apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: insecure-registries
  namespace: default
  labels:
    k8s-app: insecure-registries
spec:
  selector:
    matchLabels:
      name: insecure-registries
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        name: insecure-registries
    spec:
      nodeSelector:
        cloud.google.com/gke-container-runtime: "containerd"
      hostPID: true
      containers:
        - name: startup-script
          image: gcr.io/google-containers/startup-script:v1
          imagePullPolicy: Always
          securityContext:
            privileged: true
          env:
          - name: ADDRESS
            value: "REGISTRY_ADDRESS"
          - name: STARTUP_SCRIPT
            value: |
              set -o errexit
              set -o pipefail
              set -o nounset

              if [[ -z "$ADDRESS" || "$ADDRESS" == "REGISTRY_ADDRESS" ]]; then
                echo "Error: Environment variable ADDRESS is not set in containers.spec.env"
                exit 1
              fi

              echo "Allowlisting insecure registries..."
              containerd_config="/etc/containerd/config.toml"
              hostpath=$(sed -nr 's;  config_path = "([-/a-z0-9_.]+)";\1;p' "$containerd_config")
              if [[ -z "$hostpath" ]]; then
                echo "Node uses CRI config model V1 (deprecated), adding mirror under $containerd_config..."
                grep -qxF '[plugins."io.containerd.grpc.v1.cri".registry.mirrors."'$ADDRESS'"]' "$containerd_config" || \
                  echo -e '[plugins."io.containerd.grpc.v1.cri".registry.mirrors."'$ADDRESS'"]\n  endpoint = ["http://'$ADDRESS'"]' >> "$containerd_config"
              else
                host_config_dir="$hostpath/$ADDRESS"
                host_config_file="$host_config_dir/hosts.toml"
                echo "Node uses CRI config model V2, adding mirror under $host_config_file..."
                if [[ ! -e "$host_config_file" ]]; then
                  mkdir -p "$host_config_dir"
                  echo -e "server = \"https://$ADDRESS\"\n" > "$host_config_file"
                fi
                echo -e "[host.\"http://$ADDRESS\"]\n  capabilities = [\"pull\", \"resolve\"]\n" >> "$host_config_file"
              fi
              echo "Reloading systemd management configuration"
              systemctl daemon-reload
              echo "Restarting containerd..."
              systemctl restart containerd