apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: registry-proxy
  namespace: registry
  labels:
    app: registry-proxy
spec:
  selector:
    matchLabels:
      app: registry-proxy
  template:
    metadata:
      annotations:
        checksum/config: 6d8ae69bc60cecb73ca1cae26dfc69a6885ef7f338c7b76bd64785037ced3123
      labels:
        app: registry-proxy
    spec:
      automountServiceAccountToken: false
      securityContext:
        runAsNonRoot: true
        runAsUser: 99
        runAsGroup: 99
        seccompProfile:
          type: RuntimeDefault
      containers:
        - name: haproxy
          image: docker.io/library/haproxy:3.4.6-alpine
          ports:
            # containerd pulls localhost:5000/<app>:<tag> over plain HTTP with no node config.
            # hostIP keeps the port on each node's loopback; without it the unauthenticated
            # registry would be open to the LAN.
            - name: registry
              containerPort: 5000
              hostPort: 5000
              hostIP: 127.0.0.1
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            capabilities:
              drop:
                - ALL
          resources:
            requests:
              cpu: 10m
              memory: 16Mi
            limits:
              memory: 64Mi
          volumeMounts:
            - name: config
              mountPath: /usr/local/etc/haproxy
              readOnly: true
          # Ready only when the registry answers through the proxy.
          readinessProbe:
            httpGet:
              path: /v2/
              port: registry
            periodSeconds: 10
          livenessProbe:
            tcpSocket:
              port: registry
            periodSeconds: 20
      volumes:
        - name: config
          configMap:
            name: registry-proxy