Kubernetes Pod and Container Concepts: Difference between revisions
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==Pod Lifecycle== | ==Pod Lifecycle== | ||
===Pod Phases=== | |||
==Pods and Nodes== | ==Pods and Nodes== | ||
Revision as of 18:22, 24 September 2021
External
- https://kubernetes.io/docs/concepts/workloads/pods/ (fully synced ✓)
Internal
Overview
A pod is the fundamental, atomic compute unit created and managed by Kubernetes. A pod groups together one or more containers. Pods are deployed on worker nodes. A pod has a well defined lifecycle with several phases, and the pod's containers can be in one of a small number of states.
Pod
A pod is a group of one or more containers Kubernetes deploys and manages a compute unit, and the specification for how to run the containers. Kubernetes will not manage compute entities with smaller granularity, such as containers or processes.
The containers of a pod are atomically deployed and managed as a group. A useful mental model when thinking of a pod is that of a logical host, where all its containers share a context.
Pod Operation Atomicity
The containers in a pod share network resources and storage. From this perspective, a pod can be thought of as a logical host with all its processes (containers) sharing the network stack and the storage available to the host.
Pod Lifecycle
Pod Phases
Pods and Nodes
Pods and Containers
Container
TODO:
Container Types
Application Container
Init Container
Ephemeral Container
Container States
Container Probes
Summary of a relationship between container probe result and overall pod situation.