Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 06 Aug 2009 13:17:51 -0400
From:      Michael Scheidell <scheidell@secnap.net>
To:        stef@memberwebs.com
Cc:        freebsd-jail@FreeBSD.org
Subject:   Re: crontab hanging won't die on SIGTERM in jail
Message-ID:  <4A7B103F.6040400@secnap.net>
In-Reply-To: <20090806161117.90CA23039807@mx.npubs.com>
References:  <4A7AE4D4.2090600@secnap.net> <20090806161117.90CA23039807@mx.npubs.com>

next in thread | previous in thread | raw e-mail | index | archive | help


Stef Walter wrote:
> Michael Scheidell wrote:
>   
>> anyone having problems during an in jail shutdown with crontab hanging?
>> I have seen this in 6.4 and 7.1, on i386 and amd64.
>> I don't remember problems with 6.3
>>     
>
> I see this same problem in certain jails. A jail that has this problem
> does it consistently, jails without the problem (on the same machine,
> same FreeBSD userland/kernel) don't have the problem consistently.
>
> In these cases, sending cron the TERM signal just doesn't do anything.
>
> You have to wait for at least one minute after jail startup for cron to
> get into this unTERMable state.
>
>   
YOU ARE RIGHT!  it is intermentent.
Try this (for me) on those boxes (before you try /etc/rc.d/cron restart:

echo 'sig_stop=SIGKILL' > /etc/rc.conf.d/cron

you arn't running ezjail, are you? could there be anything in ezjail 
that would do this?

yes:
boot someone in jail.
/etc/rc.d/cron restart
or killall -SIGTERM cron works.

wait (for what?).  ??  controlling terminal to quit? the first cron parse?

some time (I went to lunch) and guess what. SIGTERM won't stop it.

-- 
Michael Scheidell, CTO
Phone: 561-999-5000, x 1259
 > *| *SECNAP Network Security Corporation

    * Certified SNORT Integrator
    * 2008-9 Hot Company Award Winner, World Executive Alliance
    * Five-Star Partner Program 2009, VARBusiness
    * Best Anti-Spam Product 2008, Network Products Guide
    * King of Spam Filters, SC Magazine 2008


_________________________________________________________________________
This email has been scanned and certified safe by SpammerTrap(r). 
For Information please see http://www.secnap.com/products/spammertrap/
_________________________________________________________________________
   



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4A7B103F.6040400>