VOTEQUORUM_OVERVIEW(8)				    Corosync Cluster Engine Programmer's Manual 			    VOTEQUORUM_OVERVIEW(8)

NAME

       votequorum_overview - Votequorum Library Overview

OVERVIEW

       The  votequorum library is delivered with the corosync project. It is the external interface to the vote-based quorum service. This service
       is optionally loaded into all nodes in a corosync cluster to avoid split-brain situations. It  does  this  by  having  a  number  of  votes
       assigned  to  each system in the cluster and ensuring that only when a majority of the votes are present, cluster operations are allowed to
       proceed.

       The library provides a mechanism to:

       * Query the quorum status

       * Get a list of nodes known to the quorum service

       * Receive notifications of quorum state changes

       * Change the number of votes assigned to a node

       * Change the number of expected votes for a cluster to be quorate

       * Connect an additional quorum device to allow small clusters to remain quorate during node outages.

BUGS

       No known bugs at the time of writing. The authors are from outerspace. Deal with it.

SEE ALSO

       corosync-quorumtool(8), votequorum(5), votequorum_initialize(3), votequorum_finalize(3),  votequorum_getinfo(3),  votequorum_trackstart(3),
       votequorum_trackstop(3),   votequorum_fd_get(3),  votequorum_dispatch(3),  votequorum_context_set(3),  votequorum_context_get(3),  votequo-
       rum_setexpected(3), votequorum_setvotes(3)

corosync Man Page						    2012-01-12						    VOTEQUORUM_OVERVIEW(8)