-Original Message-
From: SAILESH KRISHNAMURTI, BLOOMBERG/ 731 LEXIN
[mailto:skrishnam...@bloomberg.net]
Sent: Thursday, June 18, 2009 3:42 PM
To: USERS@httpd.apache.org
Subject: [us...@httpd] How to detect a non-graceful restart of Apache
Hi, I have a requirement wherin application owners would like
to be notified if apache is restarted non-gracefully, since
there might be impact to user sessions etc... Is there any
way to detect and report this, hopefully without compiling
additional modules? thanks
The simplest way is probably to monitor the error_log (eg, with a
perl-script running under cron). If there is a stop; you get a SIGTERM
in the log. For a restart; there is a SIGHUP. For a graceful; no
signals, just a message.
Alternatively, if you have mod_server_status, you could poll it. The
server uptime is reset to zero if there is a stop/start or restart, but
keeps ticking if there is a graceful.
Rgds,
Owen Boyle
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