4-node: polar

./configure -c polar

all:
  children:

    # infra cluster for proxy, monitor, alert, etc..
    infra: { hosts: { 10.10.10.10: { infra_seq: 1 } }}

    # etcd cluster for ha postgres
    etcd: { hosts: { 10.10.10.10: { etcd_seq: 1 } }, vars: { etcd_cluster: etcd } }

    # postgres example cluster: pg-meta
    pg-meta:
      hosts: { 10.10.10.10: { pg_seq: 1, pg_role: primary } }
      vars:
        pg_cluster: pg-meta
        pg_users:
          - {name: dbuser_meta     ,password: DBUser.Meta     ,pgbouncer: true ,roles: [dbrole_admin]    ,comment: pigsty admin user }
          - {name: dbuser_view     ,password: DBUser.Viewer   ,pgbouncer: true ,roles: [dbrole_readonly] ,comment: read-only viewer for meta database }
        pg_databases:
          - {name: meta ,baseline: cmdb.sql ,comment: pigsty meta database ,schemas: [pigsty]}
        pg_hba_rules:
          - {user: dbuser_view , db: all ,addr: infra ,auth: pwd ,title: 'allow grafana dashboard access cmdb from infra nodes'}
        pg_vip_enabled: true
        pg_vip_address: 10.10.10.2/24
        pg_vip_interface: eth1

    # pgsql 3 node ha cluster: pg-test
    pg-test:
      hosts:
        10.10.10.11: { pg_seq: 1, pg_role: primary }   # primary instance, leader of cluster
        10.10.10.12: { pg_seq: 2, pg_role: replica }   # replica instance, follower of leader
        10.10.10.13: { pg_seq: 3, pg_role: replica, pg_offline_query: true } # replica with offline access
      vars:
        pg_cluster: pg-test           # define pgsql cluster name
        pg_users:  [{ name: test , password: test , pgbouncer: true , roles: [ dbrole_admin ] }]
        pg_databases: [{ name: test }]
        pg_vip_enabled: true
        pg_vip_address: 10.10.10.3/24
        pg_vip_interface: eth1

  vars:                               # global variables
    version: v3.1.0                   # pigsty version string
    admin_ip: 10.10.10.10             # admin node ip address
    region: default                   # upstream mirror region: default|china|europe
    node_tune: oltp                   # node tuning specs: oltp,olap,tiny,crit
    pg_conf: oltp.yml                 # pgsql tuning specs: {oltp,olap,tiny,crit}.yml
    infra_portal:                     # domain names and upstream servers
      home         : { domain: h.pigsty }
      grafana      : { domain: g.pigsty ,endpoint: "${admin_ip}:3000" , websocket: true }
      prometheus   : { domain: p.pigsty ,endpoint: "${admin_ip}:9090" }
      alertmanager : { domain: a.pigsty ,endpoint: "${admin_ip}:9093" }
      blackbox     : { endpoint: "${admin_ip}:9115" }
      loki         : { endpoint: "${admin_ip}:3100" }

    #----------------------------------#
    # NODE, PGSQL, PolarDB
    #----------------------------------#
    # THIS SPEC REQUIRE AN AVAILABLE POLARDB KERNEL IN THE LOCAL REPO!
    pg_version: 15
    pg_packages: [ 'polardb patroni pgbouncer pgbackrest pg_exporter pgbadger vip-manager' ]
    pg_extensions: [ ]                # do not install any vanilla postgresql extensions
    pg_mode: polar                    # polardb compatible mode
    pg_exporter_exclude_database: 'template0,template1,postgres,polardb_admin'
    pg_default_roles:                 # default roles and users in postgres cluster
      - { name: dbrole_readonly  ,login: false ,comment: role for global read-only access     }
      - { name: dbrole_offline   ,login: false ,comment: role for restricted read-only access }
      - { name: dbrole_readwrite ,login: false ,roles: [dbrole_readonly] ,comment: role for global read-write access }
      - { name: dbrole_admin     ,login: false ,roles: [pg_monitor, dbrole_readwrite] ,comment: role for object creation }
      - { name: postgres     ,superuser: true  ,comment: system superuser }
      - { name: replicator   ,superuser: true  ,replication: true ,roles: [pg_monitor, dbrole_readonly] ,comment: system replicator } # <- superuser is required for replication
      - { name: dbuser_dba   ,superuser: true  ,roles: [dbrole_admin]  ,pgbouncer: true ,pool_mode: session, pool_connlimit: 16 ,comment: pgsql admin user }
      - { name: dbuser_monitor ,roles: [pg_monitor] ,pgbouncer: true ,parameters: {log_min_duration_statement: 1000 } ,pool_mode: session ,pool_connlimit: 8 ,comment: pgsql monitor user }

    repo_packages: [ node-bootstrap, infra-package, infra-addons, node-package1, node-package2, pgsql-utility ]
    repo_extra_packages: [ polardb ] # replace vanilla postgres kernel with polardb kernel