* </p>
* Configuration of the CephFileSystem is handled via a few Hadoop
* Configuration properties: <br>
- * fs.ceph.monAddr -- the ip address of the monitor to connect to. <br>
+ * fs.ceph.monAddr -- the ip address/port of the monitor to connect to. <br>
* fs.ceph.libDir -- the directory that libceph and libhadoopceph are
* located in. This assumes Hadoop is being run on a linux-style machine
* with names like libceph.so.
conf.setIfUnset("fs.ceph.debug", "false");
fs_default_name = conf.get("fs.default.name");
monAddr = conf.get("fs.ceph.monAddr");
- if (monAddr == NULL) throw new IOException("You must specify a Ceph monito address!");
+ if (monAddr == null) throw new IOException("You must specify a Ceph monitor address!");
cephDebugLevel = conf.get("fs.ceph.debugLevel");
debug = ("true".equals(conf.get("fs.ceph.debug")));
// Initializes the client
--- /dev/null
+<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.
+-->
+
+<head></head>
+<body>
+<h1>A client for the Ceph filesystem</h1>
+
+<h3>Introduction</h3>
+
+This page describes how to use <a href="http://ceph.newdream.net"> Ceph </a>
+as a backing store with Hadoop. This page assumes that you have downloaded
+the Ceph software and installed necessary binaries as outlined in the Ceph
+documentation.
+
+<h3>Steps</h3>
+<ul>
+ <li>In the Hadoop conf directory edit core-site.xml,
+ adding the following (with appropriate substitutions). Note that
+ different nodes can connect to different monitors in the same cluster
+ without issue (the Ceph client will automatically redirect as necessary).
+<pre>
+<property>
+ <name>fs.default.name</name>
+ <value>ceph://null</value>
+</property>
+
+<property>
+ <name>fs.ceph.monAddr</name>
+ <value><serverIP:port></value>
+ <description>The location of the Ceph monitor to connect to.
+ This should be an IP address, not a domain-based web address.</description>
+</property>
+
+<property>
+ <name>fs.ceph.libDir</name>
+ <value>/usr/local/lib</value>
+ <description>The folder holding libceph and libhadoopceph</description>
+ </property>
+</pre>
+
+ <li>Start up your Ceph instance according to the Ceph documentation.</li>
+ <li>Do not use the bin/start-all.sh commands, as they will attempt to start
+ up an hdfs instance. Just start whatever systems you need and they will
+ automatically make use of the Ceph filesystem once configured as above.</li>
+</body>
+</html>
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