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| <div class="docbook"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix H. BDB HA initial configuration</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="Java-Broker-Appendix-Queue-Declare-Arguments.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="Java-Broker-Appendix-BDB-HA-initial-configuration-creation.html">Next</a></td></tr></table><hr /></div><div class="appendix"><div class="titlepage"><div><div><h1 class="title"><a id="Java-Broker-Appendix-BDB-HA-initial-configuration"></a>Appendix H. BDB HA initial configuration</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="Java-Broker-Appendix-BDB-HA-initial-configuration.html#Java-Broker-Appendix-BDB-HA-initial-configuration-example">H.1. Example of BDB HA 'Initial Configuration'</a></span></dt><dt><span class="section"><a href="Java-Broker-Appendix-BDB-HA-initial-configuration-creation.html">H.2. Creation of BDB HA group using an initial configuration.</a></span></dt></dl></div><p>The section <a class="xref" href="Java-Broker-Initial-Configuration.html#Java-Broker-Initial-Configuration-Introduction" title="5.1. Introduction">Section 5.1, “Introduction”</a> |
| provides an introduction into Broker-J initial configuration and how broker configuration can be created from |
| initial configuration on first broker start-up. This appendix illustrates how to create a BDB HA group from an |
| initial configuration file. For creation of BDB HA group using Web Management Console please refer <a class="xref" href="Java-Broker-Management-Channel-Web-Console.html" title="6.2. Web Management Console">Section 6.2, “Web Management Console”</a>. |
| </p><p>The BDB HA group usually consists of two or more nodes hosting a distributed virtual host.</p><p>When BDB HA node is created the following attributes has to be provided |
| </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><span class="emphasis"><em>groupName</em></span>; a name of BDB HA group</p></li><li class="listitem"><p><span class="emphasis"><em>nodeName</em></span>; a name of BDB HA node</p></li><li class="listitem"><p><span class="emphasis"><em>address</em></span>; a node address as colon-separated pair of host name and port</p></li><li class="listitem"><p><span class="emphasis"><em>helperAddress</em></span>; an address of existing helper node. It is required when node joins an existing group.</p></li><li class="listitem"><p><span class="emphasis"><em>helperNodeName</em></span>; a name of existing helper node. It is required when node joins an existing group.</p></li><li class="listitem"><p><span class="emphasis"><em>permittedNodes</em></span>; an array containing all addresses of nodes allowed to join the group.</p></li></ul></div><p> |
| </p><p> |
| A node priority can be optionally specified for the node to influence master election among nodes with the most current set of data. |
| An attribute <span class="emphasis"><em>priority</em></span> is used to specify a priority as an integer number. |
| </p><p>Apart from a group name and permitted nodes, the rest of node attribute values varies from node to node.</p><p>In order to use the same initial configuration for creation of BDB HA nodes, the context variable can be used for varying attribute values.</p><p>In the example of initial configuration illustrated in this apendix, the following context variables are defined. |
| </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><span class="emphasis"><em>${ha.group_name}</em></span>; used to pass an HA group name</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.node_name}</em></span>; used to pass a node name</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.node_address}</em></span>; used to pass a node address</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.helper_address}</em></span>; used to pass an address of helper node.</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.helper_node_name}</em></span>; used to pass an address of helper node.</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.permitted_nodes}</em></span>; used to pass a stringified json array containing permitted nodes for the group.</p></li><li class="listitem"><p><span class="emphasis"><em>${ha.priority}</em></span>; used to pass a node priority.</p></li></ul></div><p> |
| </p><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Java-Broker-Appendix-BDB-HA-initial-configuration-example"></a>H.1. Example of BDB HA 'Initial Configuration'</h2></div></div></div><p> An example of 'Initial Configuration' for BDB HA:</p><div class="example"><a id="d0e13557"></a><p class="title"><strong>Example H.1. BDB HA 'Initial configuration'</strong></p><div class="example-contents"><pre class="programlisting"> |
| { |
| "name": "${broker.name}", |
| "modelVersion" : "9.0", |
| "authenticationproviders" : [ { |
| "name" : "plain", |
| "type" : "Plain", |
| "users" : [ { |
| "name" : "guest", |
| "type" : "managed", |
| "password" : "guest" |
| } ] |
| } ], |
| "brokerloggers" : [ { |
| "name" : "logfile", |
| "type" : "File", |
| "fileName" : "${qpid.work_dir}${file.separator}log${file.separator}qpid.log", |
| "brokerloginclusionrules" : [ { |
| "name" : "Root", |
| "type" : "NameAndLevel", |
| "level" : "WARN", |
| "loggerName" : "ROOT" |
| }, { |
| "name" : "Qpid", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "org.apache.qpid.*" |
| }, { |
| "name" : "Operational", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "qpid.message.*" |
| }, { |
| "name" : "Statistics", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "qpid.statistics.*" |
| } ] |
| }, { |
| "name" : "memory", |
| "type" : "Memory", |
| "brokerloginclusionrules" : [ { |
| "name" : "Root", |
| "type" : "NameAndLevel", |
| "level" : "WARN", |
| "loggerName" : "ROOT" |
| }, { |
| "name" : "Qpid", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "org.apache.qpid.*" |
| }, { |
| "name" : "Operational", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "qpid.message.*" |
| }, { |
| "name" : "Statistics", |
| "type" : "NameAndLevel", |
| "level" : "INFO", |
| "loggerName" : "qpid.statistics.*" |
| } ] |
| } ], |
| "ports" : [ { |
| "name" : "AMQP", |
| "port" : "${qpid.amqp_port}", |
| "authenticationProvider" : "plain", |
| "virtualhostaliases" : [ { |
| "name" : "nameAlias", |
| "type" : "nameAlias" |
| }, { |
| "name" : "defaultAlias", |
| "type" : "defaultAlias" |
| }, { |
| "name" : "hostnameAlias", |
| "type" : "hostnameAlias" |
| } ] |
| }, { |
| "name" : "HTTP", |
| "port" : "${qpid.http_port}", |
| "authenticationProvider" : "plain", |
| "protocols" : [ "HTTP" ] |
| }], |
| "virtualhostnodes" : [ { |
| "name" : "${ha.node_name}", |
| "type" : "BDB_HA", |
| "address" : "${ha.node_address}", |
| "groupName" : "${ha.group_name}", |
| "helperAddress" : "${ha.helper_address}", |
| "helperNodeName" : "${ha.helper_node_name}", |
| "permittedNodes" : "${ha.permitted_nodes}", |
| "priority" : "${ha.priority}", |
| "defaultVirtualHostNode" : "true", |
| "virtualHostInitialConfiguration" : "${qpid.initial_config_virtualhost_config}" |
| } ], |
| "plugins" : [ { |
| "type" : "MANAGEMENT-HTTP", |
| "name" : "httpManagement" |
| } ] |
| } |
| </pre></div></div><br class="example-break" /></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="Java-Broker-Appendix-Queue-Declare-Arguments.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="Java-Broker-Appendix-BDB-HA-initial-configuration-creation.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix G. Queue Declaration Arguments supported by the Broker </td><td width="20%" align="center"><a accesskey="h" href="Apache-Qpid-Broker-J-Book.html">Home</a></td><td width="40%" align="right" valign="top"> H.2. Creation of BDB HA group using an initial configuration.</td></tr></table></div></div> |
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