LVS配置(NAT,TUNNEL,DR)

1. NAT mode
    loadbalancer configure:
        ifconfig eth0 192.168.10.184 netmask 255.255.255.0 up
        echo 1 > /proc/sys/net/ipv4/ip_forward
        echo 0 > /proc/sys/net/ipv4/conf/all/send_redirects
        echo 0 > /proc/sys/net/ipv4/conf/default/send_redirects
        echo 0 > /proc/sys/net/ipv4/conf/eth0/send_redirects
        echo 0 > /proc/sys/net/ipv4/conf/eth1/send_redirects
        ipvsadm -A -t 192.168.10.184:7777 -s rr
        ipvsadm -a -t 192.168.10.184:7777 -r 192.168.10.230:7777 -m

    real server configure:
        ifconfig eth0 192.168.10.230 netmask 255.255.255.0 up
        route add default gw 192.168.10.184
        route del -net 192.168.10.0/24
        route del default gw 192.168.10.1

2. DIRECT ROUTE mode
    loadbalancer configure:
        ifconfig eth0 192.168.10.184 netmask 255.255.255.0 up
        ifconfig eth0:0 192.168.10.177 broadcast 192.168.10.177 netmask 255.255.255.255 up
        route add -host 192.168.10.177 dev eth0:0
        echo 0 > /proc/sys/net/ipv4/ip_forward
        echo 1 > /proc/sys/net/ipv4/conf/all/send_redirects
        echo 1 > /proc/sys/net/ipv4/conf/default/send_redirects
        echo 1 > /proc/sys/net/ipv4/conf/eth0/send_redirects
        ipvsadm -A -t 192.168.10.177:7777 -s rr
        ipvsadm -a -t 192.168.10.177:7777 -r 192.168.10.230:7777 -g

    real server configure:
        ifconfig eth0 192.168.10.230 netmask 255.255.255.0 up
        ifconfig lo:0 192.168.10.177 broadcast 192.168.10.177 netmask 255.255.255.255 up
        route add -host 192.168.10.177 dev lo:0
        echo 0 > /proc/sys/net/ipv4/ip_forward
        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

3. TUNNEL mode
    loadbalancer configure:
        ifconfig eth0 192.168.10.184 netmask 255.255.255.0 up
        ifconfig eth0:0 192.168.10.177 netmask 255.255.255.255 broadcast 192.168.10.177 up
        echo 1 > /proc/sys/net/ipv4/ip_forward
        ipvsadm -A -t 192.168.10.177:7777 -s rr
        ipvsadm -a -t 192.168.10.177:7777 -r 192.168.10.230:7777 -i

    real server configure:
        ifconfig eth0 192.168.10.230 netmask 255.255.255.0 up
        route add -net 192.168.10.0 netmask 255.255.255.0 dev eth0
        ifconfig tunl0 192.168.10.177 netmask 255.255.255.255 broadcast 192.168.10.177 up
        route add -host 192.168.10.177 dev tunl0
        echo 1 > /proc/sys/net/ipv4/ip_forward
        echo 1 > /proc/sys/net/ipv4/conf/all/send_redirects
        echo 1 > /proc/sys/net/ipv4/conf/lo/send_redirects
        echo 1 > /proc/sys/net/ipv4/conf/default/send_redirects
        echo 1 > /proc/sys/net/ipv4/conf/eth0/send_redirects