在PG 12以前的版本,备库提升为主库需在备库主机上执行命令或者通过生成触发文件进行触发,在PG 12中,可通过客户端连接到数据库后执行pg_promote函数实现. 下面以一个简单的例子进行说明. 搭建流复制环境 参照PostgreSQL DBA(31) - Backup&Recovery#4(搭建流复制) ,注意在PG 12,recovery.conf文件已废弃,相关的配...
pg_promote --- t (1 row) wait: 表示是否等待备库的 promotion 完成或者 wait_seconds 秒之后返回成功,默认值为 true。 wait_seconds: 等待时间,单位秒,默认 60 #也可通过su - postgres -c "pg_ctl promote"命令完成 日志信息: 2021-09-10 11:29:30.698 CST,,,25036,,613acf22.61cc,6,,2021-09-...
Add function pg_promote() to promote standbys to primaries (Laurenz Albe, Michaël Paquier) Previously, this operation was only possible by using pg_ctl or creating a trigger file. 1. 2. 3. 4. 2. 函数说明 pg_promote(wait boolean DEFAULT true, wait_seconds integer DEFAULT 60) Descriptio...
postgres=# SELECT pg_promote(true,60); pg_promote --- t (1 row) wait: 表示是否等待备库的 promotion 完成或者 wait_seconds 秒之后返回成功,默认值为 true。 wait_seconds: 等待时间,单位秒,默认 60 #也可通过su - postgres -c "pg_ctl promote"命令完成 日志信息: 2021-09-10 11:29:30.698 CS...
方法/步骤 1 1.配置备库recovery.conf配置recovery.confrecovery_target_timeline='latest'standby_mode=onprimary_conninfo='host=192.168.16.26 port=5432 user=repuser' 这个IP要修改为主库的IP#trigger_file='/home/postgres/pgdata/.postgresql.trigger.1921' 并且把这一行...
备库执行 pg_ctl promote 就报：pg_ctl ：PID file "/postmaster.pid" does not exist ...
One concern is that there can be a "time" after the pg_control's state is changed to DB_IN_PRODUCTION and before the server is able to start accepting normal (not read-only) connections. So if users try to start write transaction just after pg_ctl promote -w ends, they might ...
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Picornavirus IRESes and the poly(A) tall jointly promote cap-independent translation in a mammalian cell-free system (vol 6, pg 1781, 2000)doi:10.1017/S135583820202099XBergamini, GRNA-A PUBLICATION OF THE RNA SOCIETYBergamini, G., Preiss, T. & Hentze, M. W. (2000). Picornavirus IRESes...
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