有三个系统变量tcp_keepalives_idle,tcp_keepalives_interval ,tcp_keepalives_count 来设置postgresql如何处理死连接。 在postgresql, 这三个参数都设为0将使用操作系统的默认值,在linux下,tcp_keepalives_idle一般是2个小时,也就是2个小时后,服务器才可以自动关掉死连接。 在实际应运中,可以自行调整以上参数。
tcp_keepalives_idle = 7200 tcp_keepalives_interval = 130 tcp_keepalives_count = 3 shared_buffers = 256MB work_mem = 16MB maintenance_work_mem = 128MB wal_level = logical full_page_writes = on max_wal_size = 1GB min_wal_size = 80MB wal_keep_segments = 32 logging_collector = o...
2.3.3连接超时(可在配置文件里面更改,也可以使用pg_timeout) ALTER SYSTEM SET idle_in_transaction_session_timeout=900000; --空闲事务超时,单位为毫秒,此处为15分钟空闲就断开连接 ALTER SYSTEM SET tcp_keepalives_idle = 900; --TCP连接闲置超时,单位为秒,客户端异常断开连接 三、安全审计 3.1是否开启相关...
pg_settings_tcp_keepalives_count:设置tcpkeepalives计数[lw] pg_settings_tcp_keepalives_idle_seconds:设置tcpkeepalives空闲秒数[lw] pg_settings_tcp_keepalives_interval_seconds:设置tcpkeepalives间隔秒[lw] pg_settings_temp_buffers_bytes:设置临时缓冲区字节[lw] pg_settings_temp_file_limit_bytes:设...
我们已经尝试过定义tcp_keepalives_idle=300、tcp_keepalives_interval=30和tcp_keepalives_count=3,但空闲会话的数量仍然是数百个。当我们关闭空闲会话或重新启动数据库时,空闲会话重新连接,并保持空闲。 浏览0提问于2020-09-30得票数 0 2回答 锁定SELECT,以便另一个进程不会获得旧数据 、、、 在我看来,...
1.装好Postgres 2.开启远程访问 配置postgresql.conf文件 listen_addresses = '*' 配置pg_hba.conf...
tcp_keepalive tcp_keepcnt tcp_keepidle tcp_keepintvl tcp_user_timeout tcp_socket_buffer track_extra_parameters verbose Customizations of the PgBouncer configuration are written declaratively in the .spec.pgbouncer.parameters map. The operator reacts to the changes in the pooler specification, and ev...
Controls whether TCP keepalives are used (default is 1, meaning on). If you don't want keepalives, you can change this to 0, meaning off. This parameter is ignored for connections made by a Unix-domain socket. bdr.global_keepalives_idle ...
tcp_keepalives_idle = 60 #指定不活动多少秒之后通过 TCP 向客户端发送一个 keepalive 消息。 0 值表示使用默认值。 在 Windows 上, 值若为 0,系统会将该参数设置为 2 小时,因为 Windows 不支持读取系统默认值。 tcp_keepalives_interval = 10 #指定在多少秒之后重发一个还没有被客户端告知已收到的 ...
tcp_keepalives_idle tcp_keepalives_interval tcp_keepslaves_count 一旦配置这几个选项,即使client和server之间断了联系,那么过了预定时间这个connection所占的资源也会收回了,同时client也会收到相应的错误信息,而不是永远地hang在那不动! 五、High Availablity trade off ...