Add notes for 2018-04-10

2018-04-10 08:27:55 +03:00 · 2018-04-10 08:27:55 +03:00 · 6f3b199d9f
parent f45ab64261
commit 6f3b199d9f
61 changed files with 366 additions and 70 deletions
--- a/content/posts/2017-11.md
+++ b/content/posts/2017-11.md
@ -540,9 +540,9 @@ $ grep 104.196.152.243 dspace.log.2017-11-07 | grep -o -E 'session_id=[A-Z0-9]{3
 - What's amazing is that it seems to reuse its Java session across all requests:

 ```
-$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=5.9.6.51' /home/cgspace.cgiar.org/log/dspace.log.2017-11-12
+$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=5.9.6.51' dspace.log.2017-11-12
 1558
-$ grep 5.9.6.51 /home/cgspace.cgiar.org/log/dspace.log.2017-11-12 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
+$ grep 5.9.6.51 dspace.log.2017-11-12 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
 1
 ```

@ -552,7 +552,7 @@ $ grep 5.9.6.51 /home/cgspace.cgiar.org/log/dspace.log.2017-11-12 | grep -o -E '
 ```
 # grep 95.108.181.88 /var/log/nginx/access.log | tail -n 1
 95.108.181.88 - - [12/Nov/2017:08:33:17 +0000] "GET /bitstream/handle/10568/57004/GenebankColombia_23Feb2015.pdf HTTP/1.1" 200 972019 "-" "Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)"
-$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' /home/cgspace.cgiar.org/log/dspace.log.2017-11-12
+$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' dspace.log.2017-11-12
 991
 ```

