[linux] error_log per Virtual Host?

On one Linux Server running Apache and PHP 5, we have multiple Virtual Hosts with separate log files. We cannot seem to separate the php error_log between virtual hosts.

Overriding this setting in the <Location> of the httpd.conf does not seem to do anything.

Is there a way to have separate php error_logs for each Virtual Host?

This question is related to linux apache virtualhost

The answer is

If somebody comes looking it should look like this:

<VirtualHost *:80>
    ServerName example.com
    DocumentRoot /var/www/domains/example.com/html
    ErrorLog /var/www/domains/example.com/apache.error.log
    CustomLog /var/www/domains/example.com/apache.access.log common
    php_flag log_errors on
    php_flag display_errors on
    php_value error_reporting 2147483647
    php_value error_log /var/www/domains/example.com/php.error.log

This is for development only since display_error is turned on. You will notice that the Apache error log is separate from the PHP error log. The good stuff is in php.error.log.

Take a look here for the error_reporting key http://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting

I usually just specify this in an .htaccess file or the vhost.conf on the domain I'm working on. Add this to one of these files:

php_admin_value error_log "/var/www/vhosts/example.com/error_log"

Have you tried adding the php_value error_log '/path/to/php_error_log to your VirtualHost configuration?

The default behaviour for error_log() is to output to the Apache error log. If this isn't happening check your php.ini settings for the error_log directive. Leave it unset to use the Apache log file for the current vhost.

Create Simple VirtualHost:

example hostname:- thecontrolist.localhost

  1. C:\Windows\System32\drivers\etc thecontrolist.localhost in hosts file

  2. C:\xampp\apache\conf\extra\httpd-vhosts.conf

    <VirtualHost *>
      ServerName thecontrolist.localhost
      ServerAlias thecontrolist.localhost
      DocumentRoot "/xampp/htdocs/thecontrolist"
      <Directory "/xampp/htdocs/thecontrolist">
        Options +Indexes +Includes +FollowSymLinks +MultiViews
        AllowOverride All
        Require local
  3. Don't Forget to restart Your apache. for more check this link

php_value error_log "/var/log/httpd/vhost_php_error_log"

It works for me, but I have to change the permission of the log file.

or Apache will write the log to the its error_log.

You can try:

    <VirtualHost myvhost:80>
       php_value error_log "/var/log/httpd/vhost_php_error_log"
    </Virtual Host>

But I'm not sure if it is going to work. I tried on my sites with no success.

Yes, you can try,

php_value error_log "/var/log/php_log" 

in .htaccess or you can have users use ini_set() in the beginning of their scripts if they want to have logging.

Another option would be to enable scripts to default to the php.ini in the folder with the script, then go to the user/host's root folder, then to the server's root, or something similar. This would allow hosts to add their own php.ini values and their own error_log locations.

Don't set error_log to where your syslog stuff goes, eg /var/log/apache2, because they errors will get intercepted by ErrorLog. Instead, create a subdir in your project folder for logs and do php_value error_log "/path/to/project/logs". This goes for both .htaccess files and vhosts. Also make sure you put php_flag log_errors on

My Apache had something like this in httpd.conf. Just change the ErrorLog and CustomLog settings

<VirtualHost myvhost:80>
    ServerAdmin [email protected]
    DocumentRoot /opt/web
    ServerName myvhost
    ErrorLog logs/myvhost-error_log
    CustomLog logs/myvhost-access_log common

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