Busk at 00:36, 3 July 2023

2023-07-03T00:36:05Z

Busk: Created page with "https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes"

2023-07-03T00:33:57Z

Created page with "https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes"

New page

https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes

← Older revision		Revision as of 00:36, 3 July 2023
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	https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes		https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes
		+
		+	```
		+	for the reason.
		+
		+	Kubernetes has some workloads (those contain PodTemplate in their manifest). These are:
		+
		+	Pods
		+	Controllers (basically Pod controllers)
		+	ReplicationController
		+	ReplicaSet
		+	Deployment
		+	StatefulSet
		+	DaemonSet
		+	Job
		+	CronJob
		+	See, who controls whom:
		+
		+	ReplicationController -> Pod(s)
		+	ReplicaSet -> Pod(s)
		+	Deployment -> ReplicaSet(s) -> Pod(s)
		+	StatefulSet -> Pod(s)
		+	DaemonSet -> Pod(s)
		+	Job -> Pod
		+	CronJob -> Job(s) -> Pod
		+	a -> b means a creates and controls b and the value of field .metadata.ownerReference in b's manifest is the reference of a. For example,
		+
		+	apiVersion: v1
		+	kind: Pod
		+	metadata:
		+	...
		+	ownerReferences:
		+	- apiVersion: apps/v1
		+	controller: true
		+	blockOwnerDeletion: true
		+	kind: ReplicaSet
		+	name: my-repset
		+	uid: d9607e19-f88f-11e6-a518-42010a800195
		+	...
		+	This way, deletion of the parent object will also delete the child object via garbase collection.
		+
		+	So, a's controller ensures that a's current status matches with a's spec. Say, if one deletes b, then b will be deleted. But a is still alive and a's controller sees that there is a difference between a's current status and a's spec. So a's controller recreates a new b obj to match with the a's spec.
		+
		+	The ops created a Deployment that created ReplicaSet that further created Pod(s). So here the soln was to delete the root obj which was the Deployment.
		+
		+	$ kubectl get deploy -n {namespace}
		+
		+	$ kubectl delete deploy {deployment
		+	```

Pod deletion in k8s - Revision history

Busk at 00:36, 3 July 2023

Busk: Created page with "https://stackoverflow.com/questions/53405701/can-not-delete-pods-in-kubernetes"