試験KCNA トピック2 問題13 スレッド

A. By using the 'replicas' field in the Deployment configuration, Kubernetes ensures that multiple instances of the application are running across different nodes. If one node fails, the Pods running on that node are automatically restarted on other healthy nodes.

B. Kubernetes uses a distributed consensus algorithm called etcd to store the state of the cluster. This ensures that even if one node fails, the other nodes have access to the latest state information and can continue to operate-

C. Kubernetes automatically scales up the number of Pods running in a Deployment if a node fails- This ensures that there are enough Pods to handle the workload

D. Kubernetes uses a technique called rolling updates to ensure that the application remains available during deployments. This means that new Pods are deployed and brought online gradually, while old Pods are gracefully shut down.

E. Kubernetes uses a combination of the 'replicas' field, the etcd distributed database, and the self-healing capabilities of the platform to ensure the high availability of Deployments in a multi-node cluster.