Cloud Native 3 min read

Viewing and Scaling Pods in Kubernetes with kubectl

This guide demonstrates how to list current pod instances, increase the replica count of a deployment, and verify the updated pod status in a Kubernetes cluster using kubectl commands.

Practical DevOps Architecture

Oct 17, 2021

Viewing and Scaling Pods in Kubernetes with kubectl

Step 1 – View the current number of pod containers:

[root@master ~]# kubectl get pod

NAME                     READY   STATUS    RESTARTS   AGE
java-web-5ff9df4965-7txnb   1/1     Running   1          55d
java-web-5ff9df4965-8ctn5   1/1     Running   1          55d
java-web-5ff9df4965-zl8mb   1/1     Running   1          55d
nginx-6799fc88d8-9h95f     1/1     Running   1          56d
nginx-offi                 1/1     Running   1          59d
nginx-test-fb5b8568f-67cvv 1/1     Running   1          55d
nginx.1-6469f98fc5-75hl8    1/1     Running   1          56d
nginx.2-868f589584-jxgtd   1/1     Running   1          56d

Step 2 – Increase the number of pod replicas for the nginx deployment:

[root@master ~]# kubectl scale deployment nginx --replicas=5

deployment.apps/nginx scaled

Step 3 – Verify the updated pod count and status:

[root@master ~]# kubectl get pod

NAME                     READY   STATUS            RESTARTS   AGE
java-web-5ff9df4965-7txnb   1/1     Running           1          55d
java-web-5ff9df4965-8ctn5   1/1     Running           1          55d
java-web-5ff9df4965-zl8mb   1/1     Running           1          55d
nginx-6799fc88d8-8djlb     0/1     ContainerCreating 0          14s
nginx-6799fc88d8-9h95f     1/1     Running           1          56d
nginx-6799fc88d8-nx542     0/1     ContainerCreating 0          14s
nginx-6799fc88d8-qrchk     0/1     ContainerCreating 0          14s
nginx-6799fc88d8-z8hxj     0/1     ContainerCreating 0          14s
nginx-offi                 1/1     Running           1          59d
nginx-test-fb5b8568f-67cvv 1/1     Running           1          55d
nginx.1-6469f98fc5-75hl8    1/1     Running           1          56d
nginx.2-868f589584-jxgtd   1/1     Running           1          56d

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Operations kubectl Pod Scaling

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Practical DevOps Architecture

Hands‑on DevOps operations using Docker, K8s, Jenkins, and Ansible—empowering ops professionals to grow together through sharing, discussion, knowledge consolidation, and continuous improvement.

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