WordPress In Kubernetes

ing.nse.yml

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: wping
  annotations:
    kubernetes.io/ingress.class: alb
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: ip
spec:
  tls:
    - hosts:
      - wordpressapp.com
  rules:
  - host: wordpressapp.com
    http:
      paths:
      - backend:
          serviceName: wordpressnp
          servicePort: 80

Instructions

# Setting up Amazon EKS

1. Run the following command to install the Kubernetes Cluster after install eksctl from eksctl.io
2. Configure the appropriate permissions to give access to IAM, EKS, EC2, and VPC.
3. Login to the EC2 Linux Instance with the appropriate 
4. Install kubectl from here: https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/
5. Enter the following command `eksctl create cluster`


# Installing AWS ALB Ingress

Run the following kubectl command to install it

kubectl apply -f https://raw.githubusercontent.com/kubernetes-sigs/aws-load-balancer-controller/v2.1.3/docs/examples/2048/2048_full.yaml

# Deploying WordPress

Deploy WordPress by running `kubectl apply -f .` in the folder that has the following files
- mysql-deployment.yaml
- wordpress-deployment.yaml
- wpsecret.yaml
- ing.nse.yml

mysql-deployment.yaml

apiVersion: v1
kind: Service
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  ports:
    - port: 3306
  selector:
    app: wordpress
    tier: mysql
  clusterIP: None
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pv-claim
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: default
  resources:
    requests:
      storage: 200Gi
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      tier: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: mysql
    spec:
      containers:
      - image: mysql:5.6
        name: mysql
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pv-claim

wordpress-deployment.yaml

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
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: default
  resources:
    requests:
      storage: 100Gi
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      tier: frontend
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: frontend
    spec:
      containers:
      - image:  wordpress:5.5-php7.3-apache 
        name: wordpress
        env:
        - name: WORDPRESS_DB_HOST
          value: wordpress-mysql
        - name: WORDPRESS_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password
        ports:
        - containerPort: 80
          name: wordpress
        volumeMounts:
        - name: wordpress-persistent-storage
          mountPath: /var/www/html
      volumes:
      - name: wordpress-persistent-storage
        persistentVolumeClaim:
          claimName: wp-pv-claim

wpsecret.yaml

apiVersion: v1
kind: Secret
metadata:
  name: mysql-pass
type: Opaque
data:
  password: YWRtaW4=