Apache no responde. Recursos insuficientes?

minhoca · Jan 25th 2016

En varios momentos del día de hoy el servidor que manejo dejó de responder a peticiones http. Sin embargo todos los servicios continuaron en funcionamiento (aparentemente), incluyendo apache.

A diferencia de otros días, hoy hubo un incremento considerable de conexiones y descargas de archivos gestionados por Joomla. Necesité reiniciar el servidor varias veces (no se solucionaba con un reinicio de apache).

Revisando /var/log/apache/error.log encontré varias lineas registradas con "mpm_worker:error".

El servidor tiene 8G de Ram (Core i3-2130 3.4 GHz).

Buscando una solución urxente con pouca lectura realicé los siguientes cambios:

- En /etc/apache2/apache2.conf, pasé MaxKeepAliveRequests de 100 a 150.

- En /etc/apache2/mods-available/mpm_worker.conf:
StartServers 2 (sin cambios)
MinSpareThreads 25 (sin cambios)
MaxSpareThreads 75 -> 150
ThreadLimit 64 -> 128
ThreadsPerChild 25 -> 50
MaxRequestWorkers 150 -> 450
MaxConnectionsPerChild 0 (sin cambios)

Después de reiniciar, no se repitieron los fallos, pero también disminuyó el número de conexiones, por lo que no se si la solución fue correcta o casual.

Seguramente no fue la mejor solución. Sería suficiente modificar únicamente memory_limit de php pasando seu valor de 64 a 128M, sin más cambios? Sería conveniente modificar mpm_worker.conf?

**Nuxwin** · Jan 26th 2016

@minhoca

Wich error exactly? Please show use your Apache error log.

Also please:

i-MSCP version?
i-MSCP Httpd server implementation (Fcgid, PHP-FPM) ?

Thanks.

minhoca · Jan 26th 2016

English is not write, so I use google translator. I'm sorry.

