Hello!

I have a web server based on Ubuntu Server 9.10 with this software:

apache 2
PHP 5.3
MySQL 5
Python 2.5

Few of my websites are PHP based, few use python/django through mod_wsgi.

For month or so, every day my apache server stops responding until I manually restart it.

Error logs show:

[Fri Mar 05 17:06:47 2010] [error] could not make child process 25059 exit, attempting to continue anyway
[Fri Mar 05 17:06:47 2010] [error] could not make child process 25061 exit, attempting to continue anyway
[Fri Mar 05 17:06:47 2010] [error] could not make child process 24930 exit, attempting to continue anyway
[Fri Mar 05 17:06:47 2010] [error] could not make child process 25084 exit, attempting to continue anyway
[Fri Mar 05 17:06:47 2010] [error] could not make child process 25105 exit, attempting to continue anyway

and so on.

I tried to google this problem but it seems, that I can't find a solution there.

How can I determine the cause of this error and how do I fix it?

Thank you for your help.

UPDATE

• Updating mod-wsgi to version 3.1 didn't solve the problem
• Updating PHP to 5.3 also didn't solve it

Here is a list of all installed modules:

core
mod_log_config
mod_logio
prefork
http_core
mod_so
mod_alias
mod_auth_basic
mod_authn_file
mod_authz_default
mod_authz_groupfile
mod_authz_host
mod_authz_user
mod_autoindex
mod_cgi
mod_deflate
mod_dir
mod_env
mod_mime
mod_negotiation
mod_php5 mod_rewrite
mod_setenvif
mod_status
mod_wsgi

Here's how my virtual host with wsgi looks:

<VirtualHost *:80>
    ServerName example.net
    DocumentRoot /var/www/example.net
    #wcgi script that serves all the thing
    WSGIScriptAlias / /var/www/example.net/index.wsgi
    WSGIDaemonProcess example user=wsgideamonuser group=root processes=1 threads=10
    WSGIProcessGroup example

    Alias /static /var/www/example.net/static
    #serving admin files
    Alias /media/ /usr/local/lib/python2.6/dist-packages/django/contrib/admin/media/

    <Location "/static">
        SetHandler None
    </Location>
    <Location "/media">
        SetHandler None
    </Location>

    ErrorLog /var/www/example.net/error.log
</VirtualHost>

Error log now contains two types of errors fallowed one by another:

[error] child process 9486 still did not exit, sending a SIGKILL
[error] could not make child process 9106 exit, attempting to continue anyway