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Creating_an_OpenShift_Workload.adoc

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Config on OpenShift (Workloads)

An OpenShift Workload is simply a workload that is applied to an existing, running, OpenShift cluster. For example if you wish to deploy 3Scale, Prometheus, or a MicroService application you can define it as a Workload then simply and consistently deploy it with a single command to your OpenShift cluster.

This document assumes more than a passing familiarity with OpenShift but if you just want to "copy and hack" an existing Workload take a look at the OpenShift 3Scale workload.

Other OpenShift Workloads here. OpenShift Workloads all begin ocp-workload- and follow the traditional structure of an Ansible Role.

Creating Workloads that install OpenShift operators

When creating a workload that installs an operator into a cluster you need to be aware of the fact that operators change quite frequently. To prevent your workload from breaking when a new release of the operator is released into the online catalog it is highly recommended to create an operator catalog snapshot.

How are Workloads Deployed?

OpenShift Workloads are deployed by applying an Ansible role to an existing, running, cluster.

New and existing workloads can be deployed, and developed, on any OpenShift cluster including locally on your laptop (oc cluster and Minishift).

Each Workload Role includes a detailed README.adoc and they are applied by invoking the ocp-workload config.which is actually a Playbook and will apply the workload in the value ocp_workload. For example:

ansible-playbook -i localhost, -c local ./configs/ocp-workloads/ocp-workload.yml \
                    -e ocp_workload=ocp-workload-3scale-multitenant \
                    -e ACTION=create \
                    -e subdomain_base=$SUBDOMAIN_BASE \
                    -e admin_username=$ADM_USERNAME