@MrNaz I recommend reading the XO blog; updates are published monthly.

NBD was introduced in the 5.76 release and the ability to enable in the Xen Orchestra UI was introduced in 5.79
https://xen-orchestra.com/blog/xen-orchestra-5-76/
https://xen-orchestra.com/blog/xen-orchestra-5-79/

Also enhancements were released in 5.81
https://xen-orchestra.com/blog/xen-orchestra-5-81/

@sb2014 In the 5.85 release of XO there were updates to the Netbox plugin that now requires three objects in the UUID field.
https://xen-orchestra.com/blog/xen-orchestra-5-85/

Here are the ones you need:

Virtualization > cluster
Virtualization > virtual machine 
Virtualization > interface

@Denson You can mount from the CD in Xen Orchestra on the Console tab or install from the EPEL repo. (I always install from EPEL)

EPEL install:
dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm -y

Tool install:
dnf install xe-guest-utilities-latest -y
Be sure to enable and start after installing: systemctl enable --now xe-linux-distribution

Doc ref: https://xcp-ng.org/docs/guests.html#linux

@gecant Yes. That hotfix was released with the XCP-ng March 2023 Security Update

@Denson You're welcome; glad to help.

@Denson You can mount from the CD in Xen Orchestra on the Console tab or install from the EPEL repo. (I always install from EPEL)

EPEL install:
dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm -y

Tool install:
dnf install xe-guest-utilities-latest -y
Be sure to enable and start after installing: systemctl enable --now xe-linux-distribution

Doc ref: https://xcp-ng.org/docs/guests.html#linux

@sb2014 In the 5.85 release of XO there were updates to the Netbox plugin that now requires three objects in the UUID field.
https://xen-orchestra.com/blog/xen-orchestra-5-85/

Here are the ones you need:

Virtualization > cluster
Virtualization > virtual machine 
Virtualization > interface

I recall a forum thread about this error. It should be fixed: (if using the latest XOA build or commit from source)
https://xcp-ng.org/forum/topic/4810/netbox-plugin-error-ipaddr-the-address-has-neither-ipv6-nor-ipv4-format

If on the latest, then there may be an issue with an IP in the pool.

@MrNaz I recommend reading the XO blog; updates are published monthly.

NBD was introduced in the 5.76 release and the ability to enable in the Xen Orchestra UI was introduced in 5.79
https://xen-orchestra.com/blog/xen-orchestra-5-76/
https://xen-orchestra.com/blog/xen-orchestra-5-79/

Also enhancements were released in 5.81
https://xen-orchestra.com/blog/xen-orchestra-5-81/

@fred974 I suggest installing on its own VM. I have never used Portainer to manage Kubernetes (only Docker containers) however, I usually use Rancher to manage K8s and I always install on its own VM.

@Phase1
A community built version is the most recent build of XCP-ng Center [v20.11.00.3], which may work with XCP-ng 8.3 Alpha.
It can be obtained from the following:
https://github.com/cocoon/xenadmin

It is not an official client and unsupported by Vates.