Peter Krumins's questions

Every Monday at 9AM UTC something sends a HUP signal to my node.js process (and I think HUP is being sent to all processes, not just mine). How do I find which process sent the HUP signal to my program? My program has a HUP handler that makes it restart (to reload config), so every Monday at 9AM, my production stack restarts on its own (but keeps running, so all is good, it's just super annoying).

I have a feeling it's systemd doing it, I just don't know which part of systemd is doing it. Any ideas?

It's a Debian 11.7 installation.

In Windows 2003 and 2008 we had Terminal Services Manager (see screenshot below). However in Windows server 2012 it's gone.

Does anyone know how to access the list of currently remotely logged on users in Windows 2012 through a similar tool or some other way?

(I tried connecting to Windows 2012 from Windows 2008, that's why you see "win2012" in the TSM groups list. But that didn't quite work, and that's not a solution to my problem either. I was just trying to somehow manage remote users on the Win 2012 server.)

Anyone knows how to see RSOP for an OU? If I just launch RSOP I see the policies for the domain but I want to know what's going on with one of the OUs that's misbehaving. And I can't find a way to see the policies on this particular OU. Any ideas?

Does anyone know how to script GPO for users in a Windows computer that is not on any Active Directory network?

I can't use GPMC because it doesn't work without a domain. I have been searching the net for the last couple of hours and all the solutions that I find are related to GPMC.

I'd imagine there are some objects in the GPO that are accessible via WMI? Does anyone know anything about that? I was unable to find any information about that.

Here is the situation I am trying to script:

I have 10 users on the machine, and I want to restrict what they are able to do on the machine. So I created 10 GPOs for each one of them. Now I want to apply a common policy to all of them. The only way to do it is to go through each of the GPO and do it manually. This is too time consuming, therefore I am seeking for a simpler solution.

I was unable to find a way to copy GPO from a user to a user. That would make it much easier, I would create a GPO for 1st user, then copy it over to all the other users, but no luck, couldn't find a way to copy GPOs.

The other method I tried was creating a GPO for the whole user group but it turns out you can't apply GPO to a group unless you use GPMC, which I can't cause the computer is not on any domain.

So I am thinking about scripting this whole process, but again I can't find any examples of how to access particular GPO objects for particular users and modify properties through WMI.

Any suggestions on the issue I am having?

Thanks!

Does anyone know how to create smaller disk size Windows instances on Amazon EC2? Their default is 30 GB, and I have to pay $0.10/GB/month for EBS storage, which means that for each Windows instance I have to pay additional $3 a month. If I have 100 instances, that's $300 wasted. I'd be pretty happy with 5GB or even smaller Windows instances. Thanks!

I just assembled a new Linux file server with several Samsung HD103UJ 1TB hard drives and I am currently optimizing it.

The question I can't find an answer to is: is it reasonable to set a spindown timeout (with hdparm -S) for the drives? Can the spindown/spinup be harmful to the disk in the long run?

My previous file server did not have this timeout and the hard drives have been operational for 3+ years with no problems (always on) so I am not sure if I need this optimization at all.

What are your thoughts on this?

Thanks!

As much as I have read about iowait, it is still mystery to me.

I know it's the time spent by the CPU waiting for a IO operations to complete, but what kind of IO operations precisely? What I am also not sure, is why it so important? Can't the CPU just do something else while the IO operation completes, and then get back to processing data?

Also what are the right tools to diagnose what process(es) did exactly wait for IO.

And what are the ways to minimize IO wait time?