diff --git a/tests/integration/create_cluster/ha_shared_zone/expected-v1alpha2.yaml b/tests/integration/create_cluster/ha_shared_zone/expected-v1alpha2.yaml
index a3031c4084..bdf033c57a 100644
--- a/tests/integration/create_cluster/ha_shared_zone/expected-v1alpha2.yaml
+++ b/tests/integration/create_cluster/ha_shared_zone/expected-v1alpha2.yaml
@@ -16,21 +16,21 @@ spec:
   - cpuRequest: 200m
     etcdMembers:
     - instanceGroup: master-us-test-1a-1
-      name: "1"
+      name: etcd-1
     - instanceGroup: master-us-test-1a-2
-      name: "2"
+      name: etcd-2
     - instanceGroup: master-us-test-1a-3
-      name: "3"
+      name: etcd-3
     memoryRequest: 100Mi
     name: main
   - cpuRequest: 100m
     etcdMembers:
     - instanceGroup: master-us-test-1a-1
-      name: "1"
+      name: etcd-1
     - instanceGroup: master-us-test-1a-2
-      name: "2"
+      name: etcd-2
     - instanceGroup: master-us-test-1a-3
-      name: "3"
+      name: etcd-3
     memoryRequest: 100Mi
     name: events
   iam:
diff --git a/upup/pkg/fi/cloudup/new_cluster.go b/upup/pkg/fi/cloudup/new_cluster.go
index ab1882e6e3..797cbd95f0 100644
--- a/upup/pkg/fi/cloudup/new_cluster.go
+++ b/upup/pkg/fi/cloudup/new_cluster.go
@@ -736,6 +736,13 @@ func trimCommonPrefix(names []string) []string {
 		}
 	}
 
+	for i := range names {
+		_, err := strconv.Atoi(names[i])
+		if err == nil {
+			names[i] = "etcd-" + names[i]
+		}
+	}
+
 	return names
 }
 
diff --git a/upup/pkg/fi/cloudup/new_cluster_test.go b/upup/pkg/fi/cloudup/new_cluster_test.go
index 45b9f27aee..07b8aecff1 100644
--- a/upup/pkg/fi/cloudup/new_cluster_test.go
+++ b/upup/pkg/fi/cloudup/new_cluster_test.go
@@ -49,6 +49,10 @@ func TestRemoveSharedPrefix(t *testing.T) {
 			Input:  []string{"zza", "zzb", ""},
 			Output: []string{"zza", "zzb", ""},
 		},
+		{
+			Input:  []string{"us-test-1a-1", "us-test-1a-2", "us-test-1a-3"},
+			Output: []string{"etcd-1", "etcd-2", "etcd-3"},
+		},
 		{
 			Input:  []string{"us-test-1a-1", "us-test-1b-1", "us-test-1a-2", "us-test-1b-2", "us-test-1a-3"},
 			Output: []string{"a-1", "b-1", "a-2", "b-2", "a-3"},