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Add notes for 2018-07-12

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Alan Orth 2018-07-12 08:35:39 +03:00
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content/posts/2018-07.md
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@ -257,4 +257,62 @@ $ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=95.108.181.88' dspace.log.2018-07-
- Peter told Sisay to test this controlled vocabulary
- Discuss meeting in Nairobi in October
## 2018-07-12
- Uptime Robot said that CGSpace went down a few times last night, around 10:45 PM and 12:30 AM
- Here are the top ten IPs from last night and this morning:
```
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "11/Jul/2018:22" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
48 66.249.64.91
50 35.227.26.162
57 157.55.39.234
59 157.55.39.71
62 147.99.27.190
82 95.108.181.88
92 40.77.167.90
97 183.128.40.185
97 240e:f0:44:fa53:745a:8afe:d221:1232
3634 208.110.72.10
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "12/Jul/2018:00" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
25 216.244.66.198
38 40.77.167.185
46 66.249.64.93
56 157.55.39.71
60 35.227.26.162
65 157.55.39.234
83 95.108.181.88
87 66.249.64.91
96 40.77.167.90
7075 208.110.72.10
```
- We have never seen `208.110.72.10` before... so that's interesting!
- The user agent for these requests is: Pcore-HTTP/v0.44.0
- A brief Google search doesn't turn up any information about what this bot is, but lots of users complaining about it
- This bot does make a lot of requests all through the day, although it seems to re-use its Tomcat session:
```
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "Pcore-HTTP" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
17098 208.110.72.10
# grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=208.110.72.10' dspace.log.2018-07-11
1161
# grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=208.110.72.10' dspace.log.2018-07-12
1885
```
- I think the problem is that, despite the bot requesting `robots.txt`, it almost exlusively requests dynamic pages from `/discover`:
```
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "Pcore-HTTP" | grep -o -E "GET /(browse|discover|search-filter)" | sort -n | uniq -c | sort -rn
13364 GET /discover
993 GET /search-filter
804 GET /browse
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "Pcore-HTTP" | grep robots
208.110.72.10 - - [12/Jul/2018:00:22:28 +0000] "GET /robots.txt HTTP/1.1" 200 1301 "https://cgspace.cgiar.org/robots.txt" "Pcore-HTTP/v0.44.0
```
- So this bot is just like Baiduspider, and I need to add it to the nginx rate limiting
- I'll also add it to Tomcat's Crawler Session Manager Valve to force the re-use of a common Tomcat sesssion for all crawlers just in case
<!-- vim: set sw=2 ts=2: -->

69
docs/2018-07/index.html
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@ -30,7 +30,7 @@ There is insufficient memory for the Java Runtime Environment to continue.
<meta property="article:published_time" content="2018-07-01T12:56:54&#43;03:00"/>
<meta property="article:modified_time" content="2018-07-10T17:34:30&#43;03:00"/>
<meta property="article:modified_time" content="2018-07-11T16:55:30&#43;03:00"/>
@ -71,9 +71,9 @@ There is insufficient memory for the Java Runtime Environment to continue.
"@type": "BlogPosting",
"headline": "July, 2018",
"url": "https://alanorth.github.io/cgspace-notes/2018-07/",
"wordCount": "1740",
"wordCount": "2079",
"datePublished": "2018-07-01T12:56:54&#43;03:00",
"dateModified": "2018-07-10T17:34:30&#43;03:00",
"dateModified": "2018-07-11T16:55:30&#43;03:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -432,6 +432,69 @@ org.apache.solr.client.solrj.SolrServerException: IOException occured when talki
</ul></li>
</ul>
<h2 id="2018-07-12">2018-07-12</h2>
<ul>
<li>Uptime Robot said that CGSpace went down a few times last night, around 10:45 PM and 12:30 AM</li>
<li>Here are the top ten IPs from last night and this morning:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;11/Jul/2018:22&quot; | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
48 66.249.64.91
50 35.227.26.162
57 157.55.39.234
59 157.55.39.71
62 147.99.27.190
82 95.108.181.88
92 40.77.167.90
97 183.128.40.185
97 240e:f0:44:fa53:745a:8afe:d221:1232
3634 208.110.72.10
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;12/Jul/2018:00&quot; | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
25 216.244.66.198
38 40.77.167.185
46 66.249.64.93
56 157.55.39.71
60 35.227.26.162
65 157.55.39.234
83 95.108.181.88
87 66.249.64.91
96 40.77.167.90
7075 208.110.72.10
</code></pre>
<ul>
<li>We have never seen <code>208.110.72.10</code> before&hellip; so that&rsquo;s interesting!</li>
<li>The user agent for these requests is: Pcore-HTTP/v0.44.0</li>
<li>A brief Google search doesn&rsquo;t turn up any information about what this bot is, but lots of users complaining about it</li>
<li>This bot does make a lot of requests all through the day, although it seems to re-use its Tomcat session:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;Pcore-HTTP&quot; | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
17098 208.110.72.10
# grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=208.110.72.10' dspace.log.2018-07-11
1161
# grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=208.110.72.10' dspace.log.2018-07-12
1885
</code></pre>
<ul>
<li>I think the problem is that, despite the bot requesting <code>robots.txt</code>, it almost exlusively requests dynamic pages from <code>/discover</code>:</li>
</ul>
<pre><code># zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;Pcore-HTTP&quot; | grep -o -E &quot;GET /(browse|discover|search-filter)&quot; | sort -n | uniq -c | sort -rn
13364 GET /discover
993 GET /search-filter
804 GET /browse
# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E &quot;Pcore-HTTP&quot; | grep robots
208.110.72.10 - - [12/Jul/2018:00:22:28 +0000] &quot;GET /robots.txt HTTP/1.1&quot; 200 1301 &quot;https://cgspace.cgiar.org/robots.txt&quot; &quot;Pcore-HTTP/v0.44.0
</code></pre>
<ul>
<li>So this bot is just like Baiduspider, and I need to add it to the nginx rate limiting</li>
<li>I&rsquo;ll also add it to Tomcat&rsquo;s Crawler Session Manager Valve to force the re-use of a common Tomcat sesssion for all crawlers just in case</li>
</ul>
<!-- vim: set sw=2 ts=2: -->

10
docs/sitemap.xml
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@ -4,7 +4,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/2018-07/</loc>
<lastmod>2018-07-10T17:34:30+03:00</lastmod>
<lastmod>2018-07-11T16:55:30+03:00</lastmod>
</url>
<url>
@ -174,7 +174,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2018-07-10T17:34:30+03:00</lastmod>
<lastmod>2018-07-11T16:55:30+03:00</lastmod>
<priority>0</priority>
</url>
@ -185,7 +185,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
<lastmod>2018-07-10T17:34:30+03:00</lastmod>
<lastmod>2018-07-11T16:55:30+03:00</lastmod>
<priority>0</priority>
</url>
@ -197,13 +197,13 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
<lastmod>2018-07-10T17:34:30+03:00</lastmod>
<lastmod>2018-07-11T16:55:30+03:00</lastmod>
<priority>0</priority>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
<lastmod>2018-07-10T17:34:30+03:00</lastmod>
<lastmod>2018-07-11T16:55:30+03:00</lastmod>
<priority>0</priority>
</url>