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152 lines
8.5 KiB
152 lines
8.5 KiB
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>YaCy '#[clientname]#': Index Sources & Targets</title>
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#%env/templates/metas.template%#
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</head>
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<body id="IndexFederated_p">
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#%env/templates/header.template%#
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#%env/templates/submenuIndexControl.template%#
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<h2>Index Sources & Targets</h2>
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<p>
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YaCy supports multiple index storage locations.
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As an internal indexing database a deep-embedded multi-core Solr is used and it is possible to attach also a remote Solr.
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</p>
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<form id="config" action="IndexFederated_p.html" method="post" enctype="multipart/form-data" accept-charset="UTF-8">
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<fieldset>
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<legend>
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<label for="p2p">Solr Search Index</label>
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</legend>
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Solr stores the main search index. It is the home of two cores, the default 'collection1' core for documents and the 'webgraph' core for a web structure graph. Detailed information about the used Solr fields can be edited in the <a href="/IndexSchema_p.html">Schema Editor</a>.
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<dl>
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<dt class="TableCellDark"><input type="checkbox" name="solr.indexing.lazy" id="solr.indexing.lazy" #(solr.indexing.lazy.checked)#:: checked="checked"#(/solr.indexing.lazy.checked)# /></dt>
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<dd>Lazy Value Initialization. If checked, only non-zero values and non-empty strings are written to Solr fields.</dd>
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<dt> </dt><dd> </dd>
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<dt>Use deep-embedded local Solr</dt>
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<dd><input type="checkbox" name="core.service.fulltext" id="core_service_fulltext" #(core.service.fulltext.checked)#:: checked="checked"#(/core.service.fulltext.checked)# onclick="if(!document.getElementById('config').core_service_fulltext.checked) {document.getElementById('config').solr_indexing_solrremote.checked = true;}"/><br/>
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This will write the YaCy-embedded Solr index which stored within the YaCy DATA directory.<br/>
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The Solr native search interface is accessible at<br/>
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<a href="/solr/select?q=*:*&start=0&rows=3&core=collection1">/solr/select?q=*:*&start=0&rows=3&core=collection1</a>
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for the default search index (core: collection1) and at<br/>
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<a href="/solr/select?q=*:*&start=0&rows=3&core=webgraph">/solr/select?q=*:*&start=0&rows=3&core=webgraph</a> for the webgraph core.<br/>
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If you switch off this index, a remote Solr must be activated.</dd>
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<dt><input type="submit" name="set" value="Set" /></dt><dd></dd>
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<dt>Use remote Solr server(s)</dt>
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<dd><input type="checkbox" name="solr.indexing.solrremote" id="solr_indexing_solrremote" #(solr.indexing.solrremote.checked)#:: checked="checked"#(/solr.indexing.solrremote.checked)# onclick="if(!document.getElementById('config').solr_indexing_solrremote.checked) {document.getElementById('config').core_service_fulltext.checked = true;}"/><br/>
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Here you can define a single or a set of remote solr servers. If both, an internal and an external Solr is used, then both are mirrored.
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That means, every write request goes to internal and external Solr, but a read request goes only to the internal index.
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Only if the internal index does not give any result on a search request, also the remote is requested.</dd>
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#(table)#::
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<dt class="TableCellDark"> </dt>
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<dd>Solr Hosts<br/>
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<div>
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<table class="sortable" border="0" cellpadding="2" cellspacing="1">
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<tr class="TableHeader" valign="bottom">
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<td><strong>Solr Host Administration Interface</strong><br/></td>
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<td><strong>Index Size</strong></td>
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</tr>
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#{list}#
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<tr class="TableCell#(dark)#Light::Dark::Summary#(/dark)#">
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<td><a href="#[url]#" target="_blank">#[url]#</a></td>
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<td align="right">#[size]#</td>
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</tr>
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#{/list}#
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</table>
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</div>
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</dd>
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#(/table)#
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<dt class="TableCellDark"></dt>
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<dd>Solr URL(s)<br/><textarea rows="2" cols="80" name="solr.indexing.url" id="solr.indexing.url"/>#[solr.indexing.url]#</textarea><br/>
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You can set one or more Solr targets here which are accessed as a shard. For several targets, list them using a ',' (comma) as separator.
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The set of remote targets are used as shard of a complete index. The host part of the url is used as key for a hash function which selects one of the shards (one of your remote servers).
