Nginx安装配置Lua支持

文章博客转载自：https://blog.csdn.net/qq_31725371/article/details/85226116

Nginx安装配置Lua支持

• • • 1. 环境准备
    • 2. 下载最新的`luajit`和`ngx_devel_kit`以及`lua-nginx-module`解压
    • 3. 解压`ngx_devel_kit`以及`lua-nginx-module`
    • 4. 编译安装`LuaJIT`，即`Lua`及时编译器
    • 5. 编译安装`Nginx`
    • 6. 测试安装Lua成功

• 默认情况下Nginx不支持Lua模块，需要安装LuaJIT解释器，并且重新编译Nginx，或者可使用国人开发的openrestry
• 需要的模块：LuaJIT,Ngx_devel和lua-nginx-module
• Luajit官网：https://luajit.org

1. 环境准备

[root@nginx_lua ~]# yum install -y gcc gcc-c++ make pcre-devel zlib-devel openssl-devel

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2. 下载最新的luajit和ngx_devel_kit以及lua-nginx-module解压

[root@nginx_lua ~]# mkdir -p /soft/src 
[root@nginx_lua ~]# cd /soft/src/
wget https://luajit.org/download/LuaJIT-2.0.4.tar.gz
wget https://github.com/simpl/ngx_devel_kit/archive/v0.2.19.tar.gz
wget https://github.com/openresty/lua-nginx-module/archive/v0.10.13.tar.gz

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3. 解压ngx_devel_kit以及lua-nginx-module

[root@nginx_lua src]# tar xf v0.2.19.tar.gz
[root@nginx_lua src]# tar xf v0.10.13.tar.gz

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4. 编译安装LuaJIT，即Lua及时编译器

[root@nginx_lua src]# tar xf LuaJIT-2.0.4.tar.gz
[root@nginx_lua src]# cd LuaJIT-2.0.4/
[root@nginx_lua LuaJIT-2.0.4]# make && make install

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5. 编译安装Nginx

[root@nginx_lua src]# wget http://nginx.org/download/nginx-1.14.2.tar.gz
[root@nginx_lua src]# tar xf nginx-1.14.2.tar.gz
[root@nginx_lua src]# cd nginx-1.14.2
[root@nginx_lua nginx-1.14.2]# ./configure --prefix=/soft/nginx --with-http_ssl_module --with-http_stub_status_module --with-http_dav_module --with-file-aio --with-http_dav_module --add-module=../ngx_devel_kit-0.2.19/ --add-module=../lua-nginx-module-0.10.13/
[root@nginx_lua nginx-1.14.2]# make && make install
[root@nginx_lua nginx-1.14.2]# ln -s /soft/nginx/sbin/nginx /usr/bin/nginx
[root@nginx_lua conf]# vim nginx.conf  #简单配置写nginx测试Nginx是否已经支持Lua(lua指令方式)
...
server {
 location /test_lua {
                default_type text/html;
                content_by_lua_block {
                        ngx.say("Hello Lua!") 
                }
        }
...
}

#lua指令方式

#在server 中添加一个localtion

location /hello {

            default_type 'text/plain';

            content_by_lua 'ngx.say("hello, lua")';

        }

#lua文件方式

#在server 中添加一个localtion

location /lua {

    default_type 'text/html';

    content_by_lua_file conf/lua/test.lua; #相对于nginx安装目录

}

#test.lua文件内容
ngx.say("hello world");

//建立软连接，如果不建立软链接，则会出现share object错误
[root@nginx_lua conf]# nginx -t
/soft/nginx/sbin/nginx: error while loading shared libraries: libluajit-5.1.so.2: cannot open shared object file: No such file or directory
[root@nginx_lua conf]# 

[root@nginx_lua lib64]# ln -s /usr/local/lib/libluajit-5.1.so.2 /lib64/libluajit-5.1.so.2
[root@nginx_lua lib64]# ll libluajit-5.1.so.2
lrwxrwxrwx 1 root root 33 Dec 21 20:52 libluajit-5.1.so.2 -> /usr/local/lib/libluajit-5.1.so.2
[root@nginx_lua lib64]#

#//加载lua库，加入到ld.so.conf文件（暂时不执行这一步）
#[root@nginx_lua nginx-1.14.2]# echo "/usr/local/LuaJIT/lib" >> /etc/ld.so.conf

[root@nginx_lua conf]# nginx -t
nginx: the configuration file /soft/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /soft/nginx/conf/nginx.conf test is successful
[root@nginx_lua conf]# nginx -s reload

 

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6. 测试安装Lua成功

这里我们可以直接下载window版本的

 我们可以进行验证下，我们对nginx的配置如下

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    
    #lua_package_path "$prefix/?.luac;$prefix/?.lua;;";

    #gzip  on;
    
    lua_package_path "F:Openresty_For_Windows_1.13.5.1001_64Bitskywalking-nginx-lualib?.lua;;";
    # Buffer represents the register inform and the queue of the finished segment
    lua_shared_dict tracing_buffer 100m;

