I just can’t figure out how to create a VM in ACS with SCSI controllers. I am able to add a SCSI controller to the VM, but the Boot Disk is always connected to the SATA controller. I tried to follow this thread (https://lists.apache.org/thread/op2fvgpcfcbd5r434g16f5rw8y83ng8k) and create a Template, and I am sure I am doing something wrong, but I just cannot figure it out :-(
I had a rough start with XCP-ng too. One issue I had was the NIC in my OptiPlex, which worked… but was super slow. So the initial installation of the XO VM (to manage XCP-ng) took over an hour. After using a USB NIC with another Realtek Chip, Networking was no issue anymore.
For management, Xen-Orchestra can be self-built and it is quite easy and works mostly without any additional knowledge / work if you know the right tools. Tom Lawrence posted a Video I followed and building my own XO is now quite easy and quick (sorry for being a YT link): https://www.youtube.com/watch?v=fuS7tSOxcSo
Sure, ESXi would have been interesting. I thought about that, but I did not test it because it is not interesting to me anymore from a business perspective. And I am not keen of using it in my Homelab, so I left that out and use that time to do something relaxing. It’s my holiday right now :-)
That’s a very good question. The testsystem is running Apache Cloudstack with KVM at the moment and I have yet to figure out how to see which Disk / Controller mode the VM is using. I will dig a bit to see if I can find out. Would be interesting if it is not SCSI to re-run the tests.
Edit: I did a ‘virsh dumpxml <vmname>’ and the Disk Part looks like this:
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/mnt/0b89f7ac-67a7-3790-9f49-ad66af4319c5/8d68ee83-940d-4b68-8b28-3cc952b45cb6' index='2'/>
<backingStore/>
<target dev='sda' bus='sata'/>
<serial>8d68ee83940d4b688b28</serial>
<alias name='sata0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
It is SATA… now I need to figure out how to change that configuration ;-)
It would be cool to see how linux centric workloads behave on those Hypervisors. Juuust in case you plan to invest some time into that ;-)
Yes, it is Windows centric because that is where the workload is based on I need to run. It would be cool to see a similar comparison with a workload under Linux that puts strain on CPU, Memory and Disk.
Oooh, that explains it! I wondered what is going on. Thank you very much. And thank you for working on XCP-ng, it is a fantastic platform :-)
A few releases ago they made massive improvements in Speed. I use NC since the Split from OwnCloud and that performance Upgrade recently was truly impressive.
I spent half a day trying to get acme-dns + Cert Warden up and running and failed miserably. And I think I will give up on it. That does not happen usually, but during my debugging sessions I have seen that the acme-dns project is not maintained regularly since quite a while. The current maintainer just has not enough time, but tries to prepare the project for a move to a new GitHub organization, so more people can help with the project. Until then, Issues and PRs accumulate, so I am not sure anymore if I should stick to acme-dns or just do it differently.
Why did I pick this scenario? Because of Let’s Encrypt certificates and my DNS provider does not allow fine-grained API Keys for DNS management. This means, that currently the processes that request certificates in my Network need the API Key for the dns-challenge for Let’s Encrypt.
Ways around that are by either using Let’s Encrypt alternate (I think it is called DNS alias mode) method where you can request Certificates for your main domain, but put the TXT records for the DNS challenge on another Domain. One way is to just use a 2nd Domain for that if you have one.
I tried to do it with a Subdomain of my Main Domain that I delegate to acme-dns. The whole acme-dns, Domain delegation stuff etc. works fine, but I am not able to get this hooked up to Cert Warden properly and end up with error messages that make no sense to me and since I do not find any further information in the logs, as I said, I just gave up yesterday evening… for now ;-)
Another thing I am struggling sometimes is my Pi-Hole + Unbound setup where Unbound for no reason just returns a NXDOMAIN for some queries and I can not figure out why, under which circumstances and when that happens. It just seems to be random and a restart / cache clearing etc. does not fix it.
PostgreSQL Updates AFAIK require manual Backup / Restore of the Database. But better look that up. I think the last one I did was:
As I said, better look it up first, this is just how I remember the process (but not the backup / restore commands).
On mobile atm. Look for pi-hole + unbound. Uses root DNS. Might take a tiny bit longer to resolve at first, but as long as root DNS is uncensored it should be the way to go.
I posted it yesterday, but just in case we are facing some Fediverse cross-instance sync issue, here is what I posted. Sorry again if this is not for you then :-( Quote: I am very sorry, as I have just realized that it is only available in a single Language: German. I fear the chances are pretty low that it is of use for you, but maybe for the other German around here in the Fediverse… https://www.willuhn.de
I use Hibiscus for all my banking needs.Makes a direct connection to my bank. Will get you the link if there is interest when I am back home.
Thank you very much. I spent another two hours yesterday reading up on that and creating other VMs and Templates, but I was not able yet to attach the Boot disk to a SCSI controller and make it boot. I would really liked to see if this change would bring it on-par with Proxmox (I wonder now what the defaults for Proxmox are), but even then, it would still be much slower than with Hyper-V or XCP-ng. If I find time, I will look into this again.