Vonng/pigsty

Citus cluster HA not work

Opened this issue · 1 comments

forever765 commented

环境信息

共4台机器

  • 1 * coordinator master
  • 1 * coordinator slave (streaming replication)
  • 2 * citus data node

本地表正常

  1. coordinator master 上创建本地表 test，coordinator slave 能正常同步 test 表内容
    1. master 停机后，slave 能正常读写 test 表；
    2. master 重新开机，能正常把 test 表已修改的内容同步到本实例

Citus 分片表异常

  1. coordinator master 上创建 citus 分片表 test2，master 实例读写正常
    1. slave 无法读取该表内容，报错 ERROR: connection to the remote node 192.168.12.8:5432 faled with the following error: fe sendauth: no password supplied
    2. master 停机，slave 无法读取 test2，报错同上
    3. master 重新开机，master 实例也出现如上报错，2个data node 仅能提供 ro 服务
-- 创建 citus 分片表
set citus.shard_count=2;
set citus.shard_replication_factor=2;
create table test2(id int primary key ,name varchar);
SELECT create_distributed_table('test2', 'id', 'hash');
insert into test2 select id,md5(random()::text) from generate_series(1,500) as id;

预期结果

Citus分片表高可用功能正常工作

pigsty.yml 配置

all:
  children:

    #----------------------------------#
    # infra: monitor, alert, repo, etc..
    #----------------------------------#
    infra: { hosts: { 192.168.12.6: { infra_seq: 1 } }}
      #hosts:
       # 192.168.12.6: { infra_seq:: 1 }  # etcd_seq required
       # 192.168.12.7: { infra_seq:: 2 }  # assign from 1 ~ n
       # 192.168.12.8: { infra_seq:: 3 }  # odd number please


    #----------------------------------#
    # etcd cluster for HA postgres DCS
    #----------------------------------#
    etcd: # { hosts: { 192.168.12.6: { etcd_seq: 1 } }, vars: { etcd_cluster: etcd } }
      hosts:  # 1 node for testing, 3 or 5 for production
        192.168.12.6: { etcd_seq: 1 }  # etcd_seq required
        192.168.12.7: { etcd_seq: 2 }  # assign from 1 ~ n
        192.168.12.8: { etcd_seq: 3 }  # odd number please
      vars: # cluster level parameter override roles/etcd
        etcd_cluster: etcd  # mark etcd cluster name etcd

    #----------------------------------#
    # minio (OPTIONAL backup repo)
    #----------------------------------#
    #minio: { hosts: { 192.168.12.6: { minio_seq: 1 } }, vars: { minio_cluster: minio } }

    pg-citus0:
      hosts:
        192.168.12.6: { pg_seq: 1, pg_role: primary }
        192.168.12.5: { pg_seq: 2, pg_role: replica }
      vars:
        pg_cluster: pg-citus0
        pg_group: 0
        pg_mode: citus                    # pgsql cluster mode: citus
        pg_shard: pg-citus                # citus shard name: pg-citus
        patroni_citus_db: meta            # citus distributed database name
        pg_dbsu_password: DBUser.Postgres # all dbsu password access for citus cluster
        pg_vip_enabled: true
        pg_vip_address: 192.168.12.100/16
        pg_vip_interface: eth0
        pg_extensions: [ 'citus_${pg_version}* postgis33_${pg_version}* timescaledb-2-postgresql-${pg_version}* pgvector_${pg_version}*' ]
        pg_libs: 'citus, timescaledb, pg_stat_statements, auto_explain' # citus will be added by patroni automatically
        pg_users:  [{ name: test_admin , password: test_admin , pgbouncer: true , roles: [ dbrole_admin ] }, { name: test_rw , password: test_rw , pgbouncer: true , roles: [ dbrole_readwrite ] }, { name: test_ro , password: test_ro , pgbouncer: true , roles: [ dbrole_readonly ] }]
        pg_databases:  [{ name: haha-test ,owner: test_admin ,extensions: [{name: citus}, {name: postgis}] }]
        pg_hba_rules:
          - { user: 'all' ,db: all  ,addr: 0.0.0.0/0 ,auth: trust ,title: 'trust citus cluster members'       }
          - { user: 'all' ,db: all  ,addr: 127.0.0.1/32  ,auth: ssl   ,title: 'all user ssl access from localhost' }
          - { user: 'all' ,db: all  ,addr: intra         ,auth: ssl   ,title: 'all user ssl access from intranet'  }

