# Copyright 2019 The Openstack-Helm Authors.
#
# 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
      container:
        set_volume_perms:
          runAsUser: 0
          readOnlyRootFilesystem: true
        postgresql:
          readOnlyRootFilesystem: true
          allowPrivilegeEscalation: false
        patroni_conversion:
          runAsUser: 999
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
      pod:
        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
  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"

# 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/stackanetes/kubernetes-entrypoint:v0.3.1
    image_repo_sync: docker.io/docker:17.07.0
    prometheus_postgresql_exporter: docker.io/wrouesnel/postgres_exporter:v0.4.6
    prometheus_postgresql_exporter_create_user: "docker.io/postgres:9.5"
    postgresql_backup: "docker.io/postgres:9.5"
  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:
    postgresql:
      jobs: null
    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:
    cron: "0 0 * * *"
    history:
      success: 3
      failed: 1

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:
      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: 'on'
            archive_timeout: 1800s
            autovacuum_analyze_scale_factor: 0.02
            autovacuum_max_workers: 5
            autovacuum_vacuum_scale_factor: 0.05
            checkpoint_completion_target: 0.9
            datestyle: 'iso, mdy'
            default_text_search_config: 'pg_catalog.english'
            external_pid_file: '/tmp/postgres.pid'
            hot_standby: 'on'
            lc_messages: 'en_US.utf8'
            lc_monetary: 'en_US.utf8'
            lc_numeric: 'en_US.utf8'
            lc_time: 'en_US.utf8'
            log_autovacuum_min_duration: 0
            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_min_duration_statement: 500
            log_statement: none
            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
            tcp_keepalives_idle: 900
            tcp_keepalives_interval: 100
            timezone: 'UTC'
            track_commit_timestamp: 'on'
            track_functions: all
            wal_keep_segments: 100
            wal_level: 'logical'
            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
      - host replication {{ .Values.endpoints.postgresql.auth.replica.username }} 127.0.0.1/32 md5  # Fixes issue with Postgres 9.5
      - host replication {{ .Values.endpoints.postgresql.auth.replica.username }} POD_IP_PATTERN/0 md5
      - local replication {{ .Values.endpoints.postgresql.auth.admin.username }} md5
      - 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.*/}}
      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
      parameters:
        archive_mode: 'on'
        archive_timeout: 1800s
        autovacuum_analyze_scale_factor: 0.02
        autovacuum_max_workers: 5
        autovacuum_vacuum_scale_factor: 0.05
        checkpoint_completion_target: 0.9
        datestyle: 'iso, mdy'
        default_text_search_config: 'pg_catalog.english'
        external_pid_file: '/tmp/postgres.pid'
        hot_standby: 'on'
        lc_messages: 'en_US.utf8'
        lc_monetary: 'en_US.utf8'
        lc_numeric: 'en_US.utf8'
        lc_time: 'en_US.utf8'
        log_autovacuum_min_duration: 0
        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_min_duration_statement: 500
        log_statement: none
        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
        tcp_keepalives_idle: 900
        tcp_keepalives_interval: 100
        timezone: 'UTC'
        track_commit_timestamp: 'on'
        track_functions: all
        shared_buffers: {{ .Values.conf.postgresql.shared_buffers }}
        wal_keep_segments: 100
        wal_level: 'logical'
        wal_log_hints: 'on'
      pg_hba:
      - host all all 127.0.0.1/32 trust
      - host all all 0.0.0.0/0 md5
      - host replication {{ .Values.endpoints.postgresql.auth.replica.username }} 127.0.0.1/32 md5  # Fixes issue with Postgres 9.5
      - host replication {{ .Values.endpoints.postgresql.auth.replica.username }} POD_IP_PATTERN/0 md5
      - local replication {{ .Values.endpoints.postgresql.auth.admin.username }} md5
      - local all all trust
    watchdog:
      mode: off  # Allowed values: off, automatic, required
  backup:
    enabled: true
    base_path: /var/backup
    days_of_backup_to_keep: 3
    pg_dumpall_options: null

secrets:
  postgresql:
    admin: postgresql-admin
    replica: postgresql-replication
    exporter: postgresql-exporter

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
        password: password
      exporter:
        username: psql_exporter
        password: psql_exp_pass
    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

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