Category Archives: Computers

Add Jenkins Build Agent

Posted on November 19, 2020 by Freejack

You want Jenkins to use a remote agent (server) to do the builds. As such, create two more servers to process tasks. I want to process remote tasks on server 2 so add a label for ‘remote’ I want to … Continue reading →

Posted in Computers, Jenkins | Tagged , | Leave a comment

kubeadm kubelet Problem

Posted on November 18, 2020 by Freejack

Over the past year and a bit, I’ve been using kubeadm to build and upgrade my clusters starting with Kubernetes 1.14. I switched from the home grown scripts I’d initially created for the 1.2 installation and continued through 1.12 to … Continue reading →

Posted in Computers, Kubernetes | Leave a comment

FreeIPA/Red Hat IDM

Posted on October 27, 2020 by Freejack

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 →

Posted in Computers, FreeIPA | Tagged , , , | Leave a comment

Kubernetes Manual Upgrade to 1.18.8

Posted on September 19, 2020 by Freejack

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 →

Posted in Computers, Kubernetes | Tagged | Leave a comment

Kubernetes Ansible Upgrade to 1.18.8

Posted on September 19, 2020 by Freejack

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 →

Posted in Computers, Kubernetes | Tagged | Leave a comment

Kubernetes Preparation Steps For 1.18.8

Posted on September 18, 2020 by Freejack

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 →

Posted in Computers, Kubernetes | Tagged | Leave a comment

Kubernetes Upgrade to 1.18.8

Posted on September 18, 2020 by Freejack

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 →

Posted in Computers, Kubernetes | Tagged | Leave a comment

Docker Registry

Posted on July 10, 2020 by Freejack

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 →

Posted in Computers, Docker | Leave a comment

Kubernetes Pod Schedule Prioritization

Posted on June 12, 2020 by Freejack

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 →

Posted in Computers, Kubernetes | Tagged | 1 Comment

Jenkins And Build Agents

Posted on May 22, 2020 by Freejack

Overview In this article, I’ll provide instructions in how I installed Jenkins and the two Jenkins Build Agents in my environment. System Requirements I used one of my standard templates in vCenter to create the three Jenkins nodes. All three … Continue reading →

Posted in Computers, Jenkins | Tagged | Leave a comment