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Linode alerted that CGSpace (linode18) had a higher outbound traffic rate than normal early this morning
I don’t see anything interesting in the web server logs around that time though:
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
92 40.77.167.4
99 210.7.29.100
120 38.126.157.45
177 35.237.175.180
177 40.77.167.32
216 66.249.75.219
225 18.203.76.93
261 46.101.86.248
357 207.46.13.1
903 54.70.40.11
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Linode alerted that CGSpace (linode18) had a higher outbound traffic rate than normal early this morning
I don’t see anything interesting in the web server logs around that time though:
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
92 40.77.167.4
99 210.7.29.100
120 38.126.157.45
177 35.237.175.180
177 40.77.167.32
216 66.249.75.219
225 18.203.76.93
261 46.101.86.248
357 207.46.13.1
903 54.70.40.11
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<h2 class="blog-post-title"><a href="https://alanorth.github.io/cgspace-notes/2019-01/">January, 2019</a></h2>
<p class="blog-post-meta"><time datetime="2019-01-02T09:48:30+02:00">Wed Jan 02, 2019</time> by Alan Orth in
<i class="fa fa-tag" aria-hidden="true"></i> <a href="/cgspace-notes/tags/notes" rel="tag">Notes</a>
</p>
</header>
<h2 id="2019-01-02">2019-01-02</h2>
<ul>
<li>Linode alerted that CGSpace (linode18) had a higher outbound traffic rate than normal early this morning</li>
<li>I don’t see anything interesting in the web server logs around that time though:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
92 40.77.167.4
99 210.7.29.100
120 38.126.157.45
177 35.237.175.180
177 40.77.167.32
216 66.249.75.219
225 18.203.76.93
261 46.101.86.248
357 207.46.13.1
903 54.70.40.11
</code></pre>
<ul>
<li>Analyzing the types of requests made by the top few IPs during that time:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | grep 54.70.40.11 | grep -o -E "(bitstream|discover|handle)" | sort | uniq -c
30 bitstream
534 discover
352 handle
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | grep 207.46.13.1 | grep -o -E "(bitstream|discover|handle)" | sort | uniq -c
194 bitstream
345 handle
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | grep 46.101.86.248 | grep -o -E "(bitstream|discover|handle)" | sort | uniq -c
261 handle
</code></pre>
<ul>
<li>It’s not clear to me what was causing the outbound traffic spike</li>
<li>Oh nice! The once-per-year cron job for rotating the Solr statistics actually worked now (for the first time ever!):</li>
</ul>
<pre><code>Moving: 81742 into core statistics-2010
Moving: 1837285 into core statistics-2011
Moving: 3764612 into core statistics-2012
Moving: 4557946 into core statistics-2013
Moving: 5483684 into core statistics-2014
Moving: 2941736 into core statistics-2015
Moving: 5926070 into core statistics-2016
Moving: 10562554 into core statistics-2017
Moving: 18497180 into core statistics-2018
</code></pre>
<ul>
<li>This could by why the outbound traffic rate was high, due to the S3 backup that run at 3:30AM…</li>
<li>Run all system updates on DSpace Test (linode19) and reboot the server</li>
</ul>
<h2 id="2019-01-03">2019-01-03</h2>
<ul>
<li>Update local Docker image for DSpace PostgreSQL, re-using the existing data volume:</li>
</ul>
<pre><code>$ sudo docker pull postgres:9.6-alpine
$ sudo docker rm dspacedb
$ sudo docker run --name dspacedb -v /home/aorth/.local/lib/containers/volumes/dspacedb_data:/var/lib/postgresql/data -e POSTGRES_PASSWORD=postgres -p 5432:5432 -d postgres:9.6-alpine
</code></pre>
<ul>
<li>Testing DSpace 5.9 with Tomcat 8.5.37 on my local machine and I see that Atmire’s Listings and Reports still doesn’t work
<ul>
<li>After logging in via XMLUI and clicking the Listings and Reports link from the sidebar it redirects me to a JSPUI login page</li>
<li>If I log in again there the Listings and Reports work… hmm.</li>
</ul></li>
<li>The JSPUI application—which Listings and Reports depends upon—also does not load, though the error is perhaps unrelated:</li>
