• 安装drbd过程:(实验借鉴:http://www.it165.net/os/html/201309/6317.html)

  • yum -y install libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 gcc gcc-c++ autoconf

  • # wget

  • hostname web1/web2 不然在后续找不到资源定义  关闭防火墙以及注意selinux

    注意:安装kernel-devel一定要和你uname -r 看到的内核版本一致,建议kernel-devel用本地源安装,不要用网络源安装 

  • # tar -zxvf drbd-8.4.3.tar.gz

    # cd drbd-8.4.3

  • ./configure --prefix=/usr/local/drbd --with-km启用内核模块

  • make KDIR=/usr/src/kernels/2.6.32-358.el6.i686/ 编译到内核里面

  • make install

  • cp /usr/local/drbd/etc/rc.d/init.d/drbd /etc/init.d/

  • cd /usr/local/drbd/var;mkdir run;cd run;mkdir drbd

  • 然后回到解压的目录,执行清理:

  • cd /lvs/drbd-8.4.3/drbd;make clean

  • make KDIR=/usr/src/kernels/2.6.32-358.el6.i686/;make && make install

  • cp drbd.ko /lib/modules/2.6.32-358.el6.i686/kernel/lib/

  • modprobe drbd  加载到内核

  • lsmod | grep drbd

  • mknod /dev/drbd0 b 147 0

  • +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

  • cd /usr/local/drbd/etc/drbd.d

  • vi drbd.res

    resource drbd {
            on web1 {
            device /dev/drbd0;
            disk /dev/sdb1;
            address 192.168.1.22:7789;
            meta-disk internal;
         }
            on web2 {
            device /dev/drbd0;
            disk /dev/sdb1;
            address 192.168.1.23:7789;
            meta-disk internal;
         }
    }

  • drbdadmin create-md drbd

  • /etc/init.d/drbd start

1 需要注意的是,先要drbdadmn create-md drbd==》service drbd start (如果还是不一致,请检查配配置文件磁盘名是否正确)

主:

drbdadm -- --overwrite-data-of-peer primary all 设置主

drbdadm role drbd 

mkfs.ext4 /dev/drbd0

partprobe /dev/drbd0 

mount /dev/drbd0 /挂载

2 主切换到备,然后主需要再恢复使用,主和备都需要start查找一下

3如果是yum安装drbd一定要将/usr/share/doc/drbd83-8.3.15下的drbd.conf覆盖到/etc/下面的drbd.conf。否则初始化会包没有定义资源错误  

4还需要注意的是:两台机器先分区-然后drbd设置好主借点后,在格式化/dev/drbd资源,然后再挂载