Split brain protection in computer clusters
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United States of America Patent
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Sep 29, 2015
Grant Date -
Oct 10, 2013
app pub date -
Apr 9, 2012
filing date -
Apr 9, 2012
priority date (Note) -
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Abstract
A computer cluster can be divided into a plurality of failure scopes and a voting constraint can be enforced. The voting constraint can allow a portion of the cluster to provide the service if a majority of health votes from cluster members is obtained by that portion. A loss of connectivity between a first failure scope, which has a majority of cluster members in the cluster, and one or more other failure scopes in the cluster can be detected. The loss of connectivity can be such that the first failure scope does not have connectivity to a member in any other failure scope in the cluster. In response to detecting the loss of connectivity, a split brain situation in the cluster can be automatically protected against by preventing the first failure scope from providing the service.
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