</ul>
<pre><code>2019-01-03 14:45:21,727 INFO org.dspace.browse.BrowseEngine @ anonymous:session_id=9471D72242DAA05BCC87734FE3C66EA6:ip_addr=127.0.0.1:browse_mini:
2019-01-03 14:45:21,971 INFO org.dspace.app.webui.discovery.DiscoverUtility @ facets for scope, null: 23
2019-01-03 14:45:22,115 WARN org.dspace.app.webui.servlet.InternalErrorServlet @ :session_id=9471D72242DAA05BCC87734FE3C66EA6:internal_error:-- URL Was: http://localhost:8080/jspui/internal-error
-- Method: GET
-- Parameters were:
org.apache.jasper.JasperException: /home.jsp (line: [214], column: [1]) /discovery/static-tagcloud-facet.jsp (line: [57], column: [8]) No tag [tagcloud] defined in tag library imported with prefix [dspace]
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:291)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:97)
at org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:347)
at org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:380)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:481)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1445)
at org.apache.jasper.compiler.Parser.parseBody(Parser.java:1683)
at org.apache.jasper.compiler.Parser.parseOptionalBody(Parser.java:1016)
at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1291)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1470)
at org.apache.jasper.compiler.Parser.parse(Parser.java:144)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:105)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:202)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:373)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:350)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:470)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:395)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:316)
at org.dspace.app.webui.util.JSPManager.showJSP(JSPManager.java:60)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:191)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.CrawlerSessionManagerValve.invoke(CrawlerSessionManagerValve.java:234)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
</code></pre>
<ul>
<li>I notice that I get different JSESSIONID cookies for <code>/</code> (XMLUI) and <code>/jspui</code> (JSPUI) on Tomcat 8.5.37, I wonder if it’s the same on Tomcat 7.0.92… yes I do.</li>
<li>Hmm, on Tomcat 7.0.92 I see that I get a <code>dspace.current.user.id</code> session cookie after logging into XMLUI, and then when I browse to JSPUI I am still logged in…
<ul>
<li>I didn’t see that cookie being set on Tomcat 8.5.37</li>
</ul></li>
<li>I sent a message to the dspace-tech mailing list to ask</li>
</ul>
<h2 id="2019-01-04">2019-01-04</h2>
<ul>
<li>Linode sent a message last night that CGSpace (linode18) had high CPU usage, but I don’t see anything around that time in the web server logs:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "03/Jan/2019:1(7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
189 207.46.13.192
217 31.6.77.23
340 66.249.70.29
349 40.77.167.86
417 34.218.226.147
630 207.46.13.173
710 35.237.175.180
790 40.77.167.87
1776 66.249.70.27
2099 54.70.40.11
</code></pre>
<ul>
<li>I’m thinking about trying to validate our <code>dc.subject</code> terms against <a href="http://aims.fao.org/agrovoc/webservices">AGROVOC webservices</a></li>
<li>There seem to be a few APIs and the documentation is kinda confusing, but I found this REST endpoint that does work well, for example searching for <code>SOIL</code>:</li>
</ul>
<pre><code>$ http http://agrovoc.uniroma2.it/agrovoc/rest/v1/search?query=SOIL&lang=en
HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Connection: Keep-Alive
Content-Length: 493
Content-Type: application/json; charset=utf-8
Date: Fri, 04 Jan 2019 13:44:27 GMT
Keep-Alive: timeout=5, max=100
Server: Apache
Strict-Transport-Security: max-age=63072000; includeSubdomains
Vary: Accept
X-Content-Type-Options: nosniff
X-Frame-Options: ALLOW-FROM http://aims.fao.org
{
"@context": {
"@language": "en",