    # Init is the timer setter and keeper
    # Setup an infinite loop timer to do register and trace report.
    init_worker_by_lua_block {
        local metadata_buffer = ngx.shared.tracing_buffer

        metadata_buffer:set('serviceName', 'wy nginx')
        -- Instance means the number of Nginx deloyment, does not mean the worker instances
        metadata_buffer:set('serviceInstanceName', 'User Service Instance Name')
        -- type 'boolean', mark the entrySpan include host/domain
        metadata_buffer:set('includeHostInEntrySpan', false)

        -- set randomseed
        require("skywalking.util").set_randomseed()

        require("skywalking.client"):startBackendTimer("http://127.0.0.1:8080")

        -- Any time you want to stop reporting metrics, call `destroyBackendTimer`
        -- require("skywalking.client"):destroyBackendTimer()

        -- If there is a bug of this `tablepool` implementation, we can
        -- disable it in this way
        -- require("skywalking.util").disable_tablepool()

        skywalking_tracer = require("skywalking.tracer")
    }


       server {
        listen 8787;
        location /hello2 {

            default_type 'text/plain';

            content_by_lua 'ngx.say("hello, lua")';
        }
        
    }
     
     server {
        listen 8888;
        location /test {
            default_type text/html;

            rewrite_by_lua_block {
                require("tracer"):start("upstream service")
            }
            # 这里则是 上图中 nginx 上游服务的地址
            proxy_pass http://127.0.0.1:7777/hello;
            body_filter_by_lua_block {
                if ngx.arg[2] then
                    require("tracer"):finish()
                end
            }
            log_by_lua_block {
                require("tracer"):prepareForReport()
            }
        }
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

这里我们启动nginx，访问

 这样说明我们的nginx就安装成功并且集成的lua模块就已经ok了

nginx集成了lua模块，如果lua模块在nginx中安装成功，在安装目录中的下面会存在一个lua的模块

 上面我们直接验证了，接下来我们验证下nginx支持文件的lua

默认情况下，我们编写的lua文件默认放在lua目录下

#test.lua文件内容
ngx.say("hello world");

我们在nginx中使用也可以使用直接路径的形式

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    
    #lua_package_path "$prefix/?.luac;$prefix/?.lua;;";

    #gzip  on;
    
    lua_package_path "F:Openresty_For_Windows_1.13.5.1001_64Bitskywalking-nginx-lualib?.lua;;";
    # Buffer represents the register inform and the queue of the finished segment
    lua_shared_dict tracing_buffer 100m;

    # Init is the timer setter and keeper
    # Setup an infinite loop timer to do register and trace report.
    init_worker_by_lua_block {
        local metadata_buffer = ngx.shared.tracing_buffer

        metadata_buffer:set('serviceName', 'wy nginx')
        -- Instance means the number of Nginx deloyment, does not mean the worker instances
        metadata_buffer:set('serviceInstanceName', 'User Service Instance Name')
        -- type 'boolean', mark the entrySpan include host/domain
        metadata_buffer:set('includeHostInEntrySpan', false)

        -- set randomseed
        require("skywalking.util").set_randomseed()

        require("skywalking.client"):startBackendTimer("http://127.0.0.1:8080")

        -- Any time you want to stop reporting metrics, call `destroyBackendTimer`
        -- require("skywalking.client"):destroyBackendTimer()

        -- If there is a bug of this `tablepool` implementation, we can
        -- disable it in this way
        -- require("skywalking.util").disable_tablepool()

        skywalking_tracer = require("skywalking.tracer")
    }


       server {
        listen 8787;
        location /hello2 {

            default_type 'text/plain';

            content_by_lua 'ngx.say("hello, lua")';
        }
        
    }
    
    
       server {
        listen 8777;
        location /hello2 {

            default_type 'text/plain';

           rewrite_by_lua_file F:/Openresty_For_Windows_1.13.5.1001_64Bit/x64/nginx/test.lua;
        }
        
    }
     
     server {
        listen 8888;
        location /test {
            default_type text/html;

            rewrite_by_lua_block {
                require("tracer"):start("upstream service")
            }
            # 这里则是 上图中 nginx 上游服务的地址
            proxy_pass http://127.0.0.1:7777/hello;
            body_filter_by_lua_block {
                if ngx.arg[2] then
                    require("tracer"):finish()
                end
            }
            log_by_lua_block {
                require("tracer"):prepareForReport()
            }
        }
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

这里nginx是安装在中文的目录下：中文的路径一定要使用/，不能写成下面的路径否则会出现错误F:Openresty_For_Windows_1.13.5.1001_64Bitx64 ginxlua

出现错误可以进入到nginx的error.log中查看日志

rewrite_by_lua_file F:/Openresty_For_Windows_1.13.5.1001_64Bit/x64/nginx/test.lua;

在linux安装环境中，如果出现错误一定要看下nginx启动的用户和用户名，是否能够有权限访问创建lua的权限，否则会出现问题

test.lua内容如下

ngx.say("hello world222222");

我们访问页面上面输出的内容如下

 接下来我们来看skywalking如何支持对nginx的对接