Running CDS in minikube (WIP)

CDS can be deployed to minikube.

Rough outline of steps. 

1. Install minikube using k8s before 1.16 (our OOM charts are not compatible with 1.16)
2. install helm (I had 2.15.2)

3. clone OOM repo (git clone "https://gerrit.onap.org/r/oom")

4. Start HELM service (helm serve&)
5. go into "kubernetes" dir inside oom
6. Build common and CDS charts (make common cds)
7. Copy values.yaml file (we'll call it overrides file) to another place (we'll reference it later)

8. Edit the file and add the following lines (note spacing should be lining up)
   
   

   cds-blueprints-processor:                                                              
     dmaapEnabled: false 
   global:
     nodePortPrefix: 302
     nodePortPrefixExt: 304
     repository: nexus3.onap.org:10001
     readinessRepository: oomk8s
     readinessImage: readiness-check:2.0.2
     loggingRepository: docker.elastic.co
     loggingImage: beats/filebeat:5.5.0
     persistence:
       enabled: true
       storageClass: standard
       ##mountPath: /dockerdata-nfs

9. Do modification for mariadb-galera as well
   
   

   mariadb-galera:
     config:
         userName: sdnctl
         userPassword: sdnctl
         mariadbRootPassword: sdnctl
         mysqlDatabase: sdnctl
     nameOverride: cds-db
     service:
       name: cds-db
       portName: cds-db
     replicaCount: 1
     persistence:
       enabled: true
       storageClass: standard
       mountSubPath: cds/data

10. You can check which storageclass you'll need by using "kubectl get sc" 
    
    
    
11. Deploy tiller
    But first, check if you are in the right context "kubectl config current-context". You want to see minikube.
    helm init 
12. Create k8s role/rolebindings to get pods. This is needed by the readiness probes which do equivalent of "kubectl get pod |grep something".
    

    kubectl create role pod-reader --verb=get --verb=list --verb=watch --resource=pods --resource=statefulset --resource=deployment
    kubectl create rolebinding pod-reader-binding --role pod-reader --serviceaccount=default:default --namespace=default

13. Deploy the helm chart:
    Go into kubernetes/cds directory
    
    

    helm upgrade -i minikubecds . -f /location/to/cds.overrides

Note. Currently, elalto branch of OOM is more tested. I've just noticed that master OOM provides CDS 0.6.3, which is outdated....