Summary

In this chapter, we’ve seen Kubernetes’ self-healing capabilities in action and how K8s reconciliation loops allow it to reach the desired state of resources in a very short time. Since Pods themselves do not have any means to recover from a failure, we commonly use Kubernetes Deployments to ensure that the requested number of application replicas are running. Deployments also allow us to perform controllable rolling updates, rollbacks, and zero-downtime deployments to enable rapid software development cycles that require the frequent release of versions.

DaemonSet is another resource for the scenario when we need to run one replica of the application on each or a particular set of nodes. DaemonSets are often used for running logging or monitoring agents across the cluster.

StatefulSet is a resource for managing stateful workloads with Kubernetes. It allows us to easily integrate volumes to Pods to keep persistent data between container restarts and automate...