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From Ralph Corderoy <ra...@inputplus.demon.co.uk>
Subject Re: documentation/6767: Affect of HUP on Child Processes Not Documented.
Date Thu, 02 Nov 2000 23:10:02 GMT
The following reply was made to PR documentation/6767; it has been noted by GNATS.

From: Ralph Corderoy <ralph@inputplus.demon.co.uk>
To: Tony Finch <fanf@apache.org>
Cc: apbugs@apache.org
Subject: Re: documentation/6767: Affect of HUP on Child Processes Not Documented. 
Date: Thu, 02 Nov 2000 23:01:14 +0000

 Hi Tony,
 
 > I suggest you file a bug with RedHat.
 
 Have done.
 
 Ralph.
 
 
 > From:    bugzilla@redhat.com
 > Subject: [Bug 20256] New - logrotate sends a HUP to all Apache httpds.
 > To:      ewt@redhat.com, ralph@inputplus.demon.co.uk, dlt@redhat.com
 > Date:    Thu, 2 Nov 2000 17:57:45 -0500
 > 
 > http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=20256
 > 
 > --- shadow/20256        Thu Nov  2 17:57:45 2000
 > +++ shadow/20256.tmp.19668      Thu Nov  2 17:57:45 2000
 > @@ -0,0 +1,48 @@
 > +Bug#: 20256
 > +Product: Red Hat Linux
 > +Version: 6.1
 > +Platform: i386
 > +OS/Version: Linux
 > +Status: NEW   
 > +Resolution: 
 > +Severity: normal
 > +Priority: normal
 > +Component: logrotate
 > +AssignedTo: ewt@redhat.com                            
 > +ReportedBy: ralph@inputplus.demon.co.uk               
 > +QAContact: dlt@redhat.com
 > +URL: 
 > +Cc: ralph@inputplus.demon.co.uk
 > +Summary: logrotate sends a HUP to all Apache httpds.
 > +
 > +Hi,
 > +
 > +Having entered into discussion with the Apache folks it turns out that they
 > +clearly state that signals should only be sent to the parent process,
 > +not all the child servers.  logrotate sends a HUP to all httpds that
 > +are running;  this is wrong and gives undefined behaviour.
 > +
 > +From:    Tony Finch <fanf@apache.org>
 > +Subject: Re: documentation/6767: Affect of HUP on Child Processes Not
 > +Documented.
 > +To:      apbugs@apache.org
 > +Date:    Thu, 2 Nov 2000 18:36:58 +0000
 > +
 > +Ralph Corderoy <ralph@inputplus.demon.co.uk> wrote:
 > +>
 > +>Thanks for the prompt reply.
 > +>
 > +>Perhaps a warning that the current behaviour is unsupported
 > +>implementation detail would stop Linux distributors, like Red Hat, from
 > +>using `killall -HUP httpd' in their logrotate configuration.
 > +
 > +We do: see http://www.apache.org/docs/stopping.html which says:
 > +
 > +:You will notice many httpd executables running on your system, but you
 > +:should not send signals to any of them except the parent, whose pid is
 > +:in the PidFile. That is to say you shouldn't ever need to send signals
 > +:to any process except the parent.
 > +
 > +I suggest you file a bug with RedHat.
 > +
 > +Tony.

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