LVS-DR for Centos SERVER CLUSTERS

Topology:

1. LVS configuration script:

Installation required: ipvsadm-1.24-10.i386.rpm

Vi/etc/rc. d/init. d/lvsdr
#! /Bin/bash
Vip = 192.168.1.249
Web1 = 192.168.1.20.
Web2 = 192.168.1.252
./Etc/rc. d/init. d/functions
Case "$1" in
Start)
Echo "start lvs-dr"
Echo "1">/proc/sys/net/ipv4/ip_forward
Ifconfig eth0: 0 $ {vip} broadcast $ {vip} netmask 255.255.255.255 up
Route add-host $ {vip} dev eth0: 0
Ipvsadm-C
Ipvsadm-A-t $ {vip}: 80-s rr
Ipvsadm-a-t $ {vip}: 80-r $ {web1}: 80-g
Ipvsadm-a-t $ {vip}: 80-r $ {web2}: 80-g
Ipvsadm
;;
Stop)
Echo "stop lvs-dr"
Echo "0">/proc/sys/net/ipv4/ip_forward
Ipvsadm-C
Ifconfig eth0: 0 down
;;

*)
Echo "Usage: $0 {start | stop }"
Exit 1
Esac

Start:

[Root @ linux-1 lvs] # service lvsdr start
Start lvs-dr
IP Virtual Server version 1.2.1 (size = 4096)
Prot LocalAddress: Port sched1_flags
-> RemoteAddress: Port Forward Weight ActiveConn InActConn
TCP 192.168.1.249: http rr
-> 192.168.1.252: http Route 1 0 0
-> 192.168.1.133: http Route 1 0 0

Ii. web1 configuration script

Vi/etc/rc. d/init. d/lvsweb
#! /Bin/bash
Vip = 192.168.1.249
./Etc/rc. d/init. d/functions
Case "$1" in

Start)
Echo "start lvs-web1"
Ifconfig lo: 0 $ {vip} broadcast $ {vip} netmask 255.255.255.255 up
Route add-host $ {vip} dev lo: 0
Echo "1">/proc/sys/net/ipv4/conf/lo/arp_ignore
Echo "2">/proc/sys/net/ipv4/conf/lo/arp_announce
Echo "1">/proc/sys/net/ipv4/conf/all/arp_ignore
Echo "2">/proc/sys/net/ipv4/conf/all/arp_announce
;;

Stop)
Echo "stop lvs-web1"
Ifconfig lo: 0 down
Echo "0">/proc/sys/net/ipv4/conf/lo/arp_ignore
Echo "0">/proc/sys/net/ipv4/conf/lo/arp_announce
Echo "0">/proc/sys/net/ipv4/conf/all/arp_ignore
Echo "0">/proc/sys/net/ipv4/conf/all/arp_announce
;;

*)
Echo "Usage: $0 {start | stop }"
Exit 1
Esac

STARTUP script:

[Root @ linux-2 local] # service lvsweb start
Start lvs-web1

Create a file named index.html on/var/www/html on web1.

Cat/var/www/html/index.html
The is web1

3. web2 configuration script

Vi/etc/rc. d/init. d/lvsweb
#! /Bin/bash
Vip = 192.168.1.249
./Etc/rc. d/init. d/functions
Case "$1" in

Start)
Echo "start lvs-web2"
Ifconfig lo: 0 $ {vip} broadcast $ {vip} netmask 255.255.255.255 up
Route add-host $ {vip} dev lo: 0
Echo "1">/proc/sys/net/ipv4/conf/lo/arp_ignore
Echo "2">/proc/sys/net/ipv4/conf/lo/arp_announce
Echo "1">/proc/sys/net/ipv4/conf/all/arp_ignore
Echo "2">/proc/sys/net/ipv4/conf/all/arp_announce
;;

Stop)
Echo "stop lvs-web2"
Ifconfig lo: 0 down
Echo "0">/proc/sys/net/ipv4/conf/lo/arp_ignore
Echo "0">/proc/sys/net/ipv4/conf/lo/arp_announce
Echo "0">/proc/sys/net/ipv4/conf/all/arp_ignore
Echo "0">/proc/sys/net/ipv4/conf/all/arp_announce
;;

*)
Echo "Usage: $0 {start | stop }"
Exit 1
Esac

STARTUP script:

[Root @ linux-3 ~] # Service lvsweb start
Start lvs-web2

Create a file named index.html on/var/www/html on web2.

Cat/var/www/html/index.html
The is web2

##################### Success of the simple LVS-DR cluster ############ ######

4. Monitor LVS (installed on the LVS server)

1. Install rrdtool

Wget http://down1.chinaunix.net/distfiles/rrdtool-1.2.30.tar.gz

Tar zxvf rrdtool-1.2.30.tar.gz

Cd rrdtool-1.2.30

./Configure -- prefix =/usr/local/rrdtool

Make & make install

Echo "/usr/local/rrdtool/lib">/etc/ld. so. conf

Ldconf-v

2. Install lvs-rrd

Wget http://tepedino.org/lvs-rrd/lvs-rrd-v0.7.tar.gz

Tar zxvf lvs-rrd-v0.7.tar.gz

Music lvs-rrd-v0.7/var/www/html/lvs-rrd

3. Configure lvs-rrd

Cd/var/www/html/lvs-rrd

Vi lvs. rrd. update (you only need to configure the specified path)

RRDTOOL = "/usr/local/rrdtool/bin/rrdtool"
IPVSADM = "/sbin/ipvsadm"
WORKDIR = "/var/www/html/lvs-rrd"

Vi graph-lvs.sh

WORKDIR = "/var/www/html/lvs-rrd"
RRDTOOL = "/usr/local/rrdtool/bin/rrdtool"
GRAPHS = "$ WORKDIR/graphs"
WEBPATH = "/lvs-rrd/graphs"

4. Set permissions:

Chown-R apache. apache graphs/

5. Use crontab to update

Crontab-e

* ***/Var/www/html/lvs-rrd/lvs. rrd. update 2>/dev/null

############ ##################

Test results:

Http: // 192.168.1.250/lvs-rrd/

This article from the "game technology blog" blog, please be sure to keep this source http://youzao.blog.51cto.com/3946111/751443