Nginx common log splitting methods nginx apache nginx php nginx rewrite

方式一：
nginx cronolog日志分割配置文档，根据下面方法，每分钟分割一次NGINX访问日志。

<span>1</span>.nginx日志配置
 access_log access_log /data/access_log_pipe main;
<span>2</span>.先创建一个命名管道
mkfifo /www/<span>log</span>/access_log_pipe
<span>3</span>.配置cronolog：
nohup cat /data/access_log_pipe | <span>/usr/local</span><span>/sbin/cronolog</span> /data/<span>log</span>/domain.access<span>_</span><span>%Y</span><span>%m</span><span>%d</span><span>%H</span><span>%M</span>.<span>log</span> &
<span>4</span>.启动Nginx
/usr/<span>local</span>/nginx/sbin/nginx

注意：
cronolog必须在nginx启动前启动
没有安装cronolog的话，需要先安装
wget http:<span>//cronolog</span>.org/download/cronolog-<span>1.6</span>.<span>2</span>.tar.gz
tar zxvf cronolog-<span>1.6</span>.<span>2</span>.tar.gz
cd cronolog-<span>1.6</span>.<span>2</span>
.<span>/configure
 make
make install
方式二：

定时任务中每小时添加定时任务，执行一下脚本，可以实现小时日志分割
log_dir="/var</span><span>/log/nginx</span><span>"
date_dir=`date +<span>%Y</span>/<span>%m</span>/<span>%d</span>/<span>%H</span>`
/bin/mkdir -p <span>${log_dir}</span>/<span>${date_dir}</span> > /dev/null 2>&1
/bin/mv <span>${log_dir}</span>/access.log   <span>${log_dir}</span>/<span>${date_dir}</span>/access.log
kill -USR1 `cat /opt/nginx/logs/nginx.pid`

方式三：
使用logrotate做nginx日志轮询
logrotate看名字就知道是专门做日志轮询的，只把任务配置放在/etc/logrotate.d/下，任务就会自动完成，而且无需安装，系统自带，比较推荐使用.
vi /etc/logrotate.d/nginx  

    /usr/local/nginx/logs/www.willko.cn.log /usr/local/nginx/logs/nginx_error.log {
    notifempty
    daily
    sharedscripts
    postrotate
    /bin/kill -USR1 `/bin/cat /usr/local/nginx/nginx.pid`
    endscript
    } 

多个日志以空格分开，
notifempty 如果日志为空则不做轮询
daily 每天执行一次
postrotate 日志轮询后执行的脚本
这样，每天都会自动轮询，生成nginx.log.1-n
 后话：

用Jmeter对方法一进行了测试，新建线程组：线程数200，循环150，新建http请求，请求nginx上的图片，请求30000次，失败326次，后台形成5个文件，行数如下：

   2868 access_201112182030.log
   7777 access_201112182031.log
   7626 access_201112182032.log
   7873 access_201112182033.log
   3530 access_201112182034.log
  29674 total

并没有因为切分文件而丢失日志。</span>

The above introduces the common log splitting methods of Nginx, including nginx content. I hope it will be helpful to friends who are interested in PHP tutorials.