This is the code /var/log/apache/error.log

Code

[Mon Jan 25 06:25:05.570852 2016] [mpm_worker:notice] [pid 28381:tid 140027780605824] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 06:25:05.570882 2016] [core:notice] [pid 28381:tid 140027780605824] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 05:25:05 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 08:48:09.868141 2016] [mpm_worker:notice] [pid 28381:tid 140027780605824] AH00297: SIGUSR1 received. Doing graceful restart
[Mon Jan 25 07:48:09 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 08:48:09.882642 2016] [mpm_worker:notice] [pid 28381:tid 140027780605824] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 08:48:09.882668 2016] [core:notice] [pid 28381:tid 140027780605824] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 07:48:09 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 07:49:12 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 08:49:21.717960 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 28386 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718063 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 28387 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718118 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 28018 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718172 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 24345 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718189 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 24341 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718205 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 24155 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718221 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 30550 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718269 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 32429 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:21.718319 2016] [core:error] [pid 28381:tid 140027780605824] AH00046: child process 2785 still did not exit, sending a SIGKILL
[Mon Jan 25 08:49:22.722981 2016] [mpm_worker:notice] [pid 28381:tid 140027780605824] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 08:49:23.476073 2016] [suexec:notice] [pid 11649:tid 140649234605952] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 08:49:23.490468 2016] [mpm_worker:notice] [pid 11651:tid 140649234605952] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 08:49:23.490502 2016] [core:notice] [pid 11651:tid 140649234605952] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 07:49:23 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 08:50:07.538742 2016] [mpm_worker:error] [pid 11651:tid 140649234605952] AH00287: server is within MinSpareThreads of MaxRequestWorkers, consider raising the MaxRequestWorkers setting
[Mon Jan 25 08:50:21.553560 2016] [mpm_worker:error] [pid 11651:tid 140649234605952] AH00286: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
[Mon Jan 25 08:03:33 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 09:03:43.113379 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11656 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:43.113471 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11657 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:43.113527 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11733 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:43.113577 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11761 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:43.113645 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11790 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:43.113696 2016] [core:error] [pid 11651:tid 140649234605952] AH00046: child process 11818 still did not exit, sending a SIGKILL
[Mon Jan 25 09:03:44.117380 2016] [mpm_worker:notice] [pid 11651:tid 140649234605952] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 09:03:44.872312 2016] [suexec:notice] [pid 14770:tid 139893895800704] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 09:03:44.886324 2016] [mpm_worker:notice] [pid 14772:tid 139893895800704] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 09:03:44.886359 2016] [core:notice] [pid 14772:tid 139893895800704] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 08:03:44 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 08:04:06 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 08:04:06 2016] [alert] i-MSCP Vlogger: Unable to dump tracker: DBD::mysql::st execute failed: MySQL server has gone away at /usr/local/sbin/vlogger line 502, <STDIN> line 260.
[Mon Jan 25 08:04:06 2016] [alert] i-MSCP Vlogger: Unable to dump tracker: DBD::mysql::st execute failed: MySQL server has gone away at /usr/local/sbin/vlogger line 502, <STDIN> line 260.
[Mon Jan 25 08:04:06 2016] [alert] i-MSCP Vlogger: Unable to dump tracker: DBD::mysql::st execute failed: MySQL server has gone away at /usr/local/sbin/vlogger line 502, <STDIN> line 260.
[Mon Jan 25 09:04:15.839882 2016] [core:error] [pid 14772:tid 139893895800704] AH00046: child process 14854 still did not exit, sending a SIGKILL
[Mon Jan 25 09:04:16.841015 2016] [mpm_worker:notice] [pid 14772:tid 139893895800704] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 09:05:33.722816 2016] [suexec:notice] [pid 1282:tid 139813398189952] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 09:05:33.769466 2016] [mpm_worker:notice] [pid 1322:tid 139813398189952] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 09:05:33.769513 2016] [core:notice] [pid 1322:tid 139813398189952] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 09:05:34 2016] [alert] i-MSCP Vlogger: unable to connect to MySQL server: Can't connect to MySQL server on '127.0.0.1' (111)
[Mon Jan 25 09:05:34 2016] [alert] i-MSCP Vlogger: Tracker feature turned off
[Mon Jan 25 08:05:34 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 09:06:01.798729 2016] [mpm_worker:error] [pid 1322:tid 139813398189952] AH00287: server is within MinSpareThreads of MaxRequestWorkers, consider raising the MaxRequestWorkers setting
[Mon Jan 25 09:06:02.799808 2016] [mpm_worker:error] [pid 1322:tid 139813398189952] AH00286: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
[Mon Jan 25 09:16:11.022599 2016] [mpm_worker:notice] [pid 1322:tid 139813398189952] AH00297: SIGUSR1 received. Doing graceful restart
[Mon Jan 25 08:16:11 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 09:16:11.083689 2016] [mpm_worker:notice] [pid 1322:tid 139813398189952] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 09:16:11.083717 2016] [core:notice] [pid 1322:tid 139813398189952] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 08:16:11 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 08:20:29 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 09:20:39.019519 2016] [core:error] [pid 1322:tid 139813398189952] AH00046: child process 8469 still did not exit, sending a SIGKILL
[Mon Jan 25 09:20:39.019598 2016] [core:error] [pid 1322:tid 139813398189952] AH00046: child process 7566 still did not exit, sending a SIGKILL
[Mon Jan 25 09:20:39.019617 2016] [core:error] [pid 1322:tid 139813398189952] AH00046: child process 7595 still did not exit, sending a SIGKILL
[Mon Jan 25 09:20:40.021459 2016] [mpm_worker:notice] [pid 1322:tid 139813398189952] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 09:20:40.776916 2016] [suexec:notice] [pid 9327:tid 139850321241984] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 09:20:40.792286 2016] [mpm_worker:notice] [pid 9329:tid 139850321241984] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 09:20:40.792323 2016] [core:notice] [pid 9329:tid 139850321241984] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 08:20:40 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 09:55:53.911437 2016] [mpm_worker:error] [pid 9329:tid 139850321241984] AH00287: server is within MinSpareThreads of MaxRequestWorkers, consider raising the MaxRequestWorkers setting
[Mon Jan 25 09:56:37.954030 2016] [mpm_worker:error] [pid 9329:tid 139850321241984] AH00286: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
[Mon Jan 25 09:09:45 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 09:09:45 2016] [alert] i-MSCP Vlogger: Unable to dump tracker: DBI connect('database=imscp;host=127.0.0.1;port=3306','vlogger_user',...) failed: Can't connect to MySQL server on '127.0.0.1' (111) at /usr/local/sbin/vlogger line 493.
[Mon Jan 25 10:09:54.968693 2016] [core:error] [pid 9329:tid 139850321241984] AH00046: child process 13708 still did not exit, sending a SIGKILL
[Mon Jan 25 10:09:55.969941 2016] [mpm_worker:notice] [pid 9329:tid 139850321241984] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 10:11:11.390729 2016] [suexec:notice] [pid 1230:tid 140558327637888] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 10:11:11.444953 2016] [mpm_worker:notice] [pid 1247:tid 140558327637888] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 10:11:11.444997 2016] [core:notice] [pid 1247:tid 140558327637888] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 10:11:13 2016] [alert] i-MSCP Vlogger: unable to connect to MySQL server: Can't connect to MySQL server on '127.0.0.1' (111)
[Mon Jan 25 10:11:13 2016] [alert] i-MSCP Vlogger: Tracker feature turned off
[Mon Jan 25 09:11:13 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 10:32:37 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 11:32:46.558029 2016] [core:error] [pid 1247:tid 140558327637888] AH00046: child process 7141 still did not exit, sending a SIGKILL
[Mon Jan 25 11:32:47.559219 2016] [mpm_worker:notice] [pid 1247:tid 140558327637888] AH00295: caught SIGTERM, shutting down
[Mon Jan 25 11:32:48.316960 2016] [suexec:notice] [pid 19428:tid 140237810640768] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Jan 25 11:32:48.332544 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 11:32:48.332580 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 10:32:48 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 11:46:02.460479 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00297: SIGUSR1 received. Doing graceful restart
[Mon Jan 25 10:46:02 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 11:46:02.477853 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 11:46:02.477876 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 10:46:02 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 21:24:18.815585 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00297: SIGUSR1 received. Doing graceful restart
[Mon Jan 25 20:24:18 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 21:24:18.876750 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 21:24:18.876774 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 20:24:18 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Mon Jan 25 21:24:51.374357 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00297: SIGUSR1 received. Doing graceful restart
[Mon Jan 25 20:24:51 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Mon Jan 25 21:24:51.391091 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Mon Jan 25 21:24:51.391123 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jan 25 20:24:51 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations

