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      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Author</dt>
      <dd style="margin-left: 8.5em">YUKI Hiroshi &lt;shimo****@clear*****&gt;</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Date</dt>
      <dd style="margin-left: 8.5em">2014-04-24 19:34:24 +0900 (Thu, 24 Apr 2014)</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">New Revision</dt>
      <dd style="margin-left: 8.5em"><a href="https://github.com/droonga/droonga.org/commit/840114b25baac859d690df703403a078e3214af5">840114b25baac859d690df703403a078e3214af5</a></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Message</dt>
      <dd style="margin-left: 8.5em"><pre style="border: 1px solid #aaa; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; padding: 0.5em; width: auto">Write stesp to set up a Droonga cluster</pre></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Modified files</dt>
      <dd style="margin-left: 8.5em">
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          <li><a href="https://github.com/droonga/droonga.org/commit/840114b25baac859d690df703403a078e3214af5#diff-0">tutorial/groonga/index.md</a></li>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">  Modified: tutorial/groonga/index.md (+68 -10)</span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -8,11 +8,11 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">layout: en</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## The goal of this tutorial</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-Learning steps to run a Droonga server by your hand, and use it as a [Groonga][groonga] compatible server.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Learning steps to run a Droonga cluster by your hand, and use it as a [Groonga][groonga] compatible server.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## Precondition</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-* You must have basic knowledge and experiences to setup and operate an [Ubuntu][] Server.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+* You must have basic knowledge and experiences to set up and operate an [Ubuntu][] Server.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> * You must have basic knowledge and experiences to use the [Groonga][groonga] via HTTP.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## Abstract</span>
<span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -28,19 +28,77 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">For example, let's try to build a database system to find [Starbucks stores in N</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## Prepare an environment for experiments</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Prepare a computer at first.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-This tutorial describes steps to setup a Droonga server on an existing computer.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+This tutorial describes steps to set up a Droonga cluster based on existing computers.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Following instructions are basically written for a successfully prepared virtual machine of the `Ubuntu 13.10 x64` on the service [DigitalOcean](https://www.digitalocean.com/), with an available console.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> NOTE: Make sure to use instances with &gt;= 2GB memory equipped, at least during installation of required packages for Droonga.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Otherwise, you may experience a strange build error.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-## How to install a Droonga server?</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+You need to prepare two or more computers for effective replication.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+## Set up a Droonga cluster</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Groonga provides binary packages and you can install Groonga easily, for some environments.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+(See: [how to install Groonga](http://groonga.org/docs/install.html))</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+However, currently there is no such an easy way to set up a database system based on Droonga.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+We are planning to provide a better way (like a chef cookbook), but for now, you have to set up it by your hand.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+A database system based on the Droonga is called *Droonga cluster*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+A Droonga cluster is constructed with multiple computers, called *Droonga node*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+So you have to set up multiple Droonga nodes for your Droonga cluster.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Assume that you have two computers: `192.168.0.10` and `192.168.0.11`.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 1. Install required platform packages, *on each computer*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # apt-get update</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # apt-get -y upgrade</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # apt-get install -y ruby ruby-dev build-essential nodejs npm</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 2. Install a gem package `droonga-engine`, *on each computer*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    It is the core component.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # gem install droonga-engine</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 3. Install an npm package `droonga-http-server`, *on each computer*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    It is the frontend component.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # npm install -g droonga-http-server</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 4. Prepare a configuration directory for a Droonga node, *on each computer*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    All physical databases are placed under this directory.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # mkdir ~/droonga</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # cd ~/droonga</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 5. Create a `catalog.json`, *on one of Droonga nodes*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    The file defines the structure of your Droonga cluster.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    You'll specify the list of your Droonga node's IP addresses as the `--nodes` option, like:</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # droonga-catalog-generate --dataset=Dataset \</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+                                   --nodes=192.168.0.10,192.168.0.11 \</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+                                   --output=./catalog.json</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    If you have only one computer and trying to set up it just for testing, then you'll do:</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # droonga-catalog-generate --dataset=Dataset \</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+                                   --nodes=127.0.0.1 \</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+                                   --output=./catalog.json</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ 6. Share the generated `catalog.json` *to your all Droonga nodes*.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        # scp ~/droonga/catalog.json 192.169.0.2:~/droonga/</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+All Droonga nodes for your Droonga cluster are prepared by steps described above.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+Let's continue to the next step.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+## Start and stop services</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+For Groonga, you simply have to install the Groonga and run it with the option `-d`, like:</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    # groonga -p 10080 -d --protocol http /tmp/databases/db</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-TBD</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-## How to start and stop the Droonga server?</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-TBD</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## Create a table</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -56,7 +114,7 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">TBD</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ## Conclusion</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">-In this tutorial, you did setup a [Droonga][] server on a [Ubuntu Linux][Ubuntu].</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+In this tutorial, you did set up a [Droonga][] cluster on [Ubuntu Linux][Ubuntu] computers.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> Moreover, you load data to it and and select data from it successfully, as a [Groonga][] compatible server.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre">   [Ubuntu]: http://www.ubuntu.com/</span>
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