"altLabel": "skos:altLabel",
"hiddenLabel": "skos:hiddenLabel",
"isothes": "http://purl.org/iso25964/skos-thes#",
"onki": "http://schema.onki.fi/onki#",
"prefLabel": "skos:prefLabel",
"results": {
"@container": "@list",
"@id": "onki:results"
},
"skos": "http://www.w3.org/2004/02/skos/core#",
"type": "@type",
"uri": "@id"
},
"results": [
{
"lang": "en",
"prefLabel": "soil",
"type": [
"skos:Concept"
],
"uri": "http://aims.fao.org/aos/agrovoc/c_7156",
"vocab": "agrovoc"
}
],
"uri": ""
}
</code></pre>
<ul>
<li>The API does not appear to be case sensitive (searches for <code>SOIL</code> and <code>soil</code> return the same thing)</li>
<li>I’m a bit confused that there’s no obvious return code or status when a term is not found, for example <code>SOILS</code>:</li>
</ul>
<pre><code>HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Connection: Keep-Alive
Content-Length: 367
Content-Type: application/json; charset=utf-8
Date: Fri, 04 Jan 2019 13:48:31 GMT
Keep-Alive: timeout=5, max=100
Server: Apache
Strict-Transport-Security: max-age=63072000; includeSubdomains
Vary: Accept
X-Content-Type-Options: nosniff
X-Frame-Options: ALLOW-FROM http://aims.fao.org
{
"@context": {
"@language": "en",
"altLabel": "skos:altLabel",
"hiddenLabel": "skos:hiddenLabel",
"isothes": "http://purl.org/iso25964/skos-thes#",
"onki": "http://schema.onki.fi/onki#",
"prefLabel": "skos:prefLabel",
"results": {
"@container": "@list",
"@id": "onki:results"
},
"skos": "http://www.w3.org/2004/02/skos/core#",
"type": "@type",
"uri": "@id"
},
"results": [],
"uri": ""
}
</code></pre>
<ul>
<li>I guess the <code>results</code> object will just be empty…</li>
<li>Another way would be to try with SPARQL, perhaps using the Python 2.7 <a href="https://pypi.org/project/sparql-client/">sparql-client</a>:</li>
</ul>
<pre><code>$ python2.7 -m virtualenv /tmp/sparql
$ . /tmp/sparql/bin/activate
$ pip install sparql-client ipython
$ ipython
In [10]: import sparql
In [11]: s = sparql.Service("http://agrovoc.uniroma2.it:3030/agrovoc/sparql", "utf-8", "GET")
In [12]: statement=('PREFIX skos: <http://www.w3.org/2004/02/skos/core#> '
...: 'SELECT '
...: '?label '
...: 'WHERE { '
...: '{ ?concept skos:altLabel ?label . } UNION { ?concept skos:prefLabel ?label . } '
...: 'FILTER regex(str(?label), "^fish", "i") . '
...: '} LIMIT 10')
In [13]: result = s.query(statement)
In [14]: for row in result.fetchone():
...: print(row)
...:
(<Literal "fish catching"@en>,)
(<Literal "fish harvesting"@en>,)
(<Literal "fish meat"@en>,)
(<Literal "fish roe"@en>,)
(<Literal "fish conversion"@en>,)
(<Literal "fisheries catches (composition)"@en>,)
(<Literal "fishtail palm"@en>,)
(<Literal "fishflies"@en>,)
(<Literal "fishery biology"@en>,)
(<Literal "fish production"@en>,)
</code></pre>
<ul>
<li>The SPARQL query comes from my notes in <a href="/cgspace-notes/2017-08/">2017-08</a></li>
</ul>
<h2 id="2019-01-06">2019-01-06</h2>
<ul>
<li>I built a clean DSpace 5.8 installation from the upstream <code>dspace-5.8</code> tag and the issue with the XMLUI/JSPUI login is still there with Tomcat 8.5.37
<ul>
<li>If I log into XMLUI and then nagivate to JSPUI I need to log in again</li>
<li>XMLUI does not set the <code>dspace.current.user.id</code> session cookie in Tomcat 8.5.37 for some reason</li>
<li>I sent an update to the dspace-tech mailing list to ask for more help troubleshooting</li>
</ul></li>
</ul>
<h2 id="2019-01-07">2019-01-07</h2>
<ul>
<li>I built a clean DSpace 6.3 installation from the upstream <code>dspace-6.3</code> tag and the issue with the XMLUI/JSPUI login is still there with Tomcat 8.5.37
<ul>
<li>If I log into XMLUI and then nagivate to JSPUI I need to log in again</li>
<li>XMLUI does not set the <code>dspace.current.user.id</code> session cookie in Tomcat 8.5.37 for some reason</li>
<li>I sent an update to the dspace-tech mailing list to ask for more help troubleshooting</li>
</ul></li>
</ul>
<h2 id="2019-01-08">2019-01-08</h2>
<ul>
<li>Tim Donohue responded to my thread about the cookies on the dspace-tech mailing list
