###配置资源文件redisk.res
# vi /usr/local/drbd/etc/drbd.d/redisk.res
resource redisk {
on orasrv1.xlk.com {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.21.10:7789;
meta-disk internal;
}
on orasrv2.xlk.com {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.21.13:7789;
meta-disk internal;
}
}
###也可以通过copy方式直接将配置文件copy到节点2，则无需单独配置2个配置文件，如下：
# scp /usr/local/drbd/etc/drbd.d/* 192.168.21.13:/usr/local/drbd/etc/drbd.d/
# scp /usr/local/drbd/etc/drbd.conf 192.168.21.13:/usr/local/drbd/etc/
6、创建device metadata(两节点执行)
# drbdadm create-md redisk
Writing meta data...
initializing activity log
NOT initialized bitmap
New drbd meta data block successfully created.
[root@orasrv1 drbd.d]# drbdadm up redisk
[root@orasrv1 drbd.d]# /etc/init.d/drbd status
drbd driver loaded OK; device status:
version: 8.3.15 (api:88/proto:86-97)
GIT-hash: 0ce4d235fc02b5c53c1c52c53433d11a694eab8c build by root@orasrv1.xlk.com, 2015-10-31 09:16:05
m:res cs ro ds p mounted fstype
0:redisk WFConnection Secondary/Unknown Inconsistent/DUnknown C1
5、设置Primary节点(主节点)
以下操作仅在节点1(orasrv1)执行
# drbdadm primary --force redisk
0: State change failed: (-2) Need access to UpToDate data
Command 'drbdsetup 0 primary' terminated with exit code 17
# drbdadm -- --overwrite-data-of-peer primary redisk
# mkfs.ext3 /dev/drbd0
# mkdir /data
# mount /dev/drbd0 /data
# df -h |grep data
/dev/drbd0 2.0G 36M 1.9G 2% /data
###在第二个节点上创建/data目录
# mkdir /data
###查看drbd状态信息：
#cat /proc/drbd
四、DRBD数据镜像功能测试
###首先在主节点完成如下操作
# cp -R /usr/local/drbd /data
# ls /data/drbd
etc lib sbin share var
# du -sh /data/drbd
324K /data/drbd
# umount /data
# drbdadm secondary redisk
# cat /proc/drbd
version: 8.3.15 (api:88/proto:86-97)
GIT-hash: 0ce4d235fc02b5c53c1c52c53433d11a694eab8c build by root@orasrv1.xlk.com, 2015-10-31 10:58:13
0: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate C r-----
ns:1044700 nr:0 dw:33780 dr:1045517 al:3 bm:64 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
###在备用节点完成如下操作
# drbdadm primary redisk
# cat /proc/drbd
version: 8.3.15 (api:88/proto:86-97)
GIT-hash: 0ce4d235fc02b5c53c1c52c53433d11a694eab8c build by root@orasrv2.xlk.com, 2015-10-31 10:59:26
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:0 nr:1044700 dw:1044700 dr:672 al:0 bm:64 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
# mount /dev/drbd0 /data
# du -sh /data/drbd ###两节点数据目录及大小完全一致
324K /data/drbd
Linux 高可用（HA）集群之DRBD详解