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Open Source Technologies

Notes <VirtualHost 10.0.0.2>
DocumentRoot “/home/sites/domain1/html/”
ServerName domain1.com
ErrorLog /home/sites/domain1/logs/error.log
</VirtualHost>
If you are responsible for reviewing error log files as a server administrator, it is recommended
that you maintain a single error log. If you’re hosting for clients, and they are responsible for
monitoring the error logs, it’s more convenient to specify individual error logs they can access
at their own convenience.

The setting that controls the level of error logging to capture follows below:
LogLevel warn
Apache’s definitions for their error log levels are as follows:

Level Description
Emerg Emergencies-System is unusable
alert Action must be taken immediately
Crit Critical conditions
Error Error conditions
Warn Warning conditions
Notice Normal but significant condition
Info Informational
Debug Debug-level messages
4.3.2 Apache Access Log File

Apache server records all incoming requests and all requests processed to a log file. The format
of the access log is highly configurable. The location and content of the access log are controlled
by the CustomLog directive. Default apache access log file location:
• RHEL/Red Hat/CentOS/Fedora Linux Apache access file location -/var/log/httpd/
access_log

• Debian/Ubuntu Linux Apache access log file location -/var/log/apache2/access.log
• FreeBSD Apache access log file location -/var/log/httpd-access.log

To find exact apache log file location, you can use grep command:
# grep CustomLog /usr/local/etc/apache22/httpd.conf

# grep CustomLog /etc/apache2/apache2.conf
# grep CustomLog /etc/httpd/conf/httpd.conf

Output

# a CustomLog directive.
#CustomLog “/var/log/httpd-access.log” common

CustomLog “/var/log/httpd-access.log” combined

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