Cluster Computing

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See Cluster Computing for a definition Engineering a Beowulf-style Compute Cluster

What is a Cluster

A cluster is a setup of two or more computers - called nodes - that work together to perform a task.

Types of clusters

Basically there are four type of clusters:

Types of clusters
Storage Clusters Shared filesystem among nodes
High Availability Clusters Failover, redundancy
Load Balancing Clusters Distribute Load between two or more nodes
High Performance Clusters Parallel computing, more nodes solving the same problem

Often you would need a combination of these Clusters in a installation.

Storage Clusters

High Availability Clusters

Load Balancing Clusters

Load balancing with Cisco IOS NAT

High Performance Clusters

While there are several systems for cluster computing. OSCAR is very popular.

Grid computing

For example seti@home

Examples of cluster solutions

OSCAR

Diskless nodes

Quorum Disc

Concepts and abbreviations

Fencing

When a node fails in a cluster, the node is fenced, which means it will be rejected from shared resources.

Links

OpenAIS