def test_hpa_update(self):
c_nginx = _utils.create_container(name="yo", image="nginx:latest")
deploy = _utils.create_deployment(name="yo")
deploy.add_container(c_nginx)
deploy.desired_replicas = 3
hpa = _utils.create_hpa(name="yo")
hpa.min_replicas = 1
hpa.max_replicas = 10
hpa.cpu_percent = 50
hpa.scale_ref = ("Deployment", "yo")
if _utils.is_reachable(hpa.config):
deploy.create()
hpa.create()
hpa.get()
self.assertEqual(50, hpa.cpu_percent)
hpa.cpu_percent = 70
hpa.min_replicas = 3
hpa.max_replicas = 5
hpa.update()
hpa.get()
self.assertEqual(70, hpa.cpu_percent)
self.assertEqual(3, hpa.min_replicas)
self.assertEqual(5, hpa.max_replicas)
def test_hpa_walkthrough(self):
"""
https://kubernetes.io/docs/user-guide/horizontal-pod-autoscaling/walkthrough/
https://github.com/kubernetes/community/blob/master/contributors/design-proposals/horizontal-pod-autoscaler.md
"""
k8s_dep = _utils.create_deployment(name="php-apache")
k8s_dep.model = Deployment(_constants.hpa_example_deployment())
k8s_svc = _utils.create_service(name="php-apache")
k8s_svc.model = Service(_constants.hpa_example_service())
k8s_hpa = _utils.create_hpa(name="php-apache")
k8s_hpa.model = HorizontalPodAutoscaler(
_constants.hpa_example_autoscaler())
if _utils.is_reachable(k8s_hpa.config):
# //--- Step One: Run & expose php-apache server
k8s_dep.create()
k8s_svc.create()
# // --- Step Two: Create Horizontal Pod Autoscaler
k8s_hpa.create()
# // --- Step Three: Increase Load
# $ kubectl run -i --tty load-generator --image=busybox /bin/sh
# $ while true; do wget -q -O- http://php-apache.default.svc.cluster.local; done
# watch 'kubectl config current-context; echo; kubectl get deployments; echo; kubectl get replicasets; echo; kubectl get pods; echo; kubectl top nodes; echo; kubectl top pods'
time.sleep(10) # wait for 10 secs; set a breakpoint if you need.
def test_from_json(self):
cfg = _utils.create_config()
hpa = _utils.create_hpa(config=cfg, name="yo")
d = hpa.model.serialize()
j = json.dumps(d)
k8s = K8sHorizontalPodAutoscaler.from_json(j, cfg)
self.assertIsInstance(k8s, K8sHorizontalPodAutoscaler)