Kubernetes (K8s)

[nicholasjhenry]

an open-source system for automating deployment, scaling, and management of containerized applications.

https://kubernetes.io

Links

• https://github.com/nicholasjhenry/kubernetes-playground
• https://www.theguild.nl/real-world-phoenix-lets-d4y-using-k8s/
• https://www.digitalocean.com/community/tutorials/how-to-develop-applications-on-kubernetes-with-okteto

Plan

• [ ] Read https://kubectl.docs.kubernetes.io
• [ ] Create a minimum Phoenix app with no Ecto/Webpack etc and deploy to Digital Ocean Kubernetes cluster.

Concepts

https://kubernetes.io/docs/concepts/

• Overview
  • [x] What is Kubernetes?
  • [x] Kubernetes Components
  • [x] The Kubernetes API
  • [x] Working with Kubernetes Objects
  • [x] Understanding Kubernetes Objects
  • [x] Kubernetes Object Management
  • [x] Object Names and IDs
  • [x] Namespaces
  • [x] Labels and Selectors
  • [x] Annotations
  • [x] Field Selectors
  • [x] Recommended Labels
• Cluster Architecture
  • [ ] Nodes
  • [ ] Control Plane-Node Communication
  • [ ] Controllers
  • [ ] Cloud Controller Manager
• Containers
  • [ ] Containers overview
  • [ ] Images
  • [ ] Container Environment
  • [ ] Runtime Class
  • [ ] Container Lifecycle Hooks
• Services, Load Balancing, and Networking
  • [ ] Service
  • [ ] Service Topology
  • [ ] EndpointSlices
  • [ ] DNS for Services and Pods
  • [ ] Connecting Applications with Services
  • [ ] Ingress
  • [ ] Ingress Controllers
  • [ ] Network Policies
  • [ ] Adding entries to Pod /etc/hosts with HostAliases
  • [ ] IPv4/IPv6 dual-stack
• Storage
  • [ ] Volumes
  • [ ] Persistent Volumes
  • [ ] Volume Snapshots
  • [ ] CSI Volume Cloning
  • [ ] Storage Classes
  • [ ] Volume Snapshot Classes
  • [ ] Dynamic Volume Provisioning
  • [ ] Node-specific Volume Limits
• Configuration
  • [ ] Configuration Best Practices
  • [ ] ConfigMaps
  • [ ] Secrets
  • [ ] Managing Resources for Containers
  • [ ] Pod Overhead
  • [ ] Resource Bin Packing for Extended Resources
  • [ ] Organizing Cluster Access Using kubeconfig Files
  • [ ] Pod Priority and Preemption
• Security
  • [ ] Overview of Cloud Native Security
  • [ ] Pod Security Standards
• Policies
  • [ ] Limit Ranges
  • [ ] Resource Quotas
  • [ ] Pod Security Policies
• Scheduling and Eviction
  • [ ] Kubernetes Scheduler
  • [ ] Taints and Tolerations
  • [ ] Assigning Pods to Nodes
  • [ ] Scheduling Framework
  • [ ] Scheduler Performance Tuning

Tasks

https://kubernetes.io/docs/tasks/

• [ ] Configure Pods and Containers
• [ ] Manage Kubernetes Objects
• [ ] Inject Data Into Applications
• [ ] Run Applications
• [ ] Run Jobs
• [ ] Access Applications in a Cluster
• [ ] Monitoring, Logging, and Debugging

[nicholasjhenry]

Completed Tutorial Clueful Elixir with Kubernetes at ElixirConf EU 2020.

[nicholasjhenry]

Completed How To Develop Applications on Kubernetes with Okteto