SOLR-12576: Update ref guide for additional information displayed in cloud view

solr/CHANGES.txt

@@ -162,6 +162,8 @@ Bug Fixes
 * SOLR-12570: OpenNLPExtractNamedEntitiesUpdateProcessor cannot support multi fields because pattern replacement
   doesn't work correctly. (Koji Sekiguchi)
 
+* SOLR-12576: Update ref guide for additional information displayed in cloud view (Erick Erickson)
+
 Optimizations
 ----------------------
 

solr/solr-ref-guide/src/cloud-screens.adoc

@@ -16,7 +16,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
-When running in <<solrcloud.adoc#solrcloud,SolrCloud>> mode, a "Cloud" option will appear in the Admin UI between <<logging.adoc#logging,Logging>> and <<collections-core-admin.adoc#collections-core-admin,Collections/Core Admin>>.
+When running in <<solrcloud.adoc#solrcloud,SolrCloud>> mode, a "Cloud" option will appear in the Admin UI between <<logging.adoc#logging,Logging>> and <<collections-core-admin.adoc#collections-core-admin,Collections>>.
 
 This screen provides status information about each collection & node in your cluster, as well as access to the low level data being stored in <<using-zookeeper-to-manage-configuration-files.adoc#using-zookeeper-to-manage-configuration-files,ZooKeeper>>.
 
@@ -26,18 +26,22 @@ This screen provides status information about each collection & node in your clu
 The "Cloud" menu option is only available on Solr instances running in <<getting-started-with-solrcloud.adoc#getting-started-with-solrcloud,SolrCloud mode>>. Single node or master/slave replication instances of Solr will not display this option.
 ====
 
-Click on the Cloud option in the left-hand navigation, and a small sub-menu appears with options called "Tree", "Graph", "Graph (Radial)" and "Dump". The default view ("Graph") shows a graph of each collection, the shards that make up those collections, and the addresses of each replica for each shard.
+Click on the Cloud option in the left-hand navigation, and a small sub-menu appears with options called "Tree", "Graph", and "Graph (Radial)". The default view ("Graph") shows a graph of each collection, the shards that make up those collections, and the addresses and type ("NRT", "TLOG" or "PULL") of each replica for each shard.
 
-This example shows the very simple two-node cluster created using the `bin/solr -e cloud -noprompt` example command. In addition to the 2 shard, 2 replica "gettingstarted" collection, there is an additional "films" collection consisting of a single shard/replica:
+This example shows a simple cluster. In addition to the 2 shard, 2 replica "gettingstarted" collection, there is an additional "tlog" collection consisting of mixed TLOG and PULL replica types.
 
 image::images/cloud-screens/cloud-graph.png[image,width=512,height=250]
 
+Tooltips appear when hovering over each replica giving additional information.
+
+image::images/cloud-screens/cloud-hover.png[image,width=512,height=250]
+
 The "Graph (Radial)" option provides a different visual view of each node. Using the same example cluster, the radial graph view looks like:
 
 image::images/cloud-screens/cloud-radial.png[image,width=478,height=250]
 
-The "Tree" option shows a directory structure of the data in ZooKeeper, including cluster wide information regarding the `live_nodes` and `overseer` status, as well as collection specific information such as the `state.json`, current shard leaders, and configuration files in use. In this example, we see the `state.json` file definition for the "films" collection:
+The "Tree" option shows a directory structure of the data in ZooKeeper, including cluster wide information regarding the `live_nodes` and `overseer` status, as well as collection specific information such as the `state.json`, current shard leaders, and configuration files in use. In this example, we see part of the `state.json`  definition for the "tlog" collection:
 
 image::images/cloud-screens/cloud-tree.png[image,width=487,height=250]
 
-The final option is "Dump", which returns a JSON document containing all nodes, their contents and their children (recursively). This can be used to export a snapshot of all the data that Solr has kept inside ZooKeeper and can aid in debugging SolrCloud problems.
+As an aid to debugging, the data shown in the "Tree" view can be exported locally using the following command `bin/solr zk ls -r /`