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Почему Apache создает так много внутренних фиктивных соединений? Проблемы с использованием ЦП, влияющие на производительность сервера

Попытка решить некоторые проблемы с использованием ЦП и расследовать возможные вредоносные действия. В связи с этим мне интересно узнать о множестве фиктивных соединений в журналах Apache. Каково их происхождение и почему их так много?

Мы запускаем ряд веб-приложений PHP / MySQL. Я заметил, что во время очень высокого скачка ЦП (до 100% использования), top показывает, что Apache создает множество процессов для www-data , которые, как я полагаю, попадают в сценарии PHP.

Являются ли фиктивные соединения симптомом проблемы или частью причины? Что еще я могу изучить?

/var/log/apache2/access.log 

::1 - - [09/Dec/2019:14:42:32 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:33 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:34 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:35 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:36 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:37 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:38 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:39 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:40 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:46 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:53 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:54 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:55 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:57 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:58 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:42:59 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:00 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:01 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:02 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:03 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:04 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:05 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:06 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:12 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:13 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:14 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:15 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:16 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:17 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:22 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:23 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:27 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:34 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:38 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:39 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:40 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:41 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:42 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:43 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:44 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:45 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:46 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:47 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:48 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:49 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:50 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:51 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:52 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:53 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:43:57 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:44:00 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:44:03 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:44:04 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:44:05 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
::1 - - [09/Dec/2019:14:44:06 +0000] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.37 (Ubuntu) OpenSSL/1.1.1a (internal dummy connection)"
0
задан 10 December 2019 в 13:07
1 ответ

Из документации Apache:

, Когда Apache Сервер HTTP справляется со своими дочерними процессами, ему нужен способ разбудить процессы, которые прислушиваются к новым соединениям. Чтобы сделать это, это передает простой Запрос HTTP обратно себе. Этот запрос появится в access_log файле с удаленным набором адреса к петлевому интерфейсу (обычно 127.0.0.1 или:: 1, если IPv6 настроен). При входе Строки агента пользователя (как в объединенном формате журнала), Вы будете видеть подпись сервера, сопровождаемую" (внутреннее фиктивное соединение)" на серверах не-SSL. Во время определенных периодов можно видеть до одного такого запроса на каждый httpd дочерний процесс.

Эти запросы совершенно нормальны, и Вы не должны волноваться о них. Они могут просто быть проигнорированы.

можно использовать .htaccess путем перенаправления запросов от "внутреннего фиктивного соединения" с пустым файлом 

RewriteEngine on
RewriteCond %{HTTP_USER_AGENT} ^.*internal dummy connection.*$ [NC]
RewriteRule ^/$ /empty.html [L]
0
ответ дан 2 January 2020 в 11:02

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