# 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.

# Default values for postgresql.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

release_group: null

pod:
  security_context:
    prometheus_postgresql_exporter:
      pod:
        runAsUser: 65534
      container:
        postgresql_exporter:
          readOnlyRootFilesystem: true
          allowPrivilegeEscalation: false
    server:
      pod:
        runAsUser: 999
        # fsGroup used to allows cert file be witten to file.
        fsGroup: 999
        allowPrivilegeEscalation: false
        readOnlyRootFilesystem: true
      container:
        set_volume_perms:
          runAsUser: 0
          readOnlyRootFilesystem: true
        postgresql:
          readOnlyRootFilesystem: true
          allowPrivilegeEscalation: false
        patroni_conversion:
          runAsUser: 999
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
  affinity:
    anti:
      type:
        default: preferredDuringSchedulingIgnoredDuringExecution
      topologyKey:
        default: kubernetes.io/hostname
      weight:
        default: 10
  replicas:
    server: 3
    prometheus_postgresql_exporter: 1
  lifecycle:
    upgrades:
      statefulsets:
        pod_replacement_strategy: OnDelete
        partition: 0
      deployments:
        revision_history: 3
        pod_replacement_strategy: RollingUpdate
        rolling_update:
          max_unavailable: 1
          max_surge: 3
    termination_grace_period:
      prometheus_postgresql_exporter:
        timeout: 30
      server:
        timeout: 180
  resources:
    enabled: false
    server:
      requests:
        memory: "128Mi"
        cpu: "100m"
      limits:
        memory: "1024Mi"
        cpu: "2000m"
    test:
      requests:
        memory: "128Mi"
        cpu: "100m"
      limits:
        memory: "1024Mi"
        cpu: "2000m"
    prometheus_postgresql_exporter:
      limits:
        memory: "1024Mi"
        cpu: "2000m"
      requests:
        memory: "128Mi"
        cpu: "500m"
    jobs:
      image_repo_sync:
        requests:
          memory: "128Mi"
          cpu: "100m"
        limits:
          memory: "1024Mi"
          cpu: "2000m"
      prometheus_postgresql_exporter_create_user:
        limits:
          memory: "1024Mi"
          cpu: "2000m"
        requests:
          memory: "128Mi"
          cpu: "100m"
      postgresql_backup:
        requests:
          memory: "128Mi"
          cpu: "100m"
        limits:
          memory: "1024Mi"
          cpu: "2000m"
      ks_user:
        requests:
          memory: "128Mi"
          cpu: "100m"
        limits:
          memory: "1024Mi"
          cpu: "2000m"

# using dockerhub patroni: https://hub.docker.com/r/openstackhelm/patroni/tags/
images:
  tags:
    postgresql: "docker.io/openstackhelm/patroni:latest-ubuntu_xenial"
    dep_check: quay.io/airshipit/kubernetes-entrypoint:v1.0.0
    image_repo_sync: docker.io/docker:17.07.0
    ks_user: docker.io/openstackhelm/heat:stein-ubuntu_bionic
    prometheus_postgresql_exporter: docker.io/wrouesnel/postgres_exporter:v0.4.6
    prometheus_postgresql_exporter_create_user: "docker.io/postgres:9.5"
    postgresql_backup: "quay.io/airshipit/porthole-postgresql-utility:latest-ubuntu_bionic"
  pull_policy: "IfNotPresent"
  local_registry:
    active: false
    exclude:
      - dep_check
      - image_repo_sync

storage:
  pvc:
    enabled: true
    size: 5Gi
    class_name: general
    class_path: volume.beta.kubernetes.io/storage-class
  host:
    host_path: /data/openstack-helm/postgresql
  mount:
    path: /var/lib/postgresql
    subpath: .

labels:
  server:
    node_selector_key: openstack-control-plane
    node_selector_value: enabled
  test:
    node_selectory_key: openstack-control-plane
    node_selector_value: enabled
  prometheus_postgresql_exporter:
    node_selector_key: openstack-control-plane
    node_selector_value: enabled
  job:
    node_selector_key: openstack-control-plane
    node_selector_value: enabled

dependencies:
  dynamic:
    common:
      local_image_registry:
        jobs:
          - postgresql-image-repo-sync
        services:
          - endpoint: node
            service: local_image_registry
  static:
    backup_postgresql:
      jobs:
        - postgresql-ks-user
    tests:
      services:
        - endpoint: internal
          service: postgresql
    image_repo_sync:
      services:
        - endpoint: internal
          service: local_image_registry
    prometheus_postgresql_exporter_create_user:
      services:
        - endpoint: internal
          service: postgresql
    prometheus_postgresql_exporter:
      services:
        - endpoint: internal
          service: postgresql
      jobs:
        - prometheus-postgresql-exporter-create-user
    postgresql-backup:
      services:
        - endpoint: internal
          service: postgresql

monitoring:
  prometheus:
    enabled: false
    postgresql_exporter:
      scrape: true

