MYSQL+Heartbeat+Mon 双机互备

MYSQL+heartbeat+mon双机互备

 

目录

 

 

本文档，设计了一个MySQL主从复制，用mon对服务器的mysql服务进行监控，heartbeat提供对外的VIP，mysql从服务器通过获得主服务器mysql的日志，把数据同步到从服务器，当主服务器down机后，mon检测到主服务器down机后，会停掉主机的heartbeat服务，VIP和mon服务将会自己转移到从服务器，当主服务器处理好后，会通过从服务器的日志把数据同步到主服务器，待主服务器同步完数据后，可以手机把VIP和mon服务移回到主服务器。

地址说明：

Master

eth0:172.20.67.13 eth1: 172.20.67.22;

Slave

eth0:172.20.67.46 eth1: 172.20.67.53;

VIP:172.20.67.23

CentOS4.6(完全安装)

安装

# mv /etc/rc.d/init.d/mysqld /etc/rc.d/init.d/mysqld.bak

# mv /etc/my.cnf /etc/my.cnf.bak

# rm -rf /var/lib/mysql/

# vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=master

# service network restart

# su –

# cd /usr/local/src/

# tar zxvf mysql-5.0.51a.tar.gz

# cd mysql-5.0.51a

# ./configure --prefix=/usr/local/mysql --localstatedir=/var/lib/mysql --with-mysqld-user=mysql --without-debug --with-big-tables --with-charset=gbk --with-collation=gbk_chinese_ci --with-extra-charsets=all --with-pthread --enable-thread-safe-client --enable-assembler --without-isam --without-innodb --without-ndb-debug --with-mysqli && make && make install

# cd /usr/local/mysql/

# bin/mysql_install_db --user=mysql

#  chown -R root:mysql .

# chown -R mysql /var/lib/mysql

# cp share/mysql/my-huge.cnf /etc/my.cnf

# cp share/mysql/mysql.server /etc/rc.d/init.d/mysqld

# chkconfig mysqld off

# chmod 755 /etc/rc.d/init.d/mysqld

# chkconfig --add mysqld

# vi /root/.bash_profile

# .bash_profile

 

# Get the aliases and functions

if [ -f ~/.bashrc ]; then

        . ~/.bashrc

fi

 

# User specific environment and startup programs

 

PATH=/usr/local/mysql/bin:$PATH:$HOME/bin

 

export PATH

unset USERNAME

# su –

配置

# service mysqld restart

# mysql

mysql> use mysql

mysql> update user set password=password('123123') where user='root';

mysql> grant replication slave on *.* to 'copy'@'%' identified by '123123';

mysql> flush privileges;

# vi /etc/my.cnf（增加以下内容）

master-host=slave

master-user=copy

master-password=123123

master-connect-retry=60

replicate-do-db=zds

log-slave-updates

binlog-do-db=zds

安装

# mv /etc/rc.d/init.d/mysqld /etc/rc.d/init.d/mysqld.bak

# mv /etc/my.cnf /etc/my.cnf.bak

# rm -rf /var/lib/mysql/

# vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=slave

# service network restart

# hostname slave

# su –

# cd /usr/local/src/

# tar zxvf mysql-5.0.51a.tar.gz

# cd mysql-5.0.51a

# ./configure --prefix=/usr/local/mysql --localstatedir=/var/lib/mysql --with-mysqld-user=mysql --without-debug --with-big-tables --with-charset=gbk --with-collation=gbk_chinese_ci --with-extra-charsets=all --with-pthread --enable-thread-safe-client --enable-assembler --without-isam --without-innodb --without-ndb-debug --with-mysqli && make && make install

# cd /usr/local/mysql/

# bin/mysql_install_db --user=mysql

#  chown -R root:mysql .

# chown -R mysql /var/lib/mysql

# cp share/mysql/my-huge.cnf /etc/my.cnf

# cp share/mysql/mysql.server /etc/rc.d/init.d/mysqld

# chkconfig mysqld off

# chmod 755 /etc/rc.d/init.d/mysqld

# chkconfig --add mysqld

# vi /root/.bash_profile

# .bash_profile

 

# Get the aliases and functions

if [ -f ~/.bashrc ]; then

        . ~/.bashrc

fi

 

