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Install vlogger in debian etch
#aptitude install vlogger
This will complete the installation
First you need to make sure you have working apache server
Configuring vlogger
Now you have to change the LogFormat line (there are multiple LogFormat lines - at least change the one that is named combined) in /etc/apache2/apache2.conf. We must add the string %v at the beginning of it
vi /etc/apache2/apache2.conf
#LogFormat “%h %l %u %t \”%r\” %>s %b \”%{Referer}i\” \”%{User-Agent}i\”" combined
LogFormat “%v %h %l %u %t \”%r\” %>s %b \”%{Referer}i\” \”%{User-Agent}i\”" combined
save and exit the file
Then add the following CustomLog line to the same file (you can put it directly after the LogFormat line)
vi /etc/apache2/apache2.conf
CustomLog “| /usr/sbin/vlogger -s access.log /var/log/apache2″ combined
save and exit the file
NOTE :- Only CustomLog directive that we need in our whole Apache configuration. Please disable all other CustomLog directives, especially in your virtual host configurations
Now restart apache using the following command
#/etc/init.d/apache2 restart
Vlogger will now create subdirectories in the /var/log/apache2 directory, one per virtual host, and it will create access logs that contain the current date in the file name. It will also create a symlink called access.log that points to the current log file.
Let’s assume we have two virtual hosts, www.domain1.com and www.domain2.com. Then this is how the /var/log/lighttpd directory will look like:
/var/log/apache2/
www.domain1.com/
02142008-access.log
02132008-access.log
02122008-access.log
access.log -> 02122008-access.log
www.domain2.com/
02142008-access.log
02132008-access.log
02122008-access.log
access.log -> 02122008-access.log
Vlogger man page
To use vlogger, you need to add a “%v” to the first part of your LogFormat:
LogFormat “%v %h %l %u %t \”%r\” %>s %b \”%{Referer}i\” \”%{User-Agent}i\”" combined
Then call it from a customlog:
CustomLog “| /usr/sbin/vlogger -s access.log -u www-logs -g www-logs /var/log/apache2″ combined
Options are given in short format on the command line.
-a Do not autoflush files. This may improve performance but may break logfile analyzers that depend on full entries in the logs.
-e ErrorLog mode. In this mode, the host parsing is disabled, and the file is written out using the template under the specified LOGDIR.
-n Disables rotation. This option disables rotation altogether.
-f MAXFILES Maximum number of filehandles to keep open. Defaults to 100. Setting this value too high may result in the system running out of file descriptors. Setting it too low may affect performance.
-u UID Change user to UID when running as root.
-g GID Change group to GID when running as root.
-t TEMPLATE Filename template using Date::Format codes. Default is “%m%d%Y-access.log”, or “%m%d%Y-error.log”. When using the -r option, the default becomes “%m%d%Y-%T-access.log” or “%m%d%Y-%T-error.log”.
-s SYMLINK Specifies the name of a symlink to the current file.
-r SIZE Rotate files when they reach SIZE. SIZE is given in bytes.
-d CONFIG Use the DBI usage tracker.
-h Displays help.
-v Prints version information.
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