Posts made by rjt

@Obsolesce in the long run, proprietary hardware and software causes the most issues.

@rjt dang, most of what I typed up disappeared upon submit and reformatted not how I intended. Will have to try again from a desktop.

@CCWTech
I rarely ever have had to power off a Linux OS if any kind - in 2 decades. Maybe because I never left Linux for the Mac. Definitely because i like troubleshooting and finding how things work more than actually using the pc for normal productivity. Maybe you know all about these, but did not see these mentioned:

CTRL-ALT+f[1-7]

* `ssh [email protected]` from another machine.  Again, helpful to set this up ahead of time before crash.  Copy your `~/.ssh/id_rsa.pub` public key to the nvidia box ahead of time either manually or `ssh-copy-id user@nvidiabox`
* `xrandr`
* **?REISUB** - Raising Elephants Is So Utterly Boring is the keystroke combo known only to contortionists.     Keep `CTRL-ALT-SysRq` held down and tap ?, r, e, i, s, u, b.     Do this from a virtual terminal ahead of time.   Press `?` key for menu.   Don’t press `b` key until you are sure you want to reBoot.

@JaredBusch,

ls file.pdf | Start-Process -verb print

does not necessarily
depend upon a PDF reader at all. It is dependent upon the verb “Print” existing and configured in the registry for Explorer.exe configuration entries residing in the registry.

• In Explorer.exe, navigate to any folder containing a file.pdf.
• Right click the file.
• Does the verb “Print” appear in the pop up context sensitive menu?
• if not, then you will get the behavior seen.

the Verbs “Open”, “Edit”, “RunAs”, and “Print” are windows Explorer.exe

@jaredbusch nfs on top of ZFS.
ZFS should be the underlying block/fs for everything whether a single hard drive, block storage like iSCSi, file storage such as NFS or CIFS. I like TrueNAS for this purpose. As you can see, I love ZFS. My problem is I also love CentOS. Need to figure out easy ways to get ZFS on CentOS. We should all write a letter to Larry asking him to open up the license.

@irj If one man IT shops are not embracing InfrastructureAsCode and devOps, then their job will be taken by the cloud. For the rest of us, we see plenty of automation in the same virtualization systems that Amazon uses. XenOrchestra builds some of that in from the get go.

@francesco-provino Amazon Web Services may have a slight disagreement with you on whether KVM or XEN is suitable for business.

@obsolesce At Microsoft's economy of scale, they make money when people buy new machines.

With the exception of mobile tabletpcs, we get by with used computers. But the security updates of the Win11 will probably mean we buy new desktops in the next year.

@scottalanmiller As someone who has had to deal with vendor supplied hardware and software for a medical practice, I have come to firmly believe vendors are the enemy, a $very $very $expensive enemy.

@stacksofplates

XCP-ng and XE cli and XenOrchestra and XCPngCenter use the well known XEN API known as "XAPI".

Start a task using the XE command line and it shows up in the other task lists such as that in XenOrchestra.

Start a vm move from XCPNGcenter and it shows up under xe task-list.

Start a vm copy command from XenOrchestra and it will show up under xe task-list.

We use one set of tools to manage both old Citrix 6.5 hosts and the latest XCP-ng hosts.

Not sure how that compares to ProxMox/KVM. Do not know on the status of a real KVM API, but as a long time bash user, I would consider bash an API.

@jaredbusch XCP-ng and XenOrchestra are both supported very well. Just today, someone using the latest version of VirtualBox had problems with importing a VirtualBox.OVA into XCP-ng using XenOrchestra. A dev looked at the problem and posted patches to github very same day. Unlike other vendors, you are dealing directly with developers as opposed to a call center "I do not want to be here. I just want to close this ticket" hourly employee.

I would be more worried about a vulnerability in the javascript framework supporting MeshCentral, so i would NOT put the MeshCentral server on the internet directly, but inside VPNs. Each of the sites on one VPN and the HIPAA site on another standalone VPN. MeshCentral inside both VPNs.

I would second what @JaredBusch said about the HIPAA site and automatic control of the desktop. I would hope if you need control after hours, you could simply reboot the machine and then no consent is necessary.

Lastly, there is a spot in the meshCentral configuration file and a cli option that logs anyone in without authentication - "User". It was meant for testing, enable "User" and all authentication is bypassed and logons occur automatically. One just might think keepass autologon was working really fast. So delete the User option from /opt/meshcentral/meshcentral-data/config.json and never pass it on the cli. Ditto for the "nousers" option.

@notverypunny, had some wishful thinking after seeing references to netDMA and Andy Grover, the developer of the iSCSi targetcli freebranch and now stratis who posted all the benchmarks and papers on ioat, and speeding up iSCSi type IO using RDMA / RoCE between Hypervisors is my goal. But then could not find Andy Grovers actual ioat patches or benchmarks to look for myself - 404s.

Encourage to make indoor soccer, indoor tennis, volleyball, and basketball. There is enough empty space for both.

Southroads mall in Omaha, Nebraska USA enclosed a colo type business many many years ago.

Not a big fan of Amazon in terms of supporting the tax base, but still uses the roads. Sports courts and CoLo.

In the Dell r720 "Lifecycle Controller" --> "System BIOS Settings" --> "Integrated Devices" sub section, both default to disabled:

• "i/oat dma engine" defaults to disabled

• "SR-IOV Global Enable" defaults to disabled

Hoping "i/oat dma engine" enables Remote DMA or RDMA over ConvergedEthernet or RoCE for hyperconverged storage. Thoughts?

If running xcp-ng, would you turn both of these on nowadays or just the SR-IOV "Virtualization Mode" in the "Integrated NICs" of "Device Level Configuration"?

@DustinB3403 i was confirming and adding details to your reply to @Darek-Hamann in the number of hypervisors supported. It can be free, so you mean costly as in windows licensing or performance? If performance, i would hope RDMA would solve that.

@olivier Definitely worth repeating this old post. Oracle has given back so much more than Amazon.

@DustinB3403 StarWinds webpage does not list Citrix, but
StarWind Virtual SAN FREE vs. PAID AUGUST 2018
has a logo for CitrixReady and lists support for KVM and Xen Project VMs.

"Shared storage for KVM, Citrix XenServer and Xen Project VMs (HA iSCSI & CA SMB 3.1.1)" pg 5.

StarWinds free edition specifically mentions HyperV, Xen, KVM, and
vSphere and even supports Remote Direct Memory Access RDMA for serious disk speed up.

Havent convinced management that $6000 for xosan is much less expensive than vmWare. And cannot prove that xosan is faster without much bigger virtual machine allowances in the trial version.