How to delete Kubernetes namespace stuck in terminating state

How to delete Kubernetes namespace stuck in terminating state:

Port forwarding to k8s:

ssh -oTCPKeepAlive=no -oServerAliveInterval=20 -J<name of vm>:2222 -NL 4443:<IP Address of k8s>:4443 <user_id>@bastion.local

Open another terminal and run below command:

kubectl api-versions

kubectl get namespaces

NAME              STATUS AGE

admin             Active 213d

buglabs           Terminating 6d20h

default           Active 265d

kube-node-lease   Active 265d

kube-public       Active 265d

kube-system       Active 265d

tslogs            Terminating 186d

kubectl get namespace <namespace> -o json > <namespace>.json

kubectl get namespace buglabs -o json > buglabs.json

Edit buglabs.json file and remove “kubernetes” from finalizers section:

{

    "apiVersion": "v1",

    "kind": "Namespace",

    "metadata": {

        "creationTimestamp": "2020-01-27T09:59:04Z",

        "deletionTimestamp": "2020-01-27T10:04:30Z",

        "name": "buglabs",

        "resourceVersion": "<some number>",

        "selfLink": "/api/v1/namespaces/buglabs",

        "uid": "<some_id>"

    },

    "spec": {

        "finalizers": [

        ]

    },

    "status": {

        "phase": "Terminating"

    }

}

~   

Execute below command:

curl -k -H "Content-Type: application/json" -X PUT --data-binary @buglabs.json http://127.0.0.1:8001/api/v1/namespaces/buglabs/finalize

For deleting each namespace, please repeat the above steps by editing relating name.

Below are the namespaces deleted from k8s

1. buglabs

Run below commands to see if namespaces are deleted:

kubectl get namespaces

NAME              STATUS AGE

admin             Active 213d

default           Active 265d

kube-node-lease   Active 265d

kube-public       Active 265d

kube-system       Active 265d

And again created using kubectl create namespace <namespace_to_be_created>

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