Merge "Update a daemonset using updateStrategy type: RollingUpdate"
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@ -30,6 +30,9 @@ class TestDaemonsetsUpdates():
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to_nginx_image = 'nginx:1.11'
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def get_nginx_spec(self):
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"""Create specification for DaemonSet with Nginx containers
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:return: nested dict
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"""
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return {
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'apiVersion': 'extensions/v1beta1',
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'kind': 'DaemonSet',
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@ -56,23 +59,37 @@ class TestDaemonsetsUpdates():
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}
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def get_nginx_pods(self, k8sclient):
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"""Return the nginx pods
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:param: k8sclient: kubernetes api client
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:return: list of pods with nginx containers
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"""
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spec = self.get_nginx_spec()
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return [x for x in k8sclient.pods.list()
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if spec['metadata']['name'] in x.name]
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def get_nginx_ds(self, k8sclient):
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"""Return the nginx DaemonSets
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:param k8sclient: kubernetes api client
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:return: list of DaemonSets with pods with nginx containers
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"""
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spec = self.get_nginx_spec()
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return [x for x in k8sclient.daemonsets.list()
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if spec['metadata']['name'] in x.name]
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def wait_nginx_pods_ready(self, k8sclient):
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"""Wait until the nginx pods are ready"""
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"""Wait until the nginx pods are ready
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:param: k8sclient: kubernetes api client
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:return: None
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"""
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nginx_pods = self.get_nginx_pods(k8sclient)
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for pod in nginx_pods:
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pod.wait_running(timeout=60)
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def delete_nginx_pods(self, k8sclient):
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"""Delete the nginx pods"""
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"""Delete the nginx pods
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:param: k8sclient: kubernetes api client
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:return: None
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"""
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nginx_pods = self.get_nginx_pods(k8sclient)
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for pod in nginx_pods:
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k8sclient.pods.delete(body=pod.spec, name=pod.name)
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@ -80,6 +97,11 @@ class TestDaemonsetsUpdates():
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x.name for x in self.get_nginx_pods(k8sclient)])
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def check_nginx_pods_image(self, k8sclient, nginx_image):
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"""Check nginx pods image version
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:param: k8sclient: kubernetes api client,
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:param: nginx_image: version of nginx_image to compare
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:return: None
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"""
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nginx_pods = self.get_nginx_pods(k8sclient)
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for pod in nginx_pods:
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pod_image = pod.status.container_statuses[0].image
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@ -88,6 +110,11 @@ class TestDaemonsetsUpdates():
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.format(pod.name, pod_image, nginx_image))
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def check_nginx_ds_image(self, k8sclient, nginx_image):
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"""Check nginx DaemonSets version
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:param: k8sclient: kubernetes api client,
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:param: nginx_image: version of nginx_image to compare
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:return: None
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"""
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nginx_daemonsets = self.get_nginx_ds(k8sclient)
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for nginx_ds in nginx_daemonsets:
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nginx_ds_image = nginx_ds.spec.template.spec.containers[0].image
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@ -98,8 +125,7 @@ class TestDaemonsetsUpdates():
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@pytest.mark.revert_snapshot(ext.SNAPSHOT.k8s_deployed)
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@pytest.mark.fail_snapshot
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@pytest.mark.snapshot_needed
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def test_daemonset_rollingupdate_noop(self, underlay, k8scluster, config,
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show_step):
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def test_daemonset_rollingupdate_noop(self, k8scluster, show_step):
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"""Update a daemonset using updateStrategy type: Noop
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Scenario:
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@ -176,3 +202,71 @@ class TestDaemonsetsUpdates():
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show_step(10)
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# Pods should have the new image version
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self.check_nginx_pods_image(k8sclient, self.to_nginx_image)
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@pytest.mark.revert_snapshot(ext.SNAPSHOT.k8s_deployed)
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@pytest.mark.fail_snapshot
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@pytest.mark.snapshot_needed
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def test_daemonset_rollingupdate(self, k8scluster, show_step):
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"""Update a daemonset using updateStrategy type: RollingUpdate
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Scenario:
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1. Deploy k8s using fuel-ccp-installer
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2. Create a DaemonSet for nginx with image version 1_10 and
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update strategy RollingUpdate
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3. Wait until nginx pods are created and become 'ready'
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4. Check that the image version in the nginx pods is 1_10
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Check that the image version in the nginx daemonset is 1_10
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5. Change nginx image version to 1_11 using YAML
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6. Wait for 10 seconds (needs to check that there were
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no auto updates of the nginx pods)
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7. Check that the image version in the nginx daemonset
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is updated to 1_11
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Wait for ~120 sec that the image version in the nginx pods
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is changed to 1_11
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Duration: 3000 seconds
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"""
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# STEP #1
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show_step(1)
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k8sclient = k8scluster.api
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assert k8sclient.nodes.list() is not None, "Can not get nodes list"
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# STEP #2
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show_step(2)
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nginx_spec = self.get_nginx_spec()
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nginx_spec['spec']['template']['spec']['containers'][0][
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'image'] = self.from_nginx_image
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k8sclient.daemonsets.create(body=nginx_spec)
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# STEP #3
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show_step(3)
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time.sleep(3)
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self.wait_nginx_pods_ready(k8sclient)
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# STEP #4
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show_step(4)
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self.check_nginx_pods_image(k8sclient, self.from_nginx_image)
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self.check_nginx_ds_image(k8sclient, self.from_nginx_image)
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# STEP #5
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show_step(5)
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nginx_spec['spec']['template']['spec']['containers'][0][
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'image'] = self.to_nginx_image
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k8sclient.daemonsets.update(body=nginx_spec,
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name=nginx_spec['metadata']['name'])
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# STEP #6
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show_step(6)
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time.sleep(10)
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# STEP #7
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show_step(7)
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# DaemonSet should have new image version
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self.check_nginx_ds_image(k8sclient, self.to_nginx_image)
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# Pods should have new image version
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helpers.wait_pass(
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lambda: self.check_nginx_pods_image(
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k8sclient,
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self.to_nginx_image),
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timeout=2 * 60)
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