1.1 pg_stat_replication 可以进行流复制监控(pg_stat_replication视图显示WAL发送进程的详细信息) postgres=#SELECT *FROM pg_stat_replication ;-[RECORD 1 ]--—---+-—---pid| 7683usesysid| 16384usename|repuser application_name|node2 client_addr| 192.168.28.75client_hostname|client_port| 57870backe...
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: .. 浏览0提问于2018-11-17得票数 0 回答已采纳...
pre_wal_delete_retry_script: None pre_wal_delete_script: None primary_ssh_command: None recovery_options: RecoveryOptions() replication_slot: Record(slot_name='pgsql_streaming', active=False, restart_lsn=None) replication_slot_support: True retention_policy: RECOVERY WINDOW OF 4 WEEKS retention_...
mydb=# create user A with password '126.comM';CREATE ROLE mydb=# create user B with password '126.comM';# 授权用户Amydb=# grant select,update,delete on all tables in schema public to role1;GRANT mydb=# grant role1 to A with admin option;GRANT ROLE# 使用用户A登陆并把A用户得到的...
PostgreSQL uses a WAL (Write Ahead Log) to track changes, such inserts, updates and deletes to tables, across all databases in a given PostgreSQL server. Clients use these replication slots to capture and read change events. In order for PostgreSQL to know that a given change event has been...
按照上例Debezium会在PostgreSQL创建一个名为herodotus_slot的复制槽,本例中创建的connector需要通过该复制槽获取数据变更的信息。 可以通过以下sql查看复制槽的信息: select * from pg_replication_slots;上图中,active_pid为14200,即进程ID为14200的wal_sender进程已经在使用该复制槽与Debezium交互了 database.server....
$ psql -h localhost -p 6001 postgres -c "CREATE PUBLICATION pub FOR TABLE users;" CREATE PUBLICATION $ psql -h localhost -p 6002 postgres -c "CREATE SUBSCRIPTION sub CONNECTION 'port=6001 dbname=postgres' PUBLICATION pub;" NOTICE: created replication slot "sub" on publisher CREATE SUBSCRIPTION...
WAL up to a certain point should be preserved or flushed. A replication slot can have one or more tables added to it. If a table/partition has large number of insert, update, deletes happening, it is best to create a dedicated replication slot to avoid lag between the source and target...
_physical_replication_slot('pgsql_db2'); -[ RECORD 1 ]--- slot_name | pgsql_db2 lsn | cndba=# select * from pg_create_physical_replication_slot('pgsql_db3'); -[ RECORD 1 ]--- slot_name | pgsql_db3 lsn | 查看复制槽: postgres=# select * from pg_replication_slots; 1. 2....
az postgres server configuration set --resource-group group --server-name server --name azure.replication_support --value logicalaz postgres server restart --resource-group group --name serverStep 4: Create a replication slot on your Postgres database...