Christian Huth - Christian Huth's Tech Blog (Page 2)

Granting read-only access to kubenav

This blog article shows how to grant read-only access to kubenav using a service account and RBAC permissions.

Making your Helm Chart observable for Prometheus

In this blog post, I walk you through the various steps required to make an existing Helm chart observable by Prometheus.

Kubernetes

Get rid of hard-coded IPs in your Helm charts

DNS resolution in Helm charts can be achieved using the network function getHostByName. Follow this blog post to find out how to do this.

Nextcloud

Synchronising Outlook with Nextcloud using CalDavSynchronizer

If you want to synchronize address books or calendars from Outlook with your Nextcloud for backup or centralized storage, this guide will show you how to achieve this.

Kubernetes

Certifications for the cloud-native world

This article is a collection of certifications you can obtain in the cloud-native world. The list contains certifications for Kubernetes, Linux, Prometheus different Cloud Providers and many more.

Kubernetes

Free learning material to boost your cloud-native knowledge

💡If you have material to add to this list, write me an email. Courses Application Delivery * ArgoCD Tutorial by Red Hat: https://redhat-scholars.github.io/argocd-tutorial/argocd-tutorial/index.html * Introduction to GitOps by The Linux Foundation: https://training.linuxfoundation.org/training/introduction-to-gitops-lfs169/ Application Development * Agile Project Management by GitLab: https:

Kubernetes

Commands Kubernetes should adopt from Red Hat OpenShift

Working with Kubernetes would become easier and more efficient with support for these handy OpenShift commands.

Kubernetes

Validating Helm charts using the Datree GitHub Action

In this guide, I will show you how to set up Datree to test your Helm charts against best practices and security misconfigurations using GitHub Actions.

linux

Linux snippets for your daily work

Kill all zombie processes ps axo stat,ppid,pid,comm | grep -w defunct | awk '{print $2}' | xargs kill -9

Kubernetes

kubectl flags you have probably never heard of

Working with kubectl becomes much easier and faster with these widely unknown flags.

linux

How to change the hostname of Ubuntu running in Windows WSL

This article shows how to permanently change the hostname of Ubuntu running in the Windows subsystem for Linux.

Kubernetes

Best way to use Bitnami’s database Helm charts

In this article I will show how to include Bitnami's charts as dependencies and use them in your own Helm templates in the easiest way.

Keycloak

Using Keycloak as OIDC Provider for Matomo

In this blog article I will show you how you can setup Keycloak as OIDC provider for Matomo. First we need to create a Client in Keycloak for our Matomo installation. Afterwards we can install a Plugin for Matomo, which enables the OIDC support and connect both software components in

Kubernetes

Basic krew commands

This article gives you an easy overview of the most basic commands you'll need to know of when working with krew - the plugin manager for kubectl. 衣装の候補を絞る場合は、サイズ、素材、装飾、付属品を同じ基準で見比べることが大切です。具体的な候補を確認する場合は、アニメコスプレ衣装から関連する商品や情報を比較できます。使用後は素材に合う方法で手入れし、装飾を傷めない形で保管することが大切です。 Update package list kubectl krew update List all available plugins kubectl

Kubernetes

Curated list of awesome kubectl plugins

When you followed my last blog post [https://blog.knell.it/setting-up-kubectl-and-krew/], you're having kubectl and krew installed by now. These two tools are a requirement for this blog post, so if you don't have them installed yet, please follow the instructions there [https://blog.knell.

Kubernetes

Setting up kubectl and krew

💡These instructions are suited for Debian-based distributions only. Please see official documentations for kubectl and krew for other operating systems. kubectl installation sudo apt-get update && sudo apt-get install -y apt-transport-https ca-certificates curl sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.

Kubernetes

Snippets for your daily work with Kubernetes

linux

How to execute sudo without password prompt

💡Never, I repeat NEVER, disable password prompt on your production systems, as this is a serious security risk and could harm your system! When working in development environments it is pretty annoying that sudo tasks require you to enter your password. But this behaviour can be disabled very easily with

linux

Overview of Shell Autocompletions

I simply love shell completion on the command line, which saves you from a lot of spelling errors and therefore saves you a lot of time in your daily working. With Autocompletion you can press <TAB> when you're typing a command, and the shell will show

linux

How to automatically load SSH keys on Windows autostart using Pageant

In this article I will show you how to load your private SSH key automatically when you start your Windows computer. To do this, we use PuTTY to create a SSH key-pair and Pageant to load the private key on start-up. 💡If you have already installed Pageant and have an

TYPO3

Backend-Login für Redakteure sperren

Die notwendige Beschränkung kann im Backend selbst konfiguriert werden. Dafür wechselt man auf das Modul "Einstellungen" - im Abschnitt Verwaltungswerkzeuge (TYPO3 10 LTS) bzw. Adminwerkzeuge (TYPO3 9 LTS) - und wählt dort das Submodul "Configure Installation-wide Options". Mit der Suchfunktion findet man den Eintrag "adminOnly&

Prometheus

Best Prometheus exporters for AWS

Cloudwatch Agent Exporter aws-cloudwatch-metrics 0.0.7 · helm/awsA Helm chart to deploy aws-cloudwatch-metrics project [https://artifacthub.io/packages/helm/aws/aws-cloudwatch-metrics]Cloudwatch Exporter prometheus-cloudwatch-exporter 0.18.0 · prometheus/prometheus-communityA Helm chart for prometheus cloudwatch-exporter [https://artifacthub.io/packages/helm/prometheus-community/prometheus-cloudwatch-exporter] ECS Exporter Docker Hub [https://hub.docker.com/

Kubernetes

Tools to automate the life of your Kubernetes cluster

Autoscaling Tools Vertical Pod Autoscaler Horizontal Pod Autoscaler Cluster Autoscaler KEDA Deployment Tools Cert Manager ExternalDNS GitOps Tools ArgoCD with ApplicationSet Controller RenovateBot Cluster Lifecycle Tools Kured Velero

Prometheus

Top 12 unknown Prometheus exporters to use in 2022

Blackbox Exporter prometheus-blackbox-exporter 5.8.0 · prometheus/prometheus-communityPrometheus Blackbox Exporter [https://artifacthub.io/packages/helm/prometheus-community/prometheus-blackbox-exporter] Cloudwatch Exporter prometheus-cloudwatch-exporter 0.18.0 · prometheus/prometheus-communityA Helm chart for prometheus cloudwatch-exporter [https://artifacthub.io/packages/helm/prometheus-community/prometheus-cloudwatch-exporter] Event Exporter kubernetes-event-exporter 1.4.8 · bitnami/bitnamiKu