2018-11-01 15:43:37 +01:00
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Finalize AReS Phase I and Phase II ToRs
Send a note about my dspace-statistics-api to the dspace-tech mailing list
2018-11-03 17:13:49 +01:00
2018-11-03
Linode has been sending mails a few times a day recently that CGSpace (linode18) has had high CPU usage
Today these are the top 10 IPs:
2018-11-01 15:43:37 +01:00
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Finalize AReS Phase I and Phase II ToRs
Send a note about my dspace-statistics-api to the dspace-tech mailing list
2018-11-03 17:13:49 +01:00
2018-11-03
Linode has been sending mails a few times a day recently that CGSpace (linode18) has had high CPU usage
Today these are the top 10 IPs:
2018-11-01 15:43:37 +01:00
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2018-11-01 15:43:37 +01:00
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< h1 class = "blog-title" > < a href = "https://alanorth.github.io/cgspace-notes/" rel = "home" > CGSpace Notes< / a > < / h1 >
< 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/2018-11/" > November, 2018< / a > < / h2 >
< p class = "blog-post-meta" > < time datetime = "2018-11-01T16:41:30+02:00" > Thu Nov 01, 2018< / time > by Alan Orth in
< i class = "fa fa-tag" aria-hidden = "true" > < / i > < a href = "/cgspace-notes/tags/notes" rel = "tag" > Notes< / a >
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< h2 id = "2018-11-01" > 2018-11-01< / h2 >
< ul >
< li > Finalize AReS Phase I and Phase II ToRs< / li >
< li > Send a note about my < a href = "https://github.com/ilri/dspace-statistics-api" > dspace-statistics-api< / a > to the dspace-tech mailing list< / li >
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2018-11-03 17:13:49 +01:00
< h2 id = "2018-11-03" > 2018-11-03< / h2 >
< ul >
< li > Linode has been sending mails a few times a day recently that CGSpace (linode18) has had high CPU usage< / li >
< li > Today these are the top 10 IPs:< / li >
< / ul >
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< p > < / p >
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< pre > < code > # zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E " 03/Nov/2018" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
1300 66.249.64.63
1384 35.237.175.180
1430 138.201.52.218
1455 207.46.13.156
1500 40.77.167.175
1979 50.116.102.77
2790 66.249.64.61
3367 84.38.130.177
4537 70.32.83.92
22508 66.249.64.59
< / code > < / pre >
< ul >
< li > The < code > 66.249.64.x< / code > are definitely Google< / li >
< li > < code > 70.32.83.92< / code > is well known, probably CCAFS or something, as it’ s only a few thousand requests and always to REST API< / li >
< li > < code > 84.38.130.177< / code > is some new IP in Latvia that is only hitting the XMLUI, using the following user agent:< / li >
< / ul >
< pre > < code > Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.792.0 Safari/535.1
< / code > < / pre >
< ul >
< li > They at least seem to be re-using their Tomcat sessions:< / li >
< / ul >
< pre > < code > $ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=84.38.130.177' dspace.log.2018-11-03 | sort | uniq
342
< / code > < / pre >
< ul >
< li > < code > 50.116.102.77< / code > is also a regular REST API user< / li >
< li > < code > 40.77.167.175< / code > and < code > 207.46.13.156< / code > seem to be Bing< / li >
< li > < code > 138.201.52.218< / code > seems to be on Hetzner in Germany, but is using this user agent:< / li >
< / ul >
< pre > < code > Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:62.0) Gecko/20100101 Firefox/62.0
< / code > < / pre >
< ul >
< li > And it doesn’ t seem they are re-using their Tomcat sessions:< / li >
< / ul >
< pre > < code > $ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=138.201.52.218' dspace.log.2018-11-03 | sort | uniq