--- a/content/posts/2018-04.md
+++ b/content/posts/2018-04.md
@ -78,3 +78,145 @@ $ git rebase -i dspace-5.8
  - DS-3583 Usage of correct Collection Array (#1731) (upstream commit on dspace-5_x: c8f62e6f496fa86846bfa6bcf2d16811087d9761)
 - ... but somehow git knew, and didn't include them in my interactive rebase!
 - I need to send this branch to Atmire and also arrange payment (see [ticket #560](https://tracker.atmire.com/tickets-cgiar-ilri/view-ticket?id=560) in their tracker)
+- Fix Sisay's SSH access to the new DSpace Test server (linode19)
+
+## 2018-04-05
+
+- Fix Sisay's sudo access on the new DSpace Test server (linode19)
+- The reindexing process on DSpace Test took _forever_ yesterday:
+
+```
+$ time schedtool -D -e ionice -c2 -n7 nice -n19 dspace index-discovery -b
+
+real    599m32.961s
+user    9m3.947s
+sys     2m52.585s
+```
+
+- So we really should not use this Linode block storage for Solr
+- Assetstore might be fine but would complicate things with configuration and deployment (ughhh)
+- Better to use Linode block storage only for backup
+- Help Peter with the GDPR compliance / reporting form for CGSpace
+- DSpace Test crashed due to memory issues again:
+
+```
+# grep -c 'java.lang.OutOfMemoryError: Java heap space' /var/log/tomcat7/catalina.out
+16
+```
+
+- I ran all system updates on DSpace Test and rebooted it
+- Proof some records on DSpace Test for Udana from IWMI
+- He has done better with the small syntax and consistency issues but then there are larger concerns with not linking to DOIs, copying titles incorrectly, etc
+
+## 2018-04-10
+
+- I got a notice that CGSpace CPU usage was very high this morning
+- Looking at the nginx logs, here are the top users today so far:
+
+```
+# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "10/Apr/2018" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10                                                                                                   
+    282 207.46.13.112
+    286 54.175.208.220
+    287 207.46.13.113
+    298 66.249.66.153
+    322 207.46.13.114
+    780 104.196.152.243
+   3994 178.154.200.38
+   4295 70.32.83.92
+   4388 95.108.181.88
+   7653 45.5.186.2
+```
+
+- 45.5.186.2 is of course CIAT
+- 95.108.181.88 appears to be Yandex:
+
+```
+95.108.181.88 - - [09/Apr/2018:06:34:16 +0000] "GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1" 200 2638 "-" "Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)"
+```
+
+- And for some reason Yandex created a lot of Tomcat sessions today:
+
+```
+$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' dspace.log.2018-04-10
+4363
+```
+
+- 70.32.83.92 appears to be some harvester we've seen before, but on a new IP
+- They are not creating new Tomcat sessions so there is no problem there
+- 178.154.200.38 also appears to be Yandex, and is also creating many Tomcat sessions:
+
+```
+$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=178.154.200.38' dspace.log.2018-04-10
+3982
+```
+
+- I'm not sure why Yandex creates so many Tomcat sessions, as its user agent should match the Crawler Session Manager valve
+- Let's try a manual request with and without their user agent:
+
+```
+$ http --print Hh https://cgspace.cgiar.org/bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg 'User-Agent:Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)'
+GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1
+Accept: */*
+Accept-Encoding: gzip, deflate
+Connection: keep-alive
+Host: cgspace.cgiar.org
+User-Agent: Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)
+
+HTTP/1.1 200 OK
+Connection: keep-alive
+Content-Language: en-US
+Content-Length: 2638
+Content-Type: image/jpeg;charset=ISO-8859-1
+Date: Tue, 10 Apr 2018 05:18:37 GMT
+Expires: Tue, 10 Apr 2018 06:18:37 GMT
+Last-Modified: Tue, 25 Apr 2017 07:05:54 GMT
+Server: nginx
+Strict-Transport-Security: max-age=15768000
+Vary: User-Agent
+X-Cocoon-Version: 2.2.0
+X-Content-Type-Options: nosniff
+X-Frame-Options: SAMEORIGIN
+X-XSS-Protection: 1; mode=block
+
+$ http --print Hh https://cgspace.cgiar.org/bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg                                                                              
+GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1
+Accept: */*
+Accept-Encoding: gzip, deflate
+Connection: keep-alive
+Host: cgspace.cgiar.org
+User-Agent: HTTPie/0.9.9
+
+HTTP/1.1 200 OK
+Connection: keep-alive
+Content-Language: en-US
+Content-Length: 2638
+Content-Type: image/jpeg;charset=ISO-8859-1
+Date: Tue, 10 Apr 2018 05:20:08 GMT
+Expires: Tue, 10 Apr 2018 06:20:08 GMT
+Last-Modified: Tue, 25 Apr 2017 07:05:54 GMT
+Server: nginx
+Set-Cookie: JSESSIONID=31635DB42B66D6A4208CFCC96DD96875; Path=/; Secure; HttpOnly
+Strict-Transport-Security: max-age=15768000
+Vary: User-Agent
+X-Cocoon-Version: 2.2.0
+X-Content-Type-Options: nosniff
+X-Frame-Options: SAMEORIGIN
+X-XSS-Protection: 1; mode=block
+```
+
+- So it definitely looks like Yandex requests are getting assigned a session from the Crawler Session Manager valve
+- And if I look at the DSpace log I see its IP sharing a session with other crawlers like Google (66.249.66.153)
+- Indeed the number of Tomcat sessions appears to be normal:
+
+![Tomcat sessions week](/cgspace-notes/2018/04/jmx_dspace_sessions-week.png)
+
+- Looks like the number of total requests processed by nginx in March went down from the previous months:
+
+```
+# time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Mar/2018"
+2266594
+
+real    0m13.658s
+user    0m16.533s
+sys     0m1.087s
+```
--- a/docs/2015-11/index.html
+++ b/docs/2015-11/index.html
@ -53,7 +53,7 @@ $ psql -c &#39;SELECT * from pg_stat_activity;&#39; | grep idle | grep -c cgspac


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2015-12/index.html
+++ b/docs/2015-12/index.html
@ -55,7 +55,7 @@ Replace lzop with xz in log compression cron jobs on DSpace Test—it uses less


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-01/index.html
+++ b/docs/2016-01/index.html
@ -45,7 +45,7 @@ Update GitHub wiki for documentation of maintenance tasks.


