manifests/hgate/istio-system-discovery-rbac.yaml

# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Allow all system-authenticated KSAs to read the mesh config and root cert in istio-system for MCP.
# The config is indirectly available to pods via injection, no secrets inside.
# Istiod public cert is replicated in all namespaces and available - reading the one in istio-system to avoid
# replication details. In future we should be able to use this method instead of having the replication controller.

apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  namespace: istio-system
  name: istio-autoconf
rules:
  - apiGroups: [ "" ]
    resources:
      - "configmaps"
    resourceNames:
      # mesh-env config map is auto-created if it doesn't exist, will include
      # mesh-specific settings needed to connect to the mesh
      # The values can also be specified as env variables on the workload.
      # For Istio, it is a subset of the internal env variables used by injection
      - "mesh-env"

      # Temp - will be replaced by mesh-env
      - "env-asm-managed"
      - "istio-ca-root-cert"
      - "istio"
    verbs:
      - "get"

  # Temp - used to find connector internal/external LB IP.
  # Will be included in mesh-env
  - apiGroups: [ "" ]
    resources:
      - "services"
    verbs:
      - "get"
      - "list"
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  namespace: istio-system
  name: istio-autoconf-all
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: istio-autoconf
subjects:
  - kind: Group
    name: system:authenticated
    apiGroup: rbac.authorization.k8s.io