KubeCon Demo

README.md

setup

Startup a 3 node Kuberentes cluster.

Run this in a shell to see the whats happening in the cluster:

watch -t -n1 'kubectl get pods -n rook  -o wide && echo && echo && kubectl get pods -o wide && echo && echo && kubectl get pvc'

demo

First create the operator:

kubectl create -f operator.yaml

Next create the cluster:

kubectl create -f cluster.yaml
```

Next create the pool and storageclass:
```
export MONS=$(kubectl -n rook get pod mon0 mon1 mon2 -o json|jq ".items[].status.podIP"|tr -d "\""|sed -e 's/$/:6790/'|paste -s -d, -) && sed 's#INSERT_HERE#'$MONS'#' pool.yaml | kubectl create -f -
```

Run the wordpress app:
```
kubectl create -f wordpress.yaml
```

Get the ip address of the wordpress pod and port:
```
kubectl get pods -o wide
kubectl get svc wordpress
```

# client

if you want to run the rook client:
```
kubectl create -f rook-client.yaml
kubectl -n rook exec rook-client -it bash
```

# cleanup

to cleanup run the following:
```
kubectl delete -f wordpress.yaml
kubectl delete deployment rook-operator
kubectl delete thirdpartyresources rookcluster.rook.io rookpool.rook.io
kubectl delete storageclass rook-block
kubectl delete secret rook-rbd-user
kubectl delete namespace rook
kubectl delete -f rook-client.yaml
```

cluster.yaml

apiVersion: rook.io/v1beta1
kind: Rookcluster
metadata:
  name: rook
spec:
  namespace: rook
  version: latest
  dataDirHostPath: 
  useAllDevices: false
  deviceFilter:

operator.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: rook-operator
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: rook-operator
    spec:
      containers:
      - name: rook-operator
        image: quay.io/rook/rook-operator
        env:
        - name: ROOK_OPERATOR_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace

pool.yaml

apiVersion: rook.io/v1beta1
kind: Rookpool
metadata:
  name: rook-replicapool
spec:
  name: replicapool
  namespace: rook
  replication:
    count: 1
---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
   name: rook-block
   namespace: rook
provisioner: kubernetes.io/rbd
parameters:
    monitors: INSERT_HERE
    adminId: admin
    adminSecretName: rook-admin
    adminSecretNamespace: rook
    pool: replicapool
    userId: rook-rbd-user
    userSecretName: rook-rbd-user

wordpress.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pv-claim
  annotations:
    volume.beta.kubernetes.io/storage-class: rook-block
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  ports:
    - port: 3306
  selector:
    app: wordpress
    tier: mysql
  clusterIP: None
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: mysql
    spec:
      containers:
      - image: mysql:5.6
        name: mysql
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: changeme
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pv-claim
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 80
  selector:
    app: wordpress
    tier: frontend
  type: NodePort
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wp-pv-claim
  annotations:
    volume.beta.kubernetes.io/storage-class: rook-block
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: frontend
    spec:
      containers:
      - image: wordpress:4.6.1-apache
        name: wordpress
        env:
        - name: WORDPRESS_DB_HOST
          value: wordpress-mysql
        - name: WORDPRESS_DB_PASSWORD
          value: changeme
        ports:
        - containerPort: 80
          name: wordpress
        volumeMounts:
        - name: wordpress-persistent-storage
          mountPath: /var/www/html
      volumes:
      - name: wordpress-persistent-storage
        persistentVolumeClaim:
          claimName: wp-pv-claim