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When a search request is made, all servers are accessed synchronously and the result is combined.</dd>
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<dt class="TableCellDark"></dt>
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<dd>Sharding Method<br/><input type="text" size="50" maxlength="50" value="#[solr.indexing.sharding]#" name="solr.indexing.sharding" id="solr.indexing.sharding" disabled="disabled"/></dd>
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<dt><input type="submit" name="set" value="Set" /></dt><dd></dd>
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<dt></dt><dd>
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An <strong>external Solr installation</strong> is easily done following these steps (by example for Solr 4.1.0):
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<ul>
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<li>Download solr-4.1.0.tgz from http://lucene.apache.org/solr/</li>
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<li>Decompress solr-4.1.0.tgz (with 'tar xfz solr-4.1.0.tgz') and put solr-4.1.0 into ~/</li>
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<li>Consider that YaCy is already running and stored in ~/yacy/</li>
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<li>To configure the multi-core configuration of YaCy, execute:<br>
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<pre>mkdir ~/solr-4.1.0/example/solr/webgraph
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cp -R ~/solr-4.1.0/example/solr/collection1/conf ~/solr-4.1.0/example/solr/webgraph/conf
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~/yacy/bin/apicat.sh /api/schema.xml?core=collection1 > ~/solr-4.1.0/example/solr/collection1/conf/schema.xml
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~/yacy/bin/apicat.sh /api/schema.xml?core=webgraph > ~/solr-4.1.0/example/solr/webgraph/conf/schema.xml</pre></li>
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<li>edit ~/solr-4.1.0/example/solr/solr.xml and put in the following content:<br/>
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<pre><?xml version="1.0" encoding="UTF-8" ?>
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<solr persistent="true">
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<cores adminPath="/admin/cores" defaultCoreName="collection1">
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<core name="collection1" instanceDir="collection1" />
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<core name="webgraph" instanceDir="webgraph" />
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</cores>
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</solr></pre></li>
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<li>Finally, start the external Solr with:<br>
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<pre>cd ~/solr-4.1.0/example/ && java -jar start.jar</pre></li>
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<li>open <a href="http://localhost:8983/solr/">http://localhost:8983/solr/</a> to visit Solr's administration console.</li>
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</ul>
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</dd>
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</dl>
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</fieldset>
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<fieldset>
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<legend>
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Web Structure Index
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</legend>
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The web structure index is used for host browsing (to discover the internal file/folder structure), ranking (counting the number of references) and file search (there are about fourty times more links from loaded pages as in documents of the main search index).
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<dl>
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<dt><input type="checkbox" name="core.service.citation.tmp" id="core_service_citation" #(core.service.citation.tmp.checked)#:: checked="checked"#(/core.service.citation.tmp.checked)# /></dt>
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<dd>use citation reference index (lightweight and fast)</dd>
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<dt><input type="checkbox" name="core.service.webgraph.tmp" id="core_service_webgraph" #(core.service.webgraph.tmp.checked)#:: checked="checked"#(/core.service.webgraph.tmp.checked)# /></dt>
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<dd>use webgraph search index (rich information in second Solr core)</dd>
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<dt><input type="submit" name="set" value="Set" /></dt><dd></dd>
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</dl>
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</fieldset>
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<!--
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<fieldset>
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<legend>
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Content Semantics
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</legend>
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YaCy uses a Apache Jena instance to host metadata about web pages.
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<dl>
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<dt><input type="checkbox" name="core.service.jena.tmp" id="core_service_jena" #(core.service.jena.tmp.checked)#:: checked="checked"#(/core.service.jena.tmp.checked)# /></dt>
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<dd>write document metadata to the Jena index.</dd>
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<dt><input type="submit" name="set" value="Set" /></dt><dd></dd>
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</dl>
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</fieldset>
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-->
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<fieldset>
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<legend>
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Peer-to-Peer Operation
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</legend>
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The 'RWI' (Reverse Word Index) is necessary for index transmission in distributed mode. For portal or intranet mode this must be switched off.
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<dl>
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<dt><input type="checkbox" name="core.service.rwi.tmp" id="core_service_rwi" #(core.service.rwi.tmp.checked)#:: checked="checked"#(/core.service.rwi.tmp.checked)# /></dt>
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<dd>support peer-to-peer index transmission (DHT RWI index)</dd>
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<dt><input type="submit" name="set" value="Set" /></dt><dd></dd>
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</dl>
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</fieldset>
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</form>
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#%env/templates/footer.template%#
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</body>
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</html>
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