Run MSSQL 2019 on Kubernetes

Goal

Deploy MSSQL Server 2019 on Kubernetes with persistent storage and optional Azure File Share mount.

Create SA Password Secret

kubectl create secret generic mssql --from-literal=SA_PASSWORD="P@55word"

Configure Persistent Storage

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: mssql-data
  annotations:
    volume.beta.kubernetes.io/storage-class: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi

Optional: Mount Azure File Share

Create secret with base64-encoded Azure Storage credentials:

apiVersion: v1
kind: Secret
metadata:
  name: mssql-optionalAddedStorage-secret
  namespace: sqlserver
type: Opaque
data:
  azurestorageaccountname: Z3NhcmNocG9jc3NoYXJlZHN0b3JhZ2U=
  azurestorageaccountkey: SndPbTRlTFhLSVdWc1IzYkhONFV2WGlUM3NVSjBseHYvbUpQUU5DY1pYNEsyUmhTUjBZY3c5bzdmM3huU2h6bE9KVXhhSFcxT09KSmF4VktxRityVWc9PQ==

Create a File Share named optionalAddedStorage in your Azure Storage account.

Deploy MSSQL Server

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mssql-deployment
spec:
  replicas: 1
  selector:
     matchLabels:
       app: mssql
  template:
    metadata:
      labels:
        app: mssql
    spec:
      terminationGracePeriodSeconds: 30
      hostname: mssqlinst
      securityContext:
        fsGroup: 10001
      containers:
      - name: mssql
        image: mcr.microsoft.com/mssql/server:2019-latest
        ports:
        - containerPort: 1433
        env:
        - name: MSSQL_PID
          value: "Developer"
        - name: ACCEPT_EULA
          value: "Y"
        - name: MSSQL_AGENT_ENABLED
          value: "True"
        - name: SA_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mssql
              key: SA_PASSWORD 
        volumeMounts:
        - name: mssqldb
          mountPath: /var/opt/mssql
        - name: optionalAddedStorage
          mountPath: /var/optionalAddedStorage
      volumes:
      - name: mssqldb
        persistentVolumeClaim:
          claimName: mssql-data
      - name: optionalAddedStorage
        azureFile:
          secretName: mssql-optionalAddedStorage-secret
          shareName: optionalAddedStorage
          readOnly: false
      # nodeSelector:
      #   power: high
---
apiVersion: v1
kind: Service
metadata:
  name: mssql-deployment
spec:
  selector:
    app: mssql
  ports:
    - protocol: TCP
      port: 1433
      targetPort: 1433
  type: LoadBalancer

Remove the optionalAddedStorage volumeMounts and volumes sections if Azure File Share is not needed.