pxe | unattended installation of various operating systems | Configuration Management library

My motherboard is ASUS H81M-E,it connect to a router.
Setting in BIOS:

Background:

I have a bare metal Kubernetes cluster. The master node is diskful, however all of the worker nodes are diskless, and PXE boot off of a machine which provides their OS image and non-volatile NFS mount points.

We found early on that we needed some kind of non-volatile storage so that the diskless nodes could store their configurations, kubernetes secrets, SSL keys, etc... Without the non-volatile storage, the nodes would have to be deleted and rejoined to the cluster every time they rebooted, which is obviously a pain.

So we created NFS mount partitions for /etc/kubernetes and /var/lib/kubelet so that the nodes could remember who they were and rejoin the cluster after a reboot.

The Problem:

However, we have run into a problem with kubeadm: It unmounts/remounts /var/lib/kubelet whenever you run kubeadm join. This leads to kubelet puking and dying because it can't find the appropriate device. The specific error is:

I assume the answer is yes but I haven't explicitly found an assertion of this for every possible situation.

Given an intricate inheritance tree that probably would require step by step upcasting due to intermediate non virtual inheritance and also after multiple chains of upwards casting and downwards dynamic casting of pointers (always starting from the very same instance) the final address to the virtual base of that instance is guaranteed to be the same?

I'm looking at an instance of ICollection called pxe in the VS Watch window. I understand that the Raw View is meant to show the object without anything extra added. The property IsReadOnly is a member of the ICollection interface and is public by default. Why is it listed in the Non-public members in the Watch window?

I am developing an installation menu for an application in PyQt5. The directory structure is as follows:

I'm trying to create a VM from an .iso file on my computer. In my boot order settings, the DVD Drive with as value the .iso is at the top. I've tried several different VM's (Ubuntu18.04, Windows 10 and Windows Server 2016) all of which give me the same problem where they don't boot from the .iso file. Pressing any key doesn't do anything.

I followed tutorials from both my lecturers and articles online when creating the VM's.

I am clueless as to what I'm doing wrong, so any help is appreciated

Black "Start PXE over IPv4 screen Error message when trying Windows 10 after the black "Start PXE over IPv4" screen Error message when trying Ubuntu after the black "Start PXE over IPv4" screen

I have setup a live CentOS 7 that is booted via PXE if the client is connected to a specified network port.

Once the Linux is booted up, I have scripted a small logic that compares if there is a newer image version available on a central host than it is already deployed on the client. This is done with comparing the contents of a versions file. If there is a newer version, the image should be deployed on the client. Else only parts of the Image (qcow2-Files) should be replaced to safe time. Since the Image is up to 1TB I do not want to apply the image at any case. It would also take too long.

On the client, there is a volume group that consists of lvms in different sizes and also "normal" partitions (like /dev/sda1).

Is there a way to deploy a whole partition structure using a cli? I already figured this to recover one disk out of the whole system. But this would make a lot of effort to script around that to get the destination structure I want.

I found out that there is no way to "run" clonezilla as a cli (which I actually cannot understand why this does not exist). I was trying to use parts of the clonezilla live iso with the command "ocs-sr", but I stuck somewhere and it always gives me a "unknown commands"-Error.

For my case the best would be a thing like:

I'm looking in way to convert already prepared RHEL 7.7 installed on VMware to a LiveCD.

Basically the current installed OS have all ISO and Tools needed for some specific action, and it would be great help if I could just convert it to an ISO and boot it from network ( PXE ) or from a CD.

I have tried Linux Live Kit: https://github.com/Tomas-M/linux-live. Although it finished OK, the resultant ISO is stuck on boot, where it just offer the boot menu and if I click on the boot linux it just start count down over and over..

Is there some easy tool to convert an installed OS to a live CD?

Why does the try part work fine, but catch part gives an error? Weird thing is that even though it gives an error, it still does the deletion. Any ideas?