Category Archives: Computers

FreeIPA/Red Hat IDM

I’m working on bringing my 100+ servers under FreeIPA, aka a centralized Identity Management system. Since FreeIPA is an upstream source for Red Hat IDM, I added it to the title. Installing FreeIPA on servers is bog simple. Run Then … Continue reading

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Kubernetes Manual Upgrade to 1.18.8

Upgrading Kubernetes Clusters This documentation is intended to provide the manual process for upgrading the server Operating Systems, Kubernetes to 1.18.8, and any additional upgrades. This provides example output and should help in troubleshooting should the automated processes experience a … Continue reading

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Kubernetes Ansible Upgrade to 1.18.8

Upgrading Kubernetes Clusters This document provides a guide to upgrading the Kubernetes clusters in the quickest manner. Much of the upgrade process can be done using Ansible Playbooks. There are a few processes that need to be done centrally on … Continue reading

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Kubernetes Preparation Steps For 1.18.8

Upgrading Kubernetes Clusters The purpose of the document is to provide the background information on what is being upgraded, what versions, and the steps required to prepare for the upgrade itself. These steps are only done once. Once all these … Continue reading

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Kubernetes Upgrade to 1.18.8

Upgrading Kubernetes Clusters The following lists what software and pods will be upgraded during this quarter. Upgrade the Operating System Upgrade Kubernetes Upgrade kudeadm, kubectl, and kubelet RPMs from 1.17.6 to 1.18.8. Upgrade kubernetes-cni RPM from 0.7.5-0 to 0.8.6-0. kube-apiserver … Continue reading

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Docker Registry

Overview I have a requirement to create a local Docker Registry. I’m doing this because I have four Kubernetes clusters to somewhat mirror the work environment. This lets me test out various new bits I want to apply to the … Continue reading

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Kubernetes Pod Schedule Prioritization

Introduction Currently Kubernetes is not configured to treat any pod as more or less important than any other pod with the exception of critical Kubernetes pods such as the kube-apiserver, kube-scheduler, and kube-controller-manager. Multiple products with different Service Class requirements … Continue reading

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Kubernetes Resource Management

Overview There are two objectives to Resource Management. Ensure sufficient resources are available for all deployed products and determine when additional resources are required. This document provides information based on the deployed Kubernetes cluster and is filtered for my specific … Continue reading

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Homelab

Well, I figure I should list out my gear as I finally picked up my third R710 and got it running and attached. It’s a moderate setup compared to some I’ve seen here 🙂 I’m less a hardware/network guy and … Continue reading

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My Tech Certifications – A History

I don’t as a rule chase technical certifications. As a technical person who’s been mucking about with computers since around 1981, and as someone who has been on the hiring side of the desk, certifications are similar to some college … Continue reading

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