Red Hat Cluster Suite

Red Hat Cluster Suite

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Red Hat Cluster Suite


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What is Red Hat Cluster Suite?

Clustered systems provide reliability, scalability, and availability to critical production services. Using Red Hat Cluster Suite, the user can create a cluster to suit an organization's needs for performance, high availability, load balancing, scalability, file sharing, and economy.

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Product Details

What is Red Hat Cluster Suite?

RHCS consists of the following major components:
  • Cluster infrastructure — Provides fundamental functions for nodes to work together as a cluster: configuration-file management, membership management, lock management, and fencing.
  • High-availability Service Management — Provides failover of services from one cluster node to another in case a node becomes inoperative.
  • Cluster administration tools — Configuration and management tools for setting up, configuring, and managing a Red Hat cluster. The tools are for use with the Cluster Infrastructure components, the High-availability and Service Management components, and storage.
  • Linux Virtual Server (LVS) — Routing software that provides IP-Load-balancing. LVS runs in a pair of redundant servers that distributes client requests evenly to real servers that are behind the LVS servers.

The user can supplement Red Hat Cluster Suite with the following components, which are part of an optional package (and not part of Red Hat Cluster Suite):
  • GFS — GFS (Global File System) or GFS2 (Global File System 2) provides a cluster file system for use with Red Hat Cluster Suite. GFS/GFS2 allows multiple nodes to share storage at a block level as if the storage were connected locally to each cluster node.
  • Cluster Logical Volume Manager (CLVM) — Provides volume management of cluster storage.
  • Global Network Block Device (GNBD) — An ancillary component of GFS/GFS2 that exports block-level storage to Ethernet. This is presented as an economical way to make block-level storage available to GFS/GFS2.

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