postgresql multi master replication

after you modify it.If you are a VMware virtual machine as Slave:Edit another configuration file for slave,Vi/etc/mysql/mysql.conf.d/mysqld.cnfComment out the line "bind-address = 127.0.0.1"How to debug:A. Multi-view server Logs (if you are using MySQL Workbench, click Management, find the server Logs under the "Instance" column), it will prompt many warning and errors, according to the error search answer.B. MySQL official teaching, step by step, so

1 , prepare two database environments, or a single multi-instance environment for normal startup and logon. 2, Configurationmy.cnffile, main library configurationLog-binand theServer-idparameters, configuring from libraryServer-id, cannot normally be opened from the library, as with the main library and other librariesLog-bin function. Note: After configuring the parameters, reboot takes effect. 3 , log in to the main library to increase the number of

From this beginning we mainly discuss the deployment technology of MongoDB.We know that SQL Server can read and write separation, dual-machine hot backup and cluster deployment, of course, MongoDB can also do, in practical applications we do not want the database to use a single point of deployment,How bad it would be if you hit a database outage or were devastated.One: Master-slave replication1: First look at the model diagram2: From the graph above

Label:Installing PostgreSQL Whether the master-slave must be divided into two machines, master and slave should be the same version, or start will error. 3. Configure the master database Su–postgres /usr/local/pgsql/bin/pg_ctl–d/data/pgsql9.1 Start #启动数据库 #进入数据库创建repl用户 Psql–p 5432–u postgres–h 127.0.0.1 Create user re

Tags: slime learning mysql database master and slavethis article starting at Slime Line the world . Description This article is reproduced in part from the Internet.MySQL replication (English for replication) is a multi-MySQL database master from the synchronous scheme, char

Label:From this beginning we mainly discuss the deployment technology of MongoDB. We know that SQL Server can read and write separation, dual-machine hot backup and cluster deployment, of course, MongoDB can also do, in practical applications we do not want the database to use a single point of deployment, How bad it would be if you hit a database outage or were devastated. One: Master-slave replication 1:

Tags: CTO SQL database otherwise get Ann content retention include logMySQL replication (English for replication) is a multi-MySQL database master from the synchronous scheme, characterized by asynchronous replication, widely used in a variety of MySQL have higher performanc

Objective: the master database is down and upgraded from the master database to the master database.Prepare the environment:1 web Server3 MySQL serversEnvironment description:1. The bbs website service is running on the web, and the database service is provided by the MySQL-01.2. MySQL-02 and-03 are MySQL-01 slave LibraryEmergencies:At this time, the MySQL machin

"title=" M-m-m.png "alt=" Wkiol1yazfvrwcllaabmndek2_0193.jpg "/>Working principle:Monitor three other machines running through monitorDML is sent to one of the machines, the other three loops synchronouslyDisadvantages:1) Pass multi-level latency issues.2) Monitor maintenance adds complexity.1.5. One Slave-muti Master650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/73/8A/wKiom1YAz6jgg5W1AABH9vqi5P0911.jpg "title=" one Slave-muit master.png

,Wal_level is the write ahead log parameter value , set stream replication Be sure to update this value to Hot_standbyWal_keep_segments Default value is , is the log file size under Pg_xlog archive can also choose to shut down, the archive is scheduled for recovery, stream replication is not requiredTo create a user for replication:Cd/data/pqsql/bin/[email protected]:/data/pqsql/bin$./psqlpsql (9.1.3) Type

MARIADB Multiple source replication data rollup, as shown in the following figure, in some scenarios, there are A and b two node databases, from the data to read AB Two nodes data to a Slave database Main A and main B: [Root@master local]# Tar XF mariadb-10.0.10-linux-x86_64.tar.gz[Root@master local]# ln-sv mariadb-10.0.10-linux-x86_64 MySQL' MySQL '-> ' m

, and the burden is heavy. So, Slave-1 is master from, Slave-1 is slave-2,slave-3,... , while Slave-1 is no longer responsible for select. Slave-1 transfers the burden of the master copy thread to its own body. This is called the concept of multi-level replication. Issue 6: When a select is sent to the MySQL proxy, thi

postgres 140 May 6 13:35 recovery.confCat recovery.conf Standby_mode = ' on ' primary_conninfo = ' user=postgres host=10.2.0.14 port=5432 sslmode=disable Sslcompression=1 'Modify POSTGRESQL.CONF (otherwise startup failure error: Postgresql-9.5.service start operation timed out. terminating.)Hot_standdby=onStart from librarySystemctl start Postgresql-9.5.servicesystemctl Enable

Label:At that time on a server to open a multi-instance, master-slave replication structure diagram as follows:At that time on the 192.168.10.3 server with show slave status, the display is normal replication, two threads are yes, and the read and write Pos has been increasing, but any changes on the main library are n

. Now that the system has a new master server and an slave server, the client can continue to use this system to process read and write requests. Because one server is offlineThe performance of the re-launch system may not be comparable to that of the original system, but this recovery operation can avoid the overall system downtime.. Although the method described above can bring the system back online, it is too troublesome to man

OverviewAs the current production environment of the MySQL database distributed in two servers, from a single master and slave view, configuration is very simple, but need to synchronize two server database to one from the library above, need to do more configuration and considerations. There are two scenarios for multi-source replication, binlog+position and Gti