List of Figures

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Figure 2-1. Software Layers

Figure 3-1. Administrative Communication within One Node

Figure 3-2. Daemon Communication within One Node

Figure 3-3. Communication between Nodes in the Pool

Figure 3-4. Communication for a Node Not in the Cluster

Figure 3-5. Administrative Communication within One Node under Coexecution

Figure 3-6. Daemon Communication within One Node under Coexecution

Figure 5-1. One Node is Out of Date: Most Recent Log is Replicated

Figure 5-2. Unequally Sized Pools are Joined: Larger Pool Log is Replicated

Figure 5-3. Equally Sized Pools are Joined: Lowest Node ID Log is Replicated

Figure 5-4. Example Memberships in a Coexecution Cluster

Figure 5-5. FailSafe Tiebreaker Node

Figure 5-6. Forming a Membership without the FailSafe Tiebreaker

Figure 6-1. Message Paths for Action Scripts and Failover Policy Scripts