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    Alexander Schulz

    @borzel

    XCP-ng Center Team 🏚️

    Main IT-Admin in Germany (Saxony) for a company group

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    borzel Unfollow Follow
    Top contributor 💪 XCP-ng Center Team 🏚️ Admin 🧑‍💻

    Best posts made by borzel

    • XCP-ng Center 8.0.0 released

      Your most loved* basic client XCP-ng Center 8.0.0 is now released:

      ♥ https://github.com/xcp-ng/xenadmin/releases/tag/v.8.0.0 ♥

      963d3bb3-719c-4508-9de9-866187d6b238-grafik.png

      f9a2c7a4-e1dd-44d5-876f-ae9e6fb9f7f4-grafik.png

      *of course XenOrchestra is the most loved advanced client 😉

      posted in News
      borzel
      borzel
    • What is what: XCP-ng, XCP-ng Center, XenOrchestra, XOA, Vates

      Hello together,

      to avoid more and more confusion about the pieces of the XCP-ng Universe, I'll try to describe what is what.

      The Hypervisor, the Host, the Virtualisation Server: XCP-ng

      This is the thing you install on bare hardware, it consists of:

      • the XEN kernel
      • Dom0 - the management domain (it's basicaly a highly custom CentOS with drivers, various services and some glue logic)
      • DomU - the VMs, the virtual machines, the things you virtualize
      • Love ♥

      It's exact the same concept like CITRIX XenServer or CITRIX Hypervisor. XCP-ng is derived from them. Something like a fork, but not so hard.

      • issues: https://github.com/xcp-ng/xcp/issues

      The basic management software, the windows client, the thing with the tree: XCP-ng Center

      • community project
        • issues: https://github.com/xcp-ng/xenadmin/issues
        • download: https://github.com/xcp-ng/xenadmin/releases
      • some help from Vates

      It's derived from CITRIX XenCenter.

      The advanced management software, the web client, the backup solution and more: XenOrchestra

      • commercial product from Vates
      • community driven
        • issues: https://github.com/vatesfr/xen-orchestra/issues
      • can be build from sources with all pro features enabled
        • https://xen-orchestra.com/docs/from_the_sources.html
      • only community support

      It's not derived from anything (as far as I know).

      The ready to use XenOrchestra, the appliance: XOA

      • single line to install on XCP-ng
      • can be licenced with pro features and pro support from Vates
      • is a ready to use VM

      The company behind: Vates

      Olivier Lambert and his company Vates startet all the jazz. They provide pro support for XCP-ng (the host) and XenOrchestra. They help to sign XCP-ng Center and the XCP-ng Windows Client Tools (and drivers) with an proper EV certificate.

      posted in News
      borzel
      borzel
    • XCP-ng Center 20.04.00 released

      Happy Easter! 🐰 🐤 🥚

      I hope you are all well at 🏠 and in good condition.

      🎆 https://github.com/xcp-ng/xenadmin/releases/tag/v20.04.00.32 🎆

      Fixes: https://github.com/xcp-ng/xenadmin/issues/184

      cocoon created this issue in xcp-ng/xenadmin

      closed Bug memory tab with dynamic memory missing url #184

      posted in News
      borzel
      borzel
    • XCP-ng Center 8.0.1 released

      🎆 it's now released! https://github.com/xcp-ng/xenadmin/releases/tag/v8.0.1.26 🎆

      posted in News
      borzel
      borzel
    • Linux Magazin talks about us

      https://www.linux-magazin.de/ausgaben/2020/03/xcp-ng/

      posted in News
      borzel
      borzel
    • XCP-ng Center: Future

      Hello Community!

      I hope you all had a good start into year 2020!

      I decided to change the way I release XCP-ng Center due the lack of other people participating in development. In future I will only release builds based on the master branch of CITRIX XenCenter (https://github.com/xenserver/xenadmin).

