roles/kube_prometheus_stack/tasks/main.yml

# Copyright (c) 2022 VEXXHOST, Inc.
#
# 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
#
#      http://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.

- name: Create Keycloak realm
  no_log: true
  become: false
  delegate_to: localhost
  changed_when: false
  community.general.keycloak_realm:
    # Keycloak settings
    auth_keycloak_url: "{{ grafana_keycloak_server_url }}"
    auth_realm: "{{ grafana_keycloak_user_realm_name }}"
    auth_client_id: "{{ grafana_keycloak_admin_client_id }}"
    auth_username: "{{ grafana_keycloak_admin_user }}"
    auth_password: "{{ grafana_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    id: "{{ grafana_keycloak_realm }}"
    realm: "{{ grafana_keycloak_realm }}"
    display_name: "{{ grafana_keycloak_realm_name }}"
    enabled: true

- name: Add client roles in "id_token"
  no_log: true
  become: false
  delegate_to: localhost
  changed_when: false
  community.general.keycloak_clientscope:
    # Keycloak settings
    auth_keycloak_url: "{{ grafana_keycloak_server_url }}"
    auth_realm: "{{ grafana_keycloak_user_realm_name }}"
    auth_client_id: "{{ grafana_keycloak_admin_client_id }}"
    auth_username: "{{ grafana_keycloak_admin_user }}"
    auth_password: "{{ grafana_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Client scope settings
    name: roles
    realm: "{{ grafana_keycloak_realm }}"
    protocol_mappers:
      - name: client roles
        protocol: openid-connect
        protocolMapper: oidc-usermodel-client-role-mapper
        config:
          claim.name: "resource_access.${client_id}.roles"
          access.token.claim: true
          id.token.claim: true
          multivalued: true

- name: Create Keycloak client
  no_log: true
  become: false
  run_once: true
  delegate_to: localhost
  community.general.keycloak_client:
    # Keycloak settings
    auth_keycloak_url: "{{ grafana_keycloak_server_url }}"
    auth_realm: "{{ grafana_keycloak_user_realm_name }}"
    auth_client_id: "{{ grafana_keycloak_admin_client_id }}"
    auth_username: "{{ grafana_keycloak_admin_user }}"
    auth_password: "{{ grafana_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    realm: "{{ grafana_keycloak_realm }}"
    client_id: "{{ grafana_keycloak_client_id }}"
    secret: "{{ grafana_keycloak_client_secret }}"
    redirect_uris:
      - "https://{{ kube_prometheus_stack_grafana_host }}/login/generic_oauth"

- name: Create Keycloak roles
  no_log: true
  become: false
  run_once: true
  delegate_to: localhost
  community.general.keycloak_role:
    # Keycloak settings
    auth_keycloak_url: "{{ grafana_keycloak_server_url }}"
    auth_realm: "{{ grafana_keycloak_user_realm_name }}"
    auth_client_id: "{{ grafana_keycloak_admin_client_id }}"
    auth_username: "{{ grafana_keycloak_admin_user }}"
    auth_password: "{{ grafana_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    realm: "{{ grafana_keycloak_realm }}"
    client_id: "{{ grafana_keycloak_client_id }}"
    name: "{{ item }}"
  loop: ["admin", "editor", "viewer"]

- name: Retrieve "etcd" CA certificate
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/ca.crt
  register: _etcd_ca_crt

- name: Retrieve "etcd" client certificate
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/healthcheck-client.crt
  register: _etcd_healthcheck_client_crt

- name: Retrieve "etcd" client key
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/healthcheck-client.key
  register: _etcd_healthcheck_client_key

- name: Uninstall the legacy "ethtool-exporter"
  kubernetes.core.k8s:
    state: absent
    api_version: v1
    kind: DaemonSet
    name: ethtool-exporter
    namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"

- name: Uninstall the legacy HelmRelease
  run_once: true
  block:
    - name: Suspend the existing HelmRelease
      failed_when: false
      kubernetes.core.k8s:
        state: patched
        api_version: helm.toolkit.fluxcd.io/v2beta1
        kind: HelmRelease
        name: "{{ kube_prometheus_stack_helm_release_name }}"
        namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
        definition:
          spec:
            suspend: true

    - name: Remove the existing HelmRelease
      failed_when: false
      kubernetes.core.k8s:
        state: absent
        api_version: helm.toolkit.fluxcd.io/v2beta1
        kind: HelmRelease
        name: "{{ kube_prometheus_stack_helm_release_name }}"
        namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"

- name: Create secrets for monitoring
  kubernetes.core.k8s:
    state: present
    definition:
      - apiVersion: v1
        kind: Namespace
        metadata:
          name: "{{ kube_prometheus_stack_helm_release_namespace }}"

      - apiVersion: v1
        kind: Secret
        metadata:
          name: grafana-auth-generic-oauth-secret
          namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
        stringData:
          client_id: "{{ grafana_keycloak_client_id }}"
          client_secret: "{{ grafana_keycloak_client_secret }}"

      - apiVersion: v1
        kind: Secret
        metadata:
          name: kube-prometheus-stack-etcd-client-cert
          namespace: monitoring
        data:
          ca.crt: "{{ _etcd_ca_crt.content }}"
          healthcheck-client.crt: "{{ _etcd_healthcheck_client_crt.content }}"
          healthcheck-client.key: "{{ _etcd_healthcheck_client_key.content }}"

- name: Install all CRDs
  run_once: true
  changed_when: false
  kubernetes.core.k8s:
    state: present
    definition: "{{ lookup('pipe', 'cat ' + role_path + '/../../charts/kube-prometheus-stack/charts/crds/crds/crd-*.yaml') | regex_replace('- =$', '- \"=\"', multiline=True) | from_yaml_all }}" # noqa: yaml[line-length]
    apply: true
    server_side_apply:
      field_manager: atmosphere
      force_conflicts: true
  tags:
    - kube-prometheus-stack-crds

- name: Deploy Helm chart
  run_once: true
  kubernetes.core.helm:
    name: "{{ kube_prometheus_stack_helm_release_name }}"
    chart_ref: "{{ kube_prometheus_stack_helm_chart_ref }}"
    release_namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
    create_namespace: true
    kubeconfig: /etc/kubernetes/admin.conf
    values: "{{ _kube_prometheus_stack_helm_values | combine(kube_prometheus_stack_helm_values, recursive=True) }}"