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Add notes for 2020-03-10

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Alan Orth 2020-03-10 16:18:20 +02:00
parent 64125c32bf
commit 690b955e82
Signed by: alanorth
GPG Key ID: 0FB860CC9C45B1B9
3 changed files with 235 additions and 8 deletions
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117
content/posts/2020-03.md
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@ -86,4 +86,121 @@ $ ./run.sh -s http://localhost:8081/solr/statistics-2014 -a export -o /tmp/stati
# dpkg -l | grep postgresql | grep 9.6 | awk '{print $2}' | xargs dpkg -r
```
## 2020-03-09
- Peter noticed that the Solr stats were not showing anything before 2020
- I had to restart Tomcat three times before all cores loaded properly...
## 2020-03-10
- Fix some logic issues in the nginx config
- Use generic blocking of `[Bb]ot` and `[Cc]rawl` and `[Ss]pider` in the "badbots" rate limiting logic instead of trying to list them all one by one (bots should not be trying to index dynamic pages *no matter what* so we punish hard here)
- We were not properly forwarding the remote IP address to Tomcat in all nginx location blocks, which led some locations to log a hit from 127.0.0.1 (because we need to explicitly add the global proxy params when setting other headers in location blocks)
- Unfortunately this affected the REST API and there are a few hundred thousand requests from this user agent:
```
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729)
```
- It seems to only be a problem in the last week:
```
# zgrep -c 64.225.40.66 /var/log/nginx/rest.log.{1..9}
/var/log/nginx/rest.log.1:0
/var/log/nginx/rest.log.2:0
/var/log/nginx/rest.log.3:0
/var/log/nginx/rest.log.4:3625
/var/log/nginx/rest.log.5:27458
/var/log/nginx/rest.log.6:0
/var/log/nginx/rest.log.7:0
/var/log/nginx/rest.log.8:0
/var/log/nginx/rest.log.9:0
```
- In Solr the IP is 127.0.0.1, but in the nginx logs I can luckily see the real IP (64.225.40.66), which is on Digital Ocean
- I will purge them from Solr statistics:
```
$ curl -s "http://localhost:8081/solr/statistics/update?softCommit=true" -H "Content-Type: text/xml" --data-binary '<delete><query>userAgent:"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729)"</query></delete>'
```
- Another user agent that seems to be a bot is:
```
Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)
```
- In Solr the IP is 127.0.0.1 because of the misconfiguration, but in nginx's logs I see it belongs to three IPs on Online.net in France:
```
# zcat /var/log/nginx/access.log.*.gz /var/log/nginx/rest.log.*.gz | grep 'Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)' | awk '{print $1}' | sort | uniq -c
63090 163.172.68.99
183428 163.172.70.248
147608 163.172.71.24
```
- It is making 10,000 to 40,000 requests to XMLUI per day...
```
# zgrep -c 'Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)' /var/log/nginx/access.log.{1..9}
/var/log/nginx/access.log.30.gz:18687
/var/log/nginx/access.log.31.gz:28936
/var/log/nginx/access.log.32.gz:36402
/var/log/nginx/access.log.33.gz:38886
/var/log/nginx/access.log.34.gz:30607
/var/log/nginx/access.log.35.gz:19040
/var/log/nginx/access.log.36.gz:10780
/var/log/nginx/access.log.37.gz:5808
/var/log/nginx/access.log.38.gz:3100
/var/log/nginx/access.log.39.gz:1485
/var/log/nginx/access.log.3.gz:2898
/var/log/nginx/access.log.40.gz:373
/var/log/nginx/access.log.41.gz:3909
/var/log/nginx/access.log.42.gz:4729
/var/log/nginx/access.log.43.gz:3906
```
- I will purge those hits too!
