Почему apache2 постоянно терпит неудачу?

У меня проблемы с сервером постоянно. Кажется, он терпит неудачу каждые несколько часов, и я не могу сказать, почему.

Этим утром у меня было 503 на всех моих сайтах, я попытался перезапустить Apache, но

# service apache2 restart
[....] Restarting web server: apache2(98)Address already in use:     make_sock: could not bind to address 127.0.0.1:8080
no listening sockets available, shutting down
Unable to open logs
Action 'start' failed.
The Apache error log may have more information.
failed!

Я узнал, что некоторые процессы все еще работают. Убив их, помог перезагрузить Apache.

# grep -ri listen /etc/apache2
/etc/apache2/apache2.conf:#   supposed to determine listening ports     for incoming connections, and which
/etc/apache2/apache2.conf:# Include list of ports to listen on and     which to use for name based vhosts
/etc/apache2/ports.conf:Listen 127.0.0.1:8080
/etc/apache2/ports.conf:#Listen 127.0.0.1:443
/etc/apache2/ports.conf:#    Listen 443
/etc/apache2/ports.conf:#    Listen 443

# killall -9 apache2

# service apache2 restart
[ ok ] Restarting web server: apache2.

Я до сих пор не знаю, как предотвратить сбой, вот несколько журналов, которые я совершенно не понимаю. Пожалуйста помоги:)

С того момента, когда это не удалось:

[Sun May 31 06:26:00 2015] [notice] FastCGI: process manager initialized (pid 9466)
[Sun May 31 06:26:00 2015] [error] python_init: Python version mismatch, expected '2.7.2+', found '2.7.3'.
[Sun May 31 06:26:00 2015] [error] python_init: Python executable found '/usr/bin/python'.
[Sun May 31 06:26:00 2015] [error] python_init: Python path being used '/usr/lib/python2.7/:/usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib/python2.7/lib-old:/usr/lib/python2.7/lib-dynload'.
[Sun May 31 06:26:00 2015] [notice] mod_python: Creating 8 session mutexes based on 1000 max processes and 0 max threads.
[Sun May 31 06:26:00 2015] [notice] mod_python: using mutex_directory /tmp 
[Sun May 31 06:26:01 2015] [notice] Apache/2.2.22 (Debian) mod_fastcgi/mod_fastcgi-SNAP-0910052141 Phusion_Passenger/5.0.8 PHP/5.5.25-1~dotdeb+7.1 mod_python/3.3.1 Python/2.7.3 mod_ssl/2.2.22 OpenSSL/1.0.1e mod_wsgi/3.3 configured -- resuming normal operations
[Sun May 31 06:26:01 2015] [warn] long lost child came home! (pid 17083)
[Sun May 31 06:26:01 2015] [warn] long lost child came home! (pid 17328)
[Sun May 31 06:26:01 2015] [warn] long lost child came home! (pid 17329)
[Sun May 31 06:26:01 2015] [warn] long lost child came home! (pid 17330)

И это регистрируется в основном постоянно:

[Sun May 31 13:36:03 2015] [warn] Couldn't set uid/gid/priority, closing connection.
[Sun May 31 13:36:03 2015] [warn] (itkmpm: pid=30911 uid=1001, gid=1001) itk_post_perdir_config(): setgid(1005): Operation not permitted
[Sun May 31 13:36:03 2015] [warn] Couldn't set uid/gid/priority, closing connection.
[Sun May 31 13:36:03 2015] [warn] (itkmpm: pid=30897 uid=1001, gid=1001) itk_post_perdir_config(): setgid(1005): Operation not permitted
[Sun May 31 13:36:03 2015] [warn] Couldn't set uid/gid/priority, closing connection.
[Sun May 31 13:36:04 2015] [warn] (itkmpm: pid=30930 uid=1001, gid=1001) itk_post_perdir_config(): setgid(33): Operation not permitted
[Sun May 31 13:36:04 2015] [warn] Couldn't set uid/gid/priority, closing connection.
[Sun May 31 13:36:06 2015] [warn] (itkmpm: pid=30938 uid=1001, gid=1001) itk_post_perdir_config(): setgid(33): Operation not permitted

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