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MySQLmaster-master如何配置

发布时间:2021-09-16 15:51:05 来源:亿速云 阅读:119 作者:chen 栏目:数据库

本篇内容介绍了“MySQLmaster-master如何配置”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!

  MySQLmaster-master怎么配置

  1、修改MySQL配置文件
  两台MySQL均如要开启binlog日志功能,开启方法:在MySQL配置文件[MySQLd]段中加上log-bin=MySQL-bin选项
  两台MySQL的server-ID不能一样,默认情况下两台MySQL的serverID都是1,需将其中一台修改为2即可
  2、将192.168.1.201设为192.168.1.202的主服务器
  在192.168.1.201上新建授权用户
  MySQL>grantreplicationslaveon*.*to'replication'@'%'identifiedby'replication';QueryOK,0rowsaffected(0.00sec)MySQL>showmasterstatus;+------------------+----------+--------------+------------------+|File|Position|Binlog_Do_DB|Binlog_Ignore_DB|+------------------+----------+--------------+------------------+|MySQL-bin.000003|374|||+------------------+----------+--------------+------------------+1rowinset(0.00sec)
  在192.168.1.202上将192.168.1.201设为自己的主服务器
  MySQL>changemastertomaster_host='192.168.1.201',master_user='replication',master_password='replication',master_log_file='MySQL-bin.000003',master_log_pos=374;QueryOK,0rowsaffected(0.05sec)MySQL>startslave;QueryOK,0rowsaffected(0.00sec)MySQL>showslavestatus\G***************************1.row***************************Slave_IO_State:WaitingformastertosendeventMaster_Host:192.168.1.201Master_User:replicationMaster_Port:3306Connect_Retry:60Master_Log_File:MySQL-bin.000003Read_Master_Log_Pos:374Relay_Log_File:MySQL-master2-relay-bin.000002Relay_Log_Pos:235Relay_Master_Log_File:MySQL-bin.000003Slave_IO_Running:YesSlave_SQL_Running:YesReplicate_Do_DB:Replicate_Ignore_DB:Replicate_Do_Table:Replicate_Ignore_Table:Replicate_Wild_Do_Table:Replicate_Wild_Ignore_Table:Last_Errno:0Last_Error:Skip_Counter:0Exec_Master_Log_Pos:374Relay_Log_Space:235Until_Condition:NoneUntil_Log_File:Until_Log_Pos:0Master_SSL_Allowed:NoMaster_SSL_CA_File:Master_SSL_CA_Path:Master_SSL_Cert:Master_SSL_Cipher:Master_SSL_Key:Seconds_Behind_Master:01rowinset(0.00sec)
  3、将192.168.1.202设为192.168.1.201的主服务器
  在192.168.1.202上新建授权用户
  MySQL>grantreplicationslaveon*.*to'replication'@'%'identifiedby'replication';QueryOK,0rowsaffected(0.00sec)MySQL>showmasterstatus;+------------------+----------+--------------+------------------+|File|Position|Binlog_Do_DB|Binlog_Ignore_DB|+------------------+----------+--------------+------------------+|MySQL-bin.000003|374|||+------------------+----------+--------------+------------------+1rowinset(0.00sec)
  在192.168.1.201上,将192.168.1.202设为自己的主服务器
  MySQL>changemastertomaster_host='192.168.1.202',master_user='replication',master_password='replication',master_log_file='MySQL-bin.000003',master_log_pos=374;QueryOK,0rowsaffected(0.05sec)MySQL>startslave;QueryOK,0rowsaffected(0.00sec)MySQL>showslavestatus\G***************************1.row***************************Slave_IO_State:WaitingformastertosendeventMaster_Host:192.168.1.202Master_User:replicationMaster_Port:3306Connect_Retry:60Master_Log_File:MySQL-bin.000003Read_Master_Log_Pos:374Relay_Log_File:MySQL-master1-relay-bin.000002Relay_Log_Pos:235Relay_Master_Log_File:MySQL-bin.000003Slave_IO_Running:YesSlave_SQL_Running:YesReplicate_Do_DB:Replicate_Ignore_DB:Replicate_Do_Table:Replicate_Ignore_Table:Replicate_Wild_Do_Table:Replicate_Wild_Ignore_Table:Last_Errno:0Last_Error:Skip_Counter:0Exec_Master_Log_Pos:374Relay_Log_Space:235Until_Condition:NoneUntil_Log_File:Until_Log_Pos:0Master_SSL_Allowed:NoMaster_SSL_CA_File:Master_SSL_CA_Path:Master_SSL_Cert:Master_SSL_Cipher:Master_SSL_Key:Seconds_Behind_Master:01rowinset(0.00sec)
  4、MySQL同步测试
  如上述均正确配置,现在任何一台MySQL上更新数据都会同步到另一台MySQL,MySQL同步在此不再演示。
  keepalived怎么安装及配置
  1、192.168.1.201服务器上keepalived安装及配置
  安装keepalived
  #tarzxvfkeepalived-1.1.20.tar.gz#cdkeepalived-1.1.20#./configure--prefix=/usr/local/keepalived--with-kernel-dir=/usr/src/kernels/2.6.18-164.el5-i686#make&&makeinstall
  配置keepalived
