mysql replication status

archive.When flush TABLES with read lock is in effect (that is, the MySQL client program does not exit), read the current binary log name and offset value on the primary server:MySQL > SHOW MASTER STATUS;+---------------+----------+--------------+------------------+| File | Position | binlog_do_db | binlog_ignore_db |+---------------+----------+--------------+------------------+|

MySQL replication is quite complex compared to the replication of NoSQL databases such as MongoDB,redis ! Overview The primary server first logs data changes to the primary log, then reads the master log on the primary server through the I/O thread from the server, writes it to the relay log from the server, and then the SQL thread reads the relay log and repla

executing the following command on slave:Change MASTER to Master_delay = N; The Master_delay option is added directly #读者可在配置延迟从库Change master.This statement sets the slave database to delay n seconds and then replicates the data with the primary database by logging on to the Slave database server (this is 52) and then executing the following command.mysql> stop Slave;Query OK, 0 rows affected (0.45 sec)mysql> change MASTER to Master_delay = 20; #这是延

database and slave database respectively.Copy codeThe Code is as follows:[Root @ master ~] # Service mysql restart[Root @ slave ~] # Service mysql restart Step 6: create an account for master-slave replication on the master database Copy codeThe Code is as follows:[Root @ master ~] # Mysql-uroot-pMysql> grant

configuration content # Replication Master Server ( Default) for replication log-bin=master-bin // Modify server-ID 1 // primary server, the smaller the number the higher the level Log-slave-updates=true // Modify[[Email protected] ~]# service mysqld Restart //restart Services The primary server logs on to MySQL to synchronize permis

account with copy rights4. Start the I/O thread and SQL threadEdit the configuration file, start the trunk log function and define Server-id[Email protected] ~]# vim/etc/mysql/my.cnf #log-bin=mysql-binrelay-log=/mysql/relaylogs/relay-logserver-id = 11View status information for the master nodeMariaDB [(None)]> SHOW MA

that the host name of the synchronization Master is A (IP: 192.168.0.1), the Slave host name is B (IP: 192.168.0.2), and the two basedir directories of MySQL are/usr/local/mysql, datadir is both:/var/lib/mysql. II. set synchronization server 1. set synchronization Master Modify the my. cnf file in # Replication Master

= 203Replicate-do-db = abc # synchronize only the abc LibrarySlave-skip-errors = all # ignore all errors caused by Replication 3. Restart the master-slave mysql server. /Etc/init. d/mysqld restart 4. Create an account on the master server and authorize slave Mysql> mysql-u root-p123.comMysql> grant

I. Tutorial purpose: Mysql also supports semi-synchronous replication in master-slave replication. mysql replication is asynchronous because of poor synchronization performance. After the master database distributes events, you must wait until the slave database completes co

/bin: $ PATH[Root @ node1 mysql] #./etc/profile. d/mysql. sh // re-read the file[Root @ node1 mysql] # chkconfig -- add mysqld // add to service list[Root @ node1 mysql] # service mysqld start // start mysql 2.5 Node 2 also performs the above operation 2.6 configure the mast

performance bottleneck of the entire system.Of course, there are other replication models, such as multi-level relay and loop replication. The basic principles of these replication models are similar to those mentioned above. I will not explain them in detail here.3. Configure master-slave Replication(1) asynchronous

MySQL replication advantages and principles Replication transfers the DDL and DML operations of the primary database to the slave database through binary logs, and rewrites the data from the slave database to ensure data synchronization between the slave database and the primary database. MySQL can replicate data from

';Flush privileges;Slave before adding the master information, look at the Bin-log logging location node of the master library and execute it in the Master library:Mysql> Show master status;+-------------------+----------+--------------+------------------+| File | Position | binlog_do_db | binlog_ignore_db |+-------------------+----------+--------------+------------------+| master-bin.000029 | 107 | | |+-------------------+----------+--------------+-

names, set them multiple times. Next, check whether the server load balancer instance can be correctly connected to the Master instance and have corresponding permissions. Root $ mysql-hrep1-urep-prepMysql> show grants;+ Certificate ------- +| Grants for rep @ rep2 |+ Certificate ------- +| Grant select, FILE, replication slave on *. * TO 'rep '@ 'rep2 'identified BY password' * 9FF2C222F44C7BBA5CC7E3BE857

password 2. Modify Master server Master#vi /etc/my.cnf [mysqld] log-bin=mysql-bin //[必须]启用二进制日志 server-id=222 //[必须]服务器唯一ID，默认是1，一般取IP最后一段3. Modify the slave from the server:#vi /etc/my.cnf [mysqld] log-bin=mysql-bin //[不是必须]启用二进制日志 server-id=226 //[必须]服务器唯一ID，默认是1，一般取IP最后一段4. Restart MySQL for two servers/etc/init.d/

read the binary log of the master. Enable the slave Service The specific implementation process is as follows: I. preparations: 1. The Master/Slave database versions are best consistent. 2. Data Consistency in the master and slave Databases Primary Database: 182.92.172.80/linux Slave Database: 123.57.44.85/linux 2. master database modification: 1. Modify mysql Configuration Find the configuration file my. cnf (or my. ini) of the primary database

installation module succeeds)# mysql > Set global rpl_semi_sync_slave_enabled = 1;# stop Slave;# start Slave;Finally, the common configuration parameters are written in the configuration file:192.168.1.141:[Mysqld]Rpl_semi_sync_master_enabled=1rpl_semi_sync_master_timeout=1000192.168.1.142:[Mysqld]Rpl_semi_sync_slave_enabled=14. View status information for semi-synchronous replicationExecute the following

Compared with the replication of NoSQL databases such as MongoDB and Redis, MySQL replication is quite complex! Overview first, the master server records data changes to the master log, then reads the master log on the master server from the server through the I/O thread, and writes it to the slave server mysql managem

Binlog, before it is put back to the client; 5.5 integrated into MySQL, in the form of plugins, need to be installed separately Ensure that Binlog is transferred to at least one slave library after the transaction commits There is no guarantee that the Binlog of this transaction is done from the library application A certain reduction in performance Network exception or outage from library, CARTICU, until timeout

more numbers in hexadecimal notation for this long string. for example, you can change 0 to 1 and 2 to a. You can change it as needed to ensure that it is different from the 41 server. 7. mysql master/slave configuration 1. set server_id and log-bin. 192.168.1.41 master server Vi/etc/my. cnf; Modify server_id = 1; Modify log-bin = mysqlbin-log; Service mysqld restart mysql service 192.168.1.42 slave server