doc

 1 tar zxvf ngx_openresty-1.7.0.1.tar.gz
 2 cd ngx_openresty-1.7.0.1
 3 ./configure --prefix=/usr/local/openresty/ --with-http_stub_status_module --add-module=/usr/local/nginx_upload_module-2.2.0 --with-luajit
 4 make
 5 mv /usr/local/openresty/nginx/sbin/nginx /usr/local/openresty/nginx/sbin/nginx.old
 6 cp /usr/local/openresty-1.9.7.5/nginx/sbin/nginx .
 7 
 8 
 9 执行：./nginx -t
10 
11 nginx: the configuration file /home/app/openresty/nginx/conf/nginx.conf syntax is ok
12 
13 nginx: configuration file /home/app/openresty/nginx/conf/nginx.conf test is successful
14 
15 测试成功
16 
17 
18 
19 启动新的进程，关掉旧的
20 让nginx把nginx.pid改成nginx.pid.oldbin 跟着启动新的nginx
21 # kill -USR2 `cat /home/app/openresty/nginx/nginx.pid`
22 退出旧的nignx
23 # kill -QUIT `cat /home/app/openresty/nginx/nginx.pid.oldbin`
24 
25 #升级完成

openrestry安装问题：

http://openresty.org/#Installation

下载openrestry安装包, 解压后执行如下命令安装

sudo apt-get install libreadline-dev libncurses5-dev libpcre3-dev libssl-dev perl make

$ ./configure --with-luajit
如果报下面的错误

platform: linux (linux)
    you need to have ldconfig in your PATH env when enabling luajit.
是因为找不到命令ldconfig, 这个命令一般是在/sbin/目录下的，所以先执行

export PATH=$PATH:/sbin
然后再执行

make
sudo make install