cassandra: documentation for scale down action

Signed-off-by: Yannis Zarkadas <yanniszarkadas@gmail.com>

Documentation/cassandra-cluster-crd.md

@@ -1,3 +1,9 @@
+---
+title: Cassandra Cluster
+weight: 36
+indent: true
+---
+
 # Cassandra Cluster CRD
 
 Cassandra database clusters can be created and configuring using the `clusters.cassandra.rook.io` custom resource definition (CRD).

Documentation/cassandra.md

@@ -1,4 +1,10 @@
-# Quickstart
+---
+title: Cassandra
+weight: 7
+indent: true
+---
+
+# Cassandra Quickstart
 
 [Cassandra](http://cassandra.apache.org/) is a highly available, fault tolerant, peer-to-peer NoSQL database featuring lightning fast performance and tunable consistency. It provides massive scalability with no single point of failure.
 
@@ -83,9 +89,28 @@ To get a cqlsh shell in your new Cluster:
 
 ## Scale Up
 
-The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use `kubectl edit clusters.cassandra.rook.io rook-cassandra`:
+The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use:
+ ```console
+ kubectl edit clusters.cassandra.rook.io rook-cassandra
+ ```
  * To scale up a rack, change the `Spec.Members` field of the rack to the desired value.
  * To add a new rack, append the `racks` list with a new rack. Remember to choose a different rack name for the new rack.
+ * After editing and saving the yaml, check your cluster's Status and Events for information on what's happening:  
+ ```console
+ kubectl -n rook-cassandra describe clusters.cassandra.rook.io rook-cassandra 
+ ```
+ 
+## Scale Down
+
+The operator supports scale down of a rack. To make the changes, you can use:
+ ```console
+ kubectl edit clusters.cassandra.rook.io rook-cassandra
+ ```
+ * To scale down a rack, change the `Spec.Members` field of the rack to the desired value.
+ * After editing and saving the yaml, check your cluster's Status and Events for information on what's happening:
+ ```console
+ kubectl -n rook-cassandra describe clusters.cassandra.rook.io rook-cassandra
+ ```
   
 ## Clean Up
  

Documentation/ceph-cluster-crd.md

@@ -1,6 +1,6 @@
 ---
 title: Ceph Cluster
-weight: 32
+weight: 31
 indent: true
 ---
 

Documentation/ceph-filesystem-crd.md

@@ -1,6 +1,6 @@
 ---
 title: Ceph Shared File System
-weight: 36
+weight: 35
 indent: true
 ---
 {% assign url = page.url | split: '/' %}

Documentation/ceph-object-store-crd.md

@@ -1,6 +1,6 @@
 ---
 title: Ceph Object Store
-weight: 34
+weight: 33
 indent: true
 ---
 

Documentation/ceph-object-store-user-crd.md

@@ -1,6 +1,6 @@
 ---
 title: Ceph Object Store User
-weight: 35
+weight: 34
 indent: true
 ---
 

Documentation/ceph-pool-crd.md

@@ -1,6 +1,6 @@
 ---
 title: Ceph Block Pool
-weight: 33
+weight: 32
 indent: true
 ---
 

Documentation/quickstart-toc.md

@@ -16,3 +16,4 @@ Rook provides growing number of storage providers to a Kubernetes cluster, each
 | [CockroachDB](cockroachdb.md) | Alpha | CockroachDB is a cloud-native SQL database for building global, scalable cloud services that survive disasters.  |
 | [EdgeFS](edgefs-quickstart.md) | Alpha | EdgeFS is high-performance and low-latency object storage system with Geo-Transparent data access via standard protocols (S3, NFS, iSCSI) from on-prem, private/public clouds or small footprint edge (IoT) devices. |
 | [Minio](minio-object-store.md) | Alpha | Minio is a high performance distributed object storage server, designed for large-scale private cloud infrastructure. |
+| [Cassandra](cassandra.md) | Alpha | Cassandra is a highly available NoSQL database featuring lightning fast performance, tunable consistency and massive scalability.|