nginx虚拟主机
基于域名，基于端口，基于IP

基于域名
server {
listen 80;
server_name www.a.com; //域名1

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root html;
index index.html index.htm;
}
}

server {
listen 80;
server_name www.b.com; //域名2

location / {
root web;
index index.html index.htm;
}
}

server {
listen 80 default; //默认站点

location / {
root /default;
index index.html index.htm;
}
}

基于端口：
server {
listen 8080; //端口1
server_name www.a.com;
#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root html;
index index.html index.htm;
}
}

server {
listen 8081; //端口2
server_name www.b.com;
location / {
root web;
index index.html index.htm;
}
}

基于IP：
server {
listen 192.168.1.100：80; //IP1
server_name www.a.com;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root html;
index index.html index.htm;
}
}

server {
listen 192.168.1.200：80; //IP2
server_name www.b.com;
location / {
root web;
index index.html index.htm;
}
}

[root@service nginx]# mkdir web
[root@service nginx]# echo "www.b.com" > web/ index.html
[root@service nginx]# echo "www.a.com" > html/ index.html