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The cluster manager works together with a cluster management agent. These agents run on each node of the cluster to manage and configure services, a set of services, or to manage and configure the complete cluster server itself (see supercomputing.) In some cases the cluster manager is mostly used to dispatch work for the cluster (or cloud) to ...
Aspen Systems Inc - Aspen Cluster Management Environment (ACME) Borg, used at Google; Bright Cluster Manager, from Bright Computing; ClusterVisor, [2] from Advanced Clustering Technologies [3] CycleCloud, from Cycle Computing acquired By Microsoft; Komodor, Enterprise Kubernetes Management Platform; Dell/EMC - Remote Cluster Manager (RCM)
Borg is a cluster manager used by Google since 2008 or earlier. [ 1 ] [ 2 ] It led to widespread use of similar approaches, such as Docker and Kubernetes . [ 3 ]
The API server uses etcd's watch API to monitor the cluster, roll out critical configuration changes, or restore any divergences of the state of the cluster back to the desired state as declared in etcd. As an example, a human operator may specify that three instances of a particular "pod" (see below) need to be running, and etcd stores this fact.
It is also sold bundled with Storage Foundation as Storage Foundation HA for Windows; Veritas Cluster Server for AIX, HP-UX, Linux, and Solaris is supplied as a standalone product. The Veritas Cluster Server product includes VCS Management Console, which is multi-cluster management software that automates disaster recovery across data centers.
The average silhouette of the data is another useful criterion for assessing the natural number of clusters. The silhouette of a data instance is a measure of how closely it is matched to data within its cluster and how loosely it is matched to data of the neighboring cluster, i.e., the cluster whose average distance from the datum is lowest. [8]
Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some specific sense defined by the analyst) to each other than to those in other groups (clusters).
A business cluster is a geographic concentration of interconnected businesses, suppliers, and associated institutions in a particular field.Clusters are considered to increase the productivity with which companies can compete, nationally and globally.