HTTP Server Refresh

nandhapswan · 01-27-2011, 12:34 AM

Dear Friends,

I need to change the some configuration in httpd.conf file with out affect any current status of http service. please say that command

bathory · 01-27-2011, 12:46 AM

Hi,

You can use either

Code:

apachectl graceful

or

Code:

httpd -k graceful

Regards

kirukan · 01-27-2011, 02:44 AM

Is graceful restart more efficient mechanism in heavy loaded webservers? Please anybody share your experience which logrotate mechanism(cronolog or logrotate with apache reload and graceful restart) is best in heavy loaded apache servers.

As i understand about graceful, its drop all connections at once and reload also cause problem like apache stopping and not starting (in some situation).
Which the most effective way to handle apache logroate??

This discussion may be more useful at this point that's why i interrupt this thread. if it's violate LQ rules please excuse me

bathory · 01-27-2011, 03:42 AM

Hi kirukan

No, that's what restart is doing.
From apache documentation:

Quote:

graceful
Gracefully restarts the Apache httpd daemon. If the daemon is not running, it is started. This differs from a normal restart in that currently open connections are not aborted. A side effect is that old log files will not be closed immediately. This means that if used in a log rotation script, a substantial delay may be necessary to ensure that the old log files are closed before processing them. This command automatically checks the configuration files as in configtest before initiating the restart to make sure Apache doesn't die. This is equivalent to apachectl -k graceful.

Actually it sends a SIGUSR1 for a restart. The USR1 or
graceful signal causes the parent process to advise the
children to exit after their current request (or to exit
immediately if they're not serving anything). The parent
re-reads its configuration files and re-opens its log files.
As each child dies off the parent replaces it with a child
from the new generation of the configuration, which begins
serving new requests immediately.