heartbeat+drbd+mysql高可用配置

一、heartbeat
1、安装heartbeat
见Heartbeat安装及简单配置

2、配置参数
2.1）/etc/ha.d/ha.cf
logfile /var/log/ha-log
keepalive 2
deadtime 30
warntime 10
initdead 120
udpport 694
ucast eth1 10.10.10.2
auto_failback off
watchdog /dev/watchdog
node node1
node node2
ping 192.168.1.1
respawn hacluster /usr/lib/heartbeat/ipfail

2.2)/etc/ha.d/haresources
node1 IPaddr::192.168.1.100/24/eth0/ drbddisk Filesystem::/dev/drbd0::/opt/mysql::ext3 mysql

2.3)/etc/ha.d/authkeys
auth 1
1 crc

二、DRBD
1、DRBD安装
见DRBD安装配置说明

2、/etc/drbd.conf

global {
usage-count yes;
}
common {
  syncer { rate 10M; }
}
resource r0 {
protocol C;
disk {
    on-io-error   detach;
  }
net {
after-sb-0pri disconnect;
after-sb-1pri disconnect;
after-sb-2pri disconnect;
rr-conflict   disconnect;
}
on node1 {
    device     /dev/drbd0;
    disk       /dev/sdb1;
    address    10.10.10.1:7788;
    meta-disk  internal;
  }
on node2 {
    device    /dev/drbd0;
    disk      /dev/sdb1;
    address   10.10.10.2:7788;
    meta-disk internal;
  }
}

三、mysql
1、mysql安装
见mysql 5.5二进制文件安装

四、服务配置
1、配置mysql服务器（不要设置开机启动，由heartbeat控制）
修改mysql.server文件
basedir=/opt/mysql/product/5.5
datadir=/opt/mysql/mysqldata
mv /opt/mysql/product/5.5/support-files/mysql.server /etc/init.d/mysql

2、配置heartbeat
chkconfig –add heartbeat
chkconfig heartbeat on