Kubernetes Namespace Operations

Internal

• Kubernetes Operations
• Namespace Concepts

Overview

kubectl create ns <namespace-name>

kubectl get namespaces|ns

kubectl delete namespace|ns <namespace-name>

Recipes

Namespace Deleting Stuck in "Terminating" State

Noticed with EKS 1.16.

Solution here:

https://medium.com/@clouddev.guru/how-to-fix-kubernetes-namespace-deleting-stuck-in-terminating-state-5ed75792647e

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

Edit data.json and remove "kubernetes" finalizer, leave an empty array []:

{
    "apiVersion": "v1",
    "kind": "Namespace",
    "metadata": {
        "creationTimestamp": "2019-05-14T13:55:20Z",
        "labels": {
            "name": "something"
        },
        "name": "logging",
        "resourceVersion": "29571918",
        "selfLink": "/api/v1/namespaces/something",
        "uid": "e9516a8b-764f-11e9-9621-0a9c41ba9af6"
    },
    "spec": {
        "finalizers": [
            "kubernetes"
        ]
    },
    "status": {
        "phase": "Terminating"
    }
}

Execute, after replacing <errant-namespace> with the actual name of the namespace:

kubectl replace --raw "/api/v1/namespaces/<errant-namespace>/finalize" -f ./data.json