lnmp安装wordpress后不带www的域名无法访问

在VPS上装了wordpress有一段时间了，今天才发现有个小问题：尼玛用www.prayerlaputa.com完整域名访问没问题，用不带www的域名访问就会访问到lnmp的index页面，搜了一下发现是nginx中配置域名重定向有问题，原本内容大致如下：

server
{
listen 80;
#listen [::]:80;
server_name www.prayerlaputa.com;
index index.html index.htm index.php default.html default.htm default.php;
root /home/wwwroot/www.prayerlaputa.com;
include wordpress.conf;
include other.conf;
#error_page 404 /404.html;
location ~ [^/]\.php(/|$)
{
# comment try_files $uri =404; to enable pathinfo
try_files $uri =404;
fastcgi_pass unix:/tmp/php-cgi.sock;
fastcgi_index index.php;
include fastcgi.conf;
#include pathinfo.conf;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}
location ~ .*\.(js|css)?$
{
expires 12h;
}
access_log /home/wwwlogs/www.prayerlaputa.com.log access;
}

我的问题主要出在server_name那一行，只写了一个www.prayerlaputa.com，导致不带www的域名解析不正常，为此我修改为

server_name www.prayerlaputa.com prayerlaputa.com;

之后，重启lnmp（lnmp restart），试了试，ok了。不过网上也有很多人并非这么配置的，如下文：VPS LNMP下带www与不带www的301重定向设置方法  贴出来给大家参考一下