MySQL配备HeartBeat实现心跳监控和浮动IP

MySQL配置HeartBeat实现心跳监控和浮动IP

　　1. 初始化环境配置

/sbin/chkconfig --add mysqld 

/sbin/chkconfig mysqld on

ln -s /usr/local/mysql/bin/mysql /sbin/mysql 

ln -s /usr/local/mysql/bin/mysqladmin /sbin/mysqladmin

echo "/usr/local/mysql/lib/mysql" >> /etc/lnf

/sbin/ldconfig

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

2. 安装HeartBeat组件

rpm -ivh libnet-1.1.2.1-2.1.i386.rpm

rpm -ivh heartbeat-pils-2.1.4-2.1.i386.rpm

rpm -ivh --nodeps heartbeat-stonith-2.1.4-2.1.i386.rpm

rpm -ivh --nodeps heartbeat-2.1.4-2.1.i386.rpm

rpm -ivh --nodeps heartbeat-devel-2.1.4-2.1.i386.rpm

rpm -ivh --nodeps heartbeat-ldirectord-2.1.4-2.1.i386.rpm

3. 配置 HA的各配置文

shell> cp /usr/share/doc/packages/heartbeat/authkeys /etc/ha.d/

shell> cp /usr/share/doc/packages/heartbeat/haresources /etc/ha.d/

shell> cp /usr/share/doc/packages/heartbeat/ha.cf /etc/ha.d/

(1) 配置心跳的加密方式

shell> vi /etc/ha.d/authkeys

#如果使用双机对联线(双绞线)，可以配置如下：

auth 1

1 crc

shell> chmod 600 /etc/ha.d/authkeys 

(2) 配置心跳的监控：haresources

shell> vi /etc/ha.d/haresources

#各主机这部分应完全相同。IP为虚拟IP

mysqlA IPaddr::192.168.1.199 ipvsadm mysqld

(3) 创建日志目录

shell> mkdir -p /var/log/ha_log

shell> chmod 777 /var/log/ha_log/

(4) 编辑ha.cf

shell> vi /etc/ha.d/ha.cf

logfile /var/log/ha_log/ha.log

bcast eth0

keepalive 2

warntime 10

deadtime 30

initdead 120

hopfudge 1

udpport 694

auto_failback on

node feng

node feng2

ping 192.168.1.1

respawn hacluster /usr/lib/heartbeat/ipfail

apiauth ipfail gid=root uid=root

debugfile /var/log/ha_log/ha_debug.log

# 打开调度器转发选项

echo 1 > /proc/sys/net/ipv4/ip_forward

# 设置ipvsadm的巡回监测

ipvsadm -A -t 192.168.1.199:3306 -s rr

ipvsadm -a -t 192.168.1.199:3306 -r 192.168.1.201:3306 -m

ipvsadm -a -t 192.168.1.199:3306 -r 192.168.1.202:3306 -m

执行后进行监测：

ipvsadm --list

HA服务的启动、关闭以及测试启动HA:

service heartbeat start

关闭HA; service heartbeat stop

进行监控: service heartbeat status

heartbeat 默认使用udp 694端口进行心跳监测。 如果系统有使用iptables 做防火墙

iptables -I INPUT -p udp --dport 694 -j ACCEPT