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: Wait until Keycloak service is ready
  kubernetes.core.k8s_info:
    api_version: apps/v1
    kind: StatefulSet
    name: keycloak
    namespace: auth-system
  register: kube_prometheus_stack_keycloak_service
  retries: 120
  delay: 5
  until:
    - kube_prometheus_stack_keycloak_service.resources[0].status.replicas == kube_prometheus_stack_keycloak_service.resources[0].status.readyReplicas # noqa: yaml[line-length]

- name: Create Keycloak realm
  no_log: true
  run_once: true
  changed_when: false
  community.general.keycloak_realm:
    # Keycloak settings
    auth_keycloak_url: "{{ kube_prometheus_stack_keycloak_server_url }}"
    auth_realm: "{{ kube_prometheus_stack_keycloak_admin_realm_name }}"
    auth_client_id: "{{ kube_prometheus_stack_keycloak_admin_client_id }}"
    auth_username: "{{ kube_prometheus_stack_keycloak_admin_user }}"
    auth_password: "{{ kube_prometheus_stack_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    id: "{{ kube_prometheus_stack_keycloak_realm }}"
    realm: "{{ kube_prometheus_stack_keycloak_realm }}"
    display_name: "{{ kube_prometheus_stack_keycloak_realm_name }}"
    enabled: true

- name: Add client roles in "id_token"
  no_log: true
  run_once: true
  changed_when: false
  community.general.keycloak_clientscope:
    # Keycloak settings
    auth_keycloak_url: "{{ kube_prometheus_stack_keycloak_server_url }}"
    auth_realm: "{{ kube_prometheus_stack_keycloak_admin_realm_name }}"
    auth_client_id: "{{ kube_prometheus_stack_keycloak_admin_client_id }}"
    auth_username: "{{ kube_prometheus_stack_keycloak_admin_user }}"
    auth_password: "{{ kube_prometheus_stack_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Client scope settings
    name: roles
    realm: "{{ kube_prometheus_stack_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: Retrieve "etcd" CA certificate
  run_once: true
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/ca.crt
  register: _etcd_ca_crt

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

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

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

      - 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: Generate client secret passwords
  run_once: true
  kubernetes.core.k8s:
    state: present
    definition:
      apiVersion: secretgen.k14s.io/v1alpha1
      kind: Password
      metadata:
        name: "{{ kube_prometheus_stack_helm_release_name }}-{{ item.id }}-client-secret"
        namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
      spec:
        length: 64
    wait: true
    wait_timeout: 60
    wait_condition:
      type: ReconcileSucceeded
      status: true
  register: kube_prometheus_stack_client_secret_passwords
  loop: "{{ kube_prometheus_stack_keycloak_clients }}"
  loop_control:
    label: "{{ item.id }}"

- name: Collect all client secrets
  run_once: true
  kubernetes.core.k8s_info:
    kind: Secret
    namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
    name: "{{ password.result.metadata.name }}"
  register: kube_prometheus_stack_client_secrets
  loop: "{{ kube_prometheus_stack_client_secret_passwords.results }}"
  loop_control:
    label: "{{ password.item.id }}"
    loop_var: password

- name: Create Keycloak clients
  no_log: true
  run_once: true
  community.general.keycloak_client:
    # Keycloak settings
    auth_keycloak_url: "{{ kube_prometheus_stack_keycloak_server_url }}"
    auth_realm: "{{ kube_prometheus_stack_keycloak_admin_realm_name }}"
    auth_client_id: "{{ kube_prometheus_stack_keycloak_admin_client_id }}"
    auth_username: "{{ kube_prometheus_stack_keycloak_admin_user }}"
    auth_password: "{{ kube_prometheus_stack_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    realm: "{{ kube_prometheus_stack_keycloak_realm }}"
    client_id: "{{ secret.password.item.id }}"
    secret: "{{ secret.resources[0].data.password | b64decode }}"
    redirect_uris: "{{ secret.password.item.redirect_uris }}"
    protocol_mappers:
      - name: "aud-mapper-{{ secret.password.item.id }}"
        protocol: openid-connect
        protocolMapper: oidc-audience-mapper
        config:
          included.client.audience: "{{ secret.password.item.id }}"
          access.token.claim: true

  loop: "{{ kube_prometheus_stack_client_secrets.results }}"
  loop_control:
    label: "{{ secret.password.item.id }}"
    loop_var: secret

- name: Create Keycloak roles
  no_log: true
  run_once: true
  community.general.keycloak_role:
    # Keycloak settings
    auth_keycloak_url: "{{ kube_prometheus_stack_keycloak_server_url }}"
    auth_realm: "{{ kube_prometheus_stack_keycloak_admin_realm_name }}"
    auth_client_id: "{{ kube_prometheus_stack_keycloak_admin_client_id }}"
    auth_username: "{{ kube_prometheus_stack_keycloak_admin_user }}"
    auth_password: "{{ kube_prometheus_stack_keycloak_admin_password }}"
    validate_certs: "{{ cluster_issuer_type != 'self-signed' }}"
    # Realm settings
    realm: "{{ kube_prometheus_stack_keycloak_realm }}"
    client_id: "{{ item.0.id }}"
    name: "{{ item.1 }}"
  loop: "{{ kube_prometheus_stack_keycloak_clients | subelements('roles') }}"
  loop_control:
    label: "{{ item.0.id }}-{{ item.1 }}"

