postgres=#selectpg_create_physical_replication_slot('abce'); 删除复制槽: 1 postgres=#selectpg_drop_replication_slot('abce'); 1.主库端 (1)查看复制连接的状态 pg_stat_replication =# select * from pg_stat_replication; -[ RECORD 1 ]---+--- pid | 2327 usesysid | 10 usename | mdevan ...
[postgres@localhost pg952]$ psql -h 192.168.230.128 -p 5432 -U postgres psql (9.5.2) Type "help" for help. postgres=# \x Expanded display is on. postgres=# select * from pg_replication_slots; -[ RECORD 1 ]+--- slot_name | slot1 plugin | slot_type | physical datoid | databas...
There is a catalog view calledpg_replication_slotswhich gives you information about these slots: postgres=# select slot_name,restart_lsn from pg_replication_slots; slot_name | restart_lsn ---+--- slot1 | 0/19000000 (1 row) PostgreSQL will not remove WAL files prior to “restart_lsn”, ...
[pg13@ydtf01 ~]$ ls $PGDATA/pg_wal| wc -l 86 [pg13@ydtf01 ~]$ ls $PGDATA/pg_wal| wc -l 88 [pg13@ydtf01 ~]$ ls $PGDATA/pg_wal| wc -l 91 [pg13@ydtf01 ~]$ ls $PGDATA/pg_wal| wc -l 91 [pg13@ydtf01 ~]$ ls $PGDATA/pg_wal| wc -l 95 [pg13@ydtf01 ...
② pg_basebackup方式部署 本次将介绍pg_basebackup方式部署。 1.两台都要安装postgresql 2.主库创建创建Replication用户(以下都是主库操作) CREATE ROLE rep login replication password 'rep'; 1. 修改master的pg_hba.conf文件: 修改Master库数据库配置(postgresql.conf) ...
(1 row) postgres=# // 主库查看复制槽位信息 postgres=# select slot_name, slot_type, active, wal_status from pg_replication_slots; slot_name | slot_type | active | wal_status ---+---+---+--- my_subscription | logical | t | reserved (2 rows) 本文参与 腾讯云自媒体同步曝光计划,分...
max_replication_slots = 8 1. 2. 3. 创建逻辑复制用户 [postgres@pg01 data]$ psql create user luser replication login connection limit 8 encrypted password '123456'; 1. 2. 3. 4. 5. 6. 7. 创建测试表 创建要复制的表,并插入一条测试数据 ...
可以手动在主库创建物理复制槽,也可以不创建,在备库使用 pg_basebackup 创建备份时指定参数 -C -S 来创建复制槽。手动创建复制槽的 SQL 语句如下: select * from pg_create_physical_replication_slot('slot_s1'); 2、查看复制槽信息 select * from pg_replication_slots; ...
因此,建议您定期比较 pg_stat_replication 和 pg_replication_slots 是否存在值得进一步调查的不匹配问题,这可能是个好主意。The configuration is just as if there were no replication slots. The only change is that the primary_slot_name variable has been added. The slave will pass the name of the ...
select count(1) from pg_replication_slots; 修改配置文件postgresql.conf,将配置文件中的wal_level设置为logical,并确保max_wal_senders和max_replication_slots的参数值,均大于数据库复制槽已使用数与需要以该自建PostgreSQL为源创建的DTS实例数的总和。 # - Settings - wal_level = logical # minimal, replica,...