mariadb replication

Label:synchronous, asynchronous, semi-synchronous replication comparison:Synchronous replication: Master commits the transaction until the transaction is committed at all slave, and the client is returned, and the transaction is completed. Disadvantage: There can be a significant delay in completing a transaction.Asynchronous replication: Requests Binlog to Maste

Tags: Nobody add iss ISA MySQL enc boot up lov rpm-eHow to install CentOS 7.4MariaDB 10.3.9 StableDatabase one, CentOS 7.4 Uninstall the MARIADB database 1. Query the installed MARIADB components[[emailprotected]_0_9_centos ~]$ sudo rpm -qa | grep mariadb mariadb-libs-5.5.60-1.el7_5.x86_64

to check.$ mysql-u Root-pMariaDB [(None)]> show databases;MariaDB [(None)]> use test01;MariaDB [test01]> select * from pet;ConclusionAs you can see in this tutorial, the migration of mysql-to-mariadb is not difficult. You should know that MariaDB has a lot of new features compared to MySQL. As for the configuration as

Multi-source replication If this is an entire instance-level replication, there is no scenario described below.If you are filtering replication on one or more of the primary instances, and after running for a while, how do you want to add a library to this source? Main 1:192.168.1.10 3306 DB1 DB2 Main 2:192.168.1.20 3306 db3 from: 192.168.1.30 3306 If the previou

The file is as follows. Modify the file as needed: #/Usr/share/mysql/my-huge.cnf# MariaDB configuration file sample template (huge, giant ).## This file applies to dedicated database servers with a memory of 1 GB to 2 GB.# Only large MariaDB systems are running on the machine,## The MariaDB program searches for a series of configuration files based on the operati

the strategy plus this sentence mysql> set global validate_password_policy=0; 3. Grant permission from the library account to copy the Chaoge from the library, copy it on the 192.168.178.130 machineGrant Replication Slave on * * to ' chaoge ' @ ' 192.168.178.130 ';#检查主库创建的复制账号Select User,host from Mysql.user;#检查授权账号的权限Show grants for [email protected] ' 192.168.178.130 ';Enables read-only access to the primary database lock table, prevents data writ

Tags: mariadb and mysql co-mariadb run concurrently with MySQL[[email protected] ~]#groupadd mariadb - g Wuyi3[email protected] ~]#useradd-u3 - g mariadb -s/sbin/nologin-d/home/mariadb mariadbDownload the binary installation package to the/root directory from

, 3, 5] [1, 2, 3, 5]Here, both variables A and B point to the same object (a list). Therefore, once you modify either of them, the other one will also be affected. in any case, the original object will be modified.Note:To become a python expert, the first thing to note is the change operation and assignment of objects, which are all reference operations on objects. A statement such as a = [] re-binds a to a new object, but does not affect the previous object. however, object

Speaking of mysql clusters, it is estimated that many people will first think of mysql's built-in replication or mysql-mmm. Mysql-mmm is actually based on the built-in replication of mysql, but the encapsulation is better, but it is still difficult to configure, And it is powerless to dynamically increase or decrease the master node. By chance, I learned that there is a mysql-Based Cluster galera. Apart fro

-in to achieve the semi-synchronous function2 Plug-in installationView plug-ins for the current database installationMariaDB [sunny]> Show plugins;MySQL supports a variety of plug-ins, where semisync_master.so and semisync_slave.so under path/usr/lib64/mysql/plugin/achieve semi-synchronous replication and require installation to use the synchronous replication featurePerform the help install under MySQL to