DRBD+Heartbeat+NFS实现Linux高可用群集（HA）(4)

3、接下来在两台服务器上同时操作
 
1、在主服务器和从属服务器上同时启动drbd服务：
 主服务器：[root@master drbd.d]# service drbd start
 从属服务器：[root@slave drbd.d]# service drbd start
 
2、查看两台服务器上的drbd状态：
 
master：
[root@master ~]# drbd-overview
 0:web Connected Secondary/Secondary Inconsistent/Inconsistent C r----
[root@master drbd.d]# cat /proc/drbd
version: 8.3.8 (api:88/proto:86-94)
GIT-hash: d78846e52224fd00562f7c225bcc25b2d422321d build by mockbuild@builder10.CentOS.org, 2010-06-04 08:04:16
 0: cs:Connected ro:Secondary/Secondary ds:Inconsistent/Inconsistent C r----
    ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:987928
slave
[root@slave ~]# drbd-overview
 0:web Connected Secondary/Secondary Inconsistent/Inconsistent C r----
[root@slave drbd.d]# cat /proc/drbd
version: 8.3.8 (api:88/proto:86-94)
GIT-hash: d78846e52224fd00562f7c225bcc25b2d422321d build by mockbuild@builder10.centos.org, 2010-06-04 08:04:16
 0: cs:Connected ro:Secondary/Secondary ds:Inconsistent/Inconsistent C r----
    ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:987928
 
可知两台服务器都为Secondary状态，证明还没有同步。
 
创建文件夹
[root@master ~]# mkdir /data
[root@slave ~]# mkdir /data
 
3、在master上操作：
[root@master ~]# cd /etc/drbd.d/
[root@master drbd.d]# drbdadm -- --overwrite-data-of-peer primary web
[root@master drbd.d]# drbd-overview
 0:web SyncSource Primary/Secondary UpToDate/Inconsistent C r----
   [====>...............] sync'ed: 26.5% (732280/987928)K delay_probe: 25
 
格式化：
[root@master drbd.d]# mkfs -t ext3 -L drbdweb /dev/drbd0
挂载：
[root@master drbd.d]# mkdir /mnt/1
[root@master drbd.d]# mount /dev/drbd0 /mnt/1
[root@master drbd.d]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/sda2             9.7G 2.6G 6.7G 28% /
/dev/sda1              99M   12M   83M 12% /boot
tmpfs                  97M     0   97M   0% /dev/shm
/dev/hdc              2.8G 2.8G     0 100% /mnt/cdrom
/dev/drbd0            950M   18M 885M   2% /mnt/1
 
 
再次查看两台服务器的状态：
master：
[root@master drbd.d]# service drbd status
drbd driver loaded OK; device status:
version: 8.3.8 (api:88/proto:86-94)
GIT-hash: d78846e52224fd00562f7c225bcc25b2d422321d build by mockbuild@builder10.centos.org, 2010-06-04 08:04:16
m:res cs         ro                 ds                 p mounted fstype
0:web Connected Primary/Secondary UpToDate/UpToDate C /mnt/1   ext3
 
slave
[root@slave drbd.d]# service drbd status
drbd driver loaded OK; device status:
version: 8.3.8 (api:88/proto:86-94)
GIT-hash: d78846e52224fd00562f7c225bcc25b2d422321d build by mockbuild@builder10.centos.org, 2010-06-04 08:04:16
m:res cs         ro                 ds                 p mounted fstype
0:web Connected Secondary/Primary UpToDate/UpToDate C
 
可知master为主服务，salve为从属，此时已经同步。