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Kategorie: Cheat Sheets

28MärzMärz 28, 2025

Migrate Kubernetes Runtime from Containerd to CRI-O

Posted by oveits in DevOps, Tutorial, Kubernetes, Cheat Sheets

Why Replace Containerd with CRI-O in Kubernetes? Switching container runtimes again might seem unnecessary after the recent move from Docker to containerd. However, CRI-O offers unique features like enhanced Kubernetes compatibility and improved security. For example, I used CRI-O to test…

Read More Migrate Kubernetes Runtime from Containerd to CRI-O

30MärzMärz 30, 2020
0 comments on “Tracing iptables on CentOS – Cheat sheet”

Tracing iptables on CentOS – Cheat sheet

Posted by oveits in Cheat Sheets

This is a small cheat sheet that may help to troubleshoot iptables on CentOS systems. Most of the other articles on the Internet did not work, because CentOS has changed the way of activating tracing. Prerequisites iptables is installed and…

Read More Tracing iptables on CentOS – Cheat sheet

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    • Server Side Rendering
    • End to End Testing
    • Automatic Table of Contents – Part 1
    • Automatic Table of Contents – Part 2
    • JHipster Scaffolds
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    • Productive Docker (3): DC/OS on AWS
    • Avoid Docker created Files with wrong Permissions (Maven example)
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  • Kubernetes
    • NEW: Migrate Kubernetes Runtime from Docker to containerd
    • CKA 1 – Certified Kubernetes Administrator Labs (WIP)
      • CKA 2 – Preparation
      • CKA 3 – Deploy a simple Application
      • CKA 4 – Resource Management
      • CKA 5 – Node Maintanance
      • CKA 6 – Kubernetes API
      • CKA 7 – Jobs and CronJobs
      • CKA 8 – ReplicaSets
      • CKA 9 – Deployments + Rollout/Rollback
      • CKA 10 – DaemonSets
      • CKA 11 – Services
      • CKA 12 – Labels and Node Selectors
      • CKA 13 – Taints and Tolerations
      • CKA 14 – Affinity and Anti-Affinity
      • CKA 15 – Kubernetes Ingress
      • CKA 16 – Kubernetes Persistent Volumes
      • CKA 17 – Kubernetes Readiness and Liveness Probes
      • CKA 18 – Kubernetes Metrics Server
      • CKA 19: Kubernetes Logging
    • Single Node Cluster based on Minikube
    • Multi Node Cluster based on kubeadm
    • K8s Services – Hello World
    • Persistent Volumes
    • Local Persistent Volumes *popular*
    • HTTPS Apps on Minikube w/ self-signed certs
    • HTTPS Apps on Kubeadm Cluster w/ self-signed certs
    • HTTPS Apps on Kubeadm Cluster w/ Let’s Encrypt certs
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