Overview
What Is a Pod?
Pods are the smallest deployable units of computing that you can create and manage. A pod is a group of one or more containers, with shared storage, a unique IP address, and a specification for how to run the containers.
Pods can be used in either of the following ways:
- A pod runs a single container. This is the most common use case. You can consider a pod as a wrapper around a single container. Pods can be managed directly rather than containers.
- A pod runs multiple containers that need to work together. In this scenario, a pod can encapsulate an application that is running in a main container and several sidecar containers. As shown in Figure 1, the main container serves as a web server that provides file services from a fixed directory, and the sidecar container periodically downloads files to the directory.
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