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Alan Orth
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<article class="blog-post">
<header>
<h2 class="blog-post-title"><a href="https://alanorth.github.io/cgspace-notes/2018-05/">May, 2018</a></h2>
<p class="blog-post-meta"><time datetime="2018-05-01T16:43:54&#43;03:00">Tue May 01, 2018</time> by Alan Orth in
<i class="fa fa-tag" aria-hidden="true"></i>&nbsp;<a href="/cgspace-notes/tags/notes" rel="tag">Notes</a>
</p>
</header>
<h2 id="2018-05-01">2018-05-01</h2>
<ul>
<li>I cleared the Solr statistics core on DSpace Test by issuing two commands directly to the Solr admin interface:
<ul>
<li><a href="http://localhost:3000/solr/statistics/update?stream.body=%3Cdelete%3E%3Cquery%3E*:*%3C/query%3E%3C/delete%3E">http://localhost:3000/solr/statistics/update?stream.body=%3Cdelete%3E%3Cquery%3E*:*%3C/query%3E%3C/delete%3E</a></li>
<li><a href="http://localhost:3000/solr/statistics/update?stream.body=%3Ccommit/%3E">http://localhost:3000/solr/statistics/update?stream.body=%3Ccommit/%3E</a></li>
</ul></li>
<li>Then I reduced the JVM heap size from 6144 back to 5120m</li>
<li>Also, I switched it to use OpenJDK instead of Oracle Java, as well as re-worked the <a href="https://github.com/ilri/rmg-ansible-public">Ansible infrastructure scripts</a> to support hosts choosing which distribution they want to use</li>
</ul>
<p></p>
<a href='https://alanorth.github.io/cgspace-notes/2018-05/'>Read more →</a>
</article>
<article class="blog-post">
<header>
<h2 class="blog-post-title"><a href="https://alanorth.github.io/cgspace-notes/2018-04/">April, 2018</a></h2>
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<article class="blog-post">
<header>
<h2 class="blog-post-title"><a href="https://alanorth.github.io/cgspace-notes/2017-08/">August, 2017</a></h2>
<p class="blog-post-meta"><time datetime="2017-08-01T11:51:52&#43;03:00">Tue Aug 01, 2017</time> by Alan Orth in
<i class="fa fa-tag" aria-hidden="true"></i>&nbsp;<a href="/cgspace-notes/tags/notes" rel="tag">Notes</a>
</p>
</header>
<h2 id="2017-08-01">2017-08-01</h2>
<ul>
<li>Linode sent an alert that CGSpace (linode18) was using 350% CPU for the past two hours</li>
<li>I looked in the Activity pane of the Admin Control Panel and it seems that Google, Baidu, Yahoo, and Bing are all crawling with massive numbers of bots concurrently (~100 total, mostly Baidu and Google)</li>
<li>The good thing is that, according to <code>dspace.log.2017-08-01</code>, they are all using the same Tomcat session</li>
<li>This means our Tomcat Crawler Session Valve is working</li>
<li>But many of the bots are browsing dynamic URLs like:
<ul>
<li>/handle/10568/3353/discover</li>
<li>/handle/10568/16510/browse</li>
</ul></li>
<li>The <code>robots.txt</code> only blocks the top-level <code>/discover</code> and <code>/browse</code> URLs&hellip; we will need to find a way to forbid them from accessing these!</li>
<li>Relevant issue from DSpace Jira (semi resolved in DSpace 6.0): <a href="https://jira.duraspace.org/browse/DS-2962">https://jira.duraspace.org/browse/DS-2962</a></li>
<li>It turns out that we&rsquo;re already adding the <code>X-Robots-Tag &quot;none&quot;</code> HTTP header, but this only forbids the search engine from <em>indexing</em> the page, not crawling it!</li>
<li>Also, the bot has to successfully browse the page first so it can receive the HTTP header&hellip;</li>
<li>We might actually have to <em>block</em> these requests with HTTP 403 depending on the user agent</li>
<li>Abenet pointed out that the CGIAR Library Historical Archive collection I sent July 20th only had ~100 entries, instead of 2415</li>
<li>This was due to newline characters in the <code>dc.description.abstract</code> column, which caused OpenRefine to choke when exporting the CSV</li>
<li>I exported a new CSV from the collection on DSpace Test and then manually removed the characters in vim using <code>g/^$/d</code></li>
<li>Then I cleaned up the author authorities and HTML characters in OpenRefine and sent the file back to Abenet</li>
</ul>
<p></p>
<a href='https://alanorth.github.io/cgspace-notes/2017-08/'>Read more →</a>
</article>
<nav class="blog-pagination">
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<ol class="list-unstyled">
<li><a href="/cgspace-notes/2018-05/">May, 2018</a></li>
<li><a href="/cgspace-notes/2018-04/">April, 2018</a></li>
<li><a href="/cgspace-notes/2018-03/">March, 2018</a></li>
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<li><a href="/cgspace-notes/2018-01/">January, 2018</a></li>
<li><a href="/cgspace-notes/2017-12/">December, 2017</a></li>
</ol>
</section>