Category Archives: Computers

Continuous Delivery With ArgoCD

Posted on November 20, 2022 by Freejack

Overview This article provides instructions in installing and configuring ArgoCD in Kubernetes. Installation The main task here is that Openshift is using ArgoCD so we should be familiar with how ArgoCD works. Images Installation-wise, it’s pretty easy. There are a … Continue reading →

Posted in CI/CD, Computers, Kubernetes | Tagged , | 1 Comment

Ingress Controller

Posted on November 20, 2022 by Freejack

Overview There are multiple IP assignments used in Kubernetes. In addition to the internal networking (by Calico in this case), you can install an Ingress Controller to manage access to your applications. This article provides some basic Service information as … Continue reading →

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Persistent Storage

Posted on November 20, 2022 by Freejack

Overview In this article I’ll configure and verify Persistent Storage for the Kubernetes cluster. Installation This is a simple installation. The NFS server has 100 gigs of space which will be used for any Persistent Volume Claims (PVCs) needed by … Continue reading →

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Kubernetes Networking

Posted on November 20, 2022 by Freejack

Overview This article provides instructions in installing the networking layer to the Kubernetes clusters. Calico Networking You’ll need to install Calico which is the network layer for the cluster. There are two files you’ll retrieve from Tigera who makes Calico. … Continue reading →

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Kubernetes Metrics Server

Posted on November 20, 2022 by Freejack

Overview The metrics server collects metrics from your kubernetes cluster. It’s also used by the Horizontal Pod Autoscaling (HPA) function to let you manage pods. Installation For my clusters, it’s a pretty simple configuration. I retrieve the components.yaml file from … Continue reading →

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Installing Kubernetes

Posted on November 20, 2022 by Freejack

Overview This article provides instructions in building the Kubernetes cluster using kubeadm and any post installation requirements. Build Cluster On the first control plane node run the kubeadm command. After the first node has been initialized, the connect strings will … Continue reading →

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Preparing Kubernetes

Posted on November 20, 2022 by Freejack

Overview This article will provide a howto on preparing hosts to install Kubernetes 1.25.7 on CentOS 7 using kubeadm. I’ll be using CRI-O as the container environment and Calico for the network layer. A followup article will provide instructions in … Continue reading →

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Kubernetes Storage

Posted on November 20, 2022 by Freejack

Overview This article provides some quick instructions on creating an NFS server for use as Persistent Storage in Kubernetes. A different article will discuss creating Persistent Storage. Firewall Configuration For the NFS server, it only will be accessed by Kubernetes … Continue reading →

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Load Balancing Kubernetes

Posted on November 20, 2022 by Freejack

Overview This article provides instructions in how I set up my HAProxy servers (yes two) to provide access to the Kubernetes cluster. Configuration To emulate a production like environment, I’m configuring two HAProxy servers to provide access to the Kubernetes … Continue reading →

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Docker Distribution

Posted on November 20, 2022 by Freejack

Overview At a prior job I used Artifactory to manage images. The nice thing about Artifactory is you can create a Virtual Repository in that you configure it to automatically pull images from a Remote Repository to make it available … Continue reading →

Posted in Computers, Docker | Tagged , | 1 Comment