nginx 模組(8)

Nginx · 發表 2019-01-21 13:49:21

摘要：獲取全套nginx教程，請訪問瓦力部落格小菜簡單介紹nginx模組，模組太多，就不一一介紹。這裡是nginx的所有模組 http://nginx.org/en/docs/ {:target="_blank"}。在後面的操作中用到了 ab 壓力測試工具，不會的夥伴請...

獲取全套nginx教程，請訪問瓦力部落格

小菜簡單介紹nginx模組，模組太多，就不一一介紹。這裡是nginx的所有模組 http://nginx.org/en/docs/ {:target="_blank"}。在後面的操作中用到了 ab 壓力測試工具，不會的夥伴請檢視ab{:target="_blank"}這篇部落格

nginx模組在編譯的時候就作為選項被新增進去，檢視新增哪些模組

nginx -V

1.http_stub_status_module配置

syntax: stub_status;
default: -
contentx: server,location

下面小菜配置到自己walidream.com的域名下，展示一下做什麼用處的。根據語法知道配置在server,和location下，小菜就配置location下面

cd /etc/nginx/conf.d/

vim server1.conf

將這段程式碼新增到 location / 下面

location /mystatus {
stub_status;
}

然後在瀏覽器上輸入walidream.com/mystatus

ssl

Active connections: 2#連線數
server accepts handled requests
 94 94 86#總握手次數總連線數總請求數
Reading: 0 Writing: 1 Waiting: 1#讀的數寫的數等待的數

2.random_index_module

語法

syntax: random_index on|off;
default: random_index off;
context: location

隨機的獲取目錄下面字尾為 .html ，進入配置

location / {
root /var/share/nginx/html/server;
random_index on;
}

在/var/share/nginx/html/server目錄下新建1.html,2.html,3.html內容分別為

<!--這個是1.html內容 -->
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body style="background:red;">

</body>
</html>

<!--這個是2.html內容 -->

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body style="background:blue;">

</body>
</html>

<!--這個是3.html內容 -->

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body style="background:blank;">

</body>
</html>

然後在瀏覽器輸入 walidream.com,多按幾次f5重新整理看看:

3.http_sub_module

替換返回html的內容

1.sub_filter 作用是替換返回html的內容

syntax: sub_filter string replacement;
default: -
contentx: http,server,location

2.sub_filter_last_modified用來校驗服務端的html內容是否有更新，主要用於快取

syntax: sub_filter_last_modified on|off;
default: sub_filter_last_modified off;
context: http,server,location

3.sub_filter_once 只匹配第一個還是匹配所有

syntax: sub_filter_once on|off;
default: sub_filter_once on;
contentx: http,server,location;

4.sub_filter_types 替換的型別

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

除了 text/html 之外，還在具有指定MIME型別的響應中啟用字串替換。特殊值 * 匹配任何MIME型別。

示例配置

將返回內容中 Golang 字串替換成 Nginx ,只匹配一次。

location / {
root /opt/app/code;
index sub_module.html sub_module.htm;
sub_filter 'Golang' 'Nginx';
sub_filter_once on;
}

4.http_limit_conn_module

連線頻率限制

1.limit_conn

Syntax: limit_conn zone number;
Default: —
Context: http, server, location

2.limit_conn_log_level

Syntax: limit_conn_log_level info | notice | warn | error;
Default: limit_conn_log_level error;
Context: http, server, location

3.limit_conn_status

Syntax: limit_conn_status code;
Default: limit_conn_status 503;
Context: http, server, location

4.limit_conn_zone

Syntax: limit_conn_zone key zone=name:size;
Default: —
Context: http

5.limit_zone

Syntax: limit_zone name $variable size;
Default: —
Context: http

示例配置

$binary_remote_addr 比 remote_addr 佔用的位元組少。

limit_conn_zone $binary_remote_addr zone=conn_zone:1m;

server {
listen80;
server_name walidream.com;

location / {
root /opt/app/code;
limit_conn conn_zone 1;
index sub_module.html sub_module.htm;
}
}

用壓力測試工具 ab 進行壓力測試。

ab -n 100 -c 20 http://walidream/sub_module.html

5.limit_req_module

請求頻率限制

1.limit_req

Syntax: limit_req zone=name [burst=number] [nodelay | delay=number];
Default: —
Context: http, server, location

2.limit_req_log_level

Syntax: limit_req_log_level info | notice | warn | error;
Default: limit_req_log_level error;
Context: http, server, location

3.limit_req_status

Syntax: limit_req_status code;
Default: limit_req_status 503;
Context: http, server, location

4.limit_req_zone

Syntax: limit_req_zone key zone=name:size rate=rate [sync];
Default: —
Context: http

示例配置

$binary_remote_addr 比 remote_addr 佔用的位元組少。

limit_req_zone $binary_remote_addr zone=req_zone:1m rate=1r/s;

server {
listen80;
server_name walidream.com;

location / {
root /opt/app/code;
#limit_req zone=req_zone burst=3 nodelay;
#limit_req zone=req_zone burst=3 nodelay;
#limit_req zone=req_zone burst=3;
limit_req zone=req_zone;
index sub_module.html sub_module.htm;
}
}

用壓力測試工具 ab 進行壓力測試。

ab -n 100 -c 20 http://walidream/sub_module.html

輸出

Server Software:nginx/1.14.1
Server Hostname:walidream.com
Server Port:80

Document Path:/sub_module.html
Document Length:143 bytes

Concurrency Level:20
Time taken for tests:1.009 seconds
Complete requests:100
Failed requests:98
(Connect: 0, Receive: 0, Length: 98, Exceptions: 0)
Write errors:0
Non-2xx responses:98
Total transferred:72388 bytes
HTML transferred:52912 bytes
Requests per second:99.06 [#/sec] (mean)
Time per request:201.895 [ms] (mean)
Time per request:10.095 [ms] (mean, across all concurrent requests)
Transfer rate:70.03 [Kbytes/sec] received

Connection Times (ms)
minmean[+/-sd] medianmax
Connect:010 100.001001
Processing:010.112
Waiting:010.212
Total:11299.921001

Percentage of the requests served within a certain time (ms)
50%2
66%2
75%2
80%2
90%2
95%2
98%3
99%1001
 100%1001 (longest request)

nginx 模組(8)

1.http_stub_status_module配置

2.random_index_module

3.http_sub_module

1.sub_filter 作用是替換返回html的內容

2.sub_filter_last_modified用來校驗服務端的html內容是否有更新，主要用於快取

3.sub_filter_once 只匹配第一個還是匹配所有

4.sub_filter_types 替換的型別

4.http_limit_conn_module

1.limit_conn

2.limit_conn_log_level

3.limit_conn_status

4.limit_conn_zone

5.limit_zone

5.limit_req_module

1.limit_req

2.limit_req_log_level

3.limit_req_status

4.limit_req_zone

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