How to start a Pod

In this notebook, we show you how to create a single container Pod.

Start by importing the Kubernetes module



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from kubernetes import client, config

If you are using a proxy, you can use the client Configuration to setup the host that the client should use. Otherwise read the kubeconfig file.



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config.load_incluster_config()

Pods are a stable resource in the V1 API group. Instantiate a client for that API group endpoint.



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v1=client.CoreV1Api()



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pod=client.V1Pod()
spec=client.V1PodSpec()
pod.metadata=client.V1ObjectMeta(name="busybox")

In this example, we only start one container in the Pod. The container is an instnace of the V1Container class.



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container=client.V1Container()
container.image="busybox"
container.args=["sleep", "3600"]
container.name="busybox"

The specification of the Pod is made of a single container in its list.



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spec.containers = [container]
pod.spec = spec

Get existing list of Pods, before the creation of the new Pod.



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ret = v1.list_namespaced_pod(namespace="default")
for i in ret.items:
    print("%s  %s  %s" % (i.status.pod_ip, i.metadata.namespace, i.metadata.name))

You are now ready to create the Pod.



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v1.create_namespaced_pod(namespace="default",body=pod)

Get list of Pods, after the creation of the new Pod. Note the newly created pod with name "busybox"



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ret = v1.list_namespaced_pod(namespace="default")
for i in ret.items:
    print("%s  %s  %s" % (i.status.pod_ip, i.metadata.namespace, i.metadata.name))

Delete the Pod

You refer to the Pod by name, you need to add its namespace and pass some delete options.



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v1.delete_namespaced_pod(name="busybox", namespace="default", body=client.V1DeleteOptions())



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