OpenShift DeploymentConfig Definition

External

• https://docs.openshift.com/container-platform/latest/rest_api/openshift_v1.html#v1-deploymentconfig
• https://docs.openshift.com/container-platform/latest/rest_api/openshift_v1.html#v1-deploymentconfigspec

Internal

• OpenShift Concepts
• OpenShift Definitions

Definition

apiVersion: v1

kind:       DeploymentConfig

metadata: 
            name: blue

            labels: {...}
  
spec: 
            replicas: 1

            selector: 
                      name: some-name

            strategy: 
                      type: Recreate

            template: 

                      metadata: 
                              labels: {...}

                      spec: 
                           containers:  
                                        - name: blue
                                          image: 
                                          imagePullPolicy: Always
                                          ports:
                                                 - containerPort: 1234
                                                   protocol: TCP
                                          volumeMounts:
                                                 - name: data
                                                   mountPath: /opt/blue/data
                                                 - name: config
                                                   mountPath: /etc/blue/conf
                                          livenessProbe: {...}
                                          readinessProbe: {...}
                                          terminationMessagePath: /dev/termination-log
                                          resources: {...}

                           dnsPolicy: ClusterFirst
                           restartPolicy: Always
                           securityContext: {...}
                           terminationGracePeriodSeconds: 30
                           volumes:  
                                   - name: data
                                     persistentVolumeClaim:
                                       claimName: data-pvc
                                   - name: config
                                     configMap:
                                       name: config-cm
                                       items:
                                         - key: app.ini
                                           path: app.ini
            triggers: 
                     - type: ConfigChange
                     - type: ImageChange
                       imageChangeParams:
                         from:
                           kind: ImageStreamTag
                           name: gogs:0.11.29

status: {...}

Notes

spec.selector

Represents a query that applied over pods, returns the number of pods which should match the "replica" count. This is the query used by the replication controller to figure out whether it has to spin up or shut down pods.