LVS-DR Configuration

Arp_ignore: the response level when an ARP request is received

Level 0 (default): responds as long as the local configuration has a corresponding address

Level 1: responds only when the target address of the request is configured on the interface to which the request arrives.

Configuration method: Echo 1>/proc/sys/NET/IPv4/CONF/eth0/arp_ignore

Arp_announce: defines the level of announcement when an address is advertised.

Level 0 (default): advertise any address on the local Interface

Level 1: an attempt is made to only notify the target network of the address that matches the network.

Level 2: Only networks that match the addresses on the local interface are advertised.

Configuration method: Echo 2>/proc/sys/NET/IPv4/CONF/eth0/arp_announce

Planning: Director: VIP: 172.16.168.200 dip: 172.16.168.10

Realserver1: Rip: 172.16.168.20

Realserver2: Rip: 172.16.168.30

Diretor

Configure the network adapter eth0: ifconfig eth0 172.16.168.10

Eth0: 0: ifconfig eth0: 0 172.16.168.200 up

Configure a special route: Route add-host 172.16.168.200 Dev eth0: 0

Ipvsadm configuration: ipvsadm-a-t 172.16.168.200: 80-s rr

Ipvsadm-a-t 172.16.168.200: 80-r 172.16.168.20-G

Ipvsadm-a-t 172.16.168.200: 80-r 172.16.168.30-G

RealServer

Adjust/proc response parameters: Echo "1">/proc/sys/NET/IPv4/CONF/All/arp_ignore

Echo "2">/proc/sys/NET/IPv4/CONF/All/arp_announce

Echo "1">/proc/sys/NET/IPv4/CONF/eth0/arp_ignore

Echo "2">/proc/sys/NET/IPv4/CONF/eth0/arp_announce

Configure the network adapter eth0: ifconfig eth0 172.16.168.20

Lo: 0: ifconfig lo: 0 172.16.168.200 broadcast 172.16.168.200 netmask fixed 255.255.255 up (so that Lo: 0 is only in the same network as itself)

Configure a special route: Route add-host 172.16.168.200 Dev lo: 0 (to make the destination address lo: 0 and use the Lo: 0 address as the source address in the response, otherwise, the eth0 address will be used as the source address)

LVS-DR Configuration