需求：实现当 www.aa.com域名进来时，跳转到www.bb.com域名进行访问

1.实现301域名跳转

server

{
listen 80;
server_name www.bb.com www.aa.com;

if ($host != ‘www.bb.com’)
{
rewrite ^/(.*)$ http://www.bb.com/$1 permanent;
}
index index.html index.htm index.php;
root /usr/local/nginx/html;
}

2.实现302跳转premanent 改为redirect

server

{
listen 80;
server_name www.bb.com www.aa.com;

if ($host != ‘www.bb.com’)
{
rewrite ^/(.*)$ http://www.bb.com/$1 redirect;
}
index index.html index.htm index.php;
root /usr/local/nginx/html;
}

3.检查错误和重启服务

检查是否有错：/usr/local/nginx/sbin/nginx -t
重启服务 ： service nginx restart
或者
/etc/init.d/nginx reload重新载入配置文件