DRDB Installation Test

a . Environment Preparation

System environment

CentOS Release 6.3 (Final)

Kernel information

2.6.32-279.el6.x86_64

IP Address

VIP 192.168.64.120

Master 192.168.64.132 Heart jumper:10.0.0.1 hostname :D bmaster.test

Slave 192.168.64.135 Heart jumper:10.0.0.2 host name :D bbak.test

Mirrored disk

Master/dev/sdc

Slave/dev/sdc

Fdisk-l

Install dependent environments

Yum-y install gcc gcc-c++ make Glibcflex kernel kernel-devel kernel-headers

Download the installation package

wget http://oss.linbit.com/drbd/8.4/drbd-8.4.3.tar.gz

two . Installation Configuration

Installation:

Ls

Tar zxfdrbd-8.4.3.tar.gz

Ls

CD drbd-8.4.3

./CONFIGURE--PREFIX=/USR/LOCAL/DRBD--with-km

Ls/usr/src/kernels/2.6.32-431.5.1.el6.x86_64

ls/usr/src/kernels/

Uname-r

Makekdir=/usr/src/kernels/2.6.32-431.5.1.el6.x86_64

echo $?

Make install

echo $?

Add Boot Boot

Cp/usr/local/drbd/etc/rc.d/init.d/drbd/etc/rc.d/init.d

Chkconfig--ADDDRBD

Chkconfig Drbdon

Loading DRBD Module

Depmod

Modprobe DRBD

Modprobe DRBD

Loading DRBD Module Error

[[Email protected]]# depmod

[Email protected]]# modprobe DRBD

FATAL:MODULEDRBD not found.

Error: Fatal:module DRBD not found. kernel not supported, update kernel, then restart

To see if the module is loaded into the kernel

[[Email protected] ~] #lsmod |grep DRBD

DRBD 325658 0

LIBCRC32C 1246 1 DRBD

after successful installation, the system will have the command of DRBD.

/sbin/dr

Dracut Drbdadm Drbdmeta Drbdsetup

Master configuration file

Cat>>/usr/local/drbd/etc/drbd.conf <<eof

# You can Findan example in/usr/share/doc/drbd.../drbd.conf.example

Include "drbd.d/global_common.conf";

Include "Drbd.d/*.res";

Eof

Global configuration file

Cp/usr/local/drbd/etc/drbd.d/global_common.conf/usr/local/drbd/etc/drbd.d/global_common.conf.bk

>/usr/local/drbd/etc/drbd.d/global_common.conf

Cat>>/usr/local/drbd/etc/drbd.d/global_common.conf <<eof

Global {

Usage-count No;

# Minor-count Dialog-refreshdisable-ip-verification

}

Common {

Protocol C;

startup {

Wfc-timeout 120;

Degr-wfc-timeout 120;

}

Disk {

On-io-error detach;

Fencing resource-only;

}

NET {

Cram-hmac-alg "SHA1";

Shared-secret "Mydrbdlab";

}

Syncer {

Rate 100M;

}

}

Eof

Resource configuration file

Cat>>/usr/local/drbd/etc/drbd.d/mysql.res <<eof

Resource MySQL {

On dbmaster.test {

device/dev/drbd0;

DISK/DEV/SDC1;

Address 10.0.0.1:7789;

Meta-disk internal;

}

On dbbak.test {

device/dev/drbd0;

DISK/DEV/SDC1;

Address 10.0.0.2:7789;

Meta-disk internal;

}

}

Eof

DRBD Device Creation

[[Email protected]]# mknod/dev/drbd0 B 147 0

[[Email protected]]# drbdadm CREATE-MD MySQL

Error :

' MySQL ' isn't defined in your config (forthis host).

Online said error 4:' DRBD ' notdefined in your config (for this host). This is because it is not loaded into the DRBD module

Solution: Need to specify /etc/hosts inside the host

Normal :

[Email protected] drbd.d]# DRBDADMCREATE-MD my1

Writing Meta Data ...

Initializing activity log

Not initializing bitmap

New DRBD meta data Block successfullycreated.

