Fix ceph single node gate health

Ceph's health when running in the single node gate currently
is 'HEALTH_WARN'.  This PS adds an extra config option such that
the ceph cluster will not attempt to perform replication when deployed
on a single node, as well as introduces a mvp yaml file for ceph
deployments in the gate.

Change-Id: Ib2ec3345140f541c94da044ff9d77723ea3ee2bd

ceph/templates/etc/_ceph.conf.tpl

@@ -48,6 +48,7 @@ osd_max_object_name_len = {{ .Values.conf.ceph.config.osd.osd_max_object_name_le
 # crush
 osd_pool_default_crush_rule = {{ .Values.conf.ceph.config.osd.osd_pool_default_crush_rule | default "0" | quote }}
 osd_crush_update_on_start = {{ .Values.conf.ceph.config.osd.osd_crush_update_on_start | default "true" | quote }}
+osd_crush_chooseleaf_type = {{ .Values.conf.ceph.config.osd.osd_crush_chooseleaf_type | default "1" | quote }}
 
 # backend
 osd_objectstore = {{ .Values.conf.ceph.config.osd.osd_objectstore | default "filestore" | quote }}

ceph/values.yaml

@@ -160,6 +160,7 @@ conf:
         #crush
         osd_pool_default_crush_rule: 0
         osd_crush_update_on_start: true
+        osd_crush_chooseleaf_type: 1
         #backend
         osd_objectstore: filestore
         #performance tuning

tools/gate/basic_launch.sh

@@ -49,11 +49,20 @@ EOF"
   export osd_cluster_network=${SUBNET_RANGE}
   export osd_public_network=${SUBNET_RANGE}
 
-  helm install --namespace=ceph ${WORK_DIR}/ceph --name=ceph \
-    --set manifests_enabled.client_secrets=false \
-    --set network.public=$osd_public_network \
-    --set network.cluster=$osd_cluster_network \
-    --set bootstrap.enabled=true
+  if [ "x$INTEGRATION" == "xaio" ]; then
+    helm install --namespace=ceph ${WORK_DIR}/ceph --name=ceph \
+      --set manifests_enabled.client_secrets=false \
+      --set network.public=$osd_public_network \
+      --set network.cluster=$osd_cluster_network \
+      --set bootstrap.enabled=true \
+      --values=${WORK_DIR}/tools/overrides/mvp/ceph.yaml
+  else
+    helm install --namespace=ceph ${WORK_DIR}/ceph --name=ceph \
+      --set manifests_enabled.client_secrets=false \
+      --set network.public=$osd_public_network \
+      --set network.cluster=$osd_cluster_network \
+      --set bootstrap.enabled=true
+  fi
 
   kube_wait_for_pods ceph 600
 

tools/overrides/mvp/ceph.yaml

@@ -0,0 +1,21 @@
+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+conf:
+  ceph:
+    config:
+      global:
+        osd_pool_default_size: 1
+      osd:
+        osd_crush_chooseleaf_type: 0