postgresql multi master replication

file name and location of the binary log read to the primary server to a file named Master-info so that it can be quickly located from the next read Start reading log information backwards4, from the server's SQL thread detected in the trunk log File New additions, the contents of the trunk log file will be resolved immediately, the contents of the log to resolve the SQL statement, and then execute the SQL, because the server side and the main server

update xxx, when#语句执行, the disk has changed.#二进制日志的格式 mixed/row/statement#statement: Binary record execution statements, such as update ...#row: Recording disk changes#mixed: Mixed, determined by the system according to the statement.#哪个好?#update age=age+1 where id=3; Long statement and less disk change, it is advisable to use row#update salary=salary+100; Short statement, but affect tens of thousands of lines, disk changes, it is advisable to use statement2. From the server, modify the/ETC/MY.C

[email protected] '% ' identified by ' amoeba123 '; All that is written here is to have permissions on all libraries (all libraries will be loaded automatically) .the library name of the above configuration file, test. Based on this statement. If it is all, test it directly with the write test. A little easier.(2) One primary one from the load notation one:the Lord writes only. (the primary balanced load configuration)from read-only. (from the Balanced load configuration) (3) a

In the production environment, master-slave replication often has replication latency, mainly because the master node writes data concurrently, and the slave is a single-threaded application relay log, which leads to replication latency, in MySQL 5.6,

MySQL primary master replication +lvs+keepalived for MySQL high availabilityMySQL replication can ensure the redundancy of the data and read and write separation to share the system pressure, if the primary master replication can also be good to avoid the primary node single

\gSlave_io_running:yesSlave_sql_running:yesseconds_behind_master:0tip: Show slave status\g comes out with results that contain the above three items for success! 8. Verify that master-slave replication is successful* * Main: DB01mysql> CREATE DATABASE Lmin;Query OK, 1 row Affected (0.00 sec)* * FROM: DB02mysql> show databases;+--------------------+| Database |+--------------------+| Information_schema || Lm

Mysql5.5replication multi-database Master-Slave backup Master-Slave configuration summary bitsCN.com Mysql 5.5 replication multi-database Master-Slave backup Master-Slave configuration

Redis, like MySQL, has a very powerful master-slave replication feature, and it also supports a master that can have multiple slave, while a slave can have multiple slave to form a powerful multi-level server cluster architecture.　　　　　　　　　Redis's master-slave

Tags: database mysql style userMySQL repication1MySQL repicationprinciple The write operation of the front-end user, or the database modification operation, is logged to the binary log file, save as an event, Master sends Binlog to slave MySQL server via port 3306, slave MySQL server will binlog save to relay log, Read the relay log and execute it again to write the data to disk1.1 Master-slave 650) this.wi

other problems are basically the same as one from the main problem, with the basic experience of one master, the deployment of About the semi-synchronous replication schema:In a master multi-slave MySQL architecture, you can keep master synchronized with one server in many

Tags: mil ready nts Modify show star Command Usage summaryEnvironment : Centos 6.9,mysql 8.0 Configuration preparation: 1, configure the network for CentOS, connect using Remote Tools. 2, installation of MySQL, the path is not limited. (I use RPM package installation, after installation to start the MSYQL Service, command service mysqld start) 3. The default password after MySQL installation is in/etc/my.cnf log-error the log address that the configuration item points to/var/log/mysqld.l

Label:The global transaction identifier (Transactions Identifier) is a new feature of MySQL 5.6 replication. Gtid is actually made up of Uuid+tid. Where the UUID is the unique identity of a MySQL instance. The TID represents the number of transactions that have been committed on the instance and is monotonically incremented as the transaction commits. Here is a concrete form of a gtid. 1, before the MySQL5.6 for m