  我们自己在新建一个配置文件,默认情况下keepalived启动时会去/etc/keepalived目录下找配置文件
  #mkdir/etc/keepalived#vi/etc/keepalived/keepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{luwenju@live.cn}notification_email_fromluwenju@live.cnsmtp_server127.0.0.1smtp_connect_timeout30router_idMySQL-ha}vrrp_instanceVI_1{stateBACKUP#两台配置此处均是BACKUPinterfaceeth0virtual_router_id51priority100#优先级,另一台改为90advert_int1nopreempt#不抢占,只在优先级高的机器上设置即可,优先级低的机器不设置authentication{auth_typePASSauth_pass1111}virtual_ipaddress{192.168.1.200}}virtual_server192.168.1.2003306{delay_loop2#每个2秒检查一次real_server状态lb_algowrr#LVS算法lb_kindDR#LVS模式persistence_timeout60#会话保持时间protocolTCPreal_server192.168.1.2013306{weight3notify_down/usr/local/MySQL/bin/MySQL.sh#检测到服务down后执行的脚本TCP_CHECK{connect_timeout10#连接超时时间nb_get_retry3#重连次数delay_before_retry3#重连间隔时间connect_port3306#健康检查端口}}
  编写检测服务down后所要执行的脚本
  #vi/usr/local/MySQL/bin/MySQL.sh#!/bin/shpkillkeepalived#chmod+x/usr/local/MySQL/bin/MySQL.sh
  注:此脚本是上面配置文件notify_down选项所用到的,keepalived使用notify_down选项来检查real_server的服务状态,当发现real_server服务故障时,便触发此脚本;我们看到的是,脚本就一个命令,通过pkillkeepalived强制杀死keepalived进程,从而实现了MySQL故障自动转移。另外,我们不用担心两个MySQL会同时提供数据更新操作,因为每台MySQL上的keepalived的配置里面只有本机MySQL的IP+VIP,而不是两台MySQL的IP+VIP
  启动keepalived
  #/usr/local/keepalived/sbin/keepalived–D#ps-aux|grepkeepalived
  测试
  找一台局域网PC,然后去pingMySQL的VIP,这时候MySQL的VIP是可以ping的通的
  停止MySQL服务,看keepalived健康检查程序是否会触发我们编写的脚本
  2、192.168.1.202上keepalived安装及配置
  安装keepalived
  #tarzxvfkeepalived-1.1.20.tar.gz#cdkeepalived-1.1.20#./configure--prefix=/usr/local/keepalived--with-kernel-dir=/usr/src/kernels/2.6.18-164.el5-i686#make&&makeinstall
  配置keepalived
  这台配置和上面基本一样,但有三个地方不同:优先级为90、无抢占设置、real_server为本机IP
  #mkdir/etc/keepalived#vi/etc/keepalived/keepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{luwenju@live.cn}notification_email_fromluwenju@live.cnsmtp_server127.0.0.1smtp_connect_timeout30router_idMySQL-ha}vrrp_instanceVI_1{stateBACKUPinterfaceeth0virtual_router_id51priority90advert_int1authentication{auth_typePASSauth_pass1111}virtual_ipaddress{192.168.1.200}}virtual_server192.168.1.2003306{delay_loop2lb_algowrrlb_kindDRpersistence_timeout60protocolTCPreal_server192.168.1.2023306{weight3notify_down/usr/local/MySQL/bin/MySQL.shTCP_CHECK{connect_timeout10nb_get_retry3delay_before_retry3connect_port3306}}
  编写检测服务down后所要执行的脚本
  #vi/usr/local/MySQL/bin/MySQL.sh#!/bin/shpkillkeepalived#chmod+x/usr/local/MySQL/bin/MySQL.sh启动keepalived#/usr/local/keepalived/sbin/keepalived–D#ps-aux|grepkeepalived
  测试
  停止MySQL服务,看keepalived健康检查程序是否会触发我们编写的脚本
  三、测试
  MySQL远程登录测试
  我们找一台安装有MySQL客户端的windows,然后登录VIP,看是否能登录,在登录之两台MySQL服务器都要授权允许从远程登录
  MySQL>grantallprivilegeson*.*to'root'@'%'identifiedby'123456';QueryOK,0rowsaffected(0.00sec)MySQL>flushprivileges;QueryOK,0rowsaffected(0.00sec)
  使用客户端登录VIP测试
  C:\MySQL\bin>MySQL.exe-uroot-p123456-h292.168.1.200-P3306WelcometotheMySQLmonitor.Commandsendwith;or\g.YourMySQLconnectionidis224Serverversion:5.0.89-logSourcedistributionType'help;'or'\h'forhelp.Type'\c'toclearthecurrentinputstatement.MySQL>
  ●keepalived故障转移测试
  ※在windows客户端一直去pingVIP,然后关闭192.168.1.201上的keepalived,正常情况下VIP就会切换到192.168.1.202上面去
  ※开启192.168.1.201上的keepalived,关闭192.168.1.202上的keepalived,看是否能自动切换,正常情况下VIP又会属于192.168.1.201
  注:keepalived切换速度还是非常块的,整个切换过程只需1-3秒
  ●MySQL故障转移测试
  ※在192.168.1.201上关闭MySQL服务,看VIP是否会切换到192.168.1.202上
  ※开启192.168.1.201上的MySQL和keepalived,然后关闭192.168.1.202上的MySQL,看VIP是否会切换到192.168.1.201上
  下面是用windows客户端连接的MySQL的VIP,在切换时我执行了一个MySQL查询命令,从执行showdatabases到显示出结果时间为3-5秒(大家看到的是上面有个错误提示,不过不用担心,因为我们的keepalived切换大概为3秒左右,这3秒左右VIP是谁都不属于的)
  MySQL>showdatabases;ERROR2006(HY000):MySQLserverhasgoneawayNoconnection.Tryingtoreconnect...Connectionid:592Currentdatabase:***NONE***+--------------------+|Database|+--------------------+|information_schema||MySQL||test|+--------------------+3rowsinset(9.01sec)

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