Drupal in Kubernetes K3s on Raspberry Pi

drupal.yml

# This manifest assumes 'drupal' namespace is already present:
#
#   kubectl create namespace drupal
#
# Apply the manifest with:
#
#   kubectl apply -f drupal.yml
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: drupal-config
  namespace: drupal
data:
  # Note: This is NOT secure. Don't use this in production!
  settings.php: |-
    <?php
    $databases['default']['default'] = [
      'database' => 'drupal',
      'username' => 'drupal',
      'password' => 'drupal',
      'prefix' => '',
      'host' => 'mariadb',
      'port' => '3306',
      'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
      'driver' => 'mysql',
    ];
    $settings['hash_salt'] = 'OTk4MTYzYWI4N2E2MGIxNjlmYmQ2MTA4';
    $settings['trusted_host_patterns'] = ['^.+$'];
    $settings['config_sync_directory'] = 'sites/default/files/config_OTk4MTYzY';

---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: drupal-files-pvc
  namespace: drupal
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: drupal
  namespace: drupal
spec:
  replicas: 1
  selector:
    matchLabels:
      app: drupal
  template:
    metadata:
      labels:
        app: drupal
    spec:
      containers:
        - name: drupal
          image: 'drupal:8.8-apache'
          ports:
            - containerPort: 80
          livenessProbe:
            tcpSocket:
              port: 80
            initialDelaySeconds: 60
          readinessProbe:
            tcpSocket:
              port: 80
            initialDelaySeconds: 30
          volumeMounts:
            - mountPath: /var/www/html/sites/default/
              name: drupal-settings
            - mountPath: /var/www/html/sites/default/files/
              name: drupal-files
          resources:
            limits:
              cpu: '1'
              memory: '512Mi'
            requests:
              cpu: '500m'
              memory: '256Mi'
      volumes:
        - name: drupal-settings
          configMap:
            name: drupal-config
        - name: drupal-files
          persistentVolumeClaim:
            claimName: drupal-files-pvc

---
kind: Service
apiVersion: v1
metadata:
  name: drupal
  namespace: drupal
spec:
  type: NodePort
  ports:
    - port: 80
      targetPort: 80
  selector:
    app: drupal

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

mariadb.yml

# This manifest assumes 'drupal' namespace is already present:
#
#   kubectl create namespace drupal
#
# Apply the manifest with:
#
#   kubectl apply -f mariadb.yml
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: mariadb-pvc
  namespace: drupal
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: mariadb
  namespace: drupal
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mariadb
  template:
    metadata:
      labels:
        app: mariadb
    spec:
      containers:
        - name: mariadb
          image: tobi312/rpi-mariadb:10.3
          ports:
            - containerPort: 3306
          env:
            - name: MYSQL_DATABASE
              value: drupal
            - name: MYSQL_USER
              value: drupal
            - name: MYSQL_PASSWORD
              value: drupal
            - name: MYSQL_RANDOM_ROOT_PASSWORD
              value: 'yes'
          volumeMounts:
            - mountPath: /var/lib/mysql/
              name: database
          resources:
            limits:
              cpu: '2'
              memory: '512Mi'
            requests:
              cpu: '500m'
              memory: '256Mi'
      volumes:
        - name: database
          persistentVolumeClaim:
            claimName: mariadb-pvc

---
kind: Service
apiVersion: v1
metadata:
  name: mariadb
  namespace: drupal
spec:
  ports:
    - port: 3306
      targetPort: 3306
  selector:
    app: mariadb

Hi Jeff

I keep getting this error on installation of drupal....

Not sure how to proceed from here...

Regards Ron

Thanks for these. I've been following your tutorial episode 4. Unfortunately I'm pretty new to all this. I'm getting a:

error: unable to recognize "drupal.yml": no matches for kind "Ingress" in version "extensions/v1beta1"

When running the manifest.

@RossWilliamson - That should probably be extensions/v1 I think, now, and it needs a couple other formatting changes for the actual ingress resource.

@geerlingguy Thanks! I did some googling and the following seemed to work (I don't think you can do pull requests with gists so I'll paste it here). Again - I'm just learning so this worked for me but may well not be correct (I have no idea what the pathType: ImplementationSpecific does yet.)

---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: drupal
  namespace: drupal
spec:
  rules:
    - host: drupal.192.168.1.101.nip.io
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: drupal
                port:
                  number: 80

For those of you running into the image pull error for MariaDB, I changed the image to tobi312/rpi-mariadb:10.6-ubuntu and it seems to work on Raspberry Pi OS.