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    Proxmox, Mirantis Openstack, KVM, oh my

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    • scottalanmillerS
      scottalanmiller @Kelly
      last edited by

      @Kelly said:

      Hmm, I had read some things that were very critical of Xen in general because of the way it has been controlled by the larger players and made mostly to suit their needs. Perhaps I need to add it back in to my list of options.

      FUD. The KVM crowd (IBM and RH specifically) have worked like crazy to discredit Xen because KVM doesn't make much sense with Xen doing so well. Both Xen and KVM are owned by the Linux Foundation. But IBM and RH have their money bet on KVM, so they work hard to promote it.

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      • coliverC
        coliver @Kelly
        last edited by

        @Kelly said:

        @scottalanmiller 98% Linux.

        Xen is the answer here then.

        1 Reply Last reply Reply Quote 1
        • scottalanmillerS
          scottalanmiller @Kelly
          last edited by

          @Kelly said:

          @scottalanmiller 98% Linux.

          Then Xen for sure!

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          • scottalanmillerS
            scottalanmiller @Kelly
            last edited by

            @Kelly said:

            Hmm, I had read some things that were very critical of Xen in general because of the way it has been controlled by the larger players and made mostly to suit their needs. Perhaps I need to add it back in to my list of options.

            Funny, that's actually a concern with KVM, rather than Xen. Xen was academic and purely open source. KVM was built to support the big corporate players. KVM is guided by enormous companies, Xen mostly by the cloud players.

            Xen is what powers Amazon, Rackspace and IBM clouds. KVM powers Digital Ocean and Vultr.

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            • KellyK
              Kelly
              last edited by

              So Xen or community XenServer? Is there a difference?

              coliverC scottalanmillerS 2 Replies Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller @Kelly
                last edited by

                @Kelly said:

                @scottalanmiller said:

                If you are going to go cloud, of course OpenStack is where to start. Once you go there, you have to choose your hypervisor. Xen and KVM are the choices there. Both work fine.

                Any thoughts on Mirantis vs other packages vs vanilla OpenStack?

                Have not played enough to say. I'd be likely to look at Ubuntu and Suse packages.

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                • coliverC
                  coliver @Kelly
                  last edited by

                  @Kelly said:

                  So Xen or community XenServer? Is there a difference?

                  Community XenServer has a fantastic management console as well as a ton of CLI commands to make management easier. I'm still not sure I understand the difference completely no matter how many times @scottalanmiller explains it.

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                  • scottalanmillerS
                    scottalanmiller @Kelly
                    last edited by

                    @Kelly said:

                    So Xen or community XenServer? Is there a difference?

                    Yes. One is a kernel, one is a distro.

                    Xen is just the hypervisor a la Linux. XenServer is the official distro made by Citrix and Xen themselves that has everything that you need to actually use Xen a la CentOS.

                    So Xen is to Linux as XenServer is to CentOS.

                    coliverC 1 Reply Last reply Reply Quote 0
                    • scottalanmillerS
                      scottalanmiller
                      last edited by

                      XenServer is Xen + CentOS Dom0 + XAPI + installer + some extra tools.

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                      • coliverC
                        coliver @scottalanmiller
                        last edited by

                        @scottalanmiller said:

                        @Kelly said:

                        So Xen or community XenServer? Is there a difference?

                        Yes. One is a kernel, one is a distro.

                        Xen is just the hypervisor a la Linux. XenServer is the official distro made by Citrix and Xen themselves that has everything that you need to actually use Xen a la CentOS.

                        So Xen is to Linux as XenServer is to CentOS.

                        Ah, this makes sense I was trying to articulate this in my head and couldn't. Thanks for the clarification.

                        1 Reply Last reply Reply Quote 1
                        • KellyK
                          Kelly
                          last edited by

                          So what is it about XenServer that makes it preferred over KVM particularly for Linux workloads?

                          scottalanmillerS 1 Reply Last reply Reply Quote 0
                          • scottalanmillerS
                            scottalanmiller @Kelly
                            last edited by

                            @Kelly said:

                            So what is it about XenServer that makes it preferred over KVM particularly for Linux workloads?

                            Performance. KVM works hard to make Windows fast. Xen works hard to make Linux fast.

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                            • KellyK
                              Kelly
                              last edited by

                              Great, thanks for all the input. I appreciate it.

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                              • dafyreD
                                dafyre
                                last edited by

                                Just so I'm clear on the XenServer stuff... XenCenter (the management tool that is equivalent to VMware's vSphere) has also been open sourced, right?

                                coliverC scottalanmillerS 2 Replies Last reply Reply Quote 0
                                • coliverC
                                  coliver @dafyre
                                  last edited by

                                  @dafyre said:

                                  Just so I'm clear on the XenServer stuff... XenCenter (the management tool that is equivalent to VMware's vSphere) has also been open sourced, right?

                                  I don't think so. It is included in the XenServer package but wasn't one of the tools that was open sourced.

                                  scottalanmillerS 1 Reply Last reply Reply Quote 0
                                  • KellyK
                                    Kelly
                                    last edited by

                                    According to http://xenserver.org/partners/developing-products-for-xenserver/21-xencenter-development/88-xc-dev-home.html it appears to be.

                                    coliverC scottalanmillerS 3 Replies Last reply Reply Quote 0
                                    • scottalanmillerS
                                      scottalanmiller @dafyre
                                      last edited by

                                      @dafyre said:

                                      Just so I'm clear on the XenServer stuff... XenCenter (the management tool that is equivalent to VMware's vSphere) has also been open sourced, right?

                                      No, it is free but not open source.

                                      1 Reply Last reply Reply Quote 0
                                      • scottalanmillerS
                                        scottalanmiller @coliver
                                        last edited by

                                        @coliver said:

                                        @dafyre said:

                                        Just so I'm clear on the XenServer stuff... XenCenter (the management tool that is equivalent to VMware's vSphere) has also been open sourced, right?

                                        I don't think so. It is included in the XenServer package but wasn't one of the tools that was open sourced.

                                        Citrix does not own it to open it.

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                                        • coliverC
                                          coliver @Kelly
                                          last edited by

                                          @Kelly said:

                                          According to http://xenserver.org/partners/developing-products-for-xenserver/21-xencenter-development/88-xc-dev-home.html it appears to be.

                                          Oh, that's news good to know.

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                                          • scottalanmillerS
                                            scottalanmiller @Kelly
                                            last edited by

                                            @Kelly said:

                                            According to http://xenserver.org/partners/developing-products-for-xenserver/21-xencenter-development/88-xc-dev-home.html it appears to be.

                                            Oh neat, that is new. Maybe they finally got everything cleared to open it.

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