```
$ curl -s "http://localhost:8081/solr/statistics/update?softCommit=true" -H "Content-Type: text/xml" --data-binary '<delete><query>userAgent:"Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)"</query></delete>'
```
- Shit, and something happened and a few thousand hits from user agents with "Bot" in their user agent got through
- I need to re-run the `check-bot-hits.sh` script with the standard COUNTER-Robots list again, but add my own versions of a few because the script/Solr doesn't support case-insensitive regular expressions:
```
$ ./check-spider-hits.sh -f /tmp/bots -d -p
(DEBUG) Using spiders pattern file: /tmp/bots
(DEBUG) Checking for hits from spider: Citoid
Purging 11 hits from Citoid in statistics
(DEBUG) Checking for hits from spider: ecointernet
Purging 375 hits from ecointernet in statistics
(DEBUG) Checking for hits from spider: ^Pattern\/[0-9]
Purging 1 hits from ^Pattern\/[0-9] in statistics
(DEBUG) Checking for hits from spider: sqlmap
(DEBUG) Checking for hits from spider: Typhoeus
Purging 6 hits from Typhoeus in statistics
(DEBUG) Checking for hits from spider: 7siters
(DEBUG) Checking for hits from spider: Apache-HttpClient
Purging 3178 hits from Apache-HttpClient in statistics
Total number of bot hits purged: 3571
$ ./check-spider-hits.sh -f /tmp/bots -d -p
(DEBUG) Using spiders pattern file: /tmp/bots
(DEBUG) Checking for hits from spider: [Bb]ot
Purging 8317 hits from [Bb]ot in statistics
(DEBUG) Checking for hits from spider: [Cc]rawl
Purging 1314 hits from [Cc]rawl in statistics
(DEBUG) Checking for hits from spider: [Ss]pider
Purging 62 hits from [Ss]pider in statistics
(DEBUG) Checking for hits from spider: Citoid
(DEBUG) Checking for hits from spider: ecointernet
(DEBUG) Checking for hits from spider: ^Pattern\/[0-9]
(DEBUG) Checking for hits from spider: sqlmap
(DEBUG) Checking for hits from spider: Typhoeus
(DEBUG) Checking for hits from spider: 7siters
(DEBUG) Checking for hits from spider: Apache-HttpClient
```
<!-- vim: set sw=2 ts=2: -->

116
docs/2020-03/index.html
View File

@ -22,7 +22,7 @@ You need to download this into the DSpace 6.x source and compile it
<meta property="og:type" content="article" />
<meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2020-03/" />
<meta property="article:published_time" content="2020-03-02T12:31:30+02:00" />
<meta property="article:modified_time" content="2020-03-08T14:28:39+02:00" />
<meta property="article:modified_time" content="2020-03-08T15:53:34+02:00" />
<meta name="twitter:card" content="summary"/>
<meta name="twitter:title" content="March, 2020"/>
@ -49,9 +49,9 @@ You need to download this into the DSpace 6.x source and compile it
"@type": "BlogPosting",
"headline": "March, 2020",
"url": "https:\/\/alanorth.github.io\/cgspace-notes\/2020-03\/",
"wordCount": "480",
"wordCount": "1102",
"datePublished": "2020-03-02T12:31:30+02:00",
"dateModified": "2020-03-08T14:28:39+02:00",
"dateModified": "2020-03-08T15:53:34+02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -211,6 +211,116 @@ $ curl -s &quot;http://localhost:8081/solr/statistics-2012/update?softCommit=tru
# pg_upgradecluster 9.6 main
# pg_dropcluster 9.6 main
# dpkg -l | grep postgresql | grep 9.6 | awk '{print $2}' | xargs dpkg -r
</code></pre><h2 id="2020-03-09">2020-03-09</h2>
<ul>
<li>Peter noticed that the Solr stats were not showing anything before 2020
<ul>
<li>I had to restart Tomcat three times before all cores loaded properly&hellip;</li>
</ul>
</li>
</ul>
<h2 id="2020-03-10">2020-03-10</h2>
<ul>
<li>Fix some logic issues in the nginx config
<ul>
<li>Use generic blocking of <code>[Bb]ot</code> and <code>[Cc]rawl</code> and <code>[Ss]pider</code> in the &ldquo;badbots&rdquo; rate limiting logic instead of trying to list them all one by one (bots should not be trying to index dynamic pages <em>no matter what</em> so we punish hard here)</li>
<li>We were not properly forwarding the remote IP address to Tomcat in all nginx location blocks, which led some locations to log a hit from 127.0.0.1 (because we need to explicitly add the global proxy params when setting other headers in location blocks)</li>
<li>Unfortunately this affected the REST API and there are a few hundred thousand requests from this user agent:</li>
</ul>
</li>
</ul>
<pre><code>Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729)
</code></pre><ul>
<li>It seems to only be a problem in the last week:</li>
</ul>
<pre><code># zgrep -c 64.225.40.66 /var/log/nginx/rest.log.{1..9}
/var/log/nginx/rest.log.1:0
/var/log/nginx/rest.log.2:0
/var/log/nginx/rest.log.3:0
/var/log/nginx/rest.log.4:3625
/var/log/nginx/rest.log.5:27458
/var/log/nginx/rest.log.6:0
/var/log/nginx/rest.log.7:0
/var/log/nginx/rest.log.8:0
/var/log/nginx/rest.log.9:0
</code></pre><ul>
<li>In Solr the IP is 127.0.0.1, but in the nginx logs I can luckily see the real IP (64.225.40.66), which is on Digital Ocean</li>
