Nginx Lua_nginx+graphicsmagick Real-time Thumbnail example

1. Installation GraphicsMagick

Cd/usr/local/src

wget http://sourceforge.net/projects/graphicsmagick/files/graphicsmagick/1.3.20/GraphicsMagick-1.3.20.tar.gz/download

TAR-ZXVF graphicsmagick-1.3.20.tar.gz

CD GraphicsMagick-1.3.20

./configure--prefix=/usr/local/graphicsmagick

Make && make install

2, download Luajit

wget http://luajit.org/download/LuaJIT-2.0.2.tar.gz

TAR-ZXVF luajit-2.0.2.tar.gz

CD LuaJIT-2.0.2

Make && make install Prefix=/usr/local/lj2

LN-SF Luajit-2.0.2/usr/local/lj2/bin/luajit

3. Download Ngx_devel_kit Module

wget Https://github.com/simpl/ngx_devel_kit/archive/master.zip Unzip Master.zip
4. Download Lua-nginx-module Module
Https://github.com/openresty/lua-nginx-module/archive/master.zip Unzip Master.zip

5. Download echo

Https://github.com/agentzh/echo-nginx-module/zipball/master Unzip Echo-nginx-module.zip

6. Download Cache

wget http://labs.frickle.com/files/ngx_cache_purge-2.1.tar.gz

TAR-ZXVF ngx_cache_purge-2.1.tar.gz

CD ngx_cache_purge-2.1

...

7, download Nginx

Wget http://nginx.org/download/nginx-1.7.5.tar.gz ...

8. Set environment variable

Export Luajit_lib=/usr/local/lj2/lib

Export luajit_inc=/usr/local/lj2/include/luajit-2.0

Export ld_library_path=/usr/local/lib/: $LD _library_path

Export Pkg_config_path=/usr/local/lib/pkgconfig: $PKG _config_path

Gm_home=/usr/local/graphicsmagick;

Path= $GM _home/bin: $PATH;

Export PATH

Export Gm_home

Source/etc/profile

9, Nginx compile installation

--prefix=/usr/local/nginx--with-http_stub_status_module--add-module=/usr/src/simpl-ngx_devel_kit--with-ld-opt= -wl,-rpath,/usr/local/lj2/lib--add-module=/usr/src/ngx_cache_purge-2.1--with-http_perl_module--add-module=/usr /local/src/lua-nginx-module--add-module=/usr/local/src/echo-nginx-module-master

If the compilation is wrong, please attach the pcre extension

10, Nginx Configuration

11, virtual directory Vhost

server {

Listen 80;

server_name image.host.com;

Root/usr/local/nginx/html/test;

Index index.html index.htm index.php;

LOCATION/LUA1 {

Default_type ' Text/plain ';

Content_by_lua ' Ngx.say ("Hello, lua") ';

}

Location/image {

Set $image _root/usr/local/nginx/html/test;

Set $file "$image _root$uri";

if (!-f $file) {

Rewrite_by_lua '

Local index = String.find (Ngx.var.uri, "([0-9]+) x ([0-9]+)");

if (index = = nil) Then

Ngx.exit (404);

Local Originaluri = string.sub (Ngx.var.uri, 0, index-2);

Local area = String.sub (Ngx.var.uri, index);

index = string.find (area, "([.])");

Area = string.sub (area, 0, index-1);

Local image_sizes = {"160x160", "400x300"};

Local Image_big = {"80x60^", "120x90^", "160x120^"};

function table.contains (table, Element)

For _, value in pairs (table) do

if value = = Element Then

return True

End

End

return False

End

# Print (Table.contains (image_big, area))

If Table.contains (Image_big, area) then

Local command = "/usr/local/graphicsmagick/bin/gm convert".  Ngx.var.image_root.. Originaluri.. "-thumbnail". Area.. "-background gray-gravity center-extent". Area.. " " .. Ngx.var.image_root.. Ngx.var.uri

Os.execute (command);

Else

If Table.contains (image_sizes, area) then

Local command = "/usr/local/graphicsmagick/bin/gm convert".  Ngx.var.image_root.. Originaluri.. "-thumbnail". Area.. " " .. Ngx.var.image_root.. Ngx.var.uri;

Os.execute (command);

Else

Ngx.exit (404);

End

End

';

}

# alias/usr/local/nginx/html/test/image;

Expires 7d;

}

}

12. Give permission

chmod o+w/usr/local/nginx/html/test/image

13, visit

Original address: Yun_qi_img/2.jpg

Thumbnail Address: yun_qi_img/2.jpg.400x300.jpg

Error

1

./configure--prefix=/usr/local/nginx--with-http_stub_status_module

--add-module=/usr/local/src/ngx_devel_kit-0.2.19--with-ld-opt=-wl,-rpath,/usr/local/lj2/lib

--add-module=/usr/local/src/ngx_cache_purge-2.1--with-http_perl_module

--add-module=/usr/local/src/lua-nginx-module-master

--add-module=/usr/local/src/openresty-echo-nginx-module-a736511

--with-pcre=/usr/local/src/pcre-8.35--with-zlib=/usr/local/src/zlib-1.2.8

--with-openssl=/usr/local/openssl

Make

Make install