namespace exists
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k8s:
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definition:
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apiVersion: v1
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kind: Namespace
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metadata:
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name: "{{ wait_namespace }}"
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- name: add a simple pod
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k8s:
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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: "{{ wait_pod_name }}"
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namespace: "{{ wait_namespace }}"
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spec: "{{ wait_pod_spec }}"
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wait: yes
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vars:
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wait_pod_name: wait-pod
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wait_pod_image: alpine:3.8
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wait_pod_command:
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- sleep
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- "10000"
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register: wait_pod
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ignore_errors: yes
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- name: assert that pod creation succeeded
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assert:
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that:
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- wait_pod is successful
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- name: add a daemonset
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k8s:
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definition:
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apiVersion: extensions/v1beta1
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kind: DaemonSet
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metadata:
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name: wait-daemonset
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namespace: "{{ wait_namespace }}"
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spec:
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selector:
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matchLabels:
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app: "{{ wait_pod_name }}"
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template: "{{ wait_pod_template }}"
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wait: yes
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wait_timeout: 180
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vars:
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wait_pod_name: wait-ds
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wait_pod_image: gcr.io/kuar-demo/kuard-amd64:1
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register: ds
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- name: check that daemonset wait worked
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assert:
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that:
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- ds.result.status.currentNumberScheduled == ds.result.status.desiredNumberScheduled
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- name: update a daemonset
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k8s:
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definition:
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apiVersion: extensions/v1beta1
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kind: DaemonSet
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metadata:
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name: wait-daemonset
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namespace: "{{ wait_namespace }}"
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spec:
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selector:
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matchLabels:
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app: "{{ wait_pod_name }}"
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updateStrategy:
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type: RollingUpdate
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template: "{{ wait_pod_template }}"
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wait: yes
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wait_timeout: 180
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vars:
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wait_pod_name: wait-ds
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wait_pod_image: gcr.io/kuar-demo/kuard-amd64:2
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register: ds
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- name: get updated pods
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k8s_facts:
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api_version: v1
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kind: Pod
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namespace: "{{ wait_namespace }}"
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label_selectors:
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- app=wait-ds
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register: updated_ds_pods
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- name: check that daemonset wait worked
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assert:
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that:
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- ds.result.status.currentNumberScheduled == ds.result.status.desiredNumberScheduled
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- updated_ds_pods.resources[0].spec.containers[0].image.endswith(":2")
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- name: add a crashing pod
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k8s:
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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: "{{ wait_pod_name }}"
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namespace: "{{ wait_namespace }}"
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spec: "{{ wait_pod_spec }}"
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wait: yes
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wait_timeout: 30
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vars:
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wait_pod_name: wait-crash-pod
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wait_pod_image: alpine:3.8
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wait_pod_command:
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- /bin/false
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register: crash_pod
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ignore_errors: yes
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- name: check that task failed
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assert:
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that:
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- crash_pod is failed
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- name: use a non-existent image
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k8s:
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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: "{{ wait_pod_name }}"
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namespace: "{{ wait_namespace }}"
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spec: "{{ wait_pod_spec }}"
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wait: yes
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wait_timeout: 30
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vars:
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wait_pod_name: wait-no-image-pod
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wait_pod_image: i_made_this_up:and_this_too
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register: no_image_pod
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ignore_errors: yes
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- name: check that task failed
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assert:
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that:
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- no_image_pod is failed
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- name: add a deployment
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k8s:
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definition:
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: wait-deploy
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namespace: "{{ wait_namespace }}"
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: "{{ wait_pod_name }}"
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template: "{{ wait_pod_template }}"
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wait: yes
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vars:
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wait_pod_name: wait-deploy
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wait_pod_image: gcr.io/kuar-demo/kuard-amd64:1
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wait_pod_ports:
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- containerPort: 8080
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name: http
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protocol: TCP
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register: deploy
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- name: check that deployment wait worked
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assert:
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that:
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- deploy.result.status.availableReplicas == deploy.result.status.replicas
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- name: update a deployment
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k8s:
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definition:
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: wait-deploy
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namespace: "{{ wait_namespace }}"
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: "{{ wait_pod_name }}"
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template: "{{ wait_pod_template }}"
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wait: yes
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vars:
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wait_pod_name: wait-deploy
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wait_pod_image: gcr.io/kuar-demo/kuard-amd64:2
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wait_pod_ports:
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- containerPort: 8080
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name: http
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protocol: TCP
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register: update_deploy
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- name: get updated pods
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k8s_facts:
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api_version: v1
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kind: Pod
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namespace: "{{ wait_namespace }}"
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label_selectors:
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- app=wait-deploy
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register: updated_deploy_pods
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- name: check that deployment wait worked
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assert:
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that:
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- deploy.result.status.availableReplicas == deploy.result.status.replicas
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- updated_deploy_pods.resources[0].spec.containers[0].image.endswith(":2")
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- name: add a service based on the deployment
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k8s:
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definition:
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apiVersion: v1
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kind: Service
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metadata:
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name: wait-svc
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namespace: "{{ wait_namespace }}"
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spec:
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selector:
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app: "{{ wait_pod_name }}"
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ports:
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- port: 8080
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targetPort: 8080
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protocol: TCP
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wait: yes
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vars:
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wait_pod_name: wait-deploy
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register: service
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- name: assert that waiting for service works
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assert:
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that:
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- service is successful
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- name: add a crashing deployment
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k8s:
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definition:
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: wait-crash-deploy
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namespace: "{{ wait_namespace }}"
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: "{{ wait_pod_name }}"
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template: "{{ wait_pod_template }}"
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wait: yes
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vars:
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wait_pod_name: wait-crash-deploy
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wait_pod_image: alpine:3.8
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wait_pod_command:
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- /bin/false
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register: wait_crash_deploy
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ignore_errors: yes
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- name: check that task failed
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assert:
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that:
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- wait_crash_deploy is failed
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- name: remove Pod with very short timeout
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k8s:
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api_version: v1
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kind: Pod
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name: wait-pod
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namespace: "{{ wait_namespace }}"
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state: absent
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wait: yes
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wait_timeout: 5
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ignore_errors: yes
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register: short_wait_remove_pod
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- name: check that task failed
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assert:
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that:
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- short_wait_remove_pod is failed
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always:
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- name: remove namespace
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k8s:
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kind: Namespace
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name: "{{ wait_namespace }}"
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state: absent
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when: (nodes.resources | length) > 0
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