mg4/k8s/server.yaml

# The car server (Go). One replica on purpose: pending pairing requests and the wrong-password
# counters are kept in memory.
# The roads of the app's Grid map, fetched on demand, are kept on this small volume.
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mg4-server-maps
  namespace: mg4
  labels:
    app.kubernetes.io/name: mg4-server
    app.kubernetes.io/part-of: mg4
spec:
  accessModes: ["ReadWriteOnce"]
  # No storageClassName: the cluster's default class is used.
  resources:
    requests:
      storage: 1Gi
---
# The files the car sends from its Logs tab (signal recordings), read with LOGS_TOKEN. Unlike
# the map cache these are not fetched again, so they get a volume of their own.
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mg4-server-logs
  namespace: mg4
  labels:
    app.kubernetes.io/name: mg4-server
    app.kubernetes.io/part-of: mg4
spec:
  accessModes: ["ReadWriteOnce"]
  resources:
    requests:
      storage: 1Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mg4-server
  namespace: mg4
  labels:
    app.kubernetes.io/name: mg4-server
    app.kubernetes.io/part-of: mg4
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app.kubernetes.io/name: mg4-server
  template:
    metadata:
      labels:
        app.kubernetes.io/name: mg4-server
        app.kubernetes.io/part-of: mg4
    spec:
      securityContext:
        runAsNonRoot: true
        runAsUser: 65532
        runAsGroup: 65532
        fsGroup: 65532
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: server
          # Pinned by digest so a re-pushed tag cannot change what runs (version in SPECS.md).
          image: git.stinnesbeck.com/nils/mg4-server@sha256:c68837f0e53cfca150644987be535e04d5e999bd4c91064d40973db67235df48
          ports:
            - name: http
              containerPort: 8080
          env:
            - name: INFLUX_URL
              value: http://influxdb.mg4.svc:8086
            - name: INFLUX_ORG
              value: mg4
            - name: INFLUX_BUCKET
              value: mg4
            # Where a phone reaches the server; the pairing QR code points here.
            - name: PUBLIC_URL
              value: https://car.k8s.stinnesbeck.com
            # App updates: the releases of this repository, relayed to the car. Read with
            # FORGE_TOKEN from the mg4-server Secret; leave that empty to switch updates off.
            - name: FORGE_URL
              value: https://git.stinnesbeck.com
            - name: FORGE_REPO
              value: nils/mg4
            # The roads for the app's Grid map: OpenStreetMap vector tiles, fetched only for the
            # tiles a car asks for and kept on the volume below; "off" switches maps off.
            - name: MAP_TILES_URL
              value: https://tiles.openfreemap.org/planet
            - name: MAP_CACHE_DIR
              value: /var/cache/mg4-maps
            # Files from the car's Logs tab, kept on the volume below (the newest 200, at most
            # 180 days). Reading them needs LOGS_TOKEN from the Secret; empty switches reading off.
            - name: LOGS_DIR
              value: /var/lib/mg4-logs
            - name: INFLUX_TOKEN
              valueFrom:
                secretKeyRef:
                  name: influxdb-auth
                  key: admin-token
          # INGEST_TOKEN, APPROVAL_PASSWORD, FORGE_TOKEN, LOGS_TOKEN.
          envFrom:
            - secretRef:
                name: mg4-server
          readinessProbe:
            httpGet:
              path: /v1/health
              port: http
            periodSeconds: 10
          livenessProbe:
            httpGet:
              path: /v1/health
              port: http
            initialDelaySeconds: 5
            periodSeconds: 30
          resources:
            requests:
              cpu: 10m
              memory: 32Mi
            limits:
              memory: 128Mi
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            capabilities:
              drop: ["ALL"]
          volumeMounts:
            - name: maps
              mountPath: /var/cache/mg4-maps
            - name: logs
              mountPath: /var/lib/mg4-logs
      volumes:
        - name: maps
          persistentVolumeClaim:
            claimName: mg4-server-maps
        - name: logs
          persistentVolumeClaim:
            claimName: mg4-server-logs
---
apiVersion: v1
kind: Service
metadata:
  name: mg4-server
  namespace: mg4
  labels:
    app.kubernetes.io/name: mg4-server
    app.kubernetes.io/part-of: mg4
spec:
  selector:
    app.kubernetes.io/name: mg4-server
  ports:
    - name: http
      port: 80
      targetPort: http