<ul>
<li>He suspects it’s a change of behavior in Tomcat 8.5, and indeed I see a mention of new cookie processing in the <a href="https://tomcat.apache.org/migration-85.html#Cookies">Tomcat 8.5 migration guide</a></li>
<li>I tried to switch my XMLUI and JSPUI contexts to use the <code>LegacyCookieProcessor</code>, but it didn’t seem to help</li>
<li>I <a href="https://jira.duraspace.org/browse/DS-4140">filed DS-4140 on the DSpace issue tracker</a></li>
</ul></li>
</ul>
<h2 id="2019-01-11">2019-01-11</h2>
<ul>
<li>Tezira wrote to say she has stopped receiving the <code>DSpace Submission Approved and Archived</code> emails from CGSpace as of January 2nd
<ul>
<li>I told her that I haven’t done anything to disable it lately, but that I would check</li>
<li>Bizu also says she hasn’t received them lately</li>
</ul></li>
</ul>
<h2 id="2019-01-14">2019-01-14</h2>
<ul>
<li>Day one of CGSpace AReS meeting in Amman</li>
</ul>
<h2 id="2019-01-15">2019-01-15</h2>
<ul>
<li>Day two of CGSpace AReS meeting in Amman
<ul>
<li>Discuss possibly extending the <a href="https://github.com/ilri/dspace-statistics-api">dspace-statistics-api</a> to make community and collection statistics available</li>
<li>Discuss new “final” CG Core document and some changes that we’ll need to do on CGSpace and other repositories</li>
<li>We agreed to try to stick to pure Dublin Core where possible, then use fields that exist in standard DSpace, and use “cg” namespace for everything else</li>
<li>Major changes are to move <code>dc.contributor.author</code> to <code>dc.creator</code> (which MELSpace and WorldFish are already using in their DSpace repositories)</li>
</ul></li>
<li>I am testing the speed of the WorldFish DSpace repository’s REST API and it’s five to ten times faster than CGSpace as I tested in <a href="/cgspace-notes/2018-10/">2018-10</a>:</li>
</ul>
<pre><code>$ time http --print h 'https://digitalarchive.worldfishcenter.org/rest/items?expand=metadata,bitstreams,parentCommunityList&limit=100&offset=0'
0.16s user 0.03s system 3% cpu 5.185 total
0.17s user 0.02s system 2% cpu 7.123 total
0.18s user 0.02s system 6% cpu 3.047 total
</code></pre>
<ul>
<li>In other news, Linode sent a mail last night that the CPU load on CGSpace (linode18) was high, here are the top IPs in the logs around those few hours:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "14/Jan/2019:(17|18|19|20)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
157 31.6.77.23
192 54.70.40.11
202 66.249.64.157
207 40.77.167.204
220 157.55.39.140
326 197.156.105.116
385 207.46.13.158
1211 35.237.175.180
1830 66.249.64.155
2482 45.5.186.2
</code></pre>
<h2 id="2019-01-16">2019-01-16</h2>
<ul>
<li>Day three of CGSpace AReS meeting in Amman
<ul>
<li>We discussed CG Core 2.0 metadata and decided some action points</li>
<li>We discussed branding of AReS tool</li>
</ul></li>
<li>Notes from our CG Core 2.0 metadata discussion:
<ul>
<li>Not Dublin Core:</li>
<li>dc.subtype</li>
<li>dc.peer-reviewed</li>
<li>Dublin Core, possible action for CGSpace:</li>
<li>dc.description:
<ul>
<li>We use dc.description.abstract, dc.description (Notes), dc.description.version (Peer review status), dc.description.sponsorship (Funder)</li>
<li>Maybe move abstract to dc.description</li>
<li>Maybe notes moves to cg.description.notes???</li>
<li>Maybe move dc.description.version to cg.peer-reviewed or cg.peer-review-status???</li>
<li>Move dc.description.sponsorship to cg.contributor.donor???</li>
</ul></li>
<li>dc.subject:
<ul>
<li>Wait for guidance, evaluate technical implications (Google indexing, OAI, etc)</li>
</ul></li>
<li>Move dc.contributor.author to dc.creator</li>
<li>dc.contributor Project
<ul>
<li>Recommend against creating new fields for all projects</li>
<li>We use collections projects/themes/etc</li>
</ul></li>
<li>dc.contributor Project Lead Center
<ul>
<li>MELSpace uses cg.contributor.project-lead-institute (institute is more generic than center)</li>
<li>Maybe we use?</li>
</ul></li>
<li>dc.contributor Partner
<ul>
