mariadb master master replication

Master-slave replication:From the server:I/O Thread: Requests binary log information from master and saves it to the relay log;SQL thread: Reads the log information from the relay log and completes the replay locally; Async mode: Async 1, from the server behind the main server, 2, the master-slave data inconsistency; binary log format: SET datetime = Now () 1,

= 16MThread_concurrency = 4Innodb_file_per_table = OnSkip_name_resolve = On##################################### The following content is optional ########[Mysqldump]QuickMax_allowed_packet = 16M[MySQL]No-auto-rehash[Myisamchk]Key_buffer_size = 128MSort_buffer_size = 128MRead_buffer = 2MWrite_buffer = 2M[Mysqlhotcopy]Interactive-timeout#############################[Mysqld_safe]Log-error=/var/log/mariadb/mariadb.logPid-file=/var/run/

only one SQL thread in the slave database to execute write operations. In the long run, the gap between the slave database and the master database will grow bigger and bigger. In this case, multiple SQL threads can be started from the slave database to execute write operations. Each thread is responsible for executing all related transactions of a database in the master database. In addition, after a trans

tables and tables of data, of course, the premise is that there is no such tables and libraries from the server;Master side:MariaDB [(None)]> CREATE DATABASE mydb; MariaDB [(None)]> use MyDB; MariaDB [mydb]> CREATE TABLE T1 (ID INT not NULL); MariaDB [mydb]> INSERT into T1 VALUES (1), (2), (3), (4);

MARIADB Master-slave replication MySQL extension mode: master-slave Read-write separation based on MHA implementation Primary server Configuration* Modify configuration file [Email protected] ~]# VIM/ETC/MY.CNF.D/SERVER.CNF [Mysqld]server-id=1log-bin=

innodb_file_per_table=on skip_name_resolve=on Restart Mariadb:systemctl restar T mariadb create a replication user and authorize: mariadb [(None)]> grant replication slave,replication slave on * * to ' repluser ' @ ' 172.16.%.% ' identified by ' 123456 '

)]> change MASTER to master_host= ' 192.168.0.151 ', master_user= ' WLW ', master_password= ' WLW ', master_ Log_file= ' mysql-bin.000003 ', master_log_pos=413; MariaDB [(None)]> START SLAVE; ④ Check the status of the server and whether the replication thread was started after configurationmariadb[(none)]>showslavestatus\g ***************************1.row

Environment description Main Library server: 192.168.71.151,centos 7,mariadb 10 installed, no application data.1:192.168.71.152,centos 7,mariadb 10 from the library server is installed and no data is applied.2:192.168.71.153,centos 7,mariadb 10 from the library server is installed and no data is applied.The mariadb of

MySQL replication is divided into master-slave replication and master-master replication. What is master-slave Replication refers to a

Connection from library: Mysql-s/data/mysql_data/mysql2/mysql3307.sock Now we are ready to initialize replication from the library instance. Execute the following command from the library instance: slave> slave STOP; Next, you will enter a change MASTER command: slave> change MASTER to master_host= ' 127.0.0.1 ', Master_user= ' Repl ', -Master_password= ' Repl '

ObjectiveBackup database is the first task in production environment, sometimes have to replicate the database through the network, because the master-slave copy of MYSQL/MARIADB is transmitted in plaintext, if it is transmitted across the network in production environment, the security of data cannot be guaranteed completely, in order to solve this problem, We need a secure way to transmit data, which is b

High Availability of MariaDB dual-master N slave replication-Implementation of MMM Architecture 1. MMM OverviewMMM (Master-Master replication manager for Mysql) is a flexible script program for monitoring and failover, manage the