Creating a Deployment and Service

Prerequisites

If you are logged in as a cluster administrator, log out and log back in as a regular user.

Procedure

  1. Edit the tibemsd-template.yaml template and override the default parameters as needed.
  2. Create a deployment and service with an EMS server using the modified template.

Example

For example, 

> oc login -u <user>
> oc process -f tibemsd-template.yaml -p EMS_SERVICE_NAME=emsdev01 \
     -p EMS_PUBLIC_PORT="7779" -p EMS_PVC="claim-nfs-ems-project"  \
  | oc create -f -

The oc process operation transforms the tibemsd-template.yaml template into a list of resources using the default and overridden parameter values. That list is then passed on to oc create for creation. In the above example, a deployment, a ReplicaSet, a pod, and a service are created. All four objects can be selected using the emsdev01 label.

The service exposes itself as emsdev01 inside the cluster and maps the internal port 7222 to port 7779 inside and outside the cluster. The PVC claim-nfs-ems-project is used to mount the NFS shared folders. Default values of other parameters are used to pull the EMS Docker image from the Docker registry and to set the uid of the container.

You can verify the results using the following commands: 
> oc get --selector name=emsdev01 all
> oc describe deploy/emsdev01
> oc describe svc/emsdev01

or in the OpenShift Web Console.

To deploy additional EMS servers 

> oc process -f tibemsd-template.yaml -p EMS_SERVICE_NAME=emsdev02  \ 
     -p EMS_PUBLIC_PORT="7780" -p EMS_PVC="claim-nfs-ems-project"   \ 
  | oc create -f - 
> oc process -f tibemsd-template.yaml -p EMS_SERVICE_NAME=emsdev03  \
     -p EMS_PUBLIC_PORT="7781" -p EMS_PVC="claim-nfs-ems-project"   \ 
  | oc create -f -