volume:
  backup:
    enabled: true
    class_name: general
    size: 5Gi

jobs:
  backup_postgresql:
    # activeDeadlineSeconds == 0 means no deadline
    activeDeadlineSeconds: 0
    backoffLimit: 6
    cron: "0 0 * * *"
    history:
      success: 3
      failed: 1
  ks_user:
    # activeDeadlineSeconds == 0 means no deadline
    activeDeadlineSeconds: 0
    backoffLimit: 6

network_policy:
  postgresql:
    ingress:
      - {}
    egress:
      - {}

conf:
  debug: false
  postgresql:
    shared_buffers: 128MB
    max_connections: 100
  patroni: |
    scope: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
    kubernetes:
      labels:
        application: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
        component: server
      use_endpoints: true
      ports:
      - name: {{ tuple "postgresql" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
        port: {{ tuple "postgresql" "internal" "postgresql" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
    bootstrap:
      users:
        {{ .Values.endpoints.postgresql.auth.admin.username }}:
          password: {{ .Values.endpoints.postgresql.auth.admin.password }}
          options:
          - createrole
          - createdb
      dcs:
        ttl: 30
        loop_wait: 10
        retry_timeout: 10
        maximum_lag_on_failover: 1048576
        postgresql:
          data_dir: '{{ .Values.storage.mount.path }}/pgdata'
          pgpass: '{{ .Values.storage.mount.path }}/pgpass'
          use_pg_rewind: true
          parameters:
            archive_mode: 'off'
            datestyle: 'iso, mdy'
            external_pid_file: '/tmp/postgres.pid'
            hot_standby: 'on'
            log_checkpoints: 'on'
            log_connections: 'on'
            log_disconnections: 'on'
            log_line_prefix: 'postgresql: %t [%p]: [%l-1] %c %x %d %u %a %h %m '
            log_lock_waits: 'on'
            log_temp_files: 0
            log_timezone: 'UTC'
            max_connections: {{ .Values.conf.postgresql.max_connections }}
            max_replication_slots: 10
            max_wal_senders: 10
            max_worker_processes: 10
            ssl: 'on'
            # These relative paths are relative to data_dir
            ssl_cert_file: {{ .Values.secrets.pki.server_cert_path }}/server.crt
            ssl_ca_file: {{ .Values.secrets.pki.server_cert_path }}/ca.crt
            ssl_key_file: {{ .Values.secrets.pki.server_cert_path }}/server.key
            ssl_ciphers: 'HIGH:+3DES:!aNULL'
            tcp_keepalives_idle: 900
            tcp_keepalives_interval: 100
            timezone: 'UTC'
            track_commit_timestamp: 'on'
            track_functions: all
            wal_keep_segments: 8
            wal_level: hot_standby
            wal_log_hints: 'on'
      initdb:
      - auth-host: md5
      - auth-local: trust
      - encoding: UTF8
      - locale: en_US.UTF-8
      - data-checksums
      pg_hba:
      - host all all 127.0.0.1/32 trust
      - host all all 0.0.0.0/0 md5
      - hostssl replication {{ .Values.endpoints.postgresql.auth.replica.username }} {{ .Values.secrets.pki.pod_cidr }} cert clientcert=1
      - hostssl replication {{ .Values.endpoints.postgresql.auth.replica.username }} 127.0.0.1/32 cert clientcert=1
      - local all all trust
    postgresql:
      {{/* Note: the postgres pod mounts a volume at /var/lib/postgresql/data,
           so let's just avoid it and use /var/lib/postgresql/pgdata instead.
           Patroni moves this directory to a backup under the parent directory
           (/var/lib/postgresql) under certain failure recovery scenarios, so
           /var/lib/postgres itself must be exposed to the pod as a pvc mount.*/}}
      authentication:
        superuser:
          username: {{ .Values.endpoints.postgresql.auth.admin.username }}
          password: {{ .Values.endpoints.postgresql.auth.admin.password }}
      data_dir: '{{ .Values.storage.mount.path }}/pgdata'
      pgpass: '{{ .Values.storage.mount.path }}/pgpass'
      callbacks:
        on_role_change: /tmp/set_password.sh
        on_start: /tmp/set_password.sh
      use_pg_rewind: true
      remove_data_directory_on_rewind_failure: true
      remove_data_directory_on_diverged_timelines: true
      parameters:
        archive_mode: 'off'
        datestyle: 'iso, mdy'
        external_pid_file: '/tmp/postgres.pid'
        hot_standby: 'on'
        log_checkpoints: 'on'
        log_connections: 'on'
        log_disconnections: 'on'
        log_line_prefix: 'postgresql: %t [%p]: [%l-1] %c %x %d %u %a %h %m '
        log_lock_waits: 'on'
        log_temp_files: 0
        log_timezone: 'UTC'
        max_connections: {{ .Values.conf.postgresql.max_connections }}
        max_replication_slots: 10
        max_wal_senders: 10
        max_worker_processes: 10
        ssl: 'on'
        # These relative paths are relative to data_dir
        ssl_cert_file: {{ .Values.secrets.pki.server_cert_path }}/server.crt
        ssl_ca_file: {{ .Values.secrets.pki.server_cert_path }}/ca.crt
        ssl_key_file: {{ .Values.secrets.pki.server_cert_path }}/server.key
        ssl_ciphers: 'HIGH:+3DES:!aNULL'
        tcp_keepalives_idle: 900
        tcp_keepalives_interval: 100
        timezone: 'UTC'
        track_commit_timestamp: 'on'
        track_functions: all
        wal_keep_segments: 8
        wal_level: hot_standby
        wal_log_hints: 'on'
      pg_hba:
      - host all all 127.0.0.1/32 trust
      - host all all 0.0.0.0/0 md5
      - hostssl replication {{ .Values.endpoints.postgresql.auth.replica.username }} {{ .Values.secrets.pki.pod_cidr }} cert clientcert=1
      - hostssl replication {{ .Values.endpoints.postgresql.auth.replica.username }} 127.0.0.1/32 cert clientcert=1
      - local all all trust
    watchdog:
      mode: off  # Allowed values: off, automatic, required
  backup:
    enabled: false
    base_path: /var/backup
    days_to_keep: 3
    pg_dumpall_options: null
    remote_backup:
      enabled: false
      container_name: postgresql
      days_to_keep: 14
      storage_policy: default-placement

