site outage problem with apache2, php5

[Kevin Sha]

Hi,

I am running apache2 php5 on ubuntu 120.04 LTS
i have faced site outage for 15 min periodically.
i have noticed a /etc/cron.d/php5 corn running every 30 min. During this
time nobody can access the the site

please help me to trouble shoot

The package that is installed are

ii  libapache2-mod-php5              5.3.10-1ubuntu3.6
 server-side, HTML-embedded scripting language (Apache 2 module)
ii  php5                             5.3.10-1ubuntu3.6
 server-side, HTML-embedded scripting language (metapackage)
ii  php5-cli                         5.3.10-1ubuntu3.6
 command-line interpreter for the php5 scripting language
ii  php5-common                      5.3.10-1ubuntu3.6            Common
files for packages built from the php5 source
ii  php5-curl                        5.3.10-1ubuntu3.6            CURL
module for php5
ii  php5-dev                         5.3.10-1ubuntu3.6            Files for
PHP5 module development
ii  php5-gd                          5.3.10-1ubuntu3.6            GD module
for php5
ii  php5-mcrypt                      5.3.5-0ubuntu1               MCrypt
module for php5
ii  php5-mysql                       5.3.10-1ubuntu3.6            MySQL
module for php5


ii  apache2                          2.2.22-1ubuntu1.3            Apache
HTTP Server metapackage
ii  apache2-mpm-prefork              2.2.22-1ubuntu1.3            Apache
HTTP Server - traditional non-threaded model
ii  apache2-utils                    2.2.22-1ubuntu1.3            utility
programs for webservers
ii  apache2.2-bin                    2.2.22-1ubuntu1.3            Apache
HTTP Server common binary files
ii  apache2.2-common                 2.2.22-1ubuntu1.3            Apache
HTTP Server common files
ii  libapache2-mod-php5              5.3.10-1ubuntu3.6
 server-side, HTML-embedded scripting language (Apache 2 module)

Thank you
keivn
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