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-02/index.html
+++ b/docs/2016-02/index.html
@ -59,7 +59,7 @@ Also, lots of things like &ldquo;COTE D`LVOIRE&rdquo; and &ldquo;COTE D IVOIRE&r


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-03/index.html
+++ b/docs/2016-03/index.html
@ -45,7 +45,7 @@ Reinstall my local (Mac OS X) DSpace stack with Tomcat 7, PostgreSQL 9.3, and Ja


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-04/index.html
+++ b/docs/2016-04/index.html
@ -49,7 +49,7 @@ Also, I noticed the checker log has some errors we should pay attention to:


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-05/index.html
+++ b/docs/2016-05/index.html
@ -53,7 +53,7 @@ There are 3,000 IPs accessing the REST API in a 24-hour period!


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-06/index.html
+++ b/docs/2016-06/index.html
@ -51,7 +51,7 @@ Working on second phase of metadata migration, looks like this will work for mov


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-07/index.html
+++ b/docs/2016-07/index.html
@ -67,7 +67,7 @@ In this case the select query was showing 95 results before the update


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-08/index.html
+++ b/docs/2016-08/index.html
@ -61,7 +61,7 @@ $ git rebase -i dspace-5.5


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-09/index.html
+++ b/docs/2016-09/index.html
@ -53,7 +53,7 @@ $ ldapsearch -x -H ldaps://svcgroot2.cgiarad.org:3269/ -b &quot;dc=cgiarad,dc=or


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-10/index.html
+++ b/docs/2016-10/index.html
@ -61,7 +61,7 @@ I exported a random item&rsquo;s metadata as CSV, deleted all columns except id


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-11/index.html
+++ b/docs/2016-11/index.html
@ -45,7 +45,7 @@ Add dc.type to the output options for Atmire&rsquo;s Listings and Reports module


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2016-12/index.html
+++ b/docs/2016-12/index.html
@ -69,7 +69,7 @@ Another worrying error from dspace.log is:


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-01/index.html
+++ b/docs/2017-01/index.html
@ -45,7 +45,7 @@ I asked on the dspace-tech mailing list because it seems to be broken, and actua


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-02/index.html
+++ b/docs/2017-02/index.html
@ -73,7 +73,7 @@ Looks like we&rsquo;ll be using cg.identifier.ccafsprojectpii as the field name


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-03/index.html
+++ b/docs/2017-03/index.html
@ -77,7 +77,7 @@ $ identify ~/Desktop/alc_contrastes_desafios.jpg


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-04/index.html
+++ b/docs/2017-04/index.html
@ -63,7 +63,7 @@ $ [dspace]/bin/dspace filter-media -f -i 10568/16498 -p &quot;ImageMagick PDF Th


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-05/index.html
+++ b/docs/2017-05/index.html
@ -29,7 +29,7 @@
 <meta name="twitter:card" content="summary"/>
 <meta name="twitter:title" content="May, 2017"/>
 <meta name="twitter:description" content="2017-05-01  ICARDA apparently started working on CG Core on their MEL repository They have done a few cg.* fields, but not very consistent and even copy some of CGSpace items:  https://mel.cgiar.org/xmlui/handle/20.500.11766/6911?show=full https://cgspace.cgiar.org/handle/10568/73683   2017-05-02  Atmire got back about the Workflow Statistics issue, and apparently it&rsquo;s a bug in the CUA module so they will send us a pull request  2017-05-04  Sync DSpace Test with database and assetstore from CGSpace Re-deploy DSpace Test with Atmire&rsquo;s CUA patch for workflow statistics, run system updates, and restart the server Now I can see the workflow statistics and am able to select users, but everything returns 0 items Megan says there are still some mapped items are not appearing since last week, so I forced a full index-discovery -b Need to remember to check if the collection has more items (currently 39 on CGSpace, but 118 on the freshly reindexed DSPace Test) tomorrow: https://cgspace."/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-06/index.html
+++ b/docs/2017-06/index.html
@ -29,7 +29,7 @@
 <meta name="twitter:card" content="summary"/>
 <meta name="twitter:title" content="June, 2017"/>
 <meta name="twitter:description" content="2017-06-01  After discussion with WLE and CGSpace content people, we decided to just add one metadata field for the WLE Research Themes The cg.identifier.wletheme field will be used for both Phase I and Phase II Research Themes Then we&rsquo;ll create a new sub-community for Phase II and create collections for the research themes there The current &ldquo;Research Themes&rdquo; community will be renamed to &ldquo;WLE Phase I Research Themes&rdquo; Tagged all items in the current Phase I collections with their appropriate themes Create pull request to add Phase II research themes to the submission form: #328 Add cg."/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-07/index.html
+++ b/docs/2017-07/index.html
@ -57,7 +57,7 @@ We can use PostgreSQL&rsquo;s extended output format (-x) plus sed to format the


