Convert OpenShift DeploymentConfig to Kubernetes Deployment

convert-deploymentconfig-to-deployment.md

1. Change apiVersion from:

   - apiVersion: v1

   (or apiVersion: apps.openshift.io/v1)

   to:

   - apiVersion: apps/v1

2. Change kind from:

     kind: DeploymentConfig

   to:

     kind: Deployment

3. Change spec.selectors from:

       selector:
         name: ...

   to:

       selector:
         matchLabels:
           name: ...

4. Make sure spec.template.spec.containers.image is set, e.g.

           image: registry.access.redhat.com/rhscl/postgresql-${POSTGRESQL_VERSION}-rhel7
           imagePullPolicy: Always
   

5. Remove spec.triggers section entirely

6. Remove fields from spec.strategy:

• activeDeadlineSeconds
• resources
• rollingParams.intervalSeconds
• rollingParams.timeoutSeconds
• rollingParams.updatePeriodSeconds

1. Update spec.strategy.type from Rolling to RollingUpdate

2. Remove spec.test entirely

thanks! just one thing is missing (tested on K8s 1.20) :

• finally spec.strategy.rollingParams need to be renamed to spec.strategy.rollingUpdate

kind: Deployment
spec:
  ...
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate