wget http://tengine.taobao.org/download/tengine-1.5.1.tar.gz //下载Tengine1.5.1版本
tar zxvf tengine-1.5.1.tar.gz //解压到当前目录
cd tengine-1.5.1 //进入到目录
./configure //执行安装脚本
make //编译安装
mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx.old //备份nginx的配置文件，路径参考你自己的
cp -r objs/nginx /usr/local/nginx/sbin/nginx //复制Tengine文件到nginx下
#vi /usr/local/nginx/conf/nginx.conf //编辑nginx.conf，删除如下代码
#location /status {
#stub_status on;
#access_log off;
#}
kill -USR2 `cat /usr/local/nginx/logs/nginx.pid`
kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`
//结束nginx进程
/usr/local/nginx/sbin/nginx -v //查看nginx版本号
返回带有Tengine版本号等信息则升级成功！
/*
************************************
**卸载Tengine，换回Nginx
************************************
*/
rm -rf /usr/local/nginx/sbin/nginx //删除Tengine配置文件
mv /usr/local/nginx/sbin/nginx.lod /usr/local/nginx/sbin/nginx //恢复备份的nginx配置文件，路径参考你自己的
/etc/init.d/nginx restart //重启nginx
/usr/local/nginx/sbin/nginx -v //查看nginx版本号
返回带有Nginx版本号则卸载成功
实验如下：
[root@qike tengine-2.1.0]# kill -USR2 `cat /usr/local/nginx/logs/nginx.pid` // 平滑升级 会在/usr/local/nginx/logs/ 下生成了nginx.pid.oldbin （以前的nginx进程号） nginx.pid现在变为tengine的进程号.
[root@qike tengine-2.1.0]# cd /usr/local/nginx/logs/
[root@qike logs]# ls -lh
total 48K
-rw-r--r-- 1 root root 46 Jul 4 00:19 aa
-rw-r--r-- 1 root root 5.2K Jun 20 23:29 access.log
-rw-r--r-- 1 root root 17K Aug 2 20:49 error.log
-rw-r--r-- 1 root root 6 Aug 2 20:49 nginx.pid
-rw-r--r-- 1 root root 6 Jul 27 23:36 nginx.pid.oldbin
drwxr-xr-x 2 root root 4.0K Jul 6 14:53 old
-rw-r--r-- 1 root root 209 Jul 4 00:01 test
[root@qike logs]# cat /usr/local/nginx/logs/nginx.pid
31941
[root@qike logs]# cat /usr/local/nginx/logs/nginx.pid.oldbin
24372
[root@qike logs]# ps -ef |grep nginx
root 24372 1 0 Jul27 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 24373 24372 0 Jul27 ? 00:00:14 nginx: worker process
nobody 24374 24372 0 Jul27 ? 00:00:13 nginx: worker process
nobody 24375 24372 0 Jul27 ? 00:00:15 nginx: worker process
nobody 24376 24372 0 Jul27 ? 00:00:12 nginx: worker process
root 31941 24372 0 20:49 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 31942 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31943 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31944 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31945 31941 0 20:49 ? 00:00:00 nginx: worker process
root 32023 25663 0 20:50 pts/2 00:00:00 grep nginx
[root@qike logs]# kill -QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin` //kill -QUIT 旧进程号（老进程） 会把旧的进程和nginx.pid.oldbin 这个文件干掉
[root@qike logs]# ps -ef |grep nginx
root 31941 1 0 20:49 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody 31942 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31943 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31944 31941 0 20:49 ? 00:00:00 nginx: worker process
nobody 31945 31941 0 20:49 ? 00:00:00 nginx: worker process
root 32073 25663 0 20:51 pts/2 00:00:00 grep nginx
[root@qike logs]# nginx -v
Tengine version: Tengine/2.1.0 (nginx/1.6.2)