MHA项目网站
https://code.google.com/p/mysql-master-ha/
一.环境介绍
1.主机部署
manager机:10.10.54.154
master机:10.10.54.156
slave1机:10.10.54.155(备用master)
slave2机:10.10.54.157
2.大致步骤
A.首先用ssh-keygen实现四台主机之间相互免密钥登录
B.安装MHAmha4mysql-node，mha4mysql-manager 软件包
C.建立master，slave1，slave2之间主从复制
D.管理机manager上配置MHA文件
E.masterha_check_ssh工具验证ssh信任登录是否成功
F.masterha_check_repl工具验证mysql复制是否成功
G.启动MHA manager,并监控日志文件
H.测试master(156)宕机后，是否会自动切换
3.说明：下面中括号中的主机名说明了当前操作是在哪台机子上进行的
二.首先用ssh-keygen实现四台主机之间相互免密钥登录
[manager机]
shell> ssh-keygen -t rsa -b 2048
shell> scp-copy-id root@10.10.54.155
shell> scp-copy-id root@10.10.54.156
shell> scp-copy-id root@10.10.54.157
在另外三台机子重复此步骤，使四台机子中的任何两台之间可以免密码登录
三.安装MHAmha4mysql-node，mha4mysql-manager 软件包
1.四台主机上安装MHAmha4mysql-node
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[manager,master,slave1,slave2] shell> yum update shell> yum -y install perl-DBD-MySQL ncftp shell> wget http://mysql-master-ha.googlecode.com/files/mha4mysql-node-0.53-0.noarch.rpm sehll> rpm -ivh mha4mysql-node-0.53-0.noarch.rpm |
2.在manager机子上安装mha4mysql-manager
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[manager] shell> yum install perl shell> yum install cpan shell> rpm -ivh mha4mysql-manager-0.53-0.el6.noarch.rpm error: perl(Config::Tiny) is needed by mha4mysql-manager-0.53-0.noarch perl(Log::Dispatch) is needed by mha4mysql-manager-0.53-0.noarch perl(Log::Dispatch::File) is needed by mha4mysql-manager-0.53-0.noarch perl(Log::Dispatch::Screen) is needed by mha4mysql-manager-0.53-0.noarch perl(Parallel::ForkManager) is needed by mha4mysql-manager-0.53-0.noarch perl(Time::HiRes) is needed by mha4mysql-manager-0.53-0.noarch [solution] shell> wget ftp://ftp.muug.mb.ca/mirror/centos/5.10/os/x86_64/CentOS/perl-5.8.8-41.el5.x86_64.rpm shell> wget ftp://ftp.muug.mb.ca/mirror/centos/6.5/os/x86_64/Packages/compat-db43-4.3.29-15.el6.x86_64.rpm shell> wget http://downloads.naulinux.ru/pub/NauLinux/6x/i386/sites/School/RPMS/perl-Log-Dispatch-2.27-1.el6.noarch.rpm shell> wget http://dl.fedoraproject.org/pub/epel/6/i386/perl-Parallel-ForkManager-0.7.9-1.el6.noarch.rpm shell> wget http://dl.fedoraproject.org/pub/epel/6/i386/perl-Mail-Sender-0.8.16-3.el6.noarch.rpm shell> wget http://dl.fedoraproject.org/pub/epel/6/i386/perl-Mail-Sendmail-0.79-12.el6.noarch.rpm shell> wget http://mirror.centos.org/centos/6/os/x86_64/Packages/perl-Time-HiRes-1.9721-136.el6.x86_64.rpm shell> rpm -ivh perl-Parallel-ForkManager-0.7.9-1.el6.noarch.rpm perl-Log-Dispatch-2.27-1.el6.noarch.rpm perl-Mail-Sender-0.8.16-3.el6.noarch.rpm perl-Mail-Sendmail-0.79-12.el6.noarch.rpm perl-Time-HiRes-1.9721-136.el6.x86_64.rpm shell> rpm -ivh mha4mysql-manager-0.53-0.el6.noarch.rpm |
四.建立master，slave1，slave2之间主从复制
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[master:156] 1.shell> vim /etc/my.cnf |
注意：slave1机子上也要授权，因为这个是备用