[Email protected] drbd.d]# Drbdadm create-mdmy1

Writing Meta Data ...

Initializing activity log

Not initializing bitmap

New DRBD meta data Block successfullycreated.

Start DRBD

/usr/local/drbd/etc/rc.d/init.d/drbdstart

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

Chkconfig ADDDRBD

[Email protected]]# ps-ef|grep DRBD

Root 13262 2 0 13:46? 00:00:00 [Drbd-reissue]

Root 13600 2 0 15:42? 00:00:00 [Drbd_submit]

Root 13604 2 0 15:42? 00:00:00 [Drbd_w_my1]

Root 13614 2 0 15:42? 00:00:00 [Drbd_r_my1]

Root 13621 2 0 15:42? 00:00:00 [Drbd_a_my1]

Root 13625 2384 0 15:43 pts/1 00:00:00 grep DRBD

View status

[Email protected]]#/USR/LOCAL/DRBD/ETC/RC.D/INIT.D/DRBD Status

DRBD driverloaded OK; Device Status:

version:8.4.3 (api:1/proto:86-101)

git-hash:89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected],2014-05-09 13:43:20

M:res CS ro ds p mounted fstype

0:my1 Connected secondary/secondary inconsistent/inconsistent C

[[Email protected]]# CAT/PROC/DRBD

version:8.4.3 (api:1/proto:86-101)

git-hash:89a294209144b68adb3ee85a73221f964d3ee515 build by [email protected],2014-05-09 13:43:20

0:cs:connected ro:secondary/secondaryds:inconsistent/inconsistent C R-----

ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0ua:0 ap:0 ep:1 wo:f oos:5236960

[[Email protected]]#

settings for the master node (primary)

DRBDSETUPPRIMARY/DEV/DRBD0--force Configuration as the primary node

Mount Device (primary)

Description: Mount Before the DRBD partition, first verify that the DRBD partition of the current host is the primary state and that the status can be queried through the Cat/proc/drdb command.

Create File System (primary)

Mkfs.ext4/dev/drbd0

Mount Device (primary)

Mount/dev/drbd0/data--->dbdata

Test

[[Email protected]]# touch {1..9}

Uninstall downgrade

[[Email protected]~]# umount/data

[Email protected]~]# drbdsetup/dev/drbd0 Secondary

Upgrade, then mount, view

[Email protected]]# drbdsetup/dev/drbd0 Primary

[[Email protected]]# mount/dev/drbd0/data

[Email protected]]# ls

[[Email protected]]# cd/data/

[Email protected]]# ls

1 2 3 4 5 6 7 8 9 ABC Lost+found rzsz-3.48.tar.gz

three . configuration File Description

The above related configuration file description:

Cat/etc/drbd.d/global_common.conf

Global {

Usage-count No; #? canceling The DRBD user statistics

# Minor-count Dialog-refresh disable-ip-verification

}

Common {

Protocol C; #? Select the C protocol for DRBD

Startup {#? Start Delay Configuration

Wfc-timeout 120;

Degr-wfc-timeout 120;

}

Disk {#?fence anti-brain crack

On-io-error detach;

Fencing resource-only;

}

NET {

Cram-hmac-alg "SHA1"; #? communication algorithms used by the primary and standby nodes

Shared-secret "Mydrbdlab";

}

Syncer {

Rate 100M; #? sync rate, depending on bandwidth

}

}

Cat/etc/drbd.d/web.res

Resource Web {#?web is a resource name

On Master-nfs {#?master-nfs is the node name

device/dev/drbd0; #? Defining virtual Devices

DISK/DEV/SDB1; #? Specify a real device

Address 192.168.2.1:7789; #? listening to itself IP Port

Meta-disk internal;

}

On Slave-nfs {

device/dev/drbd0;

DISK/DEV/SDB1;

Address 192.168.2.2:7789;

Meta-disk internal;

}

}

Eof

This article is from the "Small Box" blog, please be sure to keep this source http://zhangxiaohe.blog.51cto.com/7821029/1409978