<li>Wait for guidance</li>
<li>MELSpace uses cg.contibutor.center (?)</li>
</ul></li>
<li>dc.contributor Donor
<ul>
<li>Use cg.contributor.donor</li>
</ul></li>
<li>dc.date
<ul>
<li>Wait for guidance, maybe move dc.date.issued?</li>
<li>dc.date.accessioned and dc.date.available are automatic in DSpace</li>
</ul></li>
<li>dc.language
<ul>
<li>Move dc.language.iso to dc.language</li>
</ul></li>
<li>dc.identifier
<ul>
<li>Move cg.identifier.url to dc.identifier</li>
</ul></li>
<li>dc.identifier bibliographicCitation
<ul>
<li>dc.identifier.citation should move to dc.bibliographicCitation</li>
</ul></li>
<li>dc.description.notes
<ul>
<li>Wait for guidance, maybe move to cg.description.notes ???</li>
</ul></li>
<li>dc.relation
<ul>
<li>Maybe move cg.link.reference</li>
<li>Perhaps consolodate cg.link.audio etc there…?</li>
</ul></li>
<li>dc.relation.isPartOf
<ul>
<li>Move dc.relation.ispartofseries to dc.relation.isPartOf</li>
</ul></li>
<li>dc.audience
<ul>
<li>Move cg.targetaudience to dc.audience</li>
</ul></li>
</ul></li>
<li>Something happened to the Solr usage statistics on CGSpace
<ul>
<li>I looked on the server and the Solr cores are there (56GB!), and I don’t see any obvious errors in dmesg or anything</li>
<li>I see that the server hasn’t been rebooted in 26 days so I rebooted it</li>
</ul></li>
<li>After reboot the Solr stats are still messed up in the Atmire Usage Stats module, it only shows 2019-01!</li>
</ul>
<p><img src="/cgspace-notes/2019/01/solr-stats-incorrect.png" alt="Solr stats fucked up" /></p>
<ul>
<li>In the Solr admin UI I see the following error:</li>
</ul>
<pre><code>statistics-2018: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher
</code></pre>
<ul>
<li>Looking in the Solr log I see this:</li>
</ul>
<pre><code>2019-01-16 13:37:55,395 ERROR org.apache.solr.core.CoreContainer @ Error creating core [statistics-2018]: Error opening new searcher
org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:873)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:646)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:491)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:466)
at org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:575)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:199)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:188)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
at org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:729)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:258)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.dspace.solr.filters.LocalHostRestrictionFilter.doFilter(LocalHostRestrictionFilter.java:50)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.CrawlerSessionManagerValve.invoke(CrawlerSessionManagerValve.java:180)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1565)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1677)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:845)
... 31 more
Caused by: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/home/cgspace.cgiar.org/solr/statistics-2018/data/index/write.lock
at org.apache.lucene.store.Lock.obtain(Lock.java:89)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:753)
at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:77)
at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:64)
at org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:279)
at org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:111)
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1528)
... 33 more
2019-01-16 13:37:55,401 ERROR org.apache.solr.core.SolrCore @ org.apache.solr.common.SolrException: Error CREATEing SolrCore 'statistics-2018': Unable to create core [statistics-2018] Caused by: Lock obtain timed out: NativeFSLock@/home/cgspace.cgiar.org/solr/statistics-2018/data/index/write.lock
at org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:613)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:199)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:188)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
