光速搭lvs + keepalived + nginx

环境：

 

VIP         192.168.2.224

LVS        192.168.2.217     centos7

nginx1    192.168.2.231     centos6

nginx2    192.168.2.194     centos6

 

LVS原理：

国内的看得懂，哈哈  http://www.linuxvirtualserver.org/zh/lvs1.html

 

一、LVS节点需做的

 

1、安装ipvsadm，keepalived

yum -y install keepalived ipvsadm
yum install net-tools

 

2、修改配置keepalived的配置文件

global_defs {
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface eno16777736
    virtual_router_id
    priority
    advert_int
    authentication {
        auth_type PASS
        auth_pass
    }
    virtual_ipaddress {
        192.168.2.224
    }
}

virtual_server 192.168.2.231  {
    delay_loop
    lb_algo rr
    lb_kind NAT
    protocol TCP

    real_server 192.168.2.194  {
        weight
        SSL_GET {
            connect_timeout
            nb_get_retry
            delay_before_retry
        }
    }

    real_server 192.168.2.231  {
        weight
        SSL_GET {
            connect_timeout
            nb_get_retry
            delay_before_retry
        }
    }
}

 

3、启动keepalived

systemctl start keepalived

 

4、执行下面这个脚本

#!/bin/bash
VIP=192.168.2.224
RIP1=192.168.2.231
RIP2=192.168.2.194
case "$1" in
start)
        ipvsadm --save > /etc/sysconfig/ipvsadm
        systemctl start ipvsadm
        ifconfig eno16777736: $VIP broadcast $VIP netmask 255.255.255.255 broadcast $VIP up
        route add -host $VIP dev eno16777736:
        ipvsadm -A -t $VIP: -s rr
        ipvsadm -a -t $VIP: -r $RIP1: -g
        ipvsadm -a -t $VIP: -r $RIP2: -g
        echo "ipvsadm starting --------------------[ok]"
        ;;
stop)
        ipvsadm -C
        systemctl stop ipvsadm
        ifconfig eno16777736: down
        route del $VIP
        echo "ipvsamd stoped----------------------[ok]"
         ;;
status)
        if [ ! -e /var/lock/subsys/ipvsadm ];then
        echo "ipvsadm stoped---------------"
        exit
                else
                echo "ipvsamd Runing ---------[ok]"
        fi
        ;;
*)

echo "Usage: $0 {start|stop|status}"
exit
esac
exit 

 

二、web节点需做的

 

1、先在两台nginx上把nginx装好，通过本机IP访问能区别两台机器，方便后面的测试，我这的nginx直接用的yum安装

 

 

 

 

2、分别在两台机器上执行如下脚本

 

#!/bin/bash
VIP=192.168.2.224

case "$1" in
    start)
        ifconfig lo: $VIP netmask 255.255.255.255 broadcast $VIP
        /sbin/route add -host $VIP dev lo:
        echo "" >/proc/sys/net/ipv4/conf/lo/arp_ignore
        echo "" >/proc/sys/net/ipv4/conf/lo/arp_announce
        echo "" >/proc/sys/net/ipv4/conf/all/arp_ignore
        echo "" >/proc/sys/net/ipv4/conf/all/arp_announce
        sysctl -p >/dev/null >&
        echo "RealServer Start OK "
        ;;
    stop)
        ifconfig lo: down
        route del $VIP /dev/null >&
        echo "" >/proc/sys/net/ipv4/conf/lo/arp_ignore
        echo "" >/proc/sys/net/ipv4/conf/lo/arp_announce
        echo "" >/proc/sys/net/ipv4/conf/all/arp_ignore
        echo "" >/proc/sys/net/ipv4/conf/all/arp_announce
        echo "RealServer Stopd"
        ;;
    *)
        echo "Usage: $0 {start|stop}"
        exit
esac

exit 

 

三、测试

 

这里的测试要在非lvs，nginx机器上测试，也就是与这些无关的机器上测试

 

 

 

 注：参考网上各路大哥的，但是还是有很多问题，我这个绝对的可以。