Date: Wed, 27 Jan 2016 11:35:38 +0100 From: Jan Bramkamp <crest@rlwinm.de> To: freebsd-hackers@freebsd.org Subject: Re: syslogd(8) with OOM Killer protection Message-ID: <56A89D7A.8080906@rlwinm.de> In-Reply-To: <CAAoTqfuVr_iXR=_AaGXTTGs20sfWeH76m3yDC-hvAL4kB9iKNA@mail.gmail.com> References: <CAOfEmZgzL2Ldu53CeSsKcUe00H1VAukhEopSUmpUK0=XAhsD1A@mail.gmail.com> <56A86D91.3040709@freebsd.org> <20160127072850.GG35911@ivaldir.etoilebsd.net> <CAAoTqfuVr_iXR=_AaGXTTGs20sfWeH76m3yDC-hvAL4kB9iKNA@mail.gmail.com>
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On 27/01/16 09:27, Pavel Timofeev wrote: > 2016-01-27 10:28 GMT+03:00 Baptiste Daroussin <bapt@freebsd.org>: >> On Wed, Jan 27, 2016 at 02:11:13AM -0500, Allan Jude wrote: >>> On 2016-01-27 01:21, Marcelo Araujo wrote: >>>> Hi guys, >>>> >>>> I would like to know your opinion about this REVIEW[1]. >>>> The basic idea is protect by default the syslogd(8) against been killed by >>>> OOM with an option to disable the protection. >>>> >>>> Some people like the idea, other people would prefer something more global >>>> where we can protect any daemon by the discretion of our choice. >>>> >>>> Thoughts? >>>> >>>> >>>> [1] https://reviews.freebsd.org/D4973 >>>> >>>> >>>> Best, >>>> >>> >>> I do like the idea of generalizing it, say via rc.subr >>> >>> So you can just do: >>> >>> someapp_protect=YES (and maybe syslogd has this enabled by default in >>> /etc/defaults/rc.conf) and it prefixes the start command with protect -i. >>> >> I do support that idea, I think it is will be useful to more people. >> >> Bapt > > I'm one that people. I find this generilized way very usefull. > I have least a couple of daemons that it'd never wanted to be OOMed on > my machines. Besides syslogd, I'd protect sshd and even crond in some > cases. I would prefer to implement the a flag keeping cron (and all other base system daemons) from double-forking and run it under a process supervisor like daemontools.
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