    pg-citus1: # citus data node 1, pg_group = 1
      hosts:
        192.168.12.7: { pg_seq: 1, pg_role: primary }
      vars:
        pg_cluster: pg-citus1
        pg_group: 1
        pg_mode: citus                    # pgsql cluster mode: citus
        pg_shard: pg-citus                # citus shard name: pg-citus
        patroni_citus_db: meta             # citus distributed database name
        pg_dbsu_password: DBUser.Postgres # all dbsu password access for citus cluster
        pg_vip_enabled: false
        pg_vip_address: 192.168.12.101/16
        pg_vip_interface: eth0
        pg_extensions: [ 'citus_${pg_version}* postgis33_${pg_version}* timescaledb-2-postgresql-${pg_version}* pgvector_${pg_version}*' ]
        pg_libs: 'citus, timescaledb, pg_stat_statements, auto_explain' # citus will be added by patroni automatically
        pg_users:  [{ name: test_admin , password: test_admin , pgbouncer: true , roles: [ dbrole_admin ] }, { name: test_rw , password: test_rw , pgbouncer: true , roles: [ dbrole_readwrite ] }, { name: test_ro , password: test_ro , pgbouncer: true , roles: [ dbrole_readonly ] }]
        pg_databases:  [{ name: haha-test ,owner: test_admin ,extensions: [{name: citus}, {name: postgis}] }]
        pg_hba_rules:
          - { user: 'all' ,db: all  ,addr: 0.0.0.0/0 ,auth: trust ,title: 'trust citus cluster members'        }
          - { user: 'all' ,db: all  ,addr: 127.0.0.1/32  ,auth: ssl   ,title: 'all user ssl access from localhost' }
          - { user: 'all' ,db: all  ,addr: intra         ,auth: ssl   ,title: 'all user ssl access from intranet'  }

    pg-citus2: # citus data node 1, pg_group = 1
      hosts:
        192.168.12.8: { pg_seq: 1, pg_role: primary }
      vars:
        pg_cluster: pg-citus2
        pg_group: 2
        pg_mode: citus                    # pgsql cluster mode: citus
        pg_shard: pg-citus                # citus shard name: pg-citus
        patroni_citus_db: meta             # citus distributed database name
        pg_dbsu_password: DBUser.Postgres # all dbsu password access for citus cluster
        pg_vip_enabled: false
        pg_vip_address: 192.168.12.102/16
        pg_vip_interface: eth0
        pg_extensions: [ 'citus_${pg_version}* postgis33_${pg_version}* timescaledb-2-postgresql-${pg_version}* pgvector_${pg_version}*' ]
        pg_libs: 'citus, timescaledb, pg_stat_statements, auto_explain' # citus will be added by patroni automatically
        pg_users:  [{ name: test_admin , password: test_admin , pgbouncer: true , roles: [ dbrole_admin ] }, { name: test_rw , password: test_rw , pgbouncer: true , roles: [ dbrole_readwrite ] }, { name: test_ro , password: test_ro , pgbouncer: true , roles: [ dbrole_readonly ] }]
        pg_databases:  [{ name: haha-test ,owner: test_admin ,extensions: [{name: citus}, {name: postgis}] }]
        pg_hba_rules:
          - { user: 'all' ,db: all  ,addr: 0.0.0.0/0 ,auth: trust ,title: 'trust citus cluster members'        }
          - { user: 'all' ,db: all  ,addr: 127.0.0.1/32  ,auth: ssl   ,title: 'all user ssl access from localhost' }
          - { user: 'all' ,db: all  ,addr: intra         ,auth: ssl   ,title: 'all user ssl access from intranet'  }


  #----------------------------------#
  # GLOBAL VARS
  #----------------------------------#
  vars:                               # global parameters
    version: v2.6.0                   # pigsty version string
    admin_ip: 192.168.12.6             # admin node ip address
    region: china                     # upstream mirror region: default,china,europe
    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: "${admin_ip}:3100" }
      #minio        : { domain: sss.pigsty  ,endpoint: "${admin_ip}:9001" ,scheme: https ,websocket: true }
      
......
Vonng commented

I'll look into it. Usually this is releated to pg_dbsu_password and .pgpass