LVS实战案例：LVS-DR模式多网段案例

LVS-DR模式多网段案例

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RS 的配置脚本

#!/bin/bash
vip=10.0.0.100
mask='255.255.255.255'
dev=lo:1
case 1 in
start)
     echo 1>/proc/sys/net/ipv4/conf/all/arp_ignore
     echo 1>/proc/sys/net/ipv4/conf/lo/arp_ignore
     echo 2>/proc/sys/net/ipv4/conf/all/arp_announce
     echo 2>/proc/sys/net/ipv4/conf/lo/arp_announce
     ifconfigdev vip netmaskYou can't use 'macro parameter character #' in math modemask #broadcast vip up
     #route add -hostvip dev dev
     ;;
stop)
     ifconfigdev down
     echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
     echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
     echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
     echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
     ;;
*) 
     echo "Usage: (basename0) start|stop"
     exit 1
     ;;
esac

VS的配置脚本

#!/bin/bash
vip='10.0.0.100'
iface='lo:1'
mask='255.255.255.255'
port='80'
rs1='192.168.8.101'
rs2='192.168.8.102'
scheduler='wrr'
type='-g'
case 1 in
start)
    ifconfigiface vip netmaskmask #broadcast vip up
    iptables -F    ipvsadm -A -t{vip}:{port} -sscheduler
    ipvsadm -a -t {vip}:{port} -r {rs1}type -w 1
    ipvsadm -a -t {vip}:{port} -r {rs2}type -w 1
    ;;
stop)
    ipvsadm -C
    ifconfig iface down
    ;;
*)
    echo "Usage(basename $0) start|stop“
    exit 1
esac

跨网段DR模型案例

配置

[root@rs1 ~]#cat lvs_dr_rs.sh 
#!/bin/bash
#Author:wangxiaochun
#Date:2017-08-13
vip=192.168.0.100
mask='255.255.255.255'
dev=lo:1
#rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null
#service httpd start &> /dev/null && echo "The httpd Server is Ready!"
#echo "<h1>hostname</h1>" > /var/www/html/index.html

case 1 in
start)
    echo 1>/proc/sys/net/ipv4/conf/all/arp_ignore
    echo 1>/proc/sys/net/ipv4/conf/lo/arp_ignore
    echo 2>/proc/sys/net/ipv4/conf/all/arp_announce
    echo 2>/proc/sys/net/ipv4/conf/lo/arp_announce
    ifconfigdev vip netmaskmask #broadcast vip up
    #route add -hostvip dev dev
    echo "The RS Server is Ready!"
    ;;
stop)
    ifconfigdev down
    echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
    echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
    echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
    echo "The RS Server is Canceled!"
    ;;
*) 
    echo "Usage: (basename0) start|stop"
    exit 1
    ;;
esac

[root@rs1 ~]#bash lvs_dr_rs.sh  start
[root@rs2 ~]#bash lvs_dr_rs.sh  start

[root@LVS ~]#cat lvs_dr_vs.sh 
#!/bin/bash
#Author:wangxiaochun
#Date:2017-08-13
vip='192.168.0.100'
iface='lo:1'
mask='255.255.255.255'
port='80'
rs1='10.0.0.7'
rs2='10.0.0.17'
scheduler='wrr'
type='-g'
rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/null

case 1 in
start)
    ifconfigiface vip netmaskmask #broadcast vip up
    iptables -F

    ipvsadm -A -t{vip}:{port} -sscheduler
    ipvsadm -a -t {vip}:{port} -r {rs1}type -w 1
    ipvsadm -a -t {vip}:{port} -r {rs2}type -w 1
    echo "The VS Server is Ready!"
    ;;
stop)
    ipvsadm -C
    ifconfig iface down
    echo "The VS Server is Canceled!"
    ;;
*)
    echo "Usage:(basename $0) start|stop"
    exit 1
    ;;
esac

[root@LVS ~]#bash lvs_dr_vs.sh start

[root@Router ~]#nmcli connection modify  eth0 +ipv4.addresses  192.168.0.200/24 
[root@Router ~]#nmcli connection reload
[root@Router ~]#nmcli connection up eth0
[root@Router ~]#ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:4d:ef:3e brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.200/24 brd 10.0.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet 192.168.0.200/24 brd 192.168.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe4d:ef3e/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:4d:ef:48 brd ff:ff:ff:ff:ff:ff
    inet 172.20.200.200/16 brd 172.20.255.255 scope global noprefixroute eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe4d:ef48/64 scope link 
       valid_lft forever preferred_lft forever

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