LVS配置

layout: post
title: LVS配置
date: 2018-03-05
tags: [“Cluster services”,”软件服务”]

一、NAT配置

#! /bin/bash
ipvsadm -A -t 172.18.3.7:80 -s rr
ipvsadm -a -t 172.18.3.7:80 -r 192.168.27.17 -m 
ipvsadm -a -t 172.18.3.7:80 -r 192.168.27.27 -m

#!/bin/bash
vip='10.0.0.100'
iface='eth0:1'
port='80'
rs1='192.168.8.101'
rs2='192.168.8.102'
scheduler='wrr'
type='-g'
rpm -q ipvsadm &> /dev/null '' yum -y install ipvsadm &> /dev/null
 
case $1 in
start)
    ifconfig $iface $vip netmask #broadcast $vip up
    iptables -F
 
    ipvsadm -A -t ${vip}:${port} -s $scheduler
    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

rs配置

#!/bin/bash
vip=10.0.0.100
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!"
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
    ifconfig $dev $vip netmask $mask #broadcast $vip up
    #route add -host $vip dev $dev
    echo "The RS Server is Ready!"
    ;;
stop)
    ifconfig $dev 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: $(basename $0) start'stop"
    exit 1
    ;;
esac

注意：VS服务器必须配置路由，虽然从原理的角度上来看，VS服务器不配置网关也是可以收到数据包的，但是从网络的角度来看，如果其不配置路由其将会提示”no route to host”，从而也不会发arp广播，其也就无法将数据转发给realserver，所以VS服务器必须配置网关，任意网关即可。