| <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">2.2. Prerequisites</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Installation.html">Prev</a> </td><th align="center" width="60%">Chapter 2. Installation</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Installation-Download.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Java-Broker-Installation-Prerequistes"></a>2.2. Prerequisites</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Installation-Prerequistes-Java"></a>2.2.1. Java Platform</h3></div></div></div><p> The Apache Qpid Broker-J is an 100% Java implementation and as such it can be used on any | |
| operating system supporting Java 1.8 or higher<a class="footnote" href="#ftn.d0e97" id="d0e97"><sup class="footnote">[3]</sup></a>. This includes Linux, | |
| Solaris, Mac OS X, and Windows 7/8/10 etc.</p><p> The broker has been tested with Java implementations from both Oracle and IBM. Whatever | |
| platform you chose, it is recommended that you ensure it is patched with any critical | |
| updates made available from the vendor. </p><p> Verify that your JVM is installed properly by following <a class="link" href="Java-Broker-Miscellaneous.html#Java-Broker-Miscellaneous-JVM-Verification" title="F.1. JVM Installation verification">these instructions.</a> | |
| </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Installation-Prerequistes-Disk"></a>2.2.2. Disk</h3></div></div></div><p>The Broker installation requires approximately 20MB of free disk space.</p><p>The Broker also requires a working directory. The working directory is used for the | |
| message store, that is, the area of the file-system used to record messages | |
| whilst they are passing through the Broker. The working directory is also used for the | |
| default location of the log file. The size of the working directory will depend on the how | |
| the Broker is used.</p><p>The performance of the file system hosting the work directory is key to the performance | |
| of Broker as a whole. For best performance, choose a device that has low latency and one | |
| that is uncontended by other applications.</p><p>Be aware that there are additional considerations if you are considering hosting the | |
| working directory on NFS.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Installation-Prerequistes-Memory"></a>2.2.3. Memory</h3></div></div></div><p>Qpid caches messages in memory for performance reasons, so in general, the Broker will | |
| benefit from as much memory as possible. However, on a 32bit JVM, the maximum addressable | |
| memory range for a process is 4GB, after leaving space for the JVM's own use this will give | |
| a maximum usable size of approximately ~3.7GB.</p><p>See <a class="xref" href="Java-Broker-Runtime-Memory.html" title="9.11. Memory">Section 9.11, “Memory”</a> for a full description of how memory is | |
| used.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Installation-Prerequistes-OperatingSystemAccount"></a>2.2.4. Operating System Account</h3></div></div></div><p>Installation or operation of Qpid does <span class="emphasis"><em>not</em></span> require a privileged | |
| account (i.e. root on UNIX platforms or Administrator on Windows). However it is suggested | |
| that you use an dedicated account (e.g. qpid) for the installation and operation of the Broker.</p></div><div class="footnotes"><br /><hr style="width:100; text-align:left;margin-left: 0" /><div class="footnote" id="ftn.d0e97"><p><a class="para" href="#d0e97"><sup class="para">[3] </sup></a>Java Cryptography Extension (JCE) | |
| Unlimited Strength extension must be installed or enabled for some features.</p></div></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Installation.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Installation.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Installation-Download.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">Chapter 2. Installation </td><td align="center" width="20%"><a accesskey="h" href="Apache-Qpid-Broker-J-Book.html">Home</a></td><td align="right" valign="top" width="40%"> 2.3. Download</td></tr></table></div></div> |