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<meta property="og:title" content="February, 2019" />
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<meta property="og:description" content="2019-02-01
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Linode has alerted a few times since last night that the CPU usage on CGSpace (linode18) was high despite me increasing the alert threshold last week from 250% to 275%—I might need to increase it again!
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The top IPs before, during, and after this latest alert tonight were:
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# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "01/Feb/2019:(17|18|19|20|21)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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245 207.46.13.5
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332 54.70.40.11
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385 5.143.231.38
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405 207.46.13.173
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405 207.46.13.75
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1117 66.249.66.219
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1121 35.237.175.180
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1546 5.9.6.51
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2474 45.5.186.2
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5490 85.25.237.71
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85.25.237.71 is the “Linguee Bot” that I first saw last month
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The Solr statistics the past few months have been very high and I was wondering if the web server logs also showed an increase
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There were just over 3 million accesses in the nginx logs last month:
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# time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Jan/2019"
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3018243
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real 0m19.873s
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user 0m22.203s
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sys 0m1.979s
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" />
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<meta name="twitter:title" content="February, 2019"/>
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<meta name="twitter:description" content="2019-02-01
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Linode has alerted a few times since last night that the CPU usage on CGSpace (linode18) was high despite me increasing the alert threshold last week from 250% to 275%—I might need to increase it again!
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The top IPs before, during, and after this latest alert tonight were:
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# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "01/Feb/2019:(17|18|19|20|21)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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245 207.46.13.5
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332 54.70.40.11
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385 5.143.231.38
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405 207.46.13.173
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405 207.46.13.75
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1117 66.249.66.219
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1121 35.237.175.180
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1546 5.9.6.51
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2474 45.5.186.2
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5490 85.25.237.71
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85.25.237.71 is the “Linguee Bot” that I first saw last month
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The Solr statistics the past few months have been very high and I was wondering if the web server logs also showed an increase
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There were just over 3 million accesses in the nginx logs last month:
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# time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Jan/2019"
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3018243
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real 0m19.873s
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user 0m22.203s
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sys 0m1.979s
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"/>
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<header class="blog-header">
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<h1 class="blog-title"><a href="https://alanorth.github.io/cgspace-notes/" rel="home">CGSpace Notes</a></h1>
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<p class="lead blog-description">Documenting day-to-day work on the <a href="https://cgspace.cgiar.org">CGSpace</a> repository.</p>
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<h2 class="blog-post-title"><a href="https://alanorth.github.io/cgspace-notes/2019-02/">February, 2019</a></h2>
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<p class="blog-post-meta"><time datetime="2019-02-01T21:37:30+02:00">Fri Feb 01, 2019</time> by Alan Orth in
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<i class="fa fa-tag" aria-hidden="true"></i> <a href="/cgspace-notes/tags/notes" rel="tag">Notes</a>
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</p>
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</header>
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<h2 id="2019-02-01">2019-02-01</h2>
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<ul>
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<li>Linode has alerted a few times since last night that the CPU usage on CGSpace (linode18) was high despite me increasing the alert threshold last week from 250% to 275%—I might need to increase it again!</li>
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<li>The top IPs before, during, and after this latest alert tonight were:</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "01/Feb/2019:(17|18|19|20|21)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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245 207.46.13.5
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332 54.70.40.11
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385 5.143.231.38
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405 207.46.13.173
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405 207.46.13.75
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1117 66.249.66.219
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1121 35.237.175.180
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1546 5.9.6.51
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2474 45.5.186.2
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5490 85.25.237.71
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</code></pre>
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<ul>
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<li><code>85.25.237.71</code> is the “Linguee Bot” that I first saw last month</li>
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<li>The Solr statistics the past few months have been very high and I was wondering if the web server logs also showed an increase</li>
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<li>There were just over 3 million accesses in the nginx logs last month:</li>
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</ul>
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<pre><code># time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Jan/2019"
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3018243
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real 0m19.873s
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user 0m22.203s
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sys 0m1.979s
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</code></pre>
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<ul>
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<li>Normally I’d say this was very high, but <a href="/cgspace-notes/2018-02/">about this time last year</a> I remember thinking the same thing when we had 3.1 million…</li>
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<li>I will have to keep an eye on this to see if there is some error in Solr…</li>
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<li>Atmire sent their <a href="https://github.com/ilri/DSpace/pull/407">pull request to re-enable the Metadata Quality Module (MQM) on our <code>5_x-dev</code> branch</a> today
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<ul>
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<li>I will test it next week and send them feedback</li>
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</ul></li>
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</ul>
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<h2 id="2019-02-02">2019-02-02</h2>
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<ul>
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<li>Another alert from Linode about CGSpace (linode18) this morning, here are the top IPs in the web server logs before, during, and after that time:</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Feb/2019:0(1|2|3|4|5)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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284 18.195.78.144
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329 207.46.13.32
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417 35.237.175.180
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448 34.218.226.147
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694 2a01:4f8:13b:1296::2
