Date: Fri, 25 Apr 2014 01:05:27 -0400 From: Alejandro Imass <aimass@yabarana.com> To: Boris <borisbsd@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: FBSD jail versus VMWare? What services do YOU run in a jail? Message-ID: <CAHieY7T7jYKCYewe1rnmW3QGHpBeowugS18TGUijGK-6hg2h_g@mail.gmail.com> In-Reply-To: <CAJYdwgUq=2s1sL=1EdEQYs=3Gv2ikrSP34kpvtQH%2BfNSedPkHA@mail.gmail.com> References: <CAFS4T6apJ30_WPrV3-azuwr5LHFE8htEk5a_xqe7DRZ7Wy5XqQ@mail.gmail.com> <53580129.5010909@ssimicro.com> <CAHieY7SViGaVXXK2CxQEuiTUZMA4EfrUVn_BdB-PHvoJiUjzaA@mail.gmail.com> <CAJYdwgUq=2s1sL=1EdEQYs=3Gv2ikrSP34kpvtQH%2BfNSedPkHA@mail.gmail.com>
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On Fri, Apr 25, 2014 at 12:02 AM, Boris <borisbsd@gmail.com> wrote: > Hi Alejandro, > > Can you move a 'live' jail from server to server? Not that I am aware at least not with EZJail The archive method needs the jail to be down AFAIK. > I have never tried but some people like the vMotion option from VMware and > for having tried it, it's quite impressive in action. > Each has it's advantages IMO. Pseudo-virtulization like Jails give you the advantage of little overhead, less resources, and IMHO nothing beats running on the real HW. Besides, VMWare costs a wagon load of money whilst FreeBSD Jails are basically free in license terms at least. Honestly, when I said "just like VMWare" I wasn't trying to actually compare, but rather illustrating that with EZJail you can get many of the benefits/easiness of use of VMWare, VirtualBox and alike, not particularly VMWare. EZJails archive and restore, flavours, and many other features of ezjail-admin add a lot of value on top of the already great Jail system. > For the rest, I used jails a long long time ago, I guess Marketing was not > behind jails the same way it has been behind VMware products although, to be > fair, GSX and ESX have be out there for ages...there has been a lot more > press since ESXi4.something and 5 > Actually, I don't think they are really comparable as in apples to apples without a clear set of constraints. In the OP's original question, Jails could actually provide a solution to an overly bloated pure virtualization environment, but its really depends on the specific application IMO. In our case, we just need to make the most of out of limited budget and Jails allow us to squeeze every bit out of our servers. We run literally dozens and dozens of Jails per server and pay $2-4K per server per year. I don't think we could pull that off with VMWare or any cloud env like AWS. Best, Alejandro Imass
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