/hw-operator

K8S Operator demo project

Primary LanguageGo

Hello World Operator - Functionality demo for developers

Running locally

  • operator-sdk cli operator-sdk up local
  • standard go tooling go run cmd/manager/main.go 
        export WATCH_NAMESPACE=hwop 
    export OPERATOR_NAME=hw

Reconciliation loop basic overview

  • oc apply -f deploy/crds/cr0.yaml
  • oc apply -f deploy/crds/cr1.yaml
  • oc apply -f deploy/crds/cr2.yaml
  • oc apply -f deploy/crds/cr3.yaml

Watches

  • edit service when watching service changes
  • edit service when not watching service changes

Change the state

  • edit service, add label
  • edit deployment, add label

Delete the CR

  • Delete CR when operator is running oc delete -f deploy/crds/cr0.yaml
  • Delete CR when operator is not running oc delete -f deploy/crds/cr0.yaml

Build Operator

  • with OperatorSDK operator-sdk build <docker-image-name>
  • with standard go tools go build -o hw-operator cmd/manager/main.go
  • with local S2I s2i build . docker.io/dimssss/golang-s2i:0.5 test
  • with OpenShift SourceStrategy build 
    # Create BC
oc process -f deploy/bc.yaml | oc create -f -
oc start-build hw-operator -F

Deploy Operator

  • oc create -f deploy/service_account.yaml
  • oc create -f deploy/role.yaml
  • oc create -f deploy/role_binding.yaml
  • oc create -f deploy/operator.yaml