GlossaryΒΆ
- ReplicaSet
Formerly a replication controller, kube hides this transition from you and exposes this only under the
kube.ReplicaSetViewandkube.ReplicaSetItemnames.A replica set ensures a specified number of identical Pod instances are running by starting and stopping pods as required while watching for failed pods. See http://kubernetes.io/docs/user-guide/replication-controller/ for full details.
- ReplicationController
- The old name for a ReplicaSet. The main difference is that the labelSelector for a ReplicationController can only select equality-based label sets. See https://kubernetes.io/docs/user-guide/replication-controller/ for details.
- DaemonSet
- A DaemonSet ensures that all (or some) nodes run a copy of a pod. As nodes are added to the cluster, pods are added to them. As nodes are removed from the cluster, those pods are garbage collected. See https://kubernetes.io/docs/admin/daemons/ for full details.
- Deployment
- A Deployment provides declarative updates for Pods and Replica Sets. You only need to describe the desired state in a Deployment object, and the Deployment controller will change the actual state to the desired state at a controlled rate for you. See https://kubernetes.io/docs/user-guide/deployments/ for full details.
- Pod
- A pod is the smallest unit to run containers in the cluster. It is a co-located group of containers and volumes. See http://kubernetes.io/docs/user-guide/pods/ for the full details on pods.
- Service
- A service groups a set of pods and makes them accessible via a single IP address and DNS name. See http://kubernetes.io/docs/user-guide/services/ for the full details on services.
- Secret
- A secret stores sensitive data like authentication tokens which containers can then use. See http://kubernetes.io/docs/user-guide/secrets/ for the full details on secrets.
- labelSelector
- Many objects in the Kubernetes clusters have labels associated with them. These can often be used to select a number of target objects and there is a fairly rich selector language to target objects using labels. See http://kubernetes.io/docs/user-guide/labels/#label-selectors for the full details on selectors.