@olivierlambert Does the xe command interact with the XAPI solely or is there some other service/API that Citrix has made that the xe command line utility depend on?

@olivierlambert NICE!! I super love PowerShell. I hope Unix socket interaction is part of it. I'd love to help contribute, except I am a super noob when it comes to development. I've written c# tools before, but I am all self taught and there's so much about C# I don't know.

I totally overlooked the "for XO". The Unix socket thing doesn't apply there. It is still really awesome though and wish I could help.

@bvitnik .Net core supports connecting to Unix sockets (socket types). PowerShell can, but would need to create .Net objects to do it. My goal was to still use the Citrix PowerShell module, but I would need to edit the .Net SDK as well as the PowerShell module code that uses the .Net SDK. The scope might be too large for a noob such as I.

I'm sure I could figure it out eventually, but it would take me forever. I'm a sysadmin that's loves writing code (all basic tools and automations though) and I wish I could do it more, so I could get better at it.

EDIT: Citrix has two editions of the PowerShell module, one written for Windows PowerShell and one written for PowerShell core.

@Byte0 Oh, I may have just found it. It's written on ocaml? Uh oh. Might be well out of my ability to make this happen.

I am a huge fan of PowerShell and there is a PowerShell module for managing XenServer/XCP-ng, however it requires connecting to the Xen system with a username/password before using it even if the PowerShell module is installed on XCP-ng itself.

I noticed that the version of xe that I install on my workstation needs to make a connection (of course), but the xe utility on XCP-ng host does not need to do this. It seems there is some way of interacting with the XCP-ng server that doesn't require auth if running on the server as root.

I was hoping I could figure out a way to replicate this with with PowerShell, so that if I am logged into XCP-ng as root, I can immediate run Get-XenVM without needing to run Connect-XenServer first.

@BenjiReis The xapi is written in OCaml? That is pretty cool. I would love to learn OCaml one day.

Anyways, doesn't seem intuitive to design it this way:

Going to file an issue in that repo to see what happens. I suppose they would have to fix the OCaml code you linked as well.

@BenjiReis just checked the repo: https://github.com/xcp-ng/xcp-ng-xapi-plugins/tree/master/SOURCES/etc/xapi.d/plugins

That doesn't even have the firewall-port script in it, so not sure what repository contains that to send a fix to.

@BenjiReis am I crazy or does the firewall-port script have a bug? If I use the firewall-port script to open the port then use firewall-port check 3493 tcp as a way to check, it reports that it is not open. The code needs to be fixed from

    check)
        if [[ -z `iptables -S $CHAIN | grep " $PORT "` ]]
        then
            echo "Port $PORT open: true"
        else
            echo "Port $PORT open: false"
        fi
        ;;

to

    check)
        if [[ -n `iptables -S $CHAIN | grep " $PORT "` ]]
        then
            echo "Port $PORT open: true"
        else
            echo "Port $PORT open: false"
        fi
        ;;

or

    check)
        if [[ -z `iptables -S $CHAIN | grep " $PORT "` ]]
        then
            echo "Port $PORT open: false"
        else
            echo "Port $PORT open: true"
        fi
        ;;

If I knew how to do a git pull request and all that I'd do it, however I do not.

I have a UPS connected to XCP-ng via USB. I have a backup server I need to setup to monitor the UPS for shutdown as a secondary NUT host.

XCP-ng blocks NUT server communication. What would be the best way to edit iptables (or nftables, I forget which XCP-ng uses) to allow the NUT secondary server to communicate with the primary NUT service running on XCP-ng?

@olivierlambert Okay. Thank you.

I am finding myself in this really unfortunate situation. We want to use Microsoft Connected Cache which requires Hyper-V. Microsoft Connected Cache is a way to cache inTune installation packages to reduce internet usage.

@Danp Oh for sure!

I have 3 delta backups that backup to an NFS share on a QNAP NAS.

1 of the backups is weekly and the other 2 are daily.

Is that sufficient information or did I forget a detail?

@Danp This is great, thank you. So as long as I migrate the VM, the VM with "[XO Backup weekly-vm-backup]" appended that XO creates will come with it?

I need to migrate VMs to new hardware. The new hardware doesn't have the same number of interfaces and has a bond whereas the current server does not have a bond, so I can't put them in the same pool.

Do I need to start backups fresh after the VMs have been migrated to the new hardware?

@olivierlambert The issue turned out to be a problem with the VHD files. The VM is a Windows VM converted from a physical server with disk2vhd. There were 3 disks in total that I had converted.

To resolve the issue, I created a bootable WinPE.vhd (with storage and DISM tools added) as well as another VHD as a temporary holder for .WIM files. I captured the contents of each VHD from the disk2vhd conversion into .WIM files on the temporary VHD. Then I created new .VHD files and applied the .WIM files to the new VHDs.
After this process, the backups are working.

EDIT (Important): I had to re-create the EFI boot partition and use bcdboot.exe to setup the Windows boot. I also made sure that the new .VHDs had the same drive letters assigned as the originals while in WinPE and have the new .VHDs assigned to the VM in the same order that the originals were.

@olivierlambert oh, yes! That makes more sense. Xen Orchestra is running as a VM on the same host, so it seems unlikely to be a networking issue.

@olivierlambert It only just occurred to me that the "HTTP connection has timed out" could be Xen Orchestra timed out communicating with XCP-ng. If that is the case then more vCPUs and memory on the Xen Orchestra VM wouldn't solve this problem would it...? I suppose I will see.

I have failing backups that leave behind an Export task of a VDI.

I noticed that there are multiple VHD snapshots remaining that are assigned to the Control Domain.

Can I just delete these? The backup error is "HTTP connection has timed out". I have since added more vCPUs and memory to the Xen Orchestra and will see if this resolves the problem, but I want to know if I can delete these remaining VDI snapshots first.

EDIT: I forgot to add that the VM is Windows and has multiple VHDs attached. None of the other VHDs have this issue. Just the one VHD.