# User specific environment and startup programs

 

PATH=/usr/local/mysql/bin:$PATH:$HOME/bin

 

export PATH

unset USERNAME

# su –

配置

# service mysqld start

# mysql

mysql> use mysql

mysql> update user set password=password('123123') where user='root';

mysql> grant replication slave on *.* to 'copy'@'%' identified by '123123';

mysql> flush privileges;

# vi /etc/my.cnf（增加以下内容）

master-host=master

master-user=copy

master-password=123123

report-host=slave

replicate-do-db=zds

log-slave-updates

binlog-do-db=zds

server-id       = 2（些处为修改）

# vi /etc/hosts

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1               localhost.localdomain localhost

172.20.67.13    master

172.20.67.22    master

172.20.67.46    slave

172.20.67.53    slave

# mysql -p

mysql> create database zds;

安装(主从相同)

# rpm -ihv *

warning: mon-1.2.0-1.el4.rf.i386.rpm: V3 DSA signature: NOKEY, key ID 6b8d79e6

Preparing...                ########################################### [100%]

   1:perl-Time-Period       ########################################### [ 13%]

   2:perl-Net-SNPP          ########################################### [ 25%]

   3:perl-Math-TrulyRandom  ########################################### [ 38%]

   4:perl-Convert-BER       ########################################### [ 50%]

   5:perl-Mon               ########################################### [ 63%]

   6:perl-AOL-TOC           ########################################### [ 75%]

   7:mon                    ########################################### [ 88%]

   8:perl-Authen-PAM        ########################################### [100%]

# vi /etc/mon/mon.cf

### Extremely basic mon.cf file

 

### global options

cfbasedir   = /etc/mon

pidfile     = /var/run/mon.pid

statedir    = /var/lib/mon/state.d

logdir      = /var/lib/mon/log.d

dtlogfile   = /var/lib/mon/log.d/downtime.log

alertdir    = /usr/lib/mon/alert.d

mondir      = /usr/lib/mon/mon.d

maxprocs    = 20

histlength  = 100

randstart   = 60s

authtype    = pam

userfile    = /etc/mon/userfile

 

### group definitions (hostnames or IP addresses)

hostgroup servers master（从机把master改为slave）

 

watch servers

    service mysql

        interval 10s

        monitor msql-mysql.monitor

        period wd {Mon-Sun}

                alert test.alert

       alertevery 600s

 

alertafter 3

 

 

### See /usr/doc for the original example...

# vi /usr/lib/mon/alert.d/test.alert

#!/bin/sh

#

# $Id: test.alert,v 1.1.1.1 2004/06/09 05:18:07 trockij Exp $

echo "`date` $*" >> /tmp/test.alert.log

service heartbeat stop

# chmod 777 /usr/lib/mon/alert.d/test.alert

# vi /usr/lib/mon/mon.d/msql-mysql.monitor（以下为修改的部份，本脚本来自mon的源码包）

   # $dbh = DBI->connect( "DBI:$mode:$database:$host:$options{port}", $username, $password);

$dbh = DBI->connect( "DBI:mysql:mysql:slave:$options{port}", root, 123123);

# chmod 777 /usr/lib/mon/mon.d/mysql.monitor

chkconfig mon off

 

安装（主从相同）

yum install heartbeat

# cp /usr/share/doc/heartbeat-2.1.3/ha.cf /etc/ha.d/

# cp /usr/share/doc/heartbeat-2.1.3/authkeys /etc/ha.d/

# cp /usr/share/doc/heartbeat-2.1.3/haresources /etc/ha.d/

# vi /etc/ha.d/ha.cf

debugfile /var/log/ha-debug

logfile /var/log/ha-log

logfacility     local0

keepalive 2

deadtime 30

warntime 10

initdead 120

udpport 694

bcast   eth1

auto_failback off

node    master

node    slave

# vi /etc/ha.d/haresources

master 172.20.67.23 mon

# vi /etc/ha.d/authkeys

auth 1

1 crc

# chmod 600 /etc/ha.d/authkeys

# chkconfig heartbeat off

# vi /etc/rc.local

service mysqld start

service heartbeat start