[ZEPPELIN-5801] add configuration_storage.md and rename storage.md to…

… notebook_storage.md (apache#4446)

Co-authored-by: zhangkunyuan <[email protected]>

docs/setup/storage/configuration_storage.md

@@ -0,0 +1,65 @@
+---
+layout: page
+title: "Configuration Storage for Apache Zeppelin"
+description: "Configuration Storage for Apache Zeppelin"
+group: setup/storage
+---
+<!--
+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.
+-->
+{% include JB/setup %}
+
+# Configuration Storage for Apache Zeppelin
+
+<div id="toc"></div>
+
+## Overview
+Zeppelin has lots of configuration which is stored in files:
+- `interpreter.json` (This file contains all the interpreter setting info)
+- `notebook-authorization.json` (This file contains all the note authorization info)
+- `credential.json` (This file contains the credential info)
+
+## Configuration Storage in hadoop compatible file system
+
+Set following properties in `zeppelin-site.xml`:
+```xml
+<property>
+    <name>zeppelin.config.storage.class</name>
+    <value>org.apache.zeppelin.storage.FileSystemConfigStorage</value>
+    <description>configuration persistence layer implementation</description>
+</property>
+<property>
+    <name>zeppelin.config.fs.dir</name>
+    <value></value>
+    <description>path on the hadoop compatible file system</description>
+</property>
+```
+Also specify `HADOOP_CONF_DIR` in `zeppelin-env.sh` so that Zeppelin can find the right hadoop configuration files.
+
+If your hadoop cluster is kerberized, then you need to specify `zeppelin.server.kerberos.keytab` and `zeppelin.server.kerberos.principal`
+
+
+## Configuration Storage in local file system
+By default, zeppelin store configuration on local file system.
+```xml
+<property>
+    <name>zeppelin.config.storage.class</name>
+    <value>org.apache.zeppelin.storage.LocalConfigStorage</value>
+    <description>configuration persistence layer implementation</description>
+</property>
+<property>
+    <name>zeppelin.config.fs.dir</name>
+    <value></value>
+    <description>path on local file system</description>
+</property>
+```

docs/setup/storage/storage.md → docs/setup/storage/notebook_storage.md

@@ -1,7 +1,7 @@
 ---
 layout: page
 title: "Notebook Storage for Apache Zeppelin"
-description: Apache Zeppelin has a pluggable notebook storage mechanism controlled by zeppelin.notebook.storage configuration option with multiple implementations."
+description: "Apache Zeppelin has a pluggable notebook storage mechanism controlled by zeppelin.notebook.storage configuration option with multiple implementations."
 group: setup/storage
 ---
 <!--