liqingsanjin / operator-demo

What is it

This is an operator-demo. You can use it to create CRD, and listen the events that contains ADD/UPDATE/DELETE event.

Event ADD: Create apps of nginx, k8s cluster can access it through cluster ip

Event UPDATE: Update the version of nginx

Event DELETE: Delete all of pods, deployments, and services

How to get it

    
    cd $GOPATH/src/github.com/liqingsanjin
    
    git clone https://github.com/liqingsanjin/operator-demo.git

How to use it

1. Enter the root dir of the project, $operator-demo is the project dir

   
   cd $GOPATH/src/github.com/liqingsanjin/operator-demo
   
   
   

2. Build app, docker image and push the image

   
   sh dockerfiles/qiniu-nginx/build.sh yourImage
   
   

3. Update the the image in the file (yaml/demo/qiniu_nginx.yaml). Then deploy the app in k8s cluster

   
   kubectl create -f yaml/demo/qiniu_nginx.yaml
   
   

4. Create/Update/Delete an instance of the crd

   
   kubectl create -f yaml/demo/test_qiniu_nginx.yaml
   
   kubectl replace -f yaml/demo/test_qiniu_nginx.yaml
   
   kubectl delete -f yaml/demo/test_qiniu_nginx.yaml
   
   

Run it on other namespace

1. Create service account

    kubectl create -f yaml/demo/service_account.yaml -n yourNamespace

2. Create cluster role

    kubectl create -f yaml/demo/cluster_role.yaml

3. Create cluster role binding

    kubectl create -f yaml/demo/cluster_role_binding.yaml

Then you need update the files(yaml/demo/qiniu_nginx.yaml, yaml/demo/cluster_role_binding.yaml), add the serviceAccountName and your namespace in them.

    serviceAccountName: yourServiceAccountName

Create the app

    kubectl create -f yaml/demo/qiniu_nginx.yaml -n yourNamespace

Run it with helm

    helm install helm/operator-demo