Merge pull request #1499 from weaveworks/1463-ipam-seed-mismatch

detect when IPAM has been seeded by different peers

test/180_ipalloc_seed_mismatch_3.sh

@@ -0,0 +1,28 @@
+#! /bin/bash
+
+. ./config.sh
+
+start_suite "IPAM ring seed mismatch"
+
+weave_on $HOST1 launch-router --no-discovery
+weave_on $HOST2 launch-router --no-discovery
+weave_on $HOST3 launch-router --no-discovery
+
+# Do some allocations to get the ring initialized on two hosts
+start_container $HOST1
+start_container $HOST2
+
+# Connect 2 to 3 and allocate so they will each have half the ring
+weave_on $HOST2 connect $HOST3
+start_container $HOST3
+
+# More allocations on 1 to increase the version number
+start_container $HOST1
+start_container $HOST1
+
+weave_on $HOST1 connect $HOST3
+
+# Check that weave on 3 is still running
+assert_raises "weave_on $HOST3 status"
+
+end_suite