标签：drbd
1、添加硬盘，然后分区fdisk -l fdisk /dev/sdb partprob /dev/sdb
2、主备节点FQDN
主：hostname drbd1.company.com
备：hostname drbd2.company.com
写入/etc/hosts文件：
192.168.0.182 drbd1.company.com 192.168.0.183 drbd2.company.com
3、yum安装drbd
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm yum install drbd83-utils kmod-drbd83 modprobe drbd lsmod | grep drbd echo "modprobe drbd" >>/etc/rc.local
4、配置drbd（主备相同）
配置例子文件：/usr/share/doc/drbd83-utils-8.3.16/drbd.conf.example
全局配置：
vim /etc/drbd.d/global_common.conf
global {
usage-count no;
}
common {
protocol C;
handlers {
pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";
}
startup {
wfc-timeout 0;
degr-wfc-timeout 120;
}
disk {
on-io-error detach;
}
net {
cram-hmac-alg "sha1";
shared-secret "nfs-drbd";
}
syncer {
rate 30M;
}
}资源文件：
vim /etc/drbd.d/redisk.res
resource redisk {
on drbd1.company.com {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.0.182:7789;
meta-disk internal;
}
on drbd2.company.com {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.0.183:7789;
meta-disk internal;
}
}5、drbd初始化与启动
主备节点执行：
drbdadm create-md redisk drbdadm up redisk service drbd start
主节点执行，设置为primary：
drbdadm -- --overwrite-data-of-peer primary redisk
查看节点状态：
cat /proc/drbd drbd-overview
6、同步完成后，在主节点创建文件系统，格式化（备节点数据不能访问）
mkfs.ext4 /dev/drbd0 mkdir /drbd mount /dev/drbd0 /drbd/
7、主备切换
主：
umount /drbd/ drbdadm secondary redisk
备：
drbdadm primary redisk mkdir /drbd mount /dev/drbd0 /drbd/
标签：drbd
原文地址：http://blog.51cto.com/qicheng0211/2055814
