Ezra! Thanks for the follow up! I was just looking at the xensource.com site and found a somewhat buried Xen 3.0 that is open source and doesn't have the limitations of the three options on the home page. Is this the version I should be looking at?
Raul ----- Original Message ----- From: "Ezra Zygmuntowicz" <[EMAIL PROTECTED]> To: <rubyonrails-deployment@googlegroups.com> Sent: Friday, February 09, 2007 12:44 PM Subject: [Rails-deploy] Re: OpenVZ versus Xen or others > > Raul- > > I'm not sure what makes you think you need the commercial Xen for > anything you mention. We run the open source Xen on boxes with 16Gig+ > Ram and 4 processor cores. There is no limitation to the open source > Xen afaik it can easily address 64Gigs of ram and many processors. > > -Ezra > > > On Feb 9, 2007, at 9:26 AM, Raul wrote: > >> >> OK thanks everyone! I actually got CentOS 4.4 running flawless on >> one of my >> servers and everything looked great. Then I followed the OpenVZ >> install >> instructions and it worked fine. I have 3 VPS's running on this >> machine. >> And then, suddenly remembering what a linux noob I am, I wondered >> "What >> now?". :) >> >> I could see that I have 3 vps each with their own IPs etc but couldn't >> figure out how I was then going to install my apps on each one >> etc. I guess >> I really gotta get my head around linux before anything else. >> >> It sounds like I'll be trying XenExpress to see how it works and >> determine >> if I'll need to be buying Xen commercial to go forward (if I use >> Xen I need >> the multiprocessor and 16gb ram support). When you get right down >> to it I >> really just want Apache or Nginx running with as many mongrels >> behind it as >> reasonable. I did set up a successful development server on >> Windows with >> Apache 2.2 and 5 mongrel services that seems to run fine, but I >> understand >> that for large scale performance of Rails and MySQL (and the >> ability ot >> automate deployment with Capistrano) that I'd be better off to go >> linux. >> Not to mention that I'll need about $7000 in Microsoft licenses to >> go the >> Windows route!! >> >> Thanks again, I'll keep pushing on and report back as I figure >> things out. >> >> Appreciated! >> >> Raul >> >> >> ----- Original Message ----- >> From: "Paul Stadig" <[EMAIL PROTECTED]> >> To: "Deploying Rails" <rubyonrails-deployment@googlegroups.com> >> Sent: Friday, February 09, 2007 4:01 AM >> Subject: [Rails-deploy] Re: OpenVZ versus Xen or others >> >> >>> >>> I've had experience with both OpenVZ and Xen on with different >>> hosting >>> companies. The OpenVZ server we had with vpslink.com just would not >>> install Oracle XE. It was a problem with swap memory. The VPS at >>> vsplink didn't have any, and even though it had plenty of memory >>> Oracle would just crap out during install. I'm not sure if this is >>> related to some limitation with OpenVZ, but most Xen hosts I've seen >>> give you some swap, too. I even tried enabling my own swap, but it >>> just wouldn't work. >>> >>> My problems may have had more to do with the suckiness of Oracle than >>> anything else. Their install script for XE just directs error >>> messages to /dev/null, so I spent many hours trying to figure out why >>> the Oracle install "completed successfully" but was broken when I >>> tried to use it. >>> >>> You've been warned. >>> >>> >>> Paul >>> >>> On Feb 8, 11:52 pm, Robby Russell <[EMAIL PROTECTED]> >>> wrote: >>>> Ezra Zygmuntowicz wrote: >>>> >>>>> On Feb 8, 2007, at 7:30 PM, Robby Russell wrote: >>>> >>>>>> Raul wrote: >>>>>>> Hi again. All the great assistance so far has moved me >>>>>>> along. I'm >>>>>>> still a Linux noob but I've settled on CentOS 4.4 and have it >>>>>>> up and >>>>>>> running on a test server right now. I'll be testing two >>>>>>> scenarios: one >>>>>>> with Apache 2.2 and mod_proxy_balancer in front of a mongrel >>>>>>> cluster, >>>>>>> and another with NGINX in front of a mongrel cluster. >>>> >>>>>>> Remeber I have 3 machines with dual, dual-core Xeons and 16gb of >>>>>>> ram per >>>>>>> server and I want to maximize the performance, 146gb of >>>>>>> storage on >>>>>>> two >>>>>>> and a 73gb mirror with a 600gb raid 5 on the last one (I had >>>>>>> intended to >>>>>>> use the raid5 for the mySQL database). So I've looked into >>>>>>> virtualization a bit to see what the benefits might be and it >>>>>>> sounds >>>>>>> great. Now I noticed that XenExpress only supports up to 4gb of >>>>>>> ram and >>>>>>> I understand there may be a mySQL 4gb per process limit as >>>>>>> well. I >>>>>>> could buy commercial Xen but I found OpenVZ (open source >>>>>>> branch of >>>>>>> Virtuozzo) and it sounds pretty good too. I understand that each >>>>>>> solution accomplishes virtualization in different ways though >>>>>>> so any >>>>>>> guidance would be appreciated. >>>>>> We've been testing both of these solutions out. Xen is pretty >>>>>> rocking if >>>>>> you want to manage several different distros and such. Each >>>>>> virtual >>>>>> server has it's own kernel running with Xen... which will take >>>>>> more >>>>>> resources on the server than OpenVZ. There is also the overhead of >>>>>> managing that many more servers/kernels. >>>> >>>>>> OpenVZ shares it's kernel with each of the virtual machines and >>>>>> works >>>>>> more like a FreeBSD jail. One of the cool features that really >>>>>> caught >>>>>> our attention as we've been investigating tools for our new >>>>>> product is >>>>>> live migrations! >>>> >>>>>> "Delivery of the checkpointing and live migration functionality as >>>>>> part >>>>>> of OpenVZ brings a capability that no other open source operating >>>>>> system-level virtualization software offers. It allows system >>>>>> administrators to move virtual servers between physical servers >>>>>> without >>>>>> end-user disruption or the need for costly storage capacity." >>>> >>>>>> http://openvz.org/news/announcements/kernel-2.6.9-stable-20061114 >>>> >>>>> Ummm... Xen can do this too. >>>> >>>> "the more you know..." (tm) >>>> >>>> I'll look into that more. >>>> >>>> >>>> >>>>>> ..pretty cool, huh? >>>> >>>>> definitely cool, to be able to move a whole VM from one host to >>>>> another without any down time is kick ass ;) >>>> >>>> Yeah, I'm also curious if OpenVZ will get accepted into the Linux >>>> kernel >>>> as mentioned here: >>>> >>>> *http://linux.slashdot.org/article.pl?sid=06/01/17/2251233 >>>> * and...http://rubyurl.com/2na >>>> >>>> Since they both approach things _slighty_ different, it's a good >>>> idea to >>>> consider the benefits of both before making a decision. >>>> >>>> I really _want_ to go the openvz route with a project we're >>>> working on, >>>> but xen keeps coming back to surprise me. >>>> >>>> Robby >>>> >>>> -- >>>> Robby Russellhttp://www.robbyonrails.com/http://www.planetargon.com/ >>> >>> >>>> >> >> >> > > > -- Ezra Zygmuntowicz > -- Lead Rails Evangelist > -- [EMAIL PROTECTED] > -- Engine Yard, Serious Rails Hosting > -- (866) 518-YARD (9273) > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Deploying Rails" group. 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