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<h2 class="blog-post-title" dir="auto"><a href="https://alanorth.github.io/cgspace-notes/2022-03/">April, 2022</a></h2>
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<time datetime="2022-03-01T10:53:39+03:00">Tue Mar 01, 2022</time>
in
<span class="fas fa-folder" aria-hidden="true"></span>&nbsp;<a href="/cgspace-notes/categories/notes/" rel="category tag">Notes</a>
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</header>
<h2 id="2022-04-01">2022-04-01</h2>
<ul>
<li>I did G1GC tests on DSpace Test (linode26) to compliment the CMS tests I did yesterday
<ul>
<li>The Discovery indexing took this long:</li>
</ul>
</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>real 334m33.625s
</span></span><span style="display:flex;"><span>user 227m51.331s
</span></span><span style="display:flex;"><span>sys 3m43.037s
</span></span></code></pre></div><h2 id="2022-04-04">2022-04-04</h2>
<ul>
<li>Start a full harvest on AReS</li>
<li>Help Marianne with submit/approve access on a new collection on CGSpace</li>
<li>Go back in Gaia&rsquo;s batch reports to find records that she indicated for replacing on CGSpace (ie, those with better new copies, new versions, etc)</li>
<li>Looking at the Solr statistics for 2022-03 on CGSpace
<ul>
<li>I see 54.229.218.204 on Amazon AWS made 49,000 requests, some of which with this user agent: <code>Apache-HttpClient/4.5.9 (Java/1.8.0_322)</code>, and many others with a normal browser agent, so that&rsquo;s fishy!</li>
<li>The DSpace agent pattern <code>http.?agent</code> seems to have caught the first ones, but I&rsquo;ll purge the IP ones</li>
<li>I see 40.77.167.80 is Bing or MSN Bot, but using a normal browser user agent, and if I search Solr for <code>dns:*msnbot* AND dns:*.msn.com.</code> I see over 100,000, which is a problem I noticed a few months ago too&hellip;</li>
<li>I extracted the MSN Bot IPs from Solr using an IP facet, then used the <code>check-spider-ip-hits.sh</code> script to purge them</li>
</ul>
</li>
</ul>
<h2 id="2022-04-10">2022-04-10</h2>
<ul>
<li>Start a full harvest on AReS</li>
</ul>
<h2 id="2022-04-13">2022-04-13</h2>
<ul>
<li>UptimeRobot mailed to say that CGSpace was down
<ul>
<li>I looked and found the load at 44&hellip;</li>
</ul>
</li>
<li>There seem to be a lot of locks from the XMLUI:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ psql -c <span style="color:#e6db74">&#39;SELECT * FROM pg_locks pl LEFT JOIN pg_stat_activity psa ON pl.pid = psa.pid;&#39;</span> | grep -o -E <span style="color:#e6db74">&#39;(dspaceWeb|dspaceApi)&#39;</span> | sort | uniq -c | sort -n
</span></span><span style="display:flex;"><span> 3173 dspaceWeb
</span></span></code></pre></div><ul>
<li>Looking at the top IPs in nginx&rsquo;s access log one IP in particular stands out:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span> 941 66.249.66.222
</span></span><span style="display:flex;"><span> 1224 95.108.213.28
</span></span><span style="display:flex;"><span> 2074 157.90.209.76
</span></span><span style="display:flex;"><span> 3064 66.249.66.221
</span></span><span style="display:flex;"><span> 95743 185.192.69.15
</span></span></code></pre></div><ul>
<li>185.192.69.15 is in the UK</li>
<li>I added a block for that IP in nginx and the load went down&hellip;</li>
</ul>
<h2 id="2022-04-16">2022-04-16</h2>
<ul>
<li>Start harvest on AReS</li>
</ul>
<h2 id="2022-04-18">2022-04-18</h2>
<ul>
<li>I woke up to several notices from UptimeRobot that CGSpace had gone down and up in the night (of course I&rsquo;m on holiday out of the country for Easter)
<ul>
<li>I see there are many locks in use from the XMLUI:</li>
</ul>
</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ psql -c <span style="color:#e6db74">&#39;SELECT * FROM pg_locks pl LEFT JOIN pg_stat_activity psa ON pl.pid = psa.pid;&#39;</span> | grep -o -E <span style="color:#e6db74">&#39;(dspaceWeb|dspaceApi)&#39;</span> | sort | uniq -c