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718 2a01:4f8:140:3192::2
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786 137.108.70.14
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1002 5.9.6.51
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6077 85.25.237.71
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8726 45.5.184.2
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</code></pre>
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<ul>
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<li><code>45.5.184.2</code> is CIAT and <code>85.25.237.71</code> is the new Linguee bot that I first noticed a few days ago</li>
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<li>I will increase the Linode alert threshold from 275 to 300% because this is becoming too much!</li>
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<li>I tested the Atmire Metadata Quality Module (MQM)’s duplicate checked on the some <a href="https://dspacetest.cgiar.org/handle/10568/81268">WLE items</a> that I helped Udana with a few months ago on DSpace Test (linode19) and indeed it found many duplicates!</li>
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</ul>
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<h2 id="2019-02-03">2019-02-03</h2>
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<ul>
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<li>This is seriously getting annoying, Linode sent another alert this morning that CGSpace (linode18) load was 377%!</li>
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<li>Here are the top IPs before, during, and after that time:</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "03/Feb/2019:0(5|6|7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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325 85.25.237.71
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340 45.5.184.72
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431 5.143.231.8
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756 5.9.6.51
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1048 34.218.226.147
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1203 66.249.66.219
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1496 195.201.104.240
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4658 205.186.128.185
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4658 70.32.83.92
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4852 45.5.184.2
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</code></pre>
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<ul>
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<li><code>45.5.184.2</code> is CIAT, <code>70.32.83.92</code> and <code>205.186.128.185</code> are Macaroni Bros harvesters for CCAFS I think</li>
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<li><code>195.201.104.240</code> is a new IP address in Germany with the following user agent:</li>
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</ul>
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<pre><code>Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:62.0) Gecko/20100101 Firefox/62.0
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</code></pre>
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<ul>
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<li>This user was making 20–60 requests per minute this morning… seems like I should try to block this type of behavior heuristically, regardless of user agent!</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "03/Feb/2019" | grep 195.201.104.240 | grep -o -E '03/Feb/2019:0[0-9]:[0-9][0-9]' | uniq -c | sort -n | tail -n 20
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19 03/Feb/2019:07:42
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20 03/Feb/2019:07:12
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21 03/Feb/2019:07:27
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21 03/Feb/2019:07:28
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25 03/Feb/2019:07:23
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25 03/Feb/2019:07:29
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26 03/Feb/2019:07:33
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28 03/Feb/2019:07:38
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30 03/Feb/2019:07:31
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33 03/Feb/2019:07:35
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33 03/Feb/2019:07:37
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38 03/Feb/2019:07:40
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43 03/Feb/2019:07:24
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43 03/Feb/2019:07:32
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46 03/Feb/2019:07:36
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47 03/Feb/2019:07:34
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47 03/Feb/2019:07:39
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47 03/Feb/2019:07:41
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51 03/Feb/2019:07:26
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59 03/Feb/2019:07:25
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</code></pre>
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<ul>
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<li>At least they re-used their Tomcat session!</li>
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</ul>
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<pre><code>$ grep -o -E 'session_id=[A-Z0-9]{32}:ip_addr=195.201.104.240' dspace.log.2019-02-03 | sort | uniq | wc -l
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1
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</code></pre>
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<ul>
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<li>This user was making requests to <code>/browse</code>, which is not currently under the existing rate limiting of dynamic pages in our nginx config
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<ul>
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<li>I <a href="https://github.com/ilri/rmg-ansible-public/commit/36dfb072d6724fb5cdc81ef79cab08ed9ce427ad">extended the existing <code>dynamicpages</code> (12/m) rate limit to <code>/browse</code> and <code>/discover</code></a> with an allowance for bursting of up to five requests for “real” users</li>
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</ul></li>
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<li>Run all system updates on linode20 and reboot it
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<ul>
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<li>This will be the new AReS repository explorer server soon</li>
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</ul></li>
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</ul>
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<h2 id="2019-02-04">2019-02-04</h2>
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<ul>
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<li>Generate a list of CTA subjects from CGSpace for Peter:</li>
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</ul>
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<pre><code>dspace=# \copy (SELECT DISTINCT text_value, count(*) FROM metadatavalue WHERE resource_type_id=2 AND metadata_field_id=124 GROUP BY text_value ORDER BY COUNT DESC) to /tmp/cta-subjects.csv with csv header;
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COPY 321
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</code></pre>
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<ul>
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<li>Skype with Michael Victor about CKM and CGSpace</li>
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<li>Discuss the new IITA research theme field with Abenet and decide that we should use <code>cg.identifier.iitatheme</code></li>
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</ul>
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<!-- vim: set sw=2 ts=2: -->
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</article>
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</div> <!-- /.blog-main -->
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<aside class="col-sm-3 ml-auto blog-sidebar">
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<section class="sidebar-module">
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<h4>Recent Posts</h4>
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<ol class="list-unstyled">
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<li><a href="/cgspace-notes/2019-02/">February, 2019</a></li>
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<li><a href="/cgspace-notes/2019-01/">January, 2019</a></li>
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<li><a href="/cgspace-notes/2018-12/">December, 2018</a></li>
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<li><a href="/cgspace-notes/2018-11/">November, 2018</a></li>
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<li><a href="/cgspace-notes/2018-10/">October, 2018</a></li>
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</ol>
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</section>
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<section class="sidebar-module">
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<h4>Links</h4>
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<ol class="list-unstyled">
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<li><a href="https://cgspace.cgiar.org">CGSpace</a></li>
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<li><a href="https://dspacetest.cgiar.org">DSpace Test</a></li>
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<li><a href="https://github.com/ilri/DSpace">CGSpace @ GitHub</a></li>
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</ol>
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</section>
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