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MySQL Replication--双主结构优缺点【图】

双主架构图双主架构实现原理:当从库IO线程接受到主库传递来的二进制日志(Binlog)并将之保存为从库的中继日志(relay log),然后从库SQL线程将中继日志(relay log)的事件重做到从库上,实现主从数据同步。如果SQL线程发现该事件的server_id与当前从库的server_id相同,则会丢弃该事件,因此如果两台MySQL如何互为主从,不会导致相同的事件被重复执行。双主架构设计目标:在一套MySQL复制群集中,通过双主或多主架构,解决一主多从架构...

MySQL Group Replication的安装部署【代码】【图】

https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz mv mysql-5.7.26-linux-glibc2.12-x86_64 /usr/local/mysql ②、 创建数据库需要的数据、日志和临时目录并赋权:mkdir -p /data/mysql/{mysql_3306,mysql_3307,mysql_3308}/{data,logs,tmp} chown -R mysql.mysql /data/mysql/ 3. 初始化 安装机器: 192.168.0.162 (单机多实例安装)配置文件说明:端口号 配置文件3306 /data/mysql/my...

MySQL Replication--半同步复制(Semi-Sync Replication)【代码】【图】

默认配置下,MYSQL主从库通过binlog来保持一致,主库事务提交后,将binlog日志写入磁盘,然后返回给用户,备库通过拉取主库的binlog来同步主库的操作,无法保证主备节点数据实时一致,只能保证最终一致,因此属于异步复制。 为保证在主备切换时,主备节点数据完全一致,MYSQL提供了半同步复制,其实现原理为:事务在主库上执行完成,生成BINLOG并推送给备库,等待备库的影响消息,备库将接受到的binlog(file,pos)信息返回给主库,主...

MySQL Group Replication mgr 安装关键过程【代码】

1、初始化和启动 mysql/bin/mysqld --initialize-insecure --basedir=/mgr/mysql --datadir=/mgr/data/s1 mysql/bin/mysqld --initialize-insecure --basedir=/mgr/mysql --datadir=/mgr/data/s2 mysql/bin/mysqld --initialize-insecure --basedir=/mgr/mysql --datadir=/mgr/data/s3/mgr/mysql/bin/mysqld --defaults-file=/mgr/data/s1/s1.cnf /mgr/mysql/bin/mysqld --defaults-file=/mgr/data/s2/s2.cnf /mgr/mysql/bin/mysql...

MySQL Group Replication mgr 单主 proxysql 读写分离配置过程【代码】

1、前期准备,mgr安装见上一篇文章 2、创建用户和导入脚本 GRANT ALL ON *.* TO ‘rootuser‘@‘%‘ IDENTIFIED BY ‘123456‘;/mgr/mysql/bin/mysql -h127.0.0.1 -P24802 <a.sql [root@mgr1 ~]# cat a.sql USE sys;DELIMITER $$CREATE FUNCTION IFZERO(a INT, b INT) RETURNS INT DETERMINISTIC RETURN IF(a = 0, b, a)$$CREATE FUNCTION LOCATE2(needle TEXT(10000), haystack TEXT(10000), offset INT) RETURNS INT DETERMINIST...

how-to-configure-mysql-masterslave-replication-with-mha-automatic-failover/

https://www.arborisoft.com/how-to-configure-mysql-masterslave-replication-with-mha-automatic-failover/how-to-configure-mysql-masterslave-replication-with-mha-automatic-failover/标签:conf configure http cat tom tomat iso mysq sql 本文系统来源:https://www.cnblogs.com/WCFGROUP/p/11258518.html

Percona XtraDB Cluster vs Galera Cluster vs MySQL Group Replication【图】

OverviewGalera ClusterPercona XtraDB ClusterMySQL Group ReplicationMySQL InnoDB ClusterSimilaritiesSimilar - Use CasesSimilar LimitationDifferences GR & GaleraGroup Communication System 组通信系统Binlogs & GcacheNode Provisioning 节点配置GTID vs. SeqnoPartition HandlingFull Solution or PluginFlow Control 流控制WAN SupportOS SupportSchema Changes - DDLDifferences PXC & GaleraPXC Strict ModeProxySQL...