1243
< / code > < / pre >
< ul >
< li > Ah, we’ ve apparently seen this server exactly a year ago in 2017-11, making 40,000 requests in one day… < / li >
< li > I wonder if it’ s worth adding them to the list of bots in the nginx config?< / li >
2018-11-04 00:02:29 +01:00
< li > Linode sent a mail that CGSpace (linode18) is using high outgoing bandwidth< / li >
< li > Looking at the nginx logs again I see the following top ten IPs:< / 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/Nov/2018" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
1979 50.116.102.77
1980 35.237.175.180
2186 207.46.13.156
2208 40.77.167.175
2843 66.249.64.63
4220 84.38.130.177
4537 70.32.83.92
5593 66.249.64.61
12557 78.46.89.18
32152 66.249.64.59
< / code > < / pre >
< ul >
< li > < code > 78.46.89.18< / code > is new since I last checked a few hours ago, and it’ s from Hetzner with the following user agent:< / li >
< / ul >
< pre > < code > Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:62.0) Gecko/20100101 Firefox/62.0
< / code > < / pre >
< ul >
< li > It’ s making lots of requests and using quite a number of Tomcat sessions:< / li >
< / ul >
< pre > < code > $ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=78.46.89.18' /home/cgspace.cgiar.org/log/dspace.log.2018-11-03 | sort | uniq
8449
< / code > < / pre >
< ul >
< li > I could add this IP to the list of bot IPs in nginx, but it seems like a futile effort when some new IP could come along and do the same thing< / li >
< li > Perhaps I should think about adding rate limits to dynamic pages like < code > /discover< / code > and < code > /browse< / code > < / li >
< li > I think it’ s reasonable for a human to click one of those links five or ten times a minute… < / li >
< li > To contrast, < code > 78.46.89.18< / code > made about 300 requests per minute for a few hours today:< / li >
< / ul >
< pre > < code > # grep 78.46.89.18 /var/log/nginx/access.log | grep -o -E '03/Nov/2018:[0-9][0-9]:[0-9][0-9]' | sort | uniq -c | sort -n | tail -n 20
286 03/Nov/2018:18:02
287 03/Nov/2018:18:21
289 03/Nov/2018:18:23
291 03/Nov/2018:18:27
293 03/Nov/2018:18:34
300 03/Nov/2018:17:58
300 03/Nov/2018:18:22
300 03/Nov/2018:18:32
304 03/Nov/2018:18:12
305 03/Nov/2018:18:13
305 03/Nov/2018:18:24
312 03/Nov/2018:18:39
322 03/Nov/2018:18:17
326 03/Nov/2018:18:38
327 03/Nov/2018:18:16
330 03/Nov/2018:17:57
332 03/Nov/2018:18:19
336 03/Nov/2018:17:56
340 03/Nov/2018:18:14
341 03/Nov/2018:18:18
< / code > < / pre >
< ul >
< li > If they want to download all our metadata and PDFs they should use an API rather than scraping the XMLUI< / li >
< li > I will add them to the list of bot IPs in nginx for now and think about enforcing rate limits in XMLUI later< / li >
< li > Also, this is the third (?) time a mysterious IP in Hetzner has done this… who is this?< / li >
< / ul >
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< h4 > Recent Posts< / h4 >
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< li > < a href = "/cgspace-notes/2018-11/" > November, 2018< / a > < / li >
< li > < a href = "/cgspace-notes/2018-10/" > October, 2018< / a > < / li >
< li > < a href = "/cgspace-notes/2018-09/" > September, 2018< / a > < / li >
< li > < a href = "/cgspace-notes/2018-08/" > August, 2018< / a > < / li >
< li > < a href = "/cgspace-notes/2018-07/" > July, 2018< / a > < / li >
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< h4 > Links< / h4 >
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< li > < a href = "https://cgspace.cgiar.org" > CGSpace< / a > < / li >
< li > < a href = "https://dspacetest.cgiar.org" > DSpace Test< / a > < / li >
< li > < a href = "https://github.com/ilri/DSpace" > CGSpace @ GitHub< / a > < / li >
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