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Lab_003_Create_Namespaces.md

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Start:         2023-08-02 20:20:42
Finished:   2023-08-02 20:29:25

Lab 003: Create Namespaces in Kubernetes Cluster

Requirements

The Nautilus DevOps team is planning to deploy some micro services on Kubernetes platform. The team has already set up a Kubernetes cluster and now they want set up some namespaces, deployments etc. Based on the current requirements, the team has shared some details as below:

Create a namespace named dev and create a POD under it; name the pod dev-nginx-pod and use nginx image with latest tag only and remember to mention tag i.e nginx:latest.

Note: The kubectl utility on jump_host has been configured to work with the kubernetes cluster.

Steps

Create the nginx.yml based on the requirements.

apiVersion: v1
kind: Namespace
metadata:
  name: dev
---
apiVersion: v1
kind: Pod
metadata:
  name: dev-nginx-pod
  namespace: dev
spec:
  containers:
    - name: nginx
      image: nginx:latest

Apply.

kubectl apply -f .

Verify.

thor@jump_host ~$ kubectl get ns
NAME                 STATUS   AGE
default              Active   5m24s
dev                  Active   90s
kube-node-lease      Active   5m25s
kube-public          Active   5m25s
kube-system          Active   5m25s
local-path-storage   Active   5m15s
thor@jump_host ~$ 
thor@jump_host ~$ kubectl get all -n dev
NAME                READY   STATUS    RESTARTS   AGE
pod/dev-nginx-pod   1/1     Running   0          97s
thor@jump_host ~$ 
thor@jump_host ~$ kubectl describe -n dev pod dev-nginx-pod | grep Image:
    Image:          nginx:latest

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