mysql start replication

master, it will sleep and wait for the master to generate a new event. The I/O thread writes these events to the relay log.Step 3: The last step for SQL slave thread to process the process. The SQL thread reads the event from the relay log and executes the event again to update the slave data so that it is consistent with the data in the master. This thread is consistent with the I/O thread,Relay logs are usually stored in the OS cache, so the overhead of relay logs is very small. Note: The dat

file name and the value of Position, which is recorded for both values. Specify the MySQL master server and set replication information on the MySQL Slave server via the Ansible mysql_replication module. Ansible mysql-slave-m mysql_replication –a "Login_user=root login_password=123456 mode=changemaster master_

thread (SQL slave thread) handles the last step of the 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

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MySQL Semi-synchronous Replication (Semi-synchronous Replication) in enterprise applications, MySQL often uses a master-slave architecture or a master-master architecture to achieve load balancing of MySQL servers, improves the performance of the

MySQL replication table structure, mysql replication StructureIntroduction Sometimes we need to copy the table structure of a table intact to generate a new table. MYSQL provides two convenient methods. Example: CREATE TABLE tb_base(id INT NOT NULL PRIMARY KEY,name VARCHAR(

The replication latency caused by the mutual blocking of MySQL 5.7 concurrent replication and mysqldump. The MySQL BINLOG and show processlist commands were originally two transactions that could not be reached by the client. However, in the recent troubleshooting, it was found that there was a serious

-uroot-p123 7. MY.CNF Configuration from servercat/etc/my.cnf[Mysqld]server-id=2 and the primary server do not have to be duplicatedmaster-host=192.168.1.131 Primary server IPmaster-user=slave account at loginmaster-password=123 MySQL reads the configuration file, it knows it is running from the server 8. When you read binlog from the server from the primary server to generate problemsmysql-u root-pmysql> Change Master tomysql> master_host= ' 192.168.

Role of the master and slave: 1. It can be used as a backup method. 2. read/write splitting to relieve the pressure on a database MySQL master-slave backup principle: Mysql master-slave replication requires at least two Mysql services. Of course, Mysql services can be distri

The role of Master and subordinate: 1. Can be used as a backup method 2. Used to achieve the separation of read and write, ease the pressure of a database MySQL master-slave backup principle: MySQL's master-slave replication is at least two MySQL services, of course, MySQL services can be distributed on different s

: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL1 row in set (0.00 sec) View error logs mysql@192.168.71.1:/opt/mysql/3399$ cat 192.168.71.1.err140115 1:51:01 [ERROR] Error reading packet from server: Client requested master to start