Wordpress in Kubernetes K3s on Raspberry Pi

mariadb.yml

# This manifest assumes 'wordpress' namespace is already present:
#
#   kubectl create namespace wordpress
#
# Apply the manifest with:
#
#   kubectl apply -f mariadb.yml
---
apiVersion: v1
kind: Secret
metadata:
  name: mariadb-pass
  namespace: wordpress
  labels:
    app: wordpress
data:
  # This value is base64-encoded. Do not use this password in production!
  password: MjJzaXl3dVpBNFdmeHNZcg==

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mariadb-pv-claim
  namespace: wordpress
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: wordpress-mariadb
  namespace: wordpress
  labels:
    app: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      tier: mariadb
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: mariadb
    spec:
      containers:
        - image: tobi312/rpi-mariadb:10.3
          name: mariadb
          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-pass
                  key: password
          ports:
            - containerPort: 3306
              name: mariadb
          volumeMounts:
            - name: mariadb-persistent-storage
              mountPath: /var/lib/mysql
          resources:
            limits:
              cpu: '1'
              memory: '512Mi'
            requests:
              cpu: '500m'
              memory: '256Mi'
      volumes:
        - name: mariadb-persistent-storage
          persistentVolumeClaim:
            claimName: mariadb-pv-claim

---
apiVersion: v1
kind: Service
metadata:
  name: wordpress-mariadb
  namespace: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 3306
  selector:
    app: wordpress
    tier: mariadb
  clusterIP: None

wordpress.yml

# This manifest assumes 'wordpress' namespace is already present:
#
#   kubectl create namespace wordpress
#
# Apply the manifest with:
#
#   kubectl apply -f wordpress.yml
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wp-pv-claim
  namespace: wordpress
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: wordpress
  namespace: 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:5.4-apache
          name: wordpress
          env:
            - name: WORDPRESS_DB_HOST
              value: wordpress-mariadb
            - name: WORDPRESS_DB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-pass
                  key: password
          ports:
            - containerPort: 80
              name: wordpress
          volumeMounts:
            - name: wordpress-persistent-storage
              mountPath: /var/www/html
          resources:
            limits:
              cpu: '1'
              memory: '512Mi'
            requests:
              cpu: '500m'
              memory: '256Mi'
      volumes:
        - name: wordpress-persistent-storage
          persistentVolumeClaim:
            claimName: wp-pv-claim

---
apiVersion: v1
kind: Service
metadata:
  name: wordpress
  namespace: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 80
  selector:
    app: wordpress
    tier: frontend
  type: NodePort

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: wordpress
  namespace: wordpress
spec:
  rules:
    - host: wordpress.10.0.100.99.nip.io
      http:
        paths:
          - path: /
            backend:
              serviceName: wordpress
              servicePort: 80

Hi Jeff,

I think I have version problem with deployment of the wordpres.yml file.

Warning: extensions/v1beta1 Ingress is deprecated in v1.14+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress ingress.extensions/wordpress configured

I try to adapt wordpress.yml file accordingly in the line 90 apiVersion: extensions/v1beta1
without success. Do you have any ideas? My k3s VERSION: v1.20.2+k3s1

By the way Thank you very much for your videos on k3s on raspberry cluster and Kubernetes! Great content!

Cheers,
Nenad

Hi Nenad13, here is the last reworked version from me that I can confirm that it works:

I'm newbie with k3s but everything went well here.

I have a question, how can i access wordpress in browser?

Update:
I got how to deal with it.

Could we please have your code updated ?

/var/lib/mysql as datadir is not working - I keep trying find a solution for this.

I can mount my persistent volumne to /data no problem but the database will write to /var/lib/mysql.

Here the error message.

2022-08-04 09:56:27+00:00 [Note] [Entrypoint]: Entrypoint script for MariaDB Server 1:10.3.* started.
chown: changing ownership of '/var/lib/mysql/': Operation not permitted

;o)