OpenShift Deployment Operations

External

• https://docs.openshift.com/container-platform/3.6/dev_guide/deployments/basic_deployment_operations.html

Internal

• OpenShift Concepts - Deployments
• OpenShift Operations
• Build Operations

View Deployment Controllers for Project

oc get dc

View the Latest Deployment for a Deployment Controller

oc deploy <deployment-controller-name>

For each on-going deployment, there is a deployment pod, whose name can be inferred from the list of pods for the project:

oc get pods

View Deployment Logs

The log of the deployment can be obtained from the deployment pod:

oc get pods
NAME                 READY     STATUS             RESTARTS   AGE
...
<dc-name>-1-deploy   1/1       Running            0          7m

then:

oc logs -f <dc-name>-1-deploy 

The same log can be obtained from the deployment itself:

oc logs -f dc/<dc-name>

View Deployment Events

oc describe dc <dc-name>

Create a New Deployment

Create a New Deployment with oc new-app

oc new-app creates all the objects required by an application, including a deployment configuration.

Create a New Deployment Manually

Use a deployment configuration template similar to https://github.com/NovaOrdis/playground/blob/master/openshift/templates/eap7-deployment-configuration-template.yaml. Copy it locally and adjust, then:

oc process -p APPLICATION_NAME=<some-app-name> -f ./eap7-deployment-configuration-template.yaml | oc create -f -

Starting a Deployment

oc rollout latest dc/<deploymentconfig-name>

This will start the number of replicas specified in ?

oc scale dc logging-es-3fs5ghyo --replicas=1

scaling the pod instead of the deploymentconfig may modify the deployment config. Verify

Assigning Pods to Specific Nodes

https://docs.openshift.com/container-platform/3.6/dev_guide/deployments/basic_deployment_operations.html#assigning-pods-to-specific-nodes

Assigning a Pod to Nodes that Match a Node Selector

Edit the DeploymentConfig that defines the pod:

oc edit dc/<pod-name>

Inject the node selector specification under

spec:
  ...
  template:
    ...
    spec:
      ...
      nodeSelector:
        keyA: valueA

Restart the corresponding pod, by simply deleting it.

For more details on concepts related to pod placement, see:

Pod Placement

Turn Off Auto-Deployment After Build

oc set triggers dc/<deployment-config-name> --remove-all

Deleting a Deployment Configuration

oc delete dc/<dc-name>

Deleting a deployment configuration will also automatically delete the replication controllers generated by that deployment configuration.

Scaling Down a Deployment

oc scale dc/sonar --replicas 0
oc scale dc/sonar-postgresql --replicas 0