apps/snips/resources/statefulset.yaml

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: snips
spec:
  replicas: 1
  serviceName: snips
  selector:
    matchLabels:
      app.kubernetes.io/name: snips
  template:
    metadata:
      labels:
        app.kubernetes.io/name: snips
    spec:
      initContainers:
        - name: init-litestream
          image: litestream
          args: ['restore', '-replica=Garage', '-if-db-not-exists', '-if-replica-exists', '/data/snips.db']
          env:
            - name: LITESTREAM_ACCESS_KEY_ID
              valueFrom:
                secretKeyRef:
                  name: snips-secrets
                  key: garage-access-key
            - name: LITESTREAM_SECRET_ACCESS_KEY
              valueFrom:
                secretKeyRef:
                  name: snips-secrets
                  key: garage-secret-key
          volumeMounts:
            - name: data
              mountPath: /data
            - name: litestream-config
              mountPath: /etc/litestream.yml
              subPath: litestream.yml
          securityContext:
            capabilities:
              drop:
                - ALL
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
      containers:
        - name: snips
          image: snips
          envFrom:
            - configMapRef:
                name: snips-config
          env:
            - name: SNIPS_HMACKEY
              valueFrom:
                secretKeyRef:
                  name: snips-secrets
                  key: hmackey
            - name: GOMEMLIMIT
              valueFrom:
                resourceFieldRef:
                  resource: limits.memory
          ports:
            - containerPort: 8080
              protocol: TCP
              name: http
            - containerPort: 2222
              protocol: TCP
              name: ssh
          livenessProbe:
            tcpSocket:
              port: 2222
            initialDelaySeconds: 5
            periodSeconds: 5
          readinessProbe:
            tcpSocket:
              port: 2222
            initialDelaySeconds: 5
            periodSeconds: 5
          resources:
            limits:
              cpu: 100m
              memory: 200Mi
            requests:
              cpu: 50m
              memory: 50Mi
          volumeMounts:
            - name: snips-secrets
              readOnly: true
              mountPath: /etc/snips
            - name: data
              mountPath: /data
          securityContext:
            capabilities:
              drop:
                - ALL
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
        - name: litestream
          image: litestream
          args: ['replicate']
          volumeMounts:
            - name: data
              mountPath: /data
            - name: litestream-config
              mountPath: /etc/litestream.yml
              subPath: litestream.yml
          env:
            - name: LITESTREAM_ACCESS_KEY_ID
              valueFrom:
                secretKeyRef:
                  name: snips-secrets
                  key: garage-access-key
            - name: LITESTREAM_SECRET_ACCESS_KEY
              valueFrom:
                secretKeyRef:
                  name: snips-secrets
                  key: garage-secret-key
          readinessProbe:
            httpGet:
              path: /metrics
              port: 9090
            initialDelaySeconds: 5
            periodSeconds: 5
          livenessProbe:
            httpGet:
              path: /metrics
              port: 9090
            initialDelaySeconds: 5
            periodSeconds: 5
          ports:
            - name: metrics
              containerPort: 9090
          securityContext:
            capabilities:
              drop:
                - ALL
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
      securityContext:
        runAsUser: 1000
        runAsGroup: 1000
        fsGroup: 1000
        runAsNonRoot: true
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 100
            podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app.kubernetes.io/name
                  operator: In
                  values:
                  - snips
              topologyKey: topology.kubernetes.io/zone
      volumes:
        - name: data
          emptyDir: {}
        - name: snips-secrets
          secret:
            secretName: snips-secrets
            items:
              - key: authorized_keys
                path: authorized_keys
              - key: snips
                path: snips
              - key: snips.pub
                path: snips.pub
        - name: litestream-config
          configMap:
            name: litestream-config