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Next - Containers
Last updated on 8 Jan 2026
Published on 2 May 2025
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Containers
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Containerd
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How to run and manage containers using ctr
How to use nerdctl if you are familiar with Docker CLI
How to work with container images using ctr
Portworx
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Portworx cheatsheet
Harbor
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Harbor
Helm
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Helm
Kubernetes
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Kubernetes
Kubernetes cronjob
How to trigger a Kubernetes cronjob manually
ConfigMap
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Mounting a ConfigMap to an Existing Volume in Kubernetes
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Scheduling
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nodeSelector and nodeAffinity
PodAffinity
Taint and Tolerations
Kubernetes: Evenly Distribution of Pods Across Cluster Nodes
Canary testing
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Kubent
Kubernetes rollout history and rollback
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Kubernetes Network Policy Recipes
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Role Based Access Control RBAC
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Creating A Kubernetes Service Account To Run Pods
Kubernetes Role Based Access Control RBAC
Authorization
Kubernetes namespace deleting stuck in Terminating state
kubectl error: You must be logged in to the server (Unauthorized) – how to fix
Backup and Restore Kubernetes ETCD database
Clean up old containers and images in your kubernetes cluster
Kubernetes CheatSheet
Kubernetes Pod Security Policies explained
Kubernetes copy data between pvc
Kubernetes pvc deleting stuck in Terminating state
Easy way to change namespace in Kubernetes
Pull an Image from a Private Registry
Check PVC usage
Kubernetes NodePort vs LoadBalancer vs Ingress
externalTrafficPolicy
Quota's, Limits and Resources
Upgrade Kubernetes
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Generate TLS Secret for kubernetes
Update cluster DRAFT - NOT TESTED
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GoLang: Using multi-stage builds to create clean Docker images
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Proxmox after install
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Nexus database restore
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Python 3.11, pip and (breaking) system packages
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Running Docker on WSL2 without Docker Desktop
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Redis
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dnsdiag
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Terraform
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Quemu
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Jenkins dump credentials
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Send messages via mail and Slack
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Script to automaticaly install plugins in Jenkins.
Jenkins create git webhook
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Jenkins sources
Monitoring
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Alertmanager
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Test
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Chapter 1
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Chapter 1-1
Chapter 1-2
Chapter 1-3
Chapter 1-4
Chapter 2 (weighted)
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Chapter 2-3 (weight: 10)
Chapter 2-4 (weight: 20)
Chapter 2-2 (weight: 30)
Chapter 2-1 (weight: 40)
Chapter 3 (hierarchized)
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Chapter 3-1
Chapter 3-2
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Chapter 3-2-1
Chapter 3-2-2
Chapter 3-2-3
Chapter 3-2-4
Chapter 3-3
Chapter 3-4
Sample Document
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Blaataap
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Ansible
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Cheatsheet
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Ansible patch single package
Ansible patching or using forked version ansible galaxy role
Ansible pipelining
Ansible register shell output
Ansible run playbook
Ansible with items key and value
Better CLI experience
Cloning private GitHub repositories with Ansible on a remote server through SSH
Certificates
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Certificates Kubernetes
SAN Certificates
Show Certificate info
Certificates
Git
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Quickly import your ssh public keys from Github with ssh-import-id
Unfork a repo on GitHub
Clean up old git branches
Compare encrypted git files
Git errors and how to solve them
How to compare two git branches
Show current git branch with colors in Bash prompt
Git tips
GitHub SSH auth
Linux
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Ubuntu
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How to Enable Minimize on Click on Ubuntu
Split a file in blocks and do something with each block
Hot add memory
How to convert JPG to PDF in Linux
Create Password Protected ZIP in Linux
awk
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Cron
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Sar issue
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Puppet
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Hiera
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Puppet Duplicate Resources with PuppetDB
Ubuntu
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Always connect VPN Ubuntu 19.10
Pulse Audio Bluetooth codecs
Varnish
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Varnish Cheat sheet
Varnish Purge
varnishlog
Markdown
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