There are multiple Kubernetes resources for Pod management. Users are encouraged to leverage various types of resources to meet different purposes. Let's comparing the resource types listed below with ReplicaSet:
- Deployment: In general cases, Kubernetes Deployments are used together with ReplicaSet for complete Pod management: container rolling updates, load balancing, and service exposing.
- Job: Sometimes, we want the Pods run as a job instead of a service. A Kubernetes job is suitable for this situation. You can consider it a ReplicaSet with the constraint of termination.
- DaemonSet: More than ReplicaSet, the Kubernetes DaemonSet guarantees that the specified set is running on every node in the cluster. That said, a subset of ReplicaSet on every node.
To get more idea and instruction, you can check the recipe Ensuring flexible usage of your containers in Chapter 14, Playing with Containers.