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| − | = Redhat Clustering =
| + | #Redirect [[CentOS_cluster_computing]] |
| − | == Abbreviations and systems ==
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| − | {|border=1 ;style="margin: 0 auto; text-align: center;cellpadding="5" cellspacing="0"
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| − | |+ Redhat Clustering daemons and systems
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| − | |- bgcolor=lightgrey
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| − | ! System!! Meaning !! Runs on
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| − | |-
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| − | | [[CCS]] || Cluster Configuration System || Each node
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| − | | [[CLVM]] || Cluster Logical Volume Manager. Provides volume management to nodes. || Each node
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| − | |-
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| − | | [[CMAN]] || Cluster Manager || Each node
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| − | |-
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| − | | [[DLM]] || Distributed Lock Manager || Each node
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| − | |-
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| − | | [[fenced]] || Fence Daemon - The [[DLM]] Distributed Lock manager daemon || Each node
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| − | | [[GFS]] || Global File System. Shared storage among nodes. || Each node
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| − | | [[GNDB]] || Global Network Block Device. Low level storage access over Ethernet || GFS server
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| − | | [[LVS]] || [http://www.linuxvirtualserver.org/ Linux Virtual Server], routing software to privide IP load balancing || On two or more Linux gateways
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| − | |}
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| − | = Red Hat Cluster Suite Introduction =
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| − | Red Hat Cluster Suite (RHCS) is an integrated set of software components that can be deployed in a variety of configurations to suit your needs for performance, high-availability, load balancing, scalability, file sharing, and economy.
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| − | | |
| − | == RHCS consists of the following major components ==
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| − | * Cluster infrastructure — Provides fundamental functions for nodes to work together as a cluster: configuration-file management, membership management, lock management, and fencing.
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| − | * High-availability Service Management — Provides failover of services from one cluster node to another in case a node becomes inoperative.
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| − | * 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 Chapter Infrastructure components, the High-availability and Service Management components, and storage.
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| − | * 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.
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| − | == Additional Cluster Components ==
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| − | You 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):
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| − | * Red Hat GFS (Global File System) — Provides a cluster file system for use with Red Hat Cluster Suite. GFS allows multiple nodes to share storage at a block level as if the storage were connected locally to each cluster node.
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| − | * Cluster Logical Volume Manager (CLVM) — Provides volume management of cluster storage.
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| − | * Global Network Block Device (GNBD) — An ancillary component of GFS that exports block-level storage to Ethernet. This is an economical way to make block-level storage available to Red Hat GFS.
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| − | = OSCAR =
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| − | == Diskless nodes ==
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| − | See [http://web.mst.edu/~vojtat/pegasus/home.htm Pegasus homepage] for ideas to implement a diskless Linux cluster.
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