My last PXE boot attempt got into the Kickstart stage and then failed due to the repo set up. The VM SCreen looked like this.Continue reading
PXE is conglomeration of tools used to get a new operating system onto a computer. It is based on two protocols: DHCP and TFPT. I used PXER a long time ago at Penguin and have always wanted to set it up for my home personal use. I’m doing that now for my lab. My goal is to first be able to provision virtual machines, and then to provision physical boxes. I need to do a full install of RHEL 7 and RHEL 8, which means I also need Kickstart to automate the install process. I had it working, but after rebooting the NUC it is running on it broke. Here’s my debugging.Continue reading
The OpenShift installer is fairly specific in what it requires, and will not install into a virtual machine that does not have sufficient resources. These limits are:
- 16 GB RAM
- 4 Virtual CPUs
- 25 GB Disk Space
Cloud is easy. It is networking that is hard.
Red Hat supports installing OpenShift on OpenStack. As a Cloud SA, I need to be able to demonstrate this, and make it work for customers. As I was playing around with it, I found I could not tear down clusters due to a dependency issue with ports.Continue reading
Many years ago, when I first started working at Red Hat, I worked up a package management domain model diagram. I’ve referred to it many times over the years, but have never posted or explained it in detail. Recently, discussions over image building software caused me to refer to it a few times. Here it is, with annotations below.Continue reading
This one is going to be a little light on details, as we are still working through it, but I’d just like to share what I’ve been working on the past couple weeks. Note that this is for a proof-of-concept cluster, and is not for production.Continue reading
Ansible exists to help automate the time consuming repeated tasks that technologist depend upon. One very common jobs is to create and tear down a virtual machine. While cloud technologies have made this possible to perform remotely, there are many times when I’ve needed to setup and tear down virtual machines on systems that were stand alone Linux servers. In this case, the main interfaces to the machine are ssh and libvirt. I recently worked through an Ansible role to setup and tear down an virtual machine via libvirt, and I’d like to walk through it, and record my reasons for some of the decisions I made.
I do this infrequently enough that I want to record a reminder how I do it:
sudo cp ~/Downloads/rhel-server-7.6-x86_64-kvm.qcow2 /var/lib/libvirt/images/tower.qcow2 sudo virt-install --vcpus=2 --name tower --ram 4096 --import --disk /var/lib/libvirt/images/tower.qcow2