MYSQL+heartbeat+mon双机互备
目录
文档说明... 3
网络拓朴... 3
IP地址说明:... 3
服务器系统安装... 4
主服务器mysql安装... 4
主服务器mysql配置... 5
从服务器mysql安装... 5
从服务器mysql配置... 6
修改两台服务器的hosts 7
主服务器创建复制库并导出到从服务器以下步骤我省了... 7
mon安装(主从相同) 7
heartbeat安装(主从相同)... 8
设置服务自动启动(主从相同)
文档说明
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。
网络拓朴
IP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
服务器系统安装
CentOS4.6(完全安装)
主服务器mysql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
# 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
# .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
# su –
主服务器mysql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;
master-host=slave
master-user=copy
master-password=123123
master-connect-retry=60
replicate-do-db=zds
log-slave-updates
从服务器mysql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
# 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
# .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
# su –
从服务器mysql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;
master-host=master
master-user=copy
master-password=123123
report-host=slave
replicate-do-db=zds
log-slave-updates
binlog-do-db=zds
修改两台服务器的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
主服务器创建复制库并导出到从服务器以下步骤我省了
# mysql -p
mysql> create database zds;
mon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%]
### 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
# 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
heartbeat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/
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
# chmod 600 /etc/ha.d/authkeys
# chkconfig heartbeat off
设置服务自动启动(主从相同)
service mysqld start
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