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Versión i-mscp: 1.2.9
httpd PHP-FPM
Debian 7.5 64

Thank you.

minhoca · Jan 28th 2016

Volvió a ocurrir:

Code

[Thu Jan 28 06:25:04.489185 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu Jan 28 06:25:04.489214 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jan 28 05:25:04 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Thu Jan 28 06:40:26.400585 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00287: server is within MinSpareThreads of MaxRequestWorkers, consider raising the MaxRequestWorkers setting
[Thu Jan 28 06:46:25.776769 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00286: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
[Thu Jan 28 07:05:47.895603 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:02.225226 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:03.226321 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:05.229020 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:07.231752 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:08.232816 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers

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Carga de servidor baja, y memoria consumida inferior a 9%. Amplié nuevamente MaxRequestWorkers, pasando de 450 a 600.

**kurgans** · Jan 28th 2016

Deberías probar a darle mas usuarios a fpm, eso tambien te puede provocar que no sirvas petciones

/etc/php5/php5/fpm/php-fpm.conf

Por defecto esta en 200...
process.max

si recibes mas visitas el sistema dara error... por mucho que amplies apache si no tienes para pasar el proceso php se quedara en blanco.

minhoca · Jan 28th 2016

Hoy, despues de subir MaxRequestWorkers a 600, volvió a ocurrir lo mismo. El servidor aparentemente tiene todos los servicios en funcionamiento, pero no devuelve nada por http. Llegué a tener simultaneamente 947 conexións a un web con Joomla.