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-08/index.html
+++ b/docs/2017-08/index.html
@ -77,7 +77,7 @@ Then I cleaned up the author authorities and HTML characters in OpenRefine and s


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-09/index.html
+++ b/docs/2017-09/index.html
@ -53,7 +53,7 @@ Ask Sisay to clean up the WLE approvers a bit, as Marianne&rsquo;s user account


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-10/index.html
+++ b/docs/2017-10/index.html
@ -57,7 +57,7 @@ Add Katherine Lutz to the groups for content submission and edit steps of the CG


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2017-11/index.html
+++ b/docs/2017-11/index.html
@ -77,7 +77,7 @@ COPY 54701


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
@ -754,9 +754,9 @@ $ grep 104.196.152.243 dspace.log.2017-11-07 | grep -o -E 'session_id=[A-Z0-9]{3
 <li>What&rsquo;s amazing is that it seems to reuse its Java session across all requests:</li>
 </ul>

-<pre><code>$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=5.9.6.51' /home/cgspace.cgiar.org/log/dspace.log.2017-11-12
+<pre><code>$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=5.9.6.51' dspace.log.2017-11-12
 1558
-$ grep 5.9.6.51 /home/cgspace.cgiar.org/log/dspace.log.2017-11-12 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
+$ grep 5.9.6.51 dspace.log.2017-11-12 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
 1
 </code></pre>

@ -767,7 +767,7 @@ $ grep 5.9.6.51 /home/cgspace.cgiar.org/log/dspace.log.2017-11-12 | grep -o -E '

 <pre><code># grep 95.108.181.88 /var/log/nginx/access.log | tail -n 1
 95.108.181.88 - - [12/Nov/2017:08:33:17 +0000] &quot;GET /bitstream/handle/10568/57004/GenebankColombia_23Feb2015.pdf HTTP/1.1&quot; 200 972019 &quot;-&quot; &quot;Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)&quot;
-$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' /home/cgspace.cgiar.org/log/dspace.log.2017-11-12
+$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' dspace.log.2017-11-12
 991
 </code></pre>

--- a/docs/2017-12/index.html
+++ b/docs/2017-12/index.html
@ -47,7 +47,7 @@ The list of connections to XMLUI and REST API for today:


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2018-01/index.html
+++ b/docs/2018-01/index.html
@ -185,7 +185,7 @@ Danny wrote to ask for help renewing the wildcard ilri.org certificate and I adv


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2018-02/index.html
+++ b/docs/2018-02/index.html
@ -47,7 +47,7 @@ I copied the logic in the jmx_tomcat_dbpools provided by Ubuntu&rsquo;s munin-pl


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2018-03/index.html
+++ b/docs/2018-03/index.html
@ -41,7 +41,7 @@ Export a CSV of the IITA community metadata for Martin Mueller


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
--- a/docs/2018-04/index.html
+++ b/docs/2018-04/index.html
@ -21,7 +21,7 @@ Catalina logs at least show some memory errors yesterday:

 <meta property="article:published_time" content="2018-04-01T16:13:54&#43;02:00"/>

