How to add lua module to Nginx

Install lua

wget http://luajit.org/download/luajit-2.0.5.tar.gz 
tar -zxvf luajit-2.0.5.tar.gz
cd luajit-2.0.5
make && make install prefix=/usr/local/luajit

etc/profile join

# lua
export luajit_lib=/usr/local/luajit/lib 
export luajit_inc=/usr/local/luajit/include/luajit-2.0

source etc/profile

Download the ngx_devel_kit module

wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz

ndk (nginx development kit) module is a module that expands the core functions of the nginx server. Third-party module development can be quickly implemented based on it. ndk provides functions and macros to handle some basic tasks, reducing the amount of code for third-party module development

Download lua-nginx-module module

wget https://github.com/openresty/lua-nginx-module/archive/v0.10.9rc7.tar.gz

lua-nginx- The module module enables nginx to run lua directly

View the original compilation

nginx -v

For example:
configure arguments: --user=www --group =www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-http_sub_module --with-http_v2_module

Enter nginx original directory ：

./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-http_sub_module --with-http_v2_module --add-module=/root/lua-nginx-module-0.10.9rc7/ --add-module=/root/ngx_devel_kit-0.3.0

Only make, do not execute make install.

The compilation error should be that the lua environment variable is incorrect.

nginx -v 命令报错
./nginx: error while loading shared libraries: libluajit-5.1.so.2: cannot open shared object file: no such file or directory

解决：
echo "/usr/local/luajit/lib" >> /etc/ld.so.conf

ldconfig

After success, you can check it with nginx -v, and no error will be reported.

Back up the original nginx as nginx_old

cp objs/nginx to the original nginx and overwrite it.

Execute in the compilation directory

make upgrade

nginx Add lua module

Test:

server{
 ...
 location /lua {
  default_type 'text/html';
  content_by_lua '
    ngx.say("hello, lua!")
  ';
 }
 ...
}

Open browser:

http://blog.13sai.com/lua

You can see hello, lua!

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