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Cover image for How to scale an application in OpenShift?
Sagar Jadhav
Sagar Jadhav

Posted on • Edited on • Originally published at developersthought.in

How to scale an application in OpenShift?

#devops #kubernetes #openshift #docker

Objective

  • Scale up Nginx application using oc scale command
  • Scale up Nginx application by updating DeploymentConfig
  • Scale down Nginx application using oc scale command

Step 1: Deploy Nginx application

Refer User & Project Management blog

Step 2: List pods 

oc get pods
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Step 3: Scale up Nginx application using oc scale command 

oc scale dc nginx --replicas=5
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oc get pods --watch
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Step 4: Scale up nginx application by updating DeploymentConfig 

oc edit dc nginx
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update replicas = 7
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oc get pods --watch
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Step 5: Scale down nginx application using oc scale command 

oc scale dc nginx --replicas=1
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oc get pods --watch
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