</span></span><span style="display:flex;"><span> 8932 dspaceWeb
</span></span></code></pre></div><ul>
<li>Looking at the top IPs making requests it seems they are Yandex, bingbot, and Googlebot:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span># cat /var/log/nginx/access.log /var/log/nginx/access.log.1 | awk <span style="color:#e6db74">&#39;{print $1}&#39;</span> | sort | uniq -c | sort -h
</span></span><span style="display:flex;"><span> 752 69.162.124.231
</span></span><span style="display:flex;"><span> 759 66.249.64.213
</span></span><span style="display:flex;"><span> 864 66.249.66.222
</span></span><span style="display:flex;"><span> 905 2a01:4f8:221:f::2
</span></span><span style="display:flex;"><span> 1013 84.33.2.97
</span></span><span style="display:flex;"><span> 1201 157.55.39.159
</span></span><span style="display:flex;"><span> 1204 157.55.39.144
</span></span><span style="display:flex;"><span> 1209 157.55.39.102
</span></span><span style="display:flex;"><span> 1217 157.55.39.161
</span></span><span style="display:flex;"><span> 1252 207.46.13.177
</span></span><span style="display:flex;"><span> 1274 157.55.39.162
</span></span><span style="display:flex;"><span> 2553 66.249.66.221
</span></span><span style="display:flex;"><span> 2941 95.108.213.28
</span></span></code></pre></div><ul>
<li>One IP is using a stange user agent though:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>84.33.2.97 - - [18/Apr/2022:00:20:38 +0200] &#34;GET /bitstream/handle/10568/109581/Banana_Blomme%20_2020.pdf.jpg HTTP/1.1&#34; 404 10890 &#34;-&#34; &#34;SomeRandomText&#34;
</span></span></code></pre></div><ul>
<li>Overall, it seems we had 17,000 unique IPs connecting in the last nine hours (currently 9:14AM and log file rolled over at 00:00):</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span># cat /var/log/nginx/access.log | awk <span style="color:#e6db74">&#39;{print $1}&#39;</span> | sort | uniq | wc -l
</span></span><span style="display:flex;"><span>17314
</span></span></code></pre></div><ul>
<li>That&rsquo;s a lot of unique IPs, and I see some patterns of IPs in China making ten to twenty requests each
<ul>
<li>The ISPs I&rsquo;ve seen so far are ChinaNet and China Unicom</li>
</ul>
</li>
<li>I extracted all the IPs from today and resolved them:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span># cat /var/log/nginx/access.log | awk <span style="color:#e6db74">&#39;{print $1}&#39;</span> | sort | uniq &gt; /tmp/2022-04-18-ips.txt
</span></span><span style="display:flex;"><span>$ ./ilri/resolve-addresses-geoip2.py -i /tmp/2022-04-18-ips.txt -o /tmp/2022-04-18-ips.csv
</span></span></code></pre></div><ul>
<li>The top ASNs by IP are:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ csvcut -c <span style="color:#ae81ff">2</span> /tmp/2022-04-18-ips.csv | sed 1d | sort | uniq -c | sort -n | tail -n <span style="color:#ae81ff">10</span>
</span></span><span style="display:flex;"><span> 102 GOOGLE
</span></span><span style="display:flex;"><span> 139 Maxihost LTDA
</span></span><span style="display:flex;"><span> 165 AMAZON-02
</span></span><span style="display:flex;"><span> 393 &#34;China Mobile Communications Group Co., Ltd.&#34;
</span></span><span style="display:flex;"><span> 473 AMAZON-AES
</span></span><span style="display:flex;"><span> 616 China Mobile communications corporation
</span></span><span style="display:flex;"><span> 642 M247 Ltd
</span></span><span style="display:flex;"><span> 2336 HostRoyale Technologies Pvt Ltd
</span></span><span style="display:flex;"><span> 4556 Chinanet
</span></span><span style="display:flex;"><span> 5527 CHINA UNICOM China169 Backbone
</span></span><span style="display:flex;"><span>$ csvcut -c <span style="color:#ae81ff">4</span> /tmp/2022-04-18-ips.csv | sed 1d | sort | uniq -c | sort -n | tail -n <span style="color:#ae81ff">10</span>
</span></span><span style="display:flex;"><span> 139 262287
</span></span><span style="display:flex;"><span> 165 16509
</span></span><span style="display:flex;"><span> 180 204287
