Blog dot Melimato dot Com » apache http://blog.melimato.com Those things we do Thu, 24 Dec 2009 11:58:58 +0000 en hourly 1 http://wordpress.org/?v=abc Using apache’s RedirectMatch instead of ServerAlias to avoid content duplication http://blog.melimato.com/using-apaches-redirectmatch-instead-of-serveralias-to-avoid-content-duplication/ http://blog.melimato.com/using-apaches-redirectmatch-instead-of-serveralias-to-avoid-content-duplication/#comments Mon, 18 May 2009 00:30:14 +0000 pablo http://blog.melimato.com/using-apaches-redirectmatch-instead-of-serveralias-to-avoid-content-duplication/ Most web sites I do have many domains but want all those domains to point to the “main domain” www.domain.com. My first solution was to put Apaches’s directive ServerAlias in the site’s virtual host configuration. This lead to content duplication since domain.com and domain.net and www.domain.com are two different web sites for the rest of the world. To avoid this problem the only solution I’ve found was to create two different virtual hosts and set Apache’s Redirect directive. The first VirtualHost will hold all the domains aliases and redirect permanently (301) to the “main domain”

<VirtualHost ip_address:80>
    ServerName domain.com
    ServerAlias domain.net
    ServerAlias domain.biz
    RedirectMatch permanent /(.*) http://www.domain.com/$1
</VirtualHost>
 
<VirtualHost ip_address:80>
    ServerName www.domain.com
    etc...
</VirtualHost>
]]> http://blog.melimato.com/using-apaches-redirectmatch-instead-of-serveralias-to-avoid-content-duplication/feed/ 3 Set new logrotate tasks to rotate apache logs in non-standard directories http://blog.melimato.com/set-new-logrotate-tasks-to-rotate-apache-logs-in-non-standard-directories/ http://blog.melimato.com/set-new-logrotate-tasks-to-rotate-apache-logs-in-non-standard-directories/#comments Thu, 23 Apr 2009 15:52:36 +0000 pablo http://www.melimato.com/blog/?p=64 I prefer compressing old logs to save space. Edit logrotate.conf

vi /etc/logrotate.conf

Uncomment the following line:

compress

Since I keep all my hosting’s logs in /home/hosting/log I need to add a new task to logrotate:

Create a new file under logrotate.d called hosting:

vi /etc/logrotate.d/hosting

Add the following contents to that file:

/home/hosting/*/log/*.log {
  weekly
    missingok
    rotate 52
    compress
    delaycompress
    notifempty
    create 640 root adm
    sharedscripts
    postrotate
        if [ -f "`. /etc/apache2/envvars ; echo ${APACHE_PID_FILE:-/var/run/apache2.pid}`" ]; then
            /etc/init.d/apache2 reload > /dev/null
        fi
    endscript
}

Explanation of script lines according to man page:

missingok
If the log file is missing, go on to the next one without issuing an error message.

rotate count
Log files are rotated times before being removed or mailed to the address specified in a mail directive. If count is 0, old versions are removed rather then rotated.
In our case we will remove logfiles older than 1 year (52 weeks)

compress
Duh!

delaycompress
Postpone compression of the previous log file to the next rotation cycle. This has only effect when used in combination with compress. It can be used when some program can not be told to close its logfile and thus might continue writing to the previous log file for some time.

notifempty
Do not rotate the log if it is empty (this overrides the ifempty option).

create mode owner group
Immediately after rotation (before the postrotate script is run) the log file is created (with the same name as the log file just rotated). mode specifies the mode for the log file in octal (the same as chmod(2)), owner specifies the user name who will own the log file, and group specifies the group the log file will belong to. Any of the log file attributes may be omitted, in which case those attributes for the new file will use the same values as the original log file for the omitted attributes. This option can be disabled using the nocreate option.

sharedscripts
Normally, prescript and postscript scripts are run for each log which is rotated, meaning that a single script may be run multiple times for log file entries which match multiple files (such as the /var/log/news/* example). If sharedscript is specified, the scripts are only run once, no matter how many logs match the wildcarded pattern. However, if none of the logs in the pattern require rotating, the scripts will not be run at all. This option overrides the nosharedscripts option and implies create option.
postrotate/endscript
The lines between postrotate and endscript (both of which must appear on lines by themselves) are executed after the log file is rotated. These directives may only appear inside of a log file definition.

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