      Pro:

      • fixes from CITRIX xenadmin (aka XenCenter) master branch will be faster present in our releases
      • only one upstream branch to merge from; reduces the hassle to merge/cherry pick from/to 3 different branches (like 7.6, 8.0, master).

      Contra:

      • hmm... maybe there is none 🙂

      Within this change the version schema will also change. I think I use the YEAR.MONTH schema, so the next release will be "XCP-ng Center 2020.01".

      The first step in this direction is the pre-relase of the current nightly build 99.99.99.27: https://github.com/xcp-ng/xenadmin/releases/tag/v99.99.99.27

      posted in News
      borzel
      borzel
    • XCP-ng Center 20.04.01 for XCP-ng 8.2

      The "quick" release of XCP-ng Center 20.04.01 for compatibility with XCP-ng 8.2 ist alive:

      🎆 https://github.com/xcp-ng/xenadmin/releases/tag/v20.04.01.33 🎆

      posted in News
      borzel
      borzel
    • RE: XCP-ng 8.2.0 beta now available!

      @stormi Heyho! I'll try to find some time. But first I'll setup an XCP-ng 8.2 host 🙂

      posted in News
      borzel
      borzel
    • RE: [Windows Guest Tools] Cleaner Tool

      If you have problems to install Citrix(TM) or XCP-ng Windows Guest Tools, please try the first working version of this tool:

      🎆 https://schulzalex.de/builds/xcp-ng/XCP-ng-Windows-Guest-Tools-Cleaner_alpha_1.0.0.0.zip 🎆

      Good

      2e40afde-6030-47dc-afbe-f6f17153c23b-grafik.png

      Bad

      c89d5bf1-7166-4291-8a0e-f9c86439f245-grafik.png

      posted in Development
      borzel
      borzel
    • [Windows Guest Tools] Cleaner Tool

      Hello all together!

      I started to build a little tool, that should help to find the problems before installing/updating the Guest Tools in a Windows VM. For now its only a first start, but it can grow to a very usefull tool.

      Any constructive help or hint is very welcome!

      Later (so my plans) it should be a part of a new Guest Tools Installer.

      Issue: https://github.com/xcp-ng/xcp/issues/152
      GIT repository: https://github.com/xcp-ng/win-installer-ng

      borzel created this issue in xcp-ng/xcp

      open Windows guest tools pre-install checker #152

      posted in Development
      borzel
      borzel

    Latest posts made by borzel

    • RE: Alert: Control Domain Memory Usage

      @r1

      [02:27 xen19 ~]# uname -a
      Linux xen19 4.19.142 #1 SMP Tue Nov 3 11:27:36 CET 2020 x86_64 x86_64 x86_64 GNU/Linux
      
      [02:30 xen19 ~]# yum list installed | grep kernel
      kernel.x86_64                   4.19.19-7.0.9.1.xcpng8.2    @xcp-ng-updates     
      kernel-alt.x86_64               4.19.142-1.xcpng8.2         @xcp-ng-base 
      

      memory graph so far:

      ca10cb2d-fbfb-48b0-8edd-237fc56ff38f-grafik.png

      looking very good!!!

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      @r1 our complete setup:

      [FreeNAS NFS] <----shared-storage----> [Pool of 2 servers (xen22 + xen23)] ----XAPI---> [XO from sources] -----remote----> [FreeNAS NFS]

      All [servers] are real hardware servers, no VMs involved.

      Same chain of servers for xen19, execpt there are more pool members (and VMs).

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      @stormi I'm not complete sure if I did the iso upgrade or not... 😕

      But it's a good idea to reinstall the poolmaster from scratch...

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      Good news from the kernel-alt (server xen19): No RAM leaks so far 🙂

      b6ca8f80-8bef-4dfe-9064-5823f6aba907-grafik.png

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      @stormi on server xen19 I think so, on server xen22 I'm not sure

      I looked more close on my memory graphs and saw, that the memory baseline increases every night:

      "bump" every day:
      ca76f2fc-89aa-49fb-aa33-5e568070fbc4-grafik.png

      closer look in week 53:
      692a8c57-f2b5-4284-8cab-be3a045fb179-grafik.png

      Dez 31. - Jan 01.
      8a267bb0-97c3-481c-9da9-bd031093496e-grafik.png

      Our Backups run from 18.00 till 3 or 4 in the morning (including coalesce).

