Another exciting setting (requiring PostgreSQL 13 or above) is the max_slot_wal_keep_size parameter in the PostgreSQL configuration: it is set to 500MB, which instructs Postgres to invalidate a replication slot that reaches that size (preventing Postgres from running out of disk and causing an...
[postgres@localhost pg952]$ pg_ctl -D $PGDATA start 主库创建slot [postgres@localhost pg952]$ psql -h 192.168.230.128 -p 5432 -U postgres Password for user postgres: psql (9.5.2) Type "help" for help. postgres=# select pg_is_in_recovery(); -[ RECORD 1 ]---+-- pg_is_in_reco...
[postgres@localhost pg952]$ pg_ctl -D $PGDATA start 主库创建slot [postgres@localhost pg952]$ psql -h 192.168.230.128 -p 5432 -U postgres Password for user postgres: psql (9.5.2) Type "help" for help. postgres=# select pg_is_in_recovery(); -[ RECORD 1 ]---+-- pg_is_in_reco...
Now that we have a running PostgreSQL server, let’s create a replication slot. We can do this using thepg_create_physical_replication_slotfunction. $ psql postgres psql (10.2) Type "help" for help. postgres=# select pg_create_physical_replication_slot('slot1'); pg_create_physical_replicat...
此时replication slot还不处于active状态。 3) 在从库配置recovery.conf如下,然后重启从库: standby_mode = 'on' primary_slot_name = 'my_rep_slot_1' primary_conninfo = 'user=pg001host=10.x.x.x port=5432 sslmode=prefer sslcompression=1 krbsrvname=postgres' ...
我有一个酒保,可以从另一台服务器上安装一个postgres备份。pre_backup_retry_script: None recovery_options: RecoveryOptions([])replication_slot大约几天前,我们在postgres上遇到了一些问题,酒保也没能支持我们。08:48:28 2018 - Size: 2.2 TiB - WAL Size: 38.3 GiB (tablespaces: .. ...
postgres=#ALTERSUBSCRIPTIONsub2CONNECTION'host=192.168.50.10 port=5432 dbname=postgres user=postgres password=vagrant'; ALTERSUBSCRIPTION This continues the replication, and pg_replication_slot information can confirm this. Summary + Key Points The logical replication slot is concept...
PostgreSQL原生支持使用Replication Slot开启数据订阅(CDC,Change Data Capture),本文介绍在RDS PostgreSQL实例上开启数据订阅的配置步骤。 前提条件 已创建RDS PostgreSQL实例。更多信息,请参见快速创建RDS PostgreSQL实例。 已设置白名单,允许客户端访问RDS PostgreSQL实例。更多信息,...
NOTICE: created replication slot “sub1” on publisher CREATE SUBSCRIPTION 订阅者sub1将会从发布者pub1复制表users. 这些都需要基础的复制工作,订阅者会拷贝所有数据到表中,创建订阅者时,表不会被复制,我们需要先自己创建这些表,如果没有发现本地表复制将会失败。
tocatch up exceeds max_slot_wal_keep_size. When this happens, target has to be reseeded (pg_dump) from the scratch and thiscan take longer. I am investigating the options to revive a lost slot. >> > >> >> Why in the first place one has to set max_slot_wal_keep_size if they...