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Date: Thu, 2 Jun 2005 09:20:54 +0200
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 <FDD5D99066749040AF9098A720E989771F0689@CIWMEXZSA0E.ex.ordersx.org>
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Thread-Topic: [users@httpd] Newbie Qu - details of graceful restart on Windows
Thread-Index: AcVmxZM5HyQ5NvnxSyuuLeqBppsUZQAfMWmA
From: "Boyle Owen" <Owen.Boyle@swx.com>
To: <users@httpd.apache.org>
Subject: RE: [users@httpd] Newbie Qu - details of graceful restart on Windows

> -----Original Message-----
> From: dhay@lexmark.com [mailto:dhay@lexmark.com]
> Sent: Mittwoch, 1. Juni 2005 18:17
> To: users@httpd.apache.org
> Subject: [users@httpd] Newbie Qu - details of graceful restart on
> Windows

Can you do a graceful restart on Windows?

On Unix, a graceful corresponds to sending a USR1 signal to the apache =
parent. This causes the extant daemons to exit when they're finished and =
all new daemons to come up with the new config. All the apache control =
methods use signals (restart =3D HUP, stop =3D TERM).=20

On Windows, these signals don't exist and apache is controlled as a =
service. You have "apache -k restart" but I'm not sure if that =
corresponds to a HUP or USR1. Either try it and let us know, or maybe =
some Windows guru has a clearer idea.

Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.=20

>=20
>=20
>=20
> Hi,
>=20
> I'm quite new to Apache, and trying to understand what a=20
> graceful restart
> on Windows actually does.  I'm running Apache with mod_jk=20
> with multiple
> Tomcats.  When we add a new Tomcat, I would like to update the
> workers.properties file and then restart Apache so the=20
> changes take effect.
>=20
> Would anybody be able to explain exactly what happens, or point me to
> documentation that already exists?  I've searched the mailing=20
> lists and
> googled a lot, with not much detail.
>=20
> My main concern is whether its possible for requests to be=20
> dropped during
> this process, and whether session affinity is maintained - eg=20
> if a browser
> is already talking to a certain Tomcat, will it continue to=20
> talk to exactly
> that one after the restart?
>=20
> Many thanks,
>=20
> David
>=20
>=20
>=20
>=20
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>=20
>=20
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