mariadb / fpm / wordpress stack on Portworx

liquidweb.md

Create Portworx-ready Cluster on GCP

Deploys a complete "Portworx-ready" Kubernetes cluster in GCP. Configurable elements:

• Kubernetes version (default 1.7)
• number of Minions (default 3)
• volume size per minion (default 10GB)
• machine type (default n1-standard-2 )
• region (default us-central1)
• region-zone (default us-central1-f)

[ Caveat Kubernetes 1.7.0 bug: If terraporx doesn't work (and loops on startup), log on to master and run this on this: kubernetes/kubeadm#335 (comment) ]

Install Portworx Stack

This shell script installs a complete Portworx Stack on Kubernetes including:

• 'etcd' cluster
• portworx deployed as Kubernetes daemonset
• influxdb (time series database for monitoring on persistent storage)
• Lighthouse cluster monitor/mgmt framework

Create firewall rules for Portworx Lighthouse and WordPress

gcloud compute firewall-rules create wordpress --allow tcp:30303 --target-tags=wordpress
gcloud compute firewall-rules create lighthouse --allow tcp:30062 --target-tags=lighthouse
gcloud compute instances add-tags k8s-master --tags wordpress,lighthouse   

Create password secret

WP/MYSQL example based on https://github.com/kubernetes/examples/blob/master/mysql-wordpress-pd/README.md

Create password.txt with password to use.

tr --delete '\n' <password.txt >.strippedpassword.txt && mv .strippedpassword.txt password.txt
kubectl create secret generic mariadb-pass --from-file=password.txt

Configuration

See #wp-mysql.yml for configuration file.

Access System

Portworx Lighthouse will be accessible on the k8s-master node, port 30062
WordPress instance will be accessible on the k8s-master node, port 30303

wp-mysql.yml

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc-1
  annotations:
    volume.beta.kubernetes.io/storage-class: portworx-lw-sc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
---
apiVersion: v1
kind: Service
metadata:
  name: mysql
  labels:
    app: mysql
spec:
  ports:
    - port: 3306
  selector:
    app: mysql
    tier: db
  clusterIP: None
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: mysql
  labels:
    app: mysql
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mysql
        tier: db
    spec:
      containers:
      - image: mariadb:10.2.7
        name: mysql
        env:
          # $ kubectl create secret generic mysql-pass --from-file=password.txt
          # make sure password.txt does not have a trailing newline
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password.txt
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pvc-1
---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
  name: portworx-lw-sc
provisioner: kubernetes.io/portworx-volume
parameters:
  repl: "3"
  shared: "true"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wp-pv-claim
  labels:
    app: wordpress
  annotations:
    volume.beta.kubernetes.io/storage-class: portworx-lw-sc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  selector:
    matchLabels:
      app: wordpress
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 9000
      targetPort: 9000
      protocol: TCP
      name: wordpress
  selector:
    app: wordpress
    tier: frontend
  type: ClusterIP
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: wordpress
  labels:
    app: wordpress
    tier: frontend
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        name: wp-nginx
        app: wordpress
        tier: frontend
    spec:
      containers:
      - image: wordpress:4.8-php7.1-fpm
        name: wordpress
        env:
        - name: WORDPRESS_DB_HOST
          value: mysql
        - name: WORDPRESS_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password.txt
        ports:
        - containerPort: 9000
          name: wordpress
        volumeMounts:
        - name: wordpress-persistent-storage
          mountPath: /var/www/html
      volumes:
      - name: wordpress-persistent-storage
        persistentVolumeClaim:
          claimName: wp-pv-claim
---
apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
    - port: 80
      nodePort: 30303
      protocol: TCP
      name: http
  selector:
    app: nginx
    tier: frontend
  type: NodePort
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx
  labels:
    app: nginx
    tier: frontend
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        name: nginx
        app: nginx
        tier: frontend
    spec:
      containers:
      - image: raulr/nginx-wordpress
        name: nginx
        ports:
        - containerPort: 80
          name: http
        env:
        - name: POST_MAX_SIZE
          value: 128m
        volumeMounts:
        - name: wordpress-persistent-storage
          mountPath: /var/www/html
      volumes:
      - name: wordpress-persistent-storage
        persistentVolumeClaim:
          claimName: wp-pv-claim