= Cloud Screens :page-shortname: cloud-screens :page-permalink: cloud-screens.html // Licensed to the Apache Software Foundation (ASF) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you 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. When running in <> mode, a "Cloud" option will appear in the Admin UI between <> and <>. This screen provides status information about each collection & node in your cluster, as well as access to the low level data being stored in <>. .Only Visible When using SolrCloud [NOTE] ==== The "Cloud" menu option is only available on Solr instances running in <>. 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. 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: image::images/cloud-screens/cloud-graph.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: 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.