Linux Replicated High Availability Manager 1.4.2 (DRBD 8.2 based branch)

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04-15-2008

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Linux Replicated High Availability Manager 1.4.2 (DRBD 8.2 based branch)

The Linux Replicated High Availability Manager (Linuxha.net) allows the creation of clusters for application high availability through data replication. Currently, clusters are limited to two nodes, but multiple applications can be hosted and failed-over between the nodes. The software uses DRBD to provide the data replication facillity. License: GNU General Public License v2 Changes:
Many minor and major bugs have been fixed. The administrators guide documentation has been updated to reflect these changes and several other improvements.

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cm

cm(5)								File Formats Manual							     cm(5)

NAME

       cm - cluster monitor for high availability clusters

   Remarks
       Cluster	operations require the installation of the optional Serviceguard or Serviceguard Extension for RAC software, which is not included
       in the standard HP-UX operating system.

DESCRIPTION

       Serviceguard and Serviceguard Extension for RAC are high availability products which provide an environment such that after a failure of  a
       node,  services	(applications)	can be up and running again on another node within a very short amount of time.  In addition, Serviceguard
       Extension for RAC is the enabling software for the Real Application Clusters (RAC).  Working with the basic Serviceguard product,  Service-
       guard Extension for Faster Failover allows configuration of clusters for optimized failover.

   Commands
       The following set of commands is used to configure a high availability cluster:

		     cmquerycl(1M)
		     cmmakepkg(1M)
		     cmcheckconf(1M)
		     cmapplyconf(1M)

       The following commands are used to run or halt a cluster:

		     cmruncl(1M)
		     cmhaltcl(1M)
		     cmrunnode(1M)
		     cmhaltnode(1M)
		     cmviewcl(1M)

       Once a cluster is formed, the following commands are provided for manual operation on high availability packages:

		     cmrunpkg(1M)
		     cmhaltpkg(1M)
		     cmmodpkg(1M)

       The following commands are used within a package control script to control the services and networks configured for a package:

		     cmrunserv(1M)
		     cmhaltserv(1M)
		     cmmodnet(1M)

       A command is provided to aid in migrating from a SwitchOver/UX configuration to a Serviceguard cluster:

		     cmmigrate(1M)

       This command is not applicable with Serviceguard Extension for RAC.

SEE ALSO

       Managing Serviceguard.
       Configuring RAC Clusters with Serviceguard Extension for RAC.

						      Requires Optional Serviceguard Software						     cm(5)

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