<li>I will purge them from Solr statistics:</li>
</ul>
<pre><code>$ curl -s &quot;http://localhost:8081/solr/statistics/update?softCommit=true&quot; -H &quot;Content-Type: text/xml&quot; --data-binary '&lt;delete&gt;&lt;query&gt;userAgent:&quot;Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729)&quot;&lt;/query&gt;&lt;/delete&gt;'
</code></pre><ul>
<li>Another user agent that seems to be a bot is:</li>
</ul>
<pre><code>Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)
</code></pre><ul>
<li>In Solr the IP is 127.0.0.1 because of the misconfiguration, but in nginx&rsquo;s logs I see it belongs to three IPs on Online.net in France:</li>
</ul>
<pre><code># zcat /var/log/nginx/access.log.*.gz /var/log/nginx/rest.log.*.gz | grep 'Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)' | awk '{print $1}' | sort | uniq -c
63090 163.172.68.99
183428 163.172.70.248
147608 163.172.71.24
</code></pre><ul>
<li>It is making 10,000 to 40,000 requests to XMLUI per day&hellip;</li>
</ul>
<pre><code># zgrep -c 'Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)' /var/log/nginx/access.log.{1..9}
/var/log/nginx/access.log.30.gz:18687
/var/log/nginx/access.log.31.gz:28936
/var/log/nginx/access.log.32.gz:36402
/var/log/nginx/access.log.33.gz:38886
/var/log/nginx/access.log.34.gz:30607
/var/log/nginx/access.log.35.gz:19040
/var/log/nginx/access.log.36.gz:10780
/var/log/nginx/access.log.37.gz:5808
/var/log/nginx/access.log.38.gz:3100
/var/log/nginx/access.log.39.gz:1485
/var/log/nginx/access.log.3.gz:2898
/var/log/nginx/access.log.40.gz:373
/var/log/nginx/access.log.41.gz:3909
/var/log/nginx/access.log.42.gz:4729
/var/log/nginx/access.log.43.gz:3906
</code></pre><ul>
<li>I will purge those hits too!</li>
</ul>
<pre><code>$ curl -s &quot;http://localhost:8081/solr/statistics/update?softCommit=true&quot; -H &quot;Content-Type: text/xml&quot; --data-binary '&lt;delete&gt;&lt;query&gt;userAgent:&quot;Mozilla/5.0 ((Windows; U; Windows NT 6.1; fr; rv:1.9.2) Gecko/20100115 Firefox/3.6)&quot;&lt;/query&gt;&lt;/delete&gt;'
</code></pre><ul>
<li>Shit, and something happened and a few thousand hits from user agents with &ldquo;Bot&rdquo; in their user agent got through
<ul>
<li>I need to re-run the <code>check-bot-hits.sh</code> script with the standard COUNTER-Robots list again, but add my own versions of a few because the script/Solr doesn&rsquo;t support case-insensitive regular expressions:</li>
</ul>
</li>
</ul>
<pre><code>$ ./check-spider-hits.sh -f /tmp/bots -d -p
(DEBUG) Using spiders pattern file: /tmp/bots
(DEBUG) Checking for hits from spider: Citoid
Purging 11 hits from Citoid in statistics
(DEBUG) Checking for hits from spider: ecointernet
Purging 375 hits from ecointernet in statistics
(DEBUG) Checking for hits from spider: ^Pattern\/[0-9]
Purging 1 hits from ^Pattern\/[0-9] in statistics
(DEBUG) Checking for hits from spider: sqlmap
(DEBUG) Checking for hits from spider: Typhoeus
Purging 6 hits from Typhoeus in statistics
(DEBUG) Checking for hits from spider: 7siters
(DEBUG) Checking for hits from spider: Apache-HttpClient
Purging 3178 hits from Apache-HttpClient in statistics
Total number of bot hits purged: 3571
$ ./check-spider-hits.sh -f /tmp/bots -d -p
(DEBUG) Using spiders pattern file: /tmp/bots
(DEBUG) Checking for hits from spider: [Bb]ot
Purging 8317 hits from [Bb]ot in statistics
(DEBUG) Checking for hits from spider: [Cc]rawl
Purging 1314 hits from [Cc]rawl in statistics
(DEBUG) Checking for hits from spider: [Ss]pider
Purging 62 hits from [Ss]pider in statistics
(DEBUG) Checking for hits from spider: Citoid
(DEBUG) Checking for hits from spider: ecointernet
(DEBUG) Checking for hits from spider: ^Pattern\/[0-9]
(DEBUG) Checking for hits from spider: sqlmap
(DEBUG) Checking for hits from spider: Typhoeus
(DEBUG) Checking for hits from spider: 7siters
(DEBUG) Checking for hits from spider: Apache-HttpClient
</code></pre><!-- raw HTML omitted -->

10
docs/sitemap.xml
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@ -4,27 +4,27 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/categories/</loc>
<lastmod>2020-03-08T14:28:39+02:00</lastmod>
<lastmod>2020-03-08T15:53:34+02:00</lastmod>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2020-03-08T14:28:39+02:00</lastmod>
<lastmod>2020-03-08T15:53:34+02:00</lastmod>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/2020-03/</loc>
<lastmod>2020-03-08T14:28:39+02:00</lastmod>
<lastmod>2020-03-08T15:53:34+02:00</lastmod>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/categories/notes/</loc>
<lastmod>2020-03-08T14:28:39+02:00</lastmod>
<lastmod>2020-03-08T15:53:34+02:00</lastmod>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
<lastmod>2020-03-08T14:28:39+02:00</lastmod>
<lastmod>2020-03-08T15:53:34+02:00</lastmod>
</url>
<url>