pxe | ipxe scripts , initrd generators

Recently I'm learning how to use autoyast to install SUSE unattendly via network with pxe. My target is --

1. Unattended install Suse12.4 with pxe -- I have made it successfully with autoyast.xml and pxe
2. The install not only install Suse only, but also need to install some external packages -- eg. rlwrap and puppet client... Follow the steps in https://documentation.suse.com/sles/12-SP4/html/SLES-all/configuration.html#CreateProfile-Software -- in Section 4.9.2 So I made a test with rlwrap package only, here are my steps--
3. Since my repository was http://192.168.95.77/12.4, so I copied rlwrap-0.43-lp152.3.8.x86_64.rpm to http://192.168.95.77/12.4/suse/x86_64 and make sure it's available from http.
4. Then I modified my autoyast.xml add this at the file end--

**

EDIT-UPDATE:

I found a way to achieve what was trying to do, using the index_of plugin. The following code outputs what I need.

I have data of repeated measurements (4 or 5 times) of 3 patients in a long format:

I am running a PXE service on buster.

On a client it searches for a DHCP server, for about a minute. Then eventually times-out. Meanwhile on the server sudo systemctl status isc-dhcp-server.service reports …Active: failed (Result: exit-code)… . Then I issue sudo systemctl restart isc-dhcp-server.service - reply: Job for isc-dhcp-server.service failed because the control process exited with error code.… .

However back on the client, I restart it and again it searches for a DHCP server. In a second or two it is assigned an IP … (This happens on each boot - as it should.)

So in order to discover more, on the server, sudo systemctl status isc-dhcp-server.service gives me the PID. Then journalctl _PID= gives all the messages: … DHCPINFORM from x.y.z.xx via wlan0 and … DHCPACK to x.y.z.xx (a:b:c:d:e:f) via wlan0 - over and over.

• Are there really errors?
• Why does the daemon report failed (with non-error responses) when it works?

Background

I am bringing up a Linux kernel via Yocto for some vendor-provided embedded hardware. I have configured the image to boot via fitImage with an initramfs and no rootfs (there is persistent storage but this is entirely for userspace application use). Think PXE live image and you won't be far off.

Things have been going well until my initramfs image crossed the ~128MB mark. Below this and everything boots as expected and all drivers are bound without issue. Above this mark and the kernel still boots but many drivers, though not all, are not bound. This is quite perplexing as all drivers are statically built into the kernel (no modules are used on this platform). Unfortunately, one of these modules runs the platform watchdog which causes entirely predictable reboots.

Thus far I have verified that all of the symbols are present in the vmlinux image:

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?