El cambio de MaxRequestWorkers fue aproximadamente a las 11:30.

Acabo de realizar el cambio que propone kurgans, pasando process.max de 200 a 2000.

Supongo que el servidor aguantará el incremento de valores, pues en los momentos de mayor conexiones el uso de memoria y carga de procesadores se mantenía en valores aceptables.

Estos son todos los errores de hoy. Hai un log que hace referencia a mysql.

Code

[Thu Jan 28 06:25:04.489185 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu Jan 28 06:25:04.489214 2016] [core:notice] [pid 19430:tid 140237810640768] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jan 28 05:25:04 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Thu Jan 28 06:40:26.400585 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00287: server is within MinSpareThreads of MaxRequestWorkers, consider raising the MaxRequestWorkers setting
[Thu Jan 28 06:46:25.776769 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00286: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
[Thu Jan 28 07:05:47.895603 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:02.225226 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:03.226321 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:05.229020 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:07.231752 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:25:08.232816 2016] [mpm_worker:error] [pid 19430:tid 140237810640768] AH00288: scoreboard is full, not at MaxRequestWorkers
[Thu Jan 28 11:07:05 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Thu Jan 28 12:07:14.870578 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 20563 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.870651 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 24539 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.870878 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 20558 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.870930 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 20582 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871003 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 24514 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871047 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 2716 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871131 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 7056 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871211 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 14426 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871248 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 14445 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871332 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 1122 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871410 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 24981 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871471 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 19812 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871497 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 15114 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871562 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 1123 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871629 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 11463 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:14.871650 2016] [core:error] [pid 19430:tid 140237810640768] AH00046: child process 10227 still did not exit, sending a SIGKILL
[Thu Jan 28 12:07:15.874030 2016] [mpm_worker:notice] [pid 19430:tid 140237810640768] AH00295: caught SIGTERM, shutting down
[Thu Jan 28 12:07:16.629170 2016] [suexec:notice] [pid 30930:tid 139736073701248] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Thu Jan 28 12:07:16.644991 2016] [mpm_worker:notice] [pid 30932:tid 139736073701248] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu Jan 28 12:07:16.645028 2016] [core:notice] [pid 30932:tid 139736073701248] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jan 28 11:07:16 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations
[Thu Jan 28 11:07:50 2016] [notice] i-MSCP Vlogger: caught TERM, shutting down
[Thu Jan 28 11:07:50 2016] [alert] i-MSCP Vlogger: Unable to dump tracker: DBI connect('database=imscp;host=127.0.0.1;port=3306','vlogger_user',...) failed: Can't connect to MySQL server on '127.0.0.1' (111) at /usr/local/sbin/vlogger line 493.
[Thu Jan 28 12:07:52.217048 2016] [mpm_worker:notice] [pid 30932:tid 139736073701248] AH00295: caught SIGTERM, shutting down
[Thu Jan 28 12:09:11.897362 2016] [suexec:notice] [pid 1781:tid 139890869671808] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Thu Jan 28 12:09:11.951578 2016] [mpm_worker:notice] [pid 3219:tid 139890869671808] AH00292: Apache/2.4.10 (Debian) OpenSSL/1.0.1k configured -- resuming normal operations
[Thu Jan 28 12:09:11.951623 2016] [core:notice] [pid 3219:tid 139890869671808] AH00094: Command line: '/usr/sbin/apache2'
[Thu Jan 28 12:09:14 2016] [alert] i-MSCP Vlogger: unable to connect to MySQL server: Can't connect to MySQL server on '127.0.0.1' (111)
[Thu Jan 28 12:09:14 2016] [alert] i-MSCP Vlogger: Tracker feature turned off
[Thu Jan 28 11:09:14 2016] [notice] i-MSCP Vlogger: started CustomLog Handler -- resuming normal operations

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