</span></span><span style="display:flex;"><span> 393 9808
</span></span><span style="display:flex;"><span> 473 14618
</span></span><span style="display:flex;"><span> 615 56041
</span></span><span style="display:flex;"><span> 642 9009
</span></span><span style="display:flex;"><span> 2156 203020
</span></span><span style="display:flex;"><span> 4556 4134
</span></span><span style="display:flex;"><span> 5527 4837
</span></span></code></pre></div><ul>
<li>I spot checked a few IPs from each of these and they are definitely just making bullshit requests to Discovery and HTML sitemap etc</li>
<li>I will download the IP blocks for each ASN except Google and Amazon and ban them</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ wget https://asn.ipinfo.app/api/text/nginx/AS4837 https://asn.ipinfo.app/api/text/nginx/AS4134 https://asn.ipinfo.app/api/text/nginx/AS203020 https://asn.ipinfo.app/api/text/nginx/AS9009 https://asn.ipinfo.app/api/text/nginx/AS56041 https://asn.ipinfo.app/api/text/nginx/AS9808
</span></span><span style="display:flex;"><span>$ cat AS* | sed -e <span style="color:#e6db74">&#39;/^$/d&#39;</span> -e <span style="color:#e6db74">&#39;/^#/d&#39;</span> -e <span style="color:#e6db74">&#39;/^{/d&#39;</span> -e <span style="color:#e6db74">&#39;s/deny //&#39;</span> -e <span style="color:#e6db74">&#39;s/;//&#39;</span> | sort | uniq | wc -l
</span></span><span style="display:flex;"><span>20296
</span></span></code></pre></div><ul>
<li>I extracted the IPv4 and IPv6 networks:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ cat AS* | sed -e <span style="color:#e6db74">&#39;/^$/d&#39;</span> -e <span style="color:#e6db74">&#39;/^#/d&#39;</span> -e <span style="color:#e6db74">&#39;/^{/d&#39;</span> -e <span style="color:#e6db74">&#39;s/deny //&#39;</span> -e <span style="color:#e6db74">&#39;s/;//&#39;</span> | grep <span style="color:#e6db74">&#34;:&#34;</span> | sort &gt; /tmp/ipv6-networks.txt
</span></span><span style="display:flex;"><span>$ cat AS* | sed -e <span style="color:#e6db74">&#39;/^$/d&#39;</span> -e <span style="color:#e6db74">&#39;/^#/d&#39;</span> -e <span style="color:#e6db74">&#39;/^{/d&#39;</span> -e <span style="color:#e6db74">&#39;s/deny //&#39;</span> -e <span style="color:#e6db74">&#39;s/;//&#39;</span> | grep -v <span style="color:#e6db74">&#34;:&#34;</span> | sort &gt; /tmp/ipv4-networks.txt
</span></span></code></pre></div><ul>
<li>I suspect we need to aggregate these networks since they are so many and nftables doesn&rsquo;t like it when they overlap:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ wc -l /tmp/ipv4-networks.txt
</span></span><span style="display:flex;"><span>15464 /tmp/ipv4-networks.txt
</span></span><span style="display:flex;"><span>$ aggregate6 /tmp/ipv4-networks.txt | wc -l
</span></span><span style="display:flex;"><span>2781
</span></span><span style="display:flex;"><span>$ wc -l /tmp/ipv6-networks.txt
</span></span><span style="display:flex;"><span>4833 /tmp/ipv6-networks.txt
</span></span><span style="display:flex;"><span>$ aggregate6 /tmp/ipv6-networks.txt | wc -l
</span></span><span style="display:flex;"><span>338
</span></span></code></pre></div><ul>
<li>I deployed these lists on CGSpace, ran all updates, and rebooted the server
<ul>
<li>This list is SURELY too broad because we will block legitimate users in China&hellip; but right now how can I discern?</li>
<li>Also, I need to purge the hits from these 14,000 IPs in Solr when I get time</li>
</ul>
</li>
<li>Looking back at the Munin graphs a few hours later I see this was indeed some kind of spike that was out of the ordinary:</li>
</ul>
<p><img src="/cgspace-notes/2022/04/postgres_connections_ALL-day.png" alt="PostgreSQL connections day">
<img src="/cgspace-notes/2022/04/jmx_dspace_sessions-day.png" alt="DSpace sessions day"></p>
<ul>
