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    Proxmox, Mirantis Openstack, KVM, oh my

    Scheduled Pinned Locked Moved IT Discussion
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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.

      1 Reply Last reply Reply Quote 0
      • 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.

          1 Reply Last reply Reply Quote 0
          • 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.

                1 Reply Last reply Reply Quote 0
                • 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.

                        1 Reply Last reply Reply Quote 0
                        • 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.

                                  1 Reply Last reply Reply Quote 0
                                  • 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.

                                    1 Reply Last reply Reply Quote 0
                                    • 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.

                                      1 Reply Last reply Reply Quote 0
                                      • 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.

                                        Maybe now we will see a decent *nix version of it. Although the CLI commands are pretty easy to use.

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

                                          @coliver would be awesome. Someone needs to get on that. Although the XAPI has been there for a long time and no one has made the interface that we want yet.

                                          Really running on Linux is pointless, what is needed is a web interface. Anything else is just silly.

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

                                            @scottalanmiller said:

                                            @coliver would be awesome. Someone needs to get on that. Although the XAPI has been there for a long time and no one has made the interface that we want yet.

                                            Really running on Linux is pointless, what is needed is a web interface. Anything else is just silly.

                                            Xen Orchestra is around but they have a silly limitation on the number of hosts it can manage.

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