About Nginx commonly used official modules-PHP Tutorial-php.cn

About Nginx commonly used official modules

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Release： 2023-04-03 07:30:01

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This article mainly introduces the commonly used official modules of Nginx, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

Nginx commonly used official modules

Nginx采用模块化的架构，Nginx中大部分功能都是通过模块方式提供的，比如HTTP模块、Mail模块等。

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Nginx official module documentation

1. ngx_http_stub_status_module

Compilation options

--with-http_stub_status_module

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Function

Provide Nginx Currently processing access to basic status information such as connections

Syntax

Syntax:        stub_status;
Default:    —
Context:    server, location

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Usage

In nginx Configuration under server in the configuration file

server {
    # 添加的配置
    location /nginx_status {
        stub_status;
    }
    
    ...其它代码省略...
}

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Reload the configuration file after modificationnginx -s reload
Accesshttp://<ip>/nginx_status in the browser, the following content will be returned

Active connections: 3 
server accepts handled requests
 7 7 16 
Reading: 0 Writing: 1 Waiting: 2

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Active connections: Nginx’s current number of active connections
accepts: The total number of client connections received
handled: The total number of client connections processed. Generally speaking, this parameter value is the same as accepts, unless some resource limit has been reached (such as worker_connections limit)
requests: The total number of client requests
Reading : The number of connections for which nginx is currently reading request headers
Writing: The number of connections for which nginx is currently writing responses
Reading: The number of idle clients currently waiting for requests Number of connections. It usually occurs when nginx turns on long connections (keep alive).

2. ngx_http_random_index_module

Compile options

--with-http_random_index_module

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Function

Select a random number in the home directory File as homepage

Syntax

Syntax:        random_index on | off;
Default:    random_index off;
Context:    location

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Usage

Under server in nginx configuration file Configuration

server {
    location / {
        root /usr/share/nginx/html;
        #添加这一行开启随机主页模块
        random_index on;
        #把指定的主页注释掉
        #index index.html index.htm;
    }
    
    ...其它代码省略...
}

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3. ngx_http_sub_module

Compilation options

--with-ngx_http_sub_module

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Function

Modify the response by replacing a specified string

Syntax

Specify the replaced characters and replacement characters

Syntax:    sub_filter string replacement;
Default:   —
Context:    http, server, location

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Last-Modified, use To verify whether the server content has changed, it is mainly used in caching scenarios

Syntax:       sub_filter_last_modified on | off;
Default:   sub_filter_last_modified off;
Context:    http, server, location

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By default, only the first string found is replaced. If all matching strings in the text are replaced, it is set to off

Syntax:       sub_filter_once on | off;
Default:    sub_filter_once on;
Context:    http, server, location

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In addition to "text/html", you can also replace strings with specified MIME types. The special value '*' matches any MIME type

Syntax:       sub_filter_types mime-type ...;
Default:    sub_filter_types text/html;
Context:    http, server, location

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Usage

Configure under server in the nginx configuration file

server {
    location / {
        root   /usr/share/nginx/html;
        index  index.html;
        # 将首页的nginx替换为home
        sub_filter 'nginx' 'home';
        # 不止替换第一个，而是替换response中所有的nginx
        sub_filter_once off;
    }
    
    ...其它代码省略...
}

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Reload the configuration file after modificationnginx -s reload
curl localhost , return the following content, you will find that all nginx in the response has been replaced by home

[vagrant/etc/nginx]$ curl localhost
<!DOCTYPE html>
<html>
<head>
<title>Welcome to home!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to home!</h1>
<p>If you see this page, the home web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://home.org/">home.org</a>.<br/>
Commercial support is available at
<a href="http://home.com/">home.com</a>.</p>

<p><em>Thank you for using home.</em></p>
</body>
</html>

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