IT Solutions Technology Blog

XenServer 8 – gibt es in drei Varianten einmal die kostenlose Trial Edition die auf drei Hosts beschränkt ist hat aber ansonsten kaum Einschränkungen gegenüber den kostenpflichtigen Varianten. Die Standard Edition bietet die wesentlichen Features für die Virtualisierung auf beliebig vielen Hosts inklusive dem Verschieben laufender VMs ohne Unterbrechung und dem Management über die Windows XenCenter GUI. Die Premium Edition beherrscht einige weitere Features wie dynamisches Verteilen von Workloads GPU Virtualisierung und ein Tool das VMware vSphere Installationen auf XenServer umzieht

[19:18 xcp-ng-02 ~]# xsconsole

[19:43 xcp-ng-02 ~]# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Excluding mirror: updates.xcp-ng.org
* xcp-ng-base: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
* xcp-ng-updates: mirrors.xcp-ng.org
No packages marked for update
[19:43 xcp-ng-02 ~]#

[18:37 xcp-ng-02 ~]# xe host-list
uuid ( RO) : 868e5dd0-6432-4f10-81d0-3cc41119fa39
name-label ( RW): xcp-ng-02
name-description ( RW): Default install
[18:42 xcp-ng-02 ~]#

[18:42 xcp-ng-02 ~]# xe host-param-list uuid=868e5dd0-6432-4f10-81d0-3cc41119fa3 9 | grep version
API-version-major ( RO): 2
API-version-minor ( RO): 20
API-version-vendor ( RO): XenSource
API-version-vendor-implementation (MRO):
software-version (MRO): product_version: 8.3.0; product_ve rsion_text: 8.3; product_version_text_short: 8.3; platform_name: XCP; platform_v ersion: 3.4.0; product_brand: XCP-ng; build_number: cloud; git_id: 0; hostname: localhost; date: 20231212T15:46:40Z; dbv: 0.0.1; xapi: 23.25; xapi_build: 23.25. 0; xen: 4.13.5-10.51; linux: 4.19.0+1; xencenter_min: 2.20; xencenter_max: 2.20; network_backend: openvswitch; db_schema: 5.766
virtual-hardware-platform-versions (SRO): 0; 1; 2
[18:42 xcp-ng-02 ~]# xe host-param-list uuid=868e5dd0-6432-4f10-81d0-3cc41119fa39 | grep version
API-version-major ( RO): 2
API-version-minor ( RO): 20
API-version-vendor ( RO): XenSource
API-version-vendor-implementation (MRO):
software-version (MRO): product_version: 8.3.0; product_version_text: 8.3; product_version_text_short: 8.3; platform_name: XCP; platform_version: 3.4.0; product_brand: XCP-ng; build_number: cloud; git_id: 0; hostname: localhost; date: 20231212T15:46:40Z; dbv: 0.0.1; xapi: 23.25; xapi_build: 23.25.0; xen: 4.13.5-10.51; linux: 4.19.0+1; xencenter_min: 2.20; xencenter_max: 2.20; network_backend: openvswitch; db_schema: 5.766
virtual-hardware-platform-versions (SRO): 0; 1; 2
[18:42 xcp-ng-02 ~]#

XCP-ng 8.3 Beta 2 – the regular ISO is available here

https://mirrors.xcp-ng.org/isos/8.3/xcp-ng-8.3.0-beta2.iso

How to keep your XCP-ng system updated

[09:05 xcp-ng-01 ~]# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Excluding mirror: updates.xcp-ng.org
* xcp-ng-base: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
* xcp-ng-updates: mirrors.xcp-ng.org
xcp-ng-base/signature | 473 B 00:00
xcp-ng-base/signature | 3.0 kB 00:00 !!!
xcp-ng-updates/signature | 473 B 00:00
xcp-ng-updates/signature | 3.0 kB 00:00 !!!
No packages marked for update
[09:05 xcp-ng-01 ~]#

How to find XCP-ng host-uuid because for many xe commands on XCP-ng you have to use a host-uuid=<…>

[09:23 xcp-ng-01 ~]# xe host-list
uuid ( RO) : e754cbb9-7bfd-4659-9f34-03bca65443f0
name-label ( RW): xcp-ng-01
name-description ( RW): Default install
[09:45 xcp-ng-01 ~]#

[09:55 xcp-ng-01 ~]# xe host-param-list uuid=e754cbb9-7bfd-4659-9f34-03bca65443f0 | grep version
API-version-major ( RO): 2
API-version-minor ( RO): 16
API-version-vendor ( RO): XenSource
API-version-vendor-implementation (MRO):
software-version (MRO): product_version: 8.2.1; product_version_text: 8.2; product_version_text_short: 8.2; platform_name: XCP; platform_version: 3.2.1; product_brand: XCP-ng; build_number: release/yangtze/master/58; hostname: localhost; date: 2023-10-18; dbv: 0.0.1; xapi: 1.20; xen: 4.13.5-9.38; linux: 4.19.0+1; xencenter_min: 2.16; xencenter_max: 2.16; network_backend: openvswitch; db_schema: 5.603
virtual-hardware-platform-versions (SRO): 0; 1; 2
[09:55 xcp-ng-01 ~]#

[10:08 xcp-ng-01 ~]# xenpm get-cpufreq-para | fgrep turbo
turbo mode : enabled
turbo mode : enabled
turbo mode : enabled
turbo mode : enabled
[10:09 xcp-ng-01 ~]#

[10:10 xcp-ng-01 ~]# grep „model name“ /proc/cpuinfo
model name : Intel(R) Celeron(R) J4105 CPU @ 1.50GHz
model name : Intel(R) Celeron(R) J4105 CPU @ 1.50GHz
model name : Intel(R) Celeron(R) J4105 CPU @ 1.50GHz
model name : Intel(R) Celeron(R) J4105 CPU @ 1.50GHz
[10:10 xcp-ng-01 ~]#

[10:10 xcp-ng-01 ~]# xenpm start 1|grep „Avg freq“
Avg freq 2206470 KHz
Avg freq 2311540 KHz
Avg freq 2326550 KHz
Avg freq 2326550 KHz
[10:12 xcp-ng-01 ~]#

Power Settings in Citrix Hypervisor: C-states, Turbo and CPU Frequency Scaling – for AMD processors the „ondemand“ governor is normally preferred as it gives a good compromise between performance and power-saving but Intel processors typically save power by entering deep C-states so the „performance“ governor is preferred

[10:16 xcp-ng-01 ~]# /opt/xensource/libexec/xen-cmdline –set-xen cpufreq=xen:performance
[10:16 xcp-ng-01 ~]#