  exporter:
    queries:
      pg_replication:
        query: "SELECT EXTRACT(epoch FROM (now() - pg_last_xact_replay_timestamp()))::int AS lag, CASE WHEN pg_is_in_recovery() THEN 1 ELSE 0 END AS is_replica"
        master: true
        metrics:
          - lag:
              usage: "GAUGE"
              description: "Replication lag behind master in seconds"
          - is_replica:
              usage: "GAUGE"
              description: "Indicates if this host is a replica"
      pg_postmaster:
        query: "SELECT pg_postmaster_start_time as start_time_seconds from pg_postmaster_start_time()"
        master: true
        metrics:
          - start_time_seconds:
              usage: "GAUGE"
              description: "Time at which postmaster started"

secrets:
  pki:
    client_cert_path: /client_certs
    server_cert_path: /server_certs
    pod_cidr: 0.0.0.0/0
    server:
      hosts:
        names:
          # this name should be the service name for postgresql
          - postgresql.ucp.svc.cluster.local
      life: 365
    replication:
      hosts:
        names:
          # this name needs to be the same as endpoints.postgres.auth.replica.username
          - standby
      life: 365
  postgresql:
    admin: postgresql-admin
    replica: postgresql-replication-pki
    server: postgresql-server-pki
    exporter: postgresql-exporter
    audit: postgresql-audit
  identity:
    admin: keystone-admin-user
    postgresql: postgresql-backup-user

endpoints:
  cluster_domain_suffix: cluster.local
  local_image_registry:
    name: docker-registry
    namespace: docker-registry
    hosts:
      default: localhost
      internal: docker-registry
      node: localhost
    host_fqdn_override:
      default: null
    port:
      registry:
        node: 5000
  postgresql:
    auth:
      admin:
        username: postgres
        password: password
      replica:
        username: standby
      exporter:
        username: psql_exporter
        password: psql_exp_pass
      audit:
        username: audit
        password: password
    hosts:
      default: postgresql
    host_fqdn_override:
      default: null
    path: null
    scheme: postgresql
    port:
      postgresql:
        default: 5432
  postgresql_restapi:
    hosts:
      default: postgresql-restapi
    host_fqdn_override:
      default: null
    path: null
    scheme: postgresql
    port:
      restapi:
        default: 8008
  prometheus_postgresql_exporter:
    namespace: null
    hosts:
      default: postgresql-exporter
    host_fqdn_override:
      default: null
    path:
      default: /metrics
    scheme:
      default: 'http'
    port:
      metrics:
        default: 9187
  identity:
    name: backup-storage-auth
    namespace: openstack
    auth:
      admin:
        # Auth URL of null indicates local authentication
        # HTK will form the URL unless specified here
        auth_url: null
        region_name: RegionOne
        username: admin
        password: password
        project_name: admin
        user_domain_name: default
        project_domain_name: default
      postgresql:
        # Auth URL of null indicates local authentication
        # HTK will form the URL unless specified here
        auth_url: null
        role: admin
        region_name: RegionOne
        username: postgresql-backup-user
        password: password
        project_name: service
        user_domain_name: service
        project_domain_name: service
    hosts:
      default: keystone
      internal: keystone-api
    host_fqdn_override:
      default: null
    path:
      default: /v3
    scheme:
      default: 'http'
    port:
      api:
        default: 80
        internal: 5000

manifests:
  configmap_bin: true
  configmap_etc: true
  job_image_repo_sync: true
  network_policy: false
  job_ks_user: false
  secret_admin: true
  secret_replica: true
  secret_server: true
  secret_etc: true
  secret_audit: true
  service: true
  statefulset: true
  cron_job_postgresql_backup: false
  pvc_backup: false
  monitoring:
    prometheus:
      configmap_bin: true
      configmap_etc: true
      deployment_exporter: true
      job_user_create: true
      secret_etc: true
      service_exporter: true