      --> maybe the heavy IO load leads to memory leaks "somewhere"?

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      @r1 yes, ever line "installed" in yum.log is an Upgrade from XCP-ng.
      Problems started with XCP-ng 8.x

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      @r1 in general we do not restart many of our VMs, its all very static, only manual operated

      xen19 is now rebootet (we need it in production) with kernel-alt - highest id is currently 4

      xen22 (pool master of another affected pool) - highest id is curently 30

      memory graphs of xen22
      61ef0b14-6ec2-46ea-96e6-6efbd30eb528-grafik.png

      yum.log of xen22 (Problem here also after installing kernel-4.19.19-6.0.10.1.xcpng8.1.x86_64)

      yum.log.5.gz:Dec 19 00:52:47 Updated: kernel-4.4.52-4.0.12.x86_6
      yum.log.3.gz:Nov 08 10:07:40 Updated: kernel-4.4.52-4.0.13.x86_64
      yum.log.1:Apr 10 20:31:01 Installed: kernel-4.19.19-6.0.10.1.xcpng8.1.x86_64
      yum.log.1:Aug 31 23:10:50 Updated: kernel-4.19.19-6.0.11.1.xcpng8.1.x86_64
      yum.log.1:Dec 11 18:00:54 Updated: kernel-4.19.19-6.0.12.1.xcpng8.1.x86_64
      yum.log.1:Dec 19 12:52:00 Updated: kernel-4.19.19-6.0.13.1.xcpng8.1.x86_64
      yum.log.1:Dec 19 12:54:13 Updated: kernel-4.19.19-7.0.9.1.xcpng8.2.x86_64
      
      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      looked in my yum.log on this server (xen19):

      our problems startet exactly since "Apr 10 18:10:29 Installed: kernel-4.19.19-6.0.10.1.xcpng8.1.x86_64"

      yum.log.4.gz:Oct 03 17:35:54 Installed: kernel-4.4.52-4.0.7.1.x86_64
      yum.log.4.gz:Nov 20 18:29:29 Updated: kernel-4.4.52-4.0.12.x86_64
      yum.log.2.gz:Oct 10 20:19:31 Updated: kernel-4.4.52-4.0.13.x86_64
      yum.log.1:Apr 10 18:10:29 Installed: kernel-4.19.19-6.0.10.1.xcpng8.1.x86_64
      yum.log.1:Jul 07 17:46:34 Updated: kernel-4.19.19-6.0.11.1.xcpng8.1.x86_64
      yum.log.1:Dec 10 17:59:07 Updated: kernel-4.19.19-6.0.12.1.xcpng8.1.x86_64
      yum.log.1:Dec 19 13:53:39 Updated: kernel-4.19.19-6.0.13.1.xcpng8.1.x86_64
      yum.log.1:Dec 19 13:55:20 Updated: kernel-4.19.19-7.0.9.1.xcpng8.2.x86_64
      yum.log:Jan 18 17:35:07 Installed: kernel-alt-4.19.142-1.xcpng8.2.x86_64
      
      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      I noticed in my monitoring graphs, that since we have this issue, the SWAP is not used like before the issue:

      b07111c8-7c21-4351-85fa-2acc7030bb2d-grafik.png

      posted in Compute
      borzel
      borzel
    • RE: Alert: Control Domain Memory Usage

      We also have an issue with growing control domain memory:

      • XCP-ng 8.2
      • NFS shared storage
      • the poolmaster (xen19 is one of them) are more affected than pool members

      d1fac6d1-997b-4a7c-898c-d4a9c398b566-grafik.png

      Today I install the alternate kernel on one of our poolmaster to see if that resolves our issue.

      posted in Compute
      borzel
      borzel