Proposal: Support both Openshift and Kubernetes

[rthallisey]

Feature: Support other Clusters than OpenShift

The ansible-service-broker is currently OpenShift only because OpenShift has a few features that Kubernetes is still developing. The delta between OpenShift and Kubernetes is going to be a common occurrence so need a way to easily support both. I'm proposing that we can solve this by organizing our code paths into separate pieces and filling the gaps to meet the service-catalog specs:

• Kubernetes operations
• OpenShift operations
• Kubernetes hack operations that perform the actions done in 'OpenShift operations', but for Kubernetes

Proposed work

1. Split out all the clients into pkg/clients/
   1a. Break apart all the clients so they are easier to consume #213
   2a. Breakup all the Broker Clients into a clients pkg #222
2. Split out all Cluster logic into a pkg/cluster/openshift.go and pkg/cluster/kubernetes.go

• Kubernetes is used for the majority of the broker actions while OpenShift a small number of actions. Let's break apart these code paths and call into a cluster pkg for cluster actions.

3. Create a pkg/cluster/kubernetes-hack.go that will do OpenShift specific functions the Kubernetes way
4. Use a Kubernetes solution to service accounts
   4a. https://github.com/openshift/ansible-service-broker/blob/master/pkg/apb/svc_acct.go
5. Change APBs so they support Kubernetes
   5a. Don't hard code openshift/k8s things in the apb-base fusor/apb-examples#60
6. Remove all "oc" commands and replace them with Kubernetes and OpenShift client calls
   6a. https://github.com/openshift/ansible-service-broker/search?p=1&q=%22oc%22&type=&utf8=%E2%9C%93

[rthallisey]

I think git might've closed this. Reopening to track more PR's

[ron1]

Was this closed prematurely?

[rthallisey]

Once #556 merged, the broker was able on kubernetes.

If you want to use ansible to setup the broker & catalog on kubernetes see: https://github.com/fusor/catasb#openshift-or-kubernetes

If you want to use the template for the broker: https://github.com/openshift/ansible-service-broker/blob/master/templates/k8s-ansible-service-broker.yaml.j2 and https://github.com/openshift/ansible-service-broker/blob/master/templates/k8s-template.py

[rthallisey]

Ability to run ASB in a pure Kubernetes clusters without OpenShift