lvs之NAT模式配置

一、环境说明

主机名	IP	系统	IP类型	角色
s1	192.168.80.128	CentOS 7	DIP	Director
s1	192.168.0.133	CentOS 7	VIP	Director
s2	192.168.80.129	CentOS 7	RIP	Real Server
s3	192.168.80.130	CentOS 7	RIP	Real Server

二、环境准备

1. Director

$ yum install -y ipvsadm

# 开启ipv4转发
$ echo 1 > /proc/sys/net/ipv4/ip_forward

2. Real Server

$ yum install -y nginx
$ systemctl start nginx

# 将默认网关指向DIP
$ route del default
$ route add default gateway 192.168.80.128

3. s2

$ echo "<h1>s2 real sever</h1>" > /usr/share/nginx/html/index.html

4. s3

$ echo "<h1>s3 real server</h1>" > /usr/share/nginx/html/index.html

三、配置ipvs-nat

• director

$ ipvsadm -A -t 192.168.0.133:80 -s rr
$ ipvsadm -a -t 192.168.0.133:80 -r 192.168.80.129 -m
$ ipvsadm -a -t 192.168.0.133:80 -r 192.168.80.130 -m

四、结果

五、配置总结

1. DIP应该和RIP处于同一个网段
2. Real Server 默认网关应指向DIP
3. Director 应开启ipv4转发