如何利用HAProxy 代理 MySQL Master-Slave Replication【代码】【图】

背景 我有一个MySQL Master-Slave Replication, 想要通过HAProxy代理, 做读写分离. 写流量给到Master 节点, 读流量给到Slave 节点.首先我应该由一个HAProxy的配置, 我想应该这样写(伪配置): listen mysqlbind *:3316mode tcp...server 192.168.1.111 192.168.1.111:3306 checkserver 192.168.1.112 192.168.1.112:3306 checkserver 192.168.1.113 192.168.1.113:3306 check 很明显, 这么写仅仅只实现了流量的分发, 但并不能实现我...

Replication Lag 的mysql 如何分析【代码】

Replication lag occurs when the slaves (or secondaries) cannot keep up with the updates occuring on the master (or primary). Unapplied changes accumulate in the slaves‘ relay logs and the version of the database on the slaves becomes increasingly different from that of the master. To work out what‘s causing the lag, you must determine which replication thread is getting backed up. Replicatio...

配置MySQL主从复制报错Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work【代码】【图】

配置MySQL主从复制报错 Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work (or the --replicate-same-server-id option must be used on slave but this does not always make sense; please check the manual before using it).? 修改配置文件 sudo vim /usr/my.cnf ? 当时配置从机的时候没改id,应该主机id是...

基于MMM搭建MySQL Replication集群高可用架构【代码】【图】

MMM介绍 MMM是Multi-Master Replication Manager for MySQL的缩写,它是MySQL提供的一个多主复制管理器,其核心是使用perl语言编写的一组脚本。实际上MMM是比较早期甚至有点老的一种用于构建高可用MySQL架构的方式,但因其还有一定的应用场景,所以本文将会演示一下如何搭建一个MMM架构。 MMM 由两个组件组成:monitor:监控集群内数据库的状态,在出现异常时发布切换命令,一般和数据库分开部署 agent:运行在每个 MySQL 服务器上...

基于MHA搭建MySQL Replication集群高可用架构【代码】【图】

MHA架构介绍 MHA是Master High Availability的缩写,它是目前MySQL高可用方面的一个相对成熟的解决方案,其核心是使用perl语言编写的一组脚本,是一套优秀的作为MySQL高可用性环境下故障切换和主从提升的高可用软件。在MySQL故障切换过程中,MHA能做到在0~30秒之内自动完成数据库的故障切换操作,并且能在最大程度上保证数据的一致性,以达到真正意义上的高可用。 基于MHA的架构不像MMM那样需要搭建主主复制,只需要搭建基本的主从...

Mysql:Replication

16.1.1 Binary Log File Position Based Replication Configuration Overview 16.1.2 Setting Up Binary Log File Position Based Replication 16.1.3 Replication with Global Transaction Identifiers 16.1.4 MySQL Multi-Source Replication 16.1.5 Changing Replication Modes on Online Servers 16.1.6 Replication and Binary Logging Options and Variables 16.1.7 Common Replication Administration Tasks16.2 Replicatio...

Mysql:FAQ:A.14 Replication

A.14.14.Does replication work on mixed hardware architectures (for example, the master runs on a 64-bit machine while slaves run on 32-bit machines)? Yes. Mysql:FAQ:A.14 Replication标签:tin some position end each masters move show status 本文系统来源:https://www.cnblogs.com/jinzhenshui/p/12566232.html

Mysql:Row-based Replication:运维:一直更新中...

between the MySQL server and clients 16.4.1 Replication Features and Issues16.4.1.1 Replication and AUTO_INCREMENT 16.4.1.2 Replication and BLACKHOLE Tables 16.4.1.3 Replication and Character Sets 16.4.1.4 Replication and CHECKSUM TABLE 16.4.1.5 Replication of CREATE ... IF NOT EXISTS Statements 16.4.1.6 Replication of CREATE TABLE ... SELECT Statements 16.4.1.7 Replication of CREATE SERVER, ...