Added examples for Jobs and Hooks

ratanboddu · ratanboddu · commit 7616bdd3f083 · 2019-05-24T21:33:25.000+05:30
diff --git a/examples/create_job.py b/examples/create_job.py
@@ -0,0 +1,56 @@
+""" Creating a Job in a specific namespace"""
+
+from kubernetes import client, config
+
+# Fetching and loading Kubernetes Information
+config.load_kube_config()
+
+extension = client.BatchV1Api()
+
+# Volume
+volume = client.V1Volume(
+      name="test-volume",
+      empty_dir=client.V1EmptyDirVolumeSource(medium=""))
+
+# Container
+container = client.V1Container(
+  name="jobtest",
+  image="nginx:1.7.9",
+  image_pull_policy="IfNotPresent",
+  ports=[client.V1ContainerPort(container_port=80)],
+  volume_mounts=[client.V1VolumeMount(name=volume.name, mount_path="/kube-example")]
+)
+
+# Init-Container
+init_container = client.V1Container(
+  name="init-container",
+  image="alpine",
+  image_pull_policy="IfNotPresent",
+  command=[
+          "touch kube-test.txt"
+          ],
+  volume_mounts=[client.V1VolumeMount(name=volume.name, mount_path="/kube-example")]
+)
+
+# Template
+template = client.V1PodTemplateSpec(
+    metadata=client.V1ObjectMeta(labels={"app": "jobtest"}),
+    spec=client.V1PodSpec(init_containers=[init_container], containers=[container], volumes=[volume], restart_policy="Never")
+)
+
+# Spec
+spec_pod = client.V1JobSpec(
+    ttl_seconds_after_finished=0,
+    template=template
+)
+
+# job
+job = client.V1Job(
+    kind="Job",
+    metadata=client.V1ObjectMeta(name="jobtest"),
+    spec=spec_pod
+)
+
+extension.create_namespaced_job(namespace="kube-client", body=job)
+
+
diff --git a/examples/post_stop_hook.py b/examples/post_stop_hook.py
@@ -0,0 +1,52 @@
+"""Example for Post Start Hook """
+
+from kubernetes import client, config
+
+# Fetching and loading Kubernetes Information
+config.load_kube_config()
+
+extension = client.ExtensionsV1beta1Api()
+
+# Container
+container = client.V1Container(
+  name="hooktest",
+  image="nginx:1.7.9",
+  image_pull_policy="IfNotPresent",
+  ports=[client.V1ContainerPort(container_port=80)],
+
+  lifecycle=client.V1Lifecycle(
+    post_start=client.V1Handler(
+       _exec=client.V1ExecAction(
+           command=[
+                 "touch kube-test.txt"
+                   ]
+
+              )#closing for V1ExecAction
+
+          )#closing for V1Handler
+
+     )#closing for V1Lifecycle
+)
+
+# Template
+template = client.V1PodTemplateSpec(
+  metadata=client.V1ObjectMeta(labels={"app": "hooktest"}),
+  spec=client.V1PodSpec(containers=[container]))
+
+
+# Spec
+spec = client.ExtensionsV1beta1DeploymentSpec(
+  replicas=1,
+  template=template)
+
+#Deployment
+deployment = client.ExtensionsV1beta1Deployment(
+  api_version="extensions/v1beta1",
+  kind="Deployment",
+  metadata=client.V1ObjectMeta(name="hooktest-deployment"),
+  spec=spec)
+
+# Creation of the Deployment in specified namespace
+extension.create_namespaced_deployment(namespace="kube-client", body=deployment)
+
+
diff --git a/examples/pre_stop_hook.py b/examples/pre_stop_hook.py
@@ -0,0 +1,55 @@
+"""Example for Pre Stop Hook """
+
+from kubernetes import client, config
+
+# Fetching and loading Kubernetes Information
+config.load_kube_config()
+# For incluster details
+# config.incluster_kube_config()
+
+extension = client.ExtensionsV1beta1Api()
+
+# Container
+container = client.V1Container(
+  name="nginx",
+  image="nginx:1.7.9",
+  image_pull_policy="IfNotPresent",
+  ports=[client.V1ContainerPort(container_port=80)],
+
+  lifecycle=client.V1Lifecycle(
+    pre_stop=client.V1Handler(
+       _exec=client.V1ExecAction(
+           command=[
+                    # Commands to be executed in the prestop hook
+                    "touch kube-test.txt"
+                   ]
+
+              )#closing for V1ExecAction
+
+          )#closing for V1Handler
+
+     )#closing for V1Lifecycle
+)
+
+# Template
+template = client.V1PodTemplateSpec(
+  metadata=client.V1ObjectMeta(labels={"app": "nginx"}),
+  spec=client.V1PodSpec(containers=[container]))
+
+
+# Spec
+spec = client.ExtensionsV1beta1DeploymentSpec(
+  replicas=1,
+  template=template)
+
+#Deployment
+deployment = client.ExtensionsV1beta1Deployment(
+  api_version="extensions/v1beta1",
+  kind="Deployment",
+  metadata=client.V1ObjectMeta(name="nginx-deployment"),
+  spec=spec)
+
+# Creation of the Deployment in specified namespace
+extension.create_namespaced_deployment(namespace="kube-client", body=deployment)
+
+
