Oracle Clusterware
Split Brain Resolution
● When interconnect breaks – keeps the largest cluster possible up, other nodes
will be evicted, in 2 node cluster,需要借助Voting Disk来仲裁
● IO Fencing similar to the Stonith algorithm
● Voting disk is used to detect network problems that could lead to a split-brain
● Final arbiter of the status of configured nodes, either up or down, and delivers
eviction notices
● Recommended to have at least 3 voting disks
● Standard NFS support for 3
rd
voting disk on Linux, AIX, or Solaris