apiVersion: apps/v1
kind: Deployment
metadata:
  name: tailscale
  namespace: tailscale
  labels:
    app: tailscale
spec:
  replicas: 1
  # One tailnet identity: two pods would fight over the same device.
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: tailscale
  template:
    metadata:
      annotations:
        checksum/config: cae36007d55b173cb756b9b94cf22d71b25e7c3fae78a413a1b82941ae257142
      labels:
        app: tailscale
    spec:
      serviceAccountName: tailscale
      # Holds the cluster's tailnet identity; keep it off the node where CI runs.
      nodeSelector:
        node-role.kubernetes.io/control-plane: "true"
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 1000
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: tailscale
          image: docker.io/tailscale/tailscale:v1.102.4
          env:
            # Userspace networking needs no /dev/net/tun, so the pod needs no privileges.
            - name: TS_USERSPACE
              value: "true"
            - name: TS_HOSTNAME
              value: lab
            - name: TS_KUBE_SECRET
              value: tailscale-state
            # The single-use key is spent after the first login; never present it again.
            - name: TS_AUTH_ONCE
              value: "true"
            - name: TS_AUTHKEY
              valueFrom:
                secretKeyRef:
                  name: tailscale-auth
                  key: TS_AUTHKEY
                  optional: true
            - name: TS_SERVE_CONFIG
              value: /config/serve.json
            - name: TS_ENABLE_HEALTH_CHECK
              value: "true"
            - name: TS_LOCAL_ADDR_PORT
              value: "[::]:9002"
          ports:
            - name: health
              containerPort: 9002
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            capabilities:
              drop:
                - ALL
          resources:
            requests:
              cpu: 10m
              memory: 64Mi
            limits:
              memory: 256Mi
          readinessProbe:
            httpGet:
              path: /healthz
              port: health
            periodSeconds: 10
          livenessProbe:
            httpGet:
              path: /healthz
              port: health
            initialDelaySeconds: 60
            periodSeconds: 30
          volumeMounts:
            - name: serve-config
              mountPath: /config
              readOnly: true
            - name: tmp
              mountPath: /tmp
            - name: var-lib
              mountPath: /var/lib/tailscale
      volumes:
        - name: serve-config
          configMap:
            name: tailscale-serve
        - name: tmp
          emptyDir: {}
        - name: var-lib
          emptyDir: {}