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1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet 172.18.109.237/32 brd 172.18.109.237 scope global lo:0
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:4a:dc:9f brd ff:ff:ff:ff:ff:ff
inet 172.18.109.233/26 brd 172.18.109.255 scope global eth0
7、创建新分区
node1与node2两个节点上各提供了一个相同大小的分区作为DRBD设备，这里我们在两个节点上分别创建"/dev/sdb1"作为DRBD设备，大小容量为2G
[root@node1 ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xf8ff7e0d.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf8ff7e0d
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-261, default 261): +1G
Command (m for help): w
partx /dev/sdb #让内核重新读取分区
二、安装配置drbd
1、在两个节点安装
[root@node2 ~]# yum install drbd84-utils.x86_64 kmod-drbd84.x86_64
[root@node1 ~]# yum install drbd84-utils.x86_64 kmod-drbd84.x86_64
2、查看DRBD配置文件
ll /etc/drbd.conf;ll /etc/drbd.d/
-rw-r--r-- 1 root root 133 May 14 21:12 /etc/drbd.conf #主配置文件
total 4
-rw-r--r-- 1 root root 1836 May 14 21:12 global_common.conf #全局配置文件
######查看主配置文件内容
cat /etc/drbd.conf
######主配置文件中包含了全局配置文件及"drbd.d/"目录下以.res结尾的文件
# You can find an example in /usr/share/doc/drbd.../drbd.conf.example
include "drbd.d/global_common.conf";
include "drbd.d/*.res";
3、修改配置文件如下：
[root@node1 ~]#vim /etc/drbd.d/global_common.conf
global {
usage-count no;
# minor-count dialog-refresh disable-ip-verification
# cmd-timeout-short 5; cmd-timeout-medium 121; cmd-timeout-long 600;
}
common {
protocol C;
handlers {
# These are EXAMPLE handlers only.
# They may have severe implications,
# like hard resetting the node under certain circumstances.
# Be careful when chosing your poison.
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";
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