-<meta property="article:modified_time" content="2018-04-04T15:57:34&#43;03:00"/>
+<meta property="article:modified_time" content="2018-04-04T17:01:08&#43;03:00"/>



@ -43,7 +43,7 @@ Catalina logs at least show some memory errors yesterday:


 "/>
-<meta name="generator" content="Hugo 0.38" />
+<meta name="generator" content="Hugo 0.38.2" />


    
@ -53,9 +53,9 @@ Catalina logs at least show some memory errors yesterday:
  "@type": "BlogPosting",
  "headline": "April, 2018",
  "url": "https://alanorth.github.io/cgspace-notes/2018-04/",
-  "wordCount": "423",
+  "wordCount": "1005",
  "datePublished": "2018-04-01T16:13:54&#43;02:00",
-  "dateModified": "2018-04-04T15:57:34&#43;03:00",
+  "dateModified": "2018-04-04T17:01:08&#43;03:00",
  "author": {
    "@type": "Person",
    "name": "Alan Orth"
@ -206,8 +206,162 @@ $ git rebase -i dspace-5.8
 </ul></li>
 <li>&hellip; but somehow git knew, and didn&rsquo;t include them in my interactive rebase!</li>
 <li>I need to send this branch to Atmire and also arrange payment (see <a href="https://tracker.atmire.com/tickets-cgiar-ilri/view-ticket?id=560">ticket #560</a> in their tracker)</li>
+<li>Fix Sisay&rsquo;s SSH access to the new DSpace Test server (linode19)</li>
 </ul>

