mysql start replication

threads: where the Binlog dump thread runs on the main library, and the IO thread and SQL thread run from the library. When starting replication from the library (start slave), first create the IO thread connection main Library, the main library then create the Binlog dump thread to read the event sent to the IO thread, the IO thread gets to the event after the update to the log from the library trunk logs

configuration cannot be lower than the master node; If you are sensitive to latency issues, consider using the MARIADB branch version, or go directly to the latest MySQL 5.7 version. The use of multi-threaded replication can greatly reduce replication latency, and another alternative for which is particularly sensitive to

replication in the slave database based on the bin log file name and position obtained in the previous step. -- Execute in the slave database (change the value mysql-bin.0000099 and 0 in the Command master_log_file = 'mysql-bin.0000099 ', master_log_pos = 5 to the value obtained in the previous step) Change master to master_host = '192. 111.111.110 ', Master_use

rows in Set (0.00 sec)Slave configurationmysql> INSTALL PLUGIN rpl_semi_sync_slave SONAME ' semisync_slave.so ';Query OK, 0 rows Affected (0.00 sec)Vim/etc/my.cnf[Mysqld]Rpl_semi_sync_slave_enabled=onService mysqld RestartMysql> show global variables like '%semi% ';+---------------------------------+-------+| variable_name | Value |+---------------------------------+-------+| rpl_semi_sync_slave_enabled | On || Rpl_semi_sync_slave_trace_level | 32 |+---------------------------------+-------+2

is written to the binary log, master notifies the storage engine to commit the transaction.The next step is to slave copy the Binary log of Master to its own trunk logs. First, slave starts a worker thread ――i/o thread. The I/O thread opens a normal connection on master and then starts Binlog dump process. Binlog dump process reads the event from the binary log of master, and if it has been followed by master, it sleeps and waits for master to produce a new event. The I/O thread writes these ev

process. The SQL thread reads events from the log and replays the events in them to update the slave data so that it is consistent with the data in master. As long as the thread is consistent with the I/O thread, the trunk log is typically located in the OS cache, so the overhead of the trunk log is minimal.In addition, there is a worker thread in master: As with other MySQL connections, slave opening a connection in master will also cause master to

[$#-ne 1]; Thenecho "Usage: $ Exit-1FiNo=$1Sub=mysql$noBase=/usr/local/mysqlspidfile= $base/run/$sub. pidif [!-F "$pidfile"]; Thenecho "' $pidfile ' not exist, MySQL server could not start"Exit-2FiPid= ' Cat $pidfile 'Kill $pidExecution: stop_mysql.sh 1 to stop the MYSQL1, after the parameter changed to 2 can stop MYSQL2, as follows:2. Configure the primary data

pipes.# Note that using this option without enabling named pipes on Windows# (Via the "enable-named-pipe" option) will render mysqld useless!## Skip-networking# Replication Master Server (default)# Binary logging is required for replicationLog-bin = mysql-binLog-slave-updates# Required unique id between 1 and 2 ^ 32-1# Defaults to 1 if master-host is not set# But will not function as a master if omittedSer

How to install MySQL database, do not say here, just say its master-slave copy, the steps are as follows:1, the master-slave server for the following actions：1.1. Consistent version1.2. Initialize the table and start MySQL in the background1.3, change the root password2. Modify master server Master:#vi/etc/my.cnf[Mysqld]Log-bin=

Tags: copy mysql auto start install DDR share image execute code SRCTo turn on replication configuration:Server-id=1 #标识服务器唯一Log-bin=mysql-bin #二进制日志开启Enforce_gtid_consistency = on #GTID模式是组复制的基础技术binlog-format=row #必须是ROW模式Gtid-mode= on#GTID保证事物编号全局唯一 (Global Transaction ID)master-info-repository=TABLE Rela

) [Mysqld] server-id = 2 # unique IDread_only = 1 # Set Slave database read-only datadir =/var/lib/mysqlsocket =/var/lib/mysql. sockuser = mysql # Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links = 0 [mysqld_safe] log-error =/var/log/mysqld. logpid-file =/var/run/mysqld. pid 10. Restart the Slave Database [root@VM-CentOS /]# service mysqld restart 11. Set the Server L

master slaveMysql software can be downloaded in the http://www.mysql.com [/, source code or rpm package can be, because RHEL6 comesMysql software package, directly install yum.# Yum install mysql-server-yMaster server Configuration1) configure the/etc/my. cnf configuration fileAdd parameters under [mysqld]Log-bin = mysql-bin # Start the binary log systemBinlog-d

replication is that one slave server can be used for backup without interfering with the master server. During the backup process, the master server can continue to process updates. MySQL uses three threads to execute the replication function (one of them is on the master server and the other two are on the slave server. When

Go to the mysql homepage and cover all the articles about how good mysql 5.6 is. Later, I browsed the 5.6 update description, saying that replication was enhanced, and some people tested to enable replication, which had little impact on performance. Unlike before, the impact on performance was obvious. But better perfo

. UNLOCK the unlock tables of the master server database. If you stop apache or nginx, enable them at www.2cto.com 6. copy the backup files on the master node to the slave server. You do not need to use WinScp to download the files to the local computer and then upload them to the slave server. You can directly use the scp command to copy the backup files between servers, which is faster. Scp-r root@XXX.XXX.XXX.XXX:/root/bak. SQL./7. before deleting old data on the slave server, make sure that a