2 MDS.

bundle.yaml

@@ -6,7 +6,7 @@
 ##
 
 series: xenial
-description: An eight-machine Kubernetes cluster, appropriate for production. Includes a three-machine etcd and ceph-mon cluster, a Kubernetes master, three Kubernetes worker nodes and a Kubernetes worker with GPUs. The Ceph (Luminous) cluster uses three nodes for Ceph Monitors and a Ceph OSD in LXD containers on each worker machine.
+description: An eight-machine Kubernetes cluster, appropriate for production. Includes a three-machine etcd and ceph-mon cluster, a Kubernetes master, three Kubernetes worker nodes and a Kubernetes worker with GPUs. The Ceph (Luminous) cluster uses three nodes for Ceph Monitors and a Ceph OSD in LXD containers on each worker machine. Two Ceph MDSs provide redundant shared Ceph File System.
 
 # ----------------------------------------------------------------------
 parameters:
@@ -172,11 +172,12 @@ services:
 
   ceph-mds:
     charm: cs:ceph-fs
-    num_units: 1
+    num_units: 2
     bindings:
       "": space-os-mgmt
     to:
       - 'lxd:0'
+      - 'lxd:1'
     annotations:
       gui-x: '1200'
       gui-y: '400'

example.yaml

+apiVersion: v1
+kind: Pod
+metadata:
+  name: web-site
+  labels:
+    app: web
+spec:
+    containers:
+    - name: nginx
+      image: nginx
+      ports:
+      - containerPort: 80