Initialize Paxos quorum to 0 until this node needs to request consensus.

With a 0 quorum we will participate in voting, but will not actively
try to form a ring.

ipam/allocator.go

@@ -86,7 +86,7 @@ func NewAllocator(config Config) *Allocator {
 	if config.IsObserver {
 		participant = paxos.NewObserver()
 	} else {
-		participant = paxos.NewNode(config.OurName, config.OurUID, 1)
+		participant = paxos.NewNode(config.OurName, config.OurUID, 0)
 	}
 	return &Allocator{
 		ourName:     config.OurName,

ipam/paxos/paxos.go

@@ -241,6 +241,9 @@ func (node *Node) pickValue() Value {
 
 // Has a consensus been reached, based on the known claims of other nodes?
 func (node *Node) Consensus() (bool, AcceptedValue) {
+	if node.quorum == 0 {
+		return false, AcceptedValue{}
+	}
 	counts := map[ProposalID]uint{}
 
 	for _, claims := range node.knows {