148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 15 ■ Using an HA Master with OpenShift
Find the project status:
oc status
Create a new OpenShift application with the oc new-app command.
oc new-app openshift/ruby-20-centos7~https://github.com/openshift/ruby-hello-world.git
A new OpenShift application is created.
To delete all the objects for an application run the following command:
oc delete all -l app=appName
For example, to delete all the objects for the hello-world application, run the following command:
oc delete all -l app=hello-world
Create some other application with the oc new-app command. The image tag may be specified, for
example for the openshift/deployment-example Docker image.
oc new-app openshift/deployment-example:v1
An OpenShift application is created. Initially the oc get pods command may list the pods as not
running, but with Status ContainerCreating as shown in Figure 15-15.
Figure 15-15. Listing the pods
Multiple applications from the same Docker image may be started concurrently; for example, run the
same command again:
oc new-app openshift/deployment-example:v1
When both the applications have started, two pods are listed, as shown in Figure 15-16.
Figure 15-16. Running multiple applications concurrently
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