CentOS7安装Nginx (包含日志记录功能)

末蓝、 2022-05-24 03:06 168阅读 0赞

\# Nginx lua

相关的安装包和安装文档可在https://download.csdn.net/download/cnzyyh/10424281 下载！

## 需求描述 ##

--------------------

在Nginx的日志里面获取请求数据,如果Nginx里使用了`proxy_pass`可以根据Nginx自带的`$request_body`获取.其他方式要借用`nginx-lua`的功能.

软件信息:

>  *  CentOS 7
>  *  Nginx 1.10.3

## 安装 ##

--------------------

### 1.安装依赖 ###

**如系统已存在下面依赖,请选择升级,而不是强制安装.**

使用`yum`安装依赖

yum -y install gcc gcc-c++ zlib zlib-devel openssl openssl-devel pcre pcre-devel

**不建议使用以下命令强制安装**

不能使用外网的情况,请预先下载相关依赖,使用`rpm`安装(测试环境)

rpm -ivh rpms/*.rpm --force

### 2. 安装`luajit` ###

[root@dev2 luajit]# wget -c http://luajit.org/download/LuaJIT-2.0.4.tar.gz
    
    [root@dev2 luajit]# tar -xvf LuaJIT-2.0.4.tar.gz 
    
    [root@dev2 luajit] cd LuaJIT-2.0.4
    
    [root@dev2 LuaJIT-2.0.4]# make install PREFIX=/usr/local/luajit

安装成功的相关提示

==== Successfully built LuaJIT 2.0.4 ==+
    ...... ==== Successfully installed LuaJIT 2.0.4 to /usr/local/luajit ====

添加系统环境变量

[root@dev2 LuaJIT-2.0.4]# vim /etc/profile
    
    # export for luajit
    export LUAJIT_LIB=/usr/local/luajit/lib
    export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0
    
    [root@dev2 LuaJIT-2.0.4]# source /etc/profile

### 3. 模块`ngx_devel_kit` ###

[root@dev2 ngx-devel-kit]# wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz
    
    [root@dev2 ngx-devel-kit]# tar -xzvf v0.3.0.tar.gz

### 4. 模块`lua-nginx-module` ###

[root@dev2 ngx-devel-kit]# wget https://github.com/openresty/lua-nginx-module/archive/v0.10.8.tar.gz
    
    [root@dev2 ngx-devel-kit]# tar -xzvf v0.10.8.tar.gz

### 5. 安装`Nginx` ###

[root@dev2 nginx]# wget http://nginx.org/download/nginx-1.10.3.tar.gz
    
    [root@dev2 nginx]# tar -xvf nginx-1.10.3.tar.gz 
    
    [root@dev2 nginx]# cd nginx-1.10.3/

修改`Nginx`源代码,解决`log`日志中文乱码问题 修改文件:`nginx-1.10.3/src/http/modules/ngx_http_log_module.c`

static uintptr_t
    ngx_http_log_escape(u_char *dst, u_char *src, size_t size)
    {
        ngx_uint_t      n;
        /* 修改这里 */
        /*static u_char   hex[] = "0123456789ABCDEF";*/
    
        static uint32_t   escape[] = {
            0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
    
                        /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
            0x00000004, /* 0000 0000 0000 0000  0000 0000 0000 0100 */
    
                        /* _^]\ [ZYX WVUT SRQP  ONML KJIH GFED CBA@ */
            0x10000000, /* 0001 0000 0000 0000  0000 0000 0000 0000 */
    
                        /*  ~}| {zyx wvut srqp  onml kjih gfed cba` */
            0x80000000, /* 1000 0000 0000 0000  0000 0000 0000 0000 */
    
            0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
            0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
            0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
            0xffffffff, /* 1111 1111 1111 1111  1111 1111 1111 1111 */
        };
    
        if (dst == NULL) {
            /* find the number of the characters to be escaped */
            n = 0;
            while (size) {
                if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
                    n++;
                }
                src++;
                size--;
            }
            return (uintptr_t) n;
        }
    
        /* 修改这里 */
        while (size) {
           /* if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
                *dst++ = '\\';
                *dst++ = 'x';
                *dst++ = hex[*src >> 4];
                *dst++ = hex[*src & 0xf];
                src++;
            } else {
                *dst++ = *src++;
            }*/
    	    *dst++=*src++;
            size--;
        }
        return (uintptr_t) dst;
    }

安装

[root@dev2 nginx-1.10.3]# ./configure --prefix=/usr/local/nginx --add-module=/home/dev/nginx/ngx-devel-kit/ngx_devel_kit-0.3.0 --add-module=/home/dev/nginx/lua-nginx-module/lua-nginx-module-0.10.8
    
    [root@dev2 nginx-1.10.3]# make -j2 
    
    [root@dev2 nginx-1.10.3]# make install

>  *  \--prefix 指定nginx安装路径
>  *  \--add-module 添加模块,以解压实际路径为准

## 使用 ##

--------------------

编辑`conf/nginx.conf`

#user nobody;
    worker_processes  1;
    error_log  logs/error.log;
    
    events {
        worker_connections  1024;
    }
    
    http {
        include       mime.types;
        default_type  application/octet-stream;
        log_format main '$request_body'; --> 主要
    
        sendfile        on;
    
        #keepalive_timeout 0;
        keepalive_timeout  65;
    
        #gzip on;
        lua_need_request_body on; --> 主要
        server {
            listen       80;
            server_name  10.10.2.101;
    	    charset utf-8; --> 设置编码
    
            location / {
                root   html;
                index  index.html index.htm;
            }
    	
        	location /hello { -->主要
        		default_type 'text/plain';
        		content_by_lua '
        			ngx.say("success")
        			ngx.req.read_body()
        		';
        		access_log logs/access.log main;
        	}
    }

使用`nginx -t`检查配置文件是否正确

出现异常:**sbin/nginx: error while loading shared libraries: libluajit-5.1.so.2: cannot open shared object file: No such file or directory**

解决方法

[root@dev2 nginx]# ln -s /usr/local/luajit/lib/libluajit-5.1.so.2 /lib64/libluajit-5.1.so.2

启动Nginx

[root@dev2 nginx]#sbin/nginx

浏览器访问

[![visit][]][visit]

## `Nginx`常用命令 ##

--------------------

停止Nginx: nginx -s stop 
    
    检查Nginx配置: nginx -t
    
    重新加载Nginx: nginx -s reload

[visit]: https://raw.githubusercontent.com/cs12110/docs/master/imgs/nginx-images/visit.png