<li>I used <code>grepcidr</code> with the aggregated network lists to extract IPs matching those networks from the nginx logs for the past day:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span># cat /var/log/nginx/access.log /var/log/nginx/access.log.1 | awk <span style="color:#e6db74">&#39;{print $1}&#39;</span> | sort -u &gt; /tmp/ips.log
</span></span><span style="display:flex;"><span># <span style="color:#66d9ef">while</span> read -r network; <span style="color:#66d9ef">do</span> grepcidr $network /tmp/ips.log &gt;&gt; /tmp/ipv4-ips.txt; <span style="color:#66d9ef">done</span> &lt; /tmp/ipv4-networks-aggregated.txt
</span></span><span style="display:flex;"><span># <span style="color:#66d9ef">while</span> read -r network; <span style="color:#66d9ef">do</span> grepcidr $network /tmp/ips.log &gt;&gt; /tmp/ipv6-ips.txt; <span style="color:#66d9ef">done</span> &lt; /tmp/ipv6-networks-aggregated.txt
</span></span><span style="display:flex;"><span># wc -l /tmp/ipv4-ips.txt
</span></span><span style="display:flex;"><span>15313 /tmp/ipv4-ips.txt
</span></span><span style="display:flex;"><span># wc -l /tmp/ipv6-ips.txt
</span></span><span style="display:flex;"><span>19 /tmp/ipv6-ips.txt
</span></span></code></pre></div><ul>
<li>Then I purged them from Solr using the <code>check-spider-ip-hits.sh</code>:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ ./ilri/check-spider-ip-hits.sh -f /tmp/ipv4-ips.txt -p
</span></span></code></pre></div><h2 id="2022-04-23">2022-04-23</h2>
<ul>
<li>A handful of spider user agents that I identified were merged into COUNTER-Robots so I updated the ILRI override in our DSpace and regenerated the <code>example</code> file that contains most patterns
<ul>
<li>I updated CGSpace, then ran all system updates and rebooted the host</li>
<li>I also ran <code>dspace cleanup -v</code> to prune the database</li>
</ul>
</li>
</ul>
<h2 id="2022-04-24">2022-04-24</h2>
<ul>
<li>Start a harvest on AReS</li>
</ul>
<h2 id="2022-04-25">2022-04-25</h2>
<ul>
<li>Looking at the countries on AReS I decided to collect a list to remind Jacquie at WorldFish again about how many incorrect ones they have
<ul>
<li>There are about sixty incorrect ones, some of which I can correct via the value mappings on AReS, but most I can&rsquo;t</li>
<li>I set up value mappings for seventeen countries, then sent another sixty or so to Jacquie and Salem to hopefully delete</li>
</ul>
</li>
<li>I notice we have over 1,000 items with region <code>Africa South of Sahara</code>
<ul>
<li>I am surprised to see these because we did a mass migration to <code>Sub-Saharan Africa</code> in 2020-10 when we aligned to UN M.49</li>
<li>Oh! It seems I used a capital O in <code>Of</code>!</li>
<li>This is curious, I see we missed <code>East Asia</code> and <code>Northern America</code>, because those are still in our list, but UN M.49 uses <code>Eastern Asia</code> and <code>Northern America</code>&hellip; I will have to raise that with Peter and Abenet later</li>
<li>For now I will just re-run my fixes:</li>
</ul>
</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>$ cat /tmp/regions.csv
</span></span><span style="display:flex;"><span>cg.coverage.region,correct
</span></span><span style="display:flex;"><span>East Africa,Eastern Africa
</span></span><span style="display:flex;"><span>West Africa,Western Africa
</span></span><span style="display:flex;"><span>Southeast Asia,South-eastern Asia
</span></span><span style="display:flex;"><span>South Asia,Southern Asia
</span></span><span style="display:flex;"><span>Africa South of Sahara,Sub-Saharan Africa
</span></span><span style="display:flex;"><span>North Africa,Northern Africa
</span></span><span style="display:flex;"><span>West Asia,Western Asia
</span></span><span style="display:flex;"><span>$ ./ilri/fix-metadata-values.py -i /tmp/regions.csv -db dspace -u dspace -p <span style="color:#e6db74">&#39;fuuu&#39;</span> -f cg.coverage.region -m <span style="color:#ae81ff">227</span> -t correct
</span></span></code></pre></div><ul>
<li>Then I started a new harvest on AReS</li>
</ul>
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