+<h2 id="2018-04-05">2018-04-05</h2>
+
+<ul>
+<li>Fix Sisay&rsquo;s sudo access on the new DSpace Test server (linode19)</li>
+<li>The reindexing process on DSpace Test took <em>forever</em> yesterday:</li>
+</ul>
+
+<pre><code>$ time schedtool -D -e ionice -c2 -n7 nice -n19 dspace index-discovery -b
+
+real    599m32.961s
+user    9m3.947s
+sys     2m52.585s
+</code></pre>
+
+<ul>
+<li>So we really should not use this Linode block storage for Solr</li>
+<li>Assetstore might be fine but would complicate things with configuration and deployment (ughhh)</li>
+<li>Better to use Linode block storage only for backup</li>
+<li>Help Peter with the GDPR compliance / reporting form for CGSpace</li>
+<li>DSpace Test crashed due to memory issues again:</li>
+</ul>
+
+<pre><code># grep -c 'java.lang.OutOfMemoryError: Java heap space' /var/log/tomcat7/catalina.out
+16
+</code></pre>
+
+<ul>
+<li>I ran all system updates on DSpace Test and rebooted it</li>
+<li>Proof some records on DSpace Test for Udana from IWMI</li>
+<li>He has done better with the small syntax and consistency issues but then there are larger concerns with not linking to DOIs, copying titles incorrectly, etc</li>
+</ul>
+
+<h2 id="2018-04-10">2018-04-10</h2>
+
+<ul>
+<li>I got a notice that CGSpace CPU usage was very high this morning</li>
+<li>Looking at the nginx logs, here are the top users today so far:</li>
+</ul>
+
+<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;10/Apr/2018&quot; | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10                                                                                                   
+    282 207.46.13.112
+    286 54.175.208.220
+    287 207.46.13.113
+    298 66.249.66.153
+    322 207.46.13.114
+    780 104.196.152.243
+   3994 178.154.200.38
+   4295 70.32.83.92
+   4388 95.108.181.88
+   7653 45.5.186.2
+</code></pre>
+
+<ul>
+<li>45.5.186.2 is of course CIAT</li>
+<li>95.108.181.88 appears to be Yandex:</li>
+</ul>
+
+<pre><code>95.108.181.88 - - [09/Apr/2018:06:34:16 +0000] &quot;GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1&quot; 200 2638 &quot;-&quot; &quot;Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)&quot;
+</code></pre>
+
+<ul>
+<li>And for some reason Yandex created a lot of Tomcat sessions today:</li>
+</ul>
+
+<pre><code>$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' dspace.log.2018-04-10
+4363
+</code></pre>
+
+<ul>
+<li>70.32.83.92 appears to be some harvester we&rsquo;ve seen before, but on a new IP</li>
+<li>They are not creating new Tomcat sessions so there is no problem there</li>
+<li>178.154.200.38 also appears to be Yandex, and is also creating many Tomcat sessions:</li>
+</ul>
+
+<pre><code>$ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=178.154.200.38' dspace.log.2018-04-10
+3982
+</code></pre>
+
+<ul>
+<li>I&rsquo;m not sure why Yandex creates so many Tomcat sessions, as its user agent should match the Crawler Session Manager valve</li>
+<li>Let&rsquo;s try a manual request with and without their user agent:</li>
+</ul>
+
+<pre><code>$ http --print Hh https://cgspace.cgiar.org/bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg 'User-Agent:Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)'
+GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1
+Accept: */*
+Accept-Encoding: gzip, deflate
+Connection: keep-alive
+Host: cgspace.cgiar.org
+User-Agent: Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)
+
+HTTP/1.1 200 OK
+Connection: keep-alive
+Content-Language: en-US
+Content-Length: 2638
+Content-Type: image/jpeg;charset=ISO-8859-1
+Date: Tue, 10 Apr 2018 05:18:37 GMT
+Expires: Tue, 10 Apr 2018 06:18:37 GMT
+Last-Modified: Tue, 25 Apr 2017 07:05:54 GMT
+Server: nginx
+Strict-Transport-Security: max-age=15768000
+Vary: User-Agent
+X-Cocoon-Version: 2.2.0
+X-Content-Type-Options: nosniff
+X-Frame-Options: SAMEORIGIN
+X-XSS-Protection: 1; mode=block
+
+$ http --print Hh https://cgspace.cgiar.org/bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg                                                                              
+GET /bitstream/handle/10568/21794/ILRI_logo_usage.jpg.jpg HTTP/1.1
+Accept: */*
+Accept-Encoding: gzip, deflate
+Connection: keep-alive
+Host: cgspace.cgiar.org
+User-Agent: HTTPie/0.9.9
+
+HTTP/1.1 200 OK
+Connection: keep-alive
+Content-Language: en-US
+Content-Length: 2638
+Content-Type: image/jpeg;charset=ISO-8859-1
+Date: Tue, 10 Apr 2018 05:20:08 GMT
+Expires: Tue, 10 Apr 2018 06:20:08 GMT
+Last-Modified: Tue, 25 Apr 2017 07:05:54 GMT
+Server: nginx
+Set-Cookie: JSESSIONID=31635DB42B66D6A4208CFCC96DD96875; Path=/; Secure; HttpOnly
+Strict-Transport-Security: max-age=15768000
+Vary: User-Agent
+X-Cocoon-Version: 2.2.0
+X-Content-Type-Options: nosniff
+X-Frame-Options: SAMEORIGIN
+X-XSS-Protection: 1; mode=block
+</code></pre>
+
+<ul>
+<li>So it definitely looks like Yandex requests are getting assigned a session from the Crawler Session Manager valve</li>
+<li>And if I look at the DSpace log I see its IP sharing a session with other crawlers like Google (66.249.66.153)</li>
+<li>Indeed the number of Tomcat sessions appears to be normal:</li>
+</ul>
+
+<p><img src="/cgspace-notes/2018/04/jmx_dspace_sessions-week.png" alt="Tomcat sessions week" /></p>
+
+<ul>
+<li>Looks like the number of total requests processed by nginx in March went down from the previous months:</li>
+</ul>
+
+<pre><code># time zcat --force /var/log/nginx/* | grep -cE &quot;[0-9]{1,2}/Mar/2018&quot;
+2266594
+
+real    0m13.658s
+user    0m16.533s
+sys     0m1.087s
+</code></pre>
+
  

  
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