at org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:729)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:258)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.dspace.solr.filters.LocalHostRestrictionFilter.doFilter(LocalHostRestrictionFilter.java:50)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.CrawlerSessionManagerValve.invoke(CrawlerSessionManagerValve.java:180)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.solr.common.SolrException: Unable to create core [statistics-2018]
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:507)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:466)
at org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:575)
... 27 more
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:873)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:646)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:491)
... 29 more
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1565)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1677)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:845)
... 31 more
Caused by: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/home/cgspace.cgiar.org/solr/statistics-2018/data/index/write.lock
at org.apache.lucene.store.Lock.obtain(Lock.java:89)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:753)
at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:77)
at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:64)
at org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:279)
at org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:111)
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1528)
... 33 more
</code></pre>
<ul>
<li>I found some threads on StackOverflow etc discussing this and several suggested increasing the address space for the shell with ulimit</li>
<li>I added <code>ulimit -v unlimited</code> to the <code>/etc/default/tomcat7</code> and restarted Tomcat and now Solr is working again:</li>
</ul>
<p><img src="/cgspace-notes/2019/01/solr-stats-incorrect.png" alt="Solr stats working" /></p>
<ul>
<li>Some StackOverflow discussions related to this:
<ul>
<li><a href="https://stackoverflow.com/questions/2895417/solrexception-internal-server-error/3035916#3035916">https://stackoverflow.com/questions/2895417/solrexception-internal-server-error/3035916#3035916</a></li>
<li><a href="https://stackoverflow.com/questions/11683850/how-much-memory-could-vm-use">https://stackoverflow.com/questions/11683850/how-much-memory-could-vm-use</a></li>
<li><a href="https://stackoverflow.com/questions/8892143/error-when-opening-a-lucene-index-map-failed/8893684#8893684">https://stackoverflow.com/questions/8892143/error-when-opening-a-lucene-index-map-failed/8893684#8893684</a></li>
</ul></li>
<li>Abenet was asking if the Atmire Usage Stats are correct because they are over 2 million the last few months…</li>
<li>For 2019-01 alone the Usage Stats are already around 1.2 million</li>
<li>I tried to look in the nginx logs to see how many raw requests there are so far this month and it’s about 1.4 million:</li>
</ul>
<pre><code># time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Jan/2019"
1442874
real 0m17.161s
user 0m16.205s
sys 0m2.396s
</code></pre>
<h2 id="2019-01-17">2019-01-17</h2>
<ul>
<li>Send reminder to Atmire about purchasing the <a href="https://tracker.atmire.com/tickets-cgiar-ilri/view-ticket?id=657">MQM module</a></li>
<li>Trying to decide the solid action points for CGSpace on the CG Core 2.0 metadata…</li>
<li>It’s difficult to decide some of these because the current CG Core 2.0 document does not provide guidance or rationale (yet)!</li>
<li>Also, there is not a good Dublin Core reference (or maybe I just don’t understand?)</li>
<li>Several authoritative documents on Dublin Core appear to be:
<ul>
<li><a href="http://dublincore.org/documents/dces/">Dublin Core Metadata Element Set, Version 1.1: Reference Description</a></li>
<li><a href="http://www.dublincore.org/documents/dcmi-terms/">DCMI Metadata Terms</a></li>
