Introducing Kubernetes API objects
Kubernetes defines an API that is used to manage different types of objects or resources, as they are also known. Some of the most commonly used types, or kinds, as referred to in the API, are as follows:
- Node: A node represents a server, virtual or physical, in the cluster.
- Pod: A Pod represents the smallest possible deployable component in Kubernetes, consisting of one or more co-located containers. The containers share the same IP address and port range. This means that containers in the same Pod instance can talk to each other over localhost, but need to be aware of potential port collisions. Typically, a Pod consists of one container, but there are use cases for extending the functionality of the main container by running the second container in a Pod. In Chapter 18, Using a Service Mesh to Improve Observability and Management, a second container will be used in the Pods, running a sidecar that makes the main container join the service mesh.
- Deployment...