- name: Generate cookie secrets
  run_once: true
  kubernetes.core.k8s:
    state: present
    definition:
      apiVersion: secretgen.k14s.io/v1alpha1
      kind: Password
      metadata:
        name: "{{ kube_prometheus_stack_helm_release_name }}-{{ item.id }}-cookie-secret"
        namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
      spec:
        length: 32
    wait: true
    wait_timeout: 60
    wait_condition:
      type: ReconcileSucceeded
      status: true
  loop: "{{ kube_prometheus_stack_keycloak_clients | selectattr('oauth2_proxy', 'equalto', true) }}"
  loop_control:
    label: "{{ item.id }}"

- name: Generate OAuth2 proxy configuration
  run_once: true
  kubernetes.core.k8s:
    state: present
    definition:
      apiVersion: secretgen.carvel.dev/v1alpha1
      kind: SecretTemplate
      metadata:
        name: "{{ kube_prometheus_stack_helm_release_name }}-{{ item.id }}-oauth2-proxy"
        namespace: "{{ kube_prometheus_stack_helm_release_namespace }}"
      spec:
        inputResources:
          - name: client-secret
            ref:
              apiVersion: v1
              kind: Secret
              name: "{{ kube_prometheus_stack_helm_release_name }}-{{ item.id }}-client-secret"
          - name: cookie-secret
            ref:
              apiVersion: v1
              kind: Secret
              name: "{{ kube_prometheus_stack_helm_release_name }}-{{ item.id }}-cookie-secret"
        template:
          stringData:
            OAUTH2_PROXY_UPSTREAMS: "http://127.0.0.1:{{ item.port }}"
            OAUTH2_PROXY_HTTP_ADDRESS: "0.0.0.0:8081"
            OAUTH2_PROXY_METRICS_ADDRESS: "0.0.0.0:8082"
            OAUTH2_PROXY_EMAIL_DOMAINS: "*"
            OAUTH2_PROXY_REVERSE_PROXY: "true"
            OAUTH2_PROXY_SKIP_PROVIDER_BUTTON: "true"
            OAUTH2_PROXY_SSL_INSECURE_SKIP_VERIFY: "{{ (cluster_issuer_type == 'self-signed') | string }}"
            OAUTH2_PROXY_PROVIDER: "keycloak-oidc"
            OAUTH2_PROXY_CLIENT_ID: "{{ item.id }}"
            OAUTH2_PROXY_REDIRECT_URL: "{{ item.redirect_uris.0 }}"
            OAUTH2_PROXY_OIDC_ISSUER_URL: "{{ kube_prometheus_stack_keycloak_server_url }}/realms/{{ kube_prometheus_stack_keycloak_realm }}"
            OAUTH2_PROXY_ALLOWED_ROLE: "{{ item.id }}:{{ item.roles[0] }}"
            OAUTH2_PROXY_CODE_CHALLENGE_METHOD: "S256"
          data:
            OAUTH2_PROXY_COOKIE_SECRET: "$(.cookie-secret.data.password)"
            OAUTH2_PROXY_CLIENT_SECRET: "$(.client-secret.data.password)"
    wait: true
    wait_timeout: 60
    wait_condition:
      type: ReconcileSucceeded
      status: true
  loop: "{{ kube_prometheus_stack_keycloak_clients | selectattr('oauth2_proxy', 'equalto', true) }}"
  loop_control:
    label: "{{ item.id }}"

- name: Create certificate issuer
  kubernetes.core.k8s:
    state: present
    definition:
      - apiVersion: cert-manager.io/v1
        kind: Certificate
        metadata:
          name: kube-prometheus-stack-ca
          namespace: cert-manager
        spec:
          commonName: kube-prometheus-stack
          duration: 87600h0m0s
          isCA: true
          issuerRef:
            group: cert-manager.io
            kind: ClusterIssuer
            name: self-signed
          privateKey:
            algorithm: ECDSA
            size: 256
          renewBefore: 720h0m0s
          secretName: kube-prometheus-stack-ca

      - apiVersion: cert-manager.io/v1
        kind: ClusterIssuer
        metadata:
          name: kube-prometheus-stack
        spec:
          ca:
            secretName: kube-prometheus-stack-ca

- 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 additional dashboards
  run_once: true
  kubernetes.core.k8s:
    state: "{{ item.state }}"
    template: configmap-dashboard.yaml.j2
  loop:
    - name: goldpinger
      state: present
    - name: node-exporter-full
      state: present
    - name: ceph-cluster
      state: present
    - name: ceph-cluster-advanced
      state: present
    - name: hosts-overview
      state: present
    - name: host-details
      state: present
    - name: pool-overview
      state: present
    - name: pool-detail
      state: present
    - name: osds-overview
      state: present
    - name: osd-device-details
      state: present
    - name: rbd-overview
      state: present
    - name: rbd-details
      state: present
  tags:
    - kube-prometheus-stack-dashboards

- 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: "{{ kube_prometheus_stack_helm_kubeconfig }}"
    values: "{{ _kube_prometheus_stack_helm_values | combine(kube_prometheus_stack_helm_values, recursive=True) }}"