</ul></li>
<li>And what is the relationship between DC and DCTERMS?</li>
<li>DSpace uses DCTERMS in the metadata it embeds in XMLUI item views!</li>
<li>We really need to look at this more carefully and see the impacts that might be made from switching core fields like languages, abstract, authors, etc</li>
<li>We can check WorldFish and MELSpace repositories to see what effects these changes have had on theirs because they have already adopted some of these changes…</li>
<li>I think I understand the difference between DC and DCTERMS finally: DC is the original set of fifteen elements and DCTERMS is the newer version that was supposed to address much of the drawbacks of the original with regards to digital content</li>
<li>We might be able to use some proper fields for citation, abstract, etc that are part of DCTERMS</li>
<li>To make matters more confusing, there is also “qualified Dublin Core” that uses the original fifteen elements of legacy DC and qualifies them, like <code>dc.date.accessioned</code>
<ul>
<li>According to Wikipedia <a href="https://en.wikipedia.org/wiki/Dublin_Core">Qualified Dublin Core was superseded by DCTERMS in 2008</a>!</li>
</ul></li>
<li>So we should be trying to use DCTERMS where possible, unless it is some internal thing that might mess up DSpace (like dates)</li>
<li>“Elements 1.1” means legacy DC</li>
<li>Possible action list for CGSpace:
<ul>
<li>dc.description.abstract → dcterms.abstract</li>
<li>dc.description.version → cg.peer-reviewed (or cg.peer-review-status?)</li>
<li>dc.description.sponsorship → cg.contributor.donor</li>
<li>dc.contributor.author → dc.creator</li>
<li>dc.language.iso → dcterms.language</li>
<li>cg.identifier.url → dcterms.identifier</li>
<li>dc.identifier.citation → dcterms.bibliographicCitation</li>
<li>dc.relation.ispartofseries → dcterms.isPartOf</li>
<li>cg.targetaudience → dcterms.audience</li>
</ul></li>
</ul>
<h2 id="2019-01-19">2019-01-19</h2>
<ul>
<li>There’s no official set of Dublin Core qualifiers so I can’t tell if things like <code>dc.contributor.author</code> that are used by DSpace are official</li>
<li>I found a great <a href="https://www.dri.ie/sites/default/files/files/qualified-dublin-core-metadata-guidelines.pdf">presentation from 2015 by the Digital Repository of Ireland</a> that discusses using MARC Relator Terms with Dublin Core elements</li>
<li>It seems that <code>dc.contributor.author</code> would be a supported term according to this <a href="https://memory.loc.gov/diglib/loc.terms/relators/dc-contributor.html">Library of Congress list</a> linked from the <a href="http://dublincore.org/usage/documents/relators/">Dublin Core website</a></li>
<li>The Library of Congress document specifically says:</li>
</ul>
<p>These terms conform with the DCMI Abstract Model and may be used in DCMI application profiles. DCMI endorses their use with Dublin Core elements as indicated.</p>
<h2 id="2019-01-20">2019-01-20</h2>
<ul>
<li>That’s weird, I logged into DSpace Test (linode19) and it says it has been up for 213 days:</li>
</ul>
<pre><code># w
04:46:14 up 213 days, 7:25, 4 users, load average: 1.94, 1.50, 1.35
</code></pre>
<ul>
<li>I’ve definitely rebooted it several times in the past few months… according to <code>journalctl -b</code> it was a few weeks ago on 2019-01-02</li>
<li>I re-ran the Ansible DSpace tag, ran all system updates, and rebooted the host</li>
<li>After rebooting I notice that the Linode kernel went down from 4.19.8 to 4.18.16…</li>
<li>Atmire sent a quote on our <a href="https://tracker.atmire.com/tickets-cgiar-ilri/view-ticket?id=657">ticket about purchasing the Metadata Quality Module (MQM) for DSpace 5.8</a></li>
<li>Abenet asked me for an <a href="https://cgspace.cgiar.org/open-search/discover?query=crpsubject:Livestock&sort_by=3&order=DESC">OpenSearch query that could generate and RSS feed for items in the Livestock CRP</a></li>
<li>According to my notes, <code>sort_by=3</code> is accession date (as configured in `dspace.cfg)</li>
<li>The query currently shows 3023 items, but a <a href="https://cgspace.cgiar.org/discover?filtertype_1=crpsubject&filter_relational_operator_1=equals&filter_1=Livestock&submit_apply_filter=&query=">Discovery search for Livestock CRP only returns 858 items</a></li>
<li>That query seems to return items tagged with <code>Livestock and Fish</code> CRP as well… hmm.</li>
</ul>
<h2 id="2019-01-21">2019-01-21</h2>
<ul>
<li>Investigating running Tomcat 7 on Ubuntu 18.04 with the tarball and a custom systemd package instead of waiting for our DSpace to get compatible with Ubuntu 18.04’s Tomcat 8.5</li>
<li>I could either run with a simple <code>tomcat7.service</code> like this:</li>
</ul>
<pre><code>[Unit]
Description=Apache Tomcat 7 Web Application Container
After=network.target
[Service]
Type=forking
ExecStart=/path/to/apache-tomcat-7.0.92/bin/startup.sh
ExecStop=/path/to/apache-tomcat-7.0.92/bin/shutdown.sh
User=aorth
Group=aorth
[Install]
WantedBy=multi-user.target
</code></pre>
<ul>
<li>Or try to use adapt a real systemd service like Arch Linux’s:</li>
</ul>
<pre><code>[Unit]
Description=Tomcat 7 servlet container
After=network.target
[Service]
Type=forking
PIDFile=/var/run/tomcat7.pid
Environment=CATALINA_PID=/var/run/tomcat7.pid
Environment=TOMCAT_JAVA_HOME=/usr/lib/jvm/default-runtime
Environment=CATALINA_HOME=/usr/share/tomcat7
Environment=CATALINA_BASE=/usr/share/tomcat7
Environment=CATALINA_OPTS=
Environment=ERRFILE=SYSLOG
Environment=OUTFILE=SYSLOG
ExecStart=/usr/bin/jsvc \
-Dcatalina.home=${CATALINA_HOME} \
-Dcatalina.base=${CATALINA_BASE} \
-Djava.io.tmpdir=/var/tmp/tomcat7/temp \
-cp /usr/share/java/commons-daemon.jar:/usr/share/java/eclipse-ecj.jar:${CATALINA_HOME}/bin/bootstrap.jar:${CATALINA_HOME}/bin/tomcat-juli.jar \
-user tomcat7 \
-java-home ${TOMCAT_JAVA_HOME} \
-pidfile /var/run/tomcat7.pid \
-errfile ${ERRFILE} \
-outfile ${OUTFILE} \
$CATALINA_OPTS \
org.apache.catalina.startup.Bootstrap
ExecStop=/usr/bin/jsvc \
-pidfile /var/run/tomcat7.pid \
-stop \
org.apache.catalina.startup.Bootstrap
[Install]
WantedBy=multi-user.target
</code></pre>
<ul>
<li>I see that <code>jsvc</code> and <code>libcommons-daemon-java</code> are both available on Ubuntu so that should be easy to port</li>
<li>We probably don’t need Eclipse Java Bytecode Compiler (ecj)</li>
<li>I tested Tomcat 7.0.92 on Arch Linux using the <code>tomcat7.service</code> with <code>jsvc</code> and it works… nice!</li>
<li>I think I might manage this the same way I do the restic releases in the <a href="https://github.com/ilri/rmg-ansible-public">Ansible infrastructure scripts</a>, where I download a specific version and symlink to some generic location without the version number</li>
<li>I verified that there is indeed an issue with sharded Solr statistics cores on DSpace, which will cause inaccurate results in the dspace-statistics-api:</li>
</ul>
<pre><code>$ http 'http://localhost:3000/solr/statistics/select?indent=on&rows=0&q=type:2+id:11576&fq=isBot:false&fq=statistics_type:view' | grep numFound
<result name="response" numFound="33" start="0">
$ http 'http://localhost:3000/solr/statistics-2018/select?indent=on&rows=0&q=type:2+id:11576&fq=isBot:false&fq=statistics_type:view' | grep numFound
<result name="response" numFound="241" start="0">
</code></pre>
<ul>
<li>I opened an issue on the GitHub issue tracker (<a href="https://github.com/ilri/dspace-statistics-api/issues/10">#10</a>)</li>
<li>I don’t think the <a href="https://solrclient.readthedocs.io/en/latest/">SolrClient library</a> we are currently using supports these type of queries so we might have to just do raw queries with requests</li>
</ul>
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<h4>Recent Posts</h4>
<ol class="list-unstyled">
<li><a href="/cgspace-notes/2019-01/">January, 2019</a></li>
<li><a href="/cgspace-notes/2018-12/">December, 2018</a></li>
<li><a href="/cgspace-notes/2018-11/">November, 2018</a></li>
<li><a href="/cgspace-notes/2018-10/">October, 2018</a></li>
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