Date: Mon, 21 May 2012 19:09:27 -0300 From: Alex Moura <alexsm@gmail.com> To: Jamie <jamie@geniegate.com> Cc: Rick Macklem <rmacklem@uoguelph.ca>, Vincent Hoffman <vince@unsane.co.uk>, freebsd-current@freebsd.org, freebsd-chat@freebsd.org, Dag-Erling Sm??rgrav <des@des.no>, Vance Siemens <vance.siemens@gmail.com> Subject: Re: FreeBSD 10 prognostication... Message-ID: <CABPMKoXO4=DsumUtXf9GgOzMFm4UYMvuh6TEu_ju5YrWRo=DrQ@mail.gmail.com> In-Reply-To: <20120521184739.GA22790@mule.podro.com> References: <20120520170702.GY22790@mule.podro.com> <1120936952.633013.1337546532026.JavaMail.root@erie.cs.uoguelph.ca> <20120521035323.GZ22790@mule.podro.com> <868vglud1e.fsf@ds4.des.no> <20120521184739.GA22790@mule.podro.com>
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2012/5/21 Jamie <jamie@geniegate.com> > On Mon, May 21, 2012 at 10:57:33AM +0200, Dag-Erling Sm??rgrav wrote: > > No, they're not. VMWare, RHEV (KVM-based) etc. provide features such as > > seamless migration of virtual machines from one physical machine to > > another, automatic restart on a different physical server if one fails > > etc. that simply aren't possible with jails; and there are certain > > things you still can't run reliably / safely in jails - anything that > > relies on SysV IPC, for instance, such as PostgreSQL. > > True about the SysV, and I mostly agree about automatic failover. > > But I think the FreeBSD jail system is still the better model for how I > see these things being used (certainly the better *potential*). But yea, > not "quite" cloud. > > When coupled with something like rsync, they *almost* do the job. And for > a lot > of the current "VPS" applications, they do the job. > > But lets suppose you want proper redundancy and partitioned environments, > so, you put FreeBSD on a cloud, but partition your environments into jails. > > Now you have a cheap, low overhead way of doing logical partitioning and > you > still have a "cloud" with redundancy. > That'd fine if you are not taking in account other characteristics that make clouds, well, clouds, like: on-demand self-service, resource pooling, multi-tenancy and rapid elasticity. > (snip) > I threw jails out there because I personally consider them to be the > coolest > part of FreeBSD. > > Agreed that jails are cool and I would like very much to see a FreeBSD-based cloud implementation.
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