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Update notes for 2017-12-18
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@ -325,3 +325,48 @@ Elapsed time: 2 secs (2559 msecs)
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- I need to keep an eye on this issue because it has nice fixes for reducing the number of database connections in DSpace 5.7: https://jira.duraspace.org/browse/DS-3551
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- Update text on CGSpace about page to give some tips to developers about using the resources more wisely ([#352](https://github.com/ilri/DSpace/pull/352))
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- Linode alerted that CGSpace was using 396.3% CPU from 12 to 2 PM
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- The REST and OAI API logs look pretty much the same as earlier this morning, but there's a new IP harvesting XMLUI:
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```
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# cat /var/log/nginx/access.log /var/log/nginx/access.log.1 /var/log/nginx/library-access.log /var/log/nginx/library-access.log.1 | grep -E "18/Dec/2017" | awk '{print $1}' | sort -n | uniq -c | sort -h | tail
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360 95.108.181.88
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477 66.249.66.90
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526 86.101.203.216
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691 207.46.13.13
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698 197.210.168.174
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819 207.46.13.146
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878 68.180.229.254
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1965 104.196.152.243
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17701 2.86.72.181
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52532 137.108.70.7
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```
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- 2.86.72.181 appears to be from Greece, and has the following user agent:
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```
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Mozilla/3.0 (compatible; Indy Library)
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```
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- Surprisingly it seems they are re-using their Tomcat session for all those 17,000 requests:
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```
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$ grep 2.86.72.181 dspace.log.2017-12-18 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
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1
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```
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- I guess there's nothing I can do to them for now
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- In other news, I am curious how many PostgreSQL connection pool errors we've had in the last month:
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```
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$ grep -c "Cannot get a connection, pool error Timeout waiting for idle object" dspace.log.2017-1* | grep -v :0
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dspace.log.2017-11-07:15695
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dspace.log.2017-11-08:135
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dspace.log.2017-11-17:1298
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dspace.log.2017-11-26:4160
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dspace.log.2017-11-28:107
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dspace.log.2017-11-29:3972
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dspace.log.2017-12-01:1601
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dspace.log.2017-12-02:1274
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dspace.log.2017-12-07:2769
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```
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@ -23,7 +23,7 @@ The list of connections to XMLUI and REST API for today:
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<meta property="article:published_time" content="2017-12-01T13:53:54+03:00"/>
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<meta property="article:modified_time" content="2017-12-18T14:02:24+02:00"/>
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<meta property="article:modified_time" content="2017-12-18T15:20:37+02:00"/>
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@ -56,9 +56,9 @@ The list of connections to XMLUI and REST API for today:
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"@type": "BlogPosting",
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"headline": "December, 2017",
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"url": "https://alanorth.github.io/cgspace-notes/2017-12/",
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"wordCount": "1787",
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"wordCount": "1972",
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"datePublished": "2017-12-01T13:53:54+03:00",
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"dateModified": "2017-12-18T14:02:24+02:00",
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"dateModified": "2017-12-18T15:20:37+02:00",
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"author": {
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