Day-3: 4.What is pod in Kubernetes. Explain in 15 Points with image as example
Pod is the basic unit of work
It is application or service
Pod is an atomic unit of scheduling in Node
Kubernetes manages pod and not container
Kubernetes job is to keep the pods running based on desired state
- State is the pod up and running
- Health is the application in the pod running
Pod shares the same resource with all containers in it
Pod shares the same IP to all containers in it
Preferred approach is one container in one pod
No pod is ever redeployed (once destroyed, same pod cannot be deployed, rather similar pod can be instantiated)
Pod cannot be create/start/stop.
Pod can be instantiate only (by kubelete)
Inter pod communication through pod network (each pod have it’s on IP)
Intra pod communication is through local host
Each container in a pod is assigned with different port numbers