Mysql+Heartbeat+Drbd搭建mysql的高可用

DRBD配置

1.配置要求

server4:172.25.13.4

server5:172.25.13.5

软件包:drbd-8.4.3.tar.gz

下载地址：http://oss.linbit.com/drbd/

yum install gcc -y
yum install rpm-build -y 
yum install kernel-devel -y
yum install flex -y
           

2.软件安装

[server4]

tar zxf drbd-.tar.gz
cd drbd-
./configure --enable-spec --with-km
rpmbuild -bb drbd.spec      ##制作rpm包
rpmbuild -bb drbd-km.spec   ##制作drbd-km包
rpm -ivh  ../rpmbuild/RPMS/x86_64/*  ##装上所有的包，一共8个
           

将../rpmbuild/RPMS/x86_64/下的包复制到server5上面装上

[server4][server5]

#vim /etc/drbd.d/drbd.res ##添加资源文件

resource example {
    meta-disk internal; ##内部
    device /dev/drbd1;  ##建立出来的磁盘名
    syncer {
        verify-alg sha1;##合并方式
    }
    on server4 {        ##主机4
        disk /dev/vdb;  ##磁盘和端口
        address :;
    }
    on server5 {
        disk /dev/vdb;
        address :;
    }
}
           

[server4][server5]

drbdadm create-md example   ##初始化
/etc/init.d/drbd start      ##启动
           

[server4]

drbdsetup /dev/drbd1 primary --force    ##首次转移使用权
watch -n  cat /proc/drbd
mkfs.ext4 /dev/drbd1
mount /dev/drbd1 /mnt/
cp /etc/*.conf /mnt
umount /mnt/
drbdadm secondary example
           

[server5]

drbdadm primary example
mount /dev/drbd1 /mnt/
ls /mnt/
           

heartbeat的基本配置：http://blog.csdn.net/rangewudi/article/details/72822581

heartbeat+mysql+drbd高可用

[server4][server5]

yum install mysql-server    ##这里的mysql仅仅测试
drbdadm secondary example
echo 'server4 IPaddr::172.25.13.100/24/eth0 drbddisk::example Filesystem::/dev/drbd1::/var/lib/mysql::ext4 mysqld' >/etc/ha.d/haresources
/etc/init.d/heartbeat start
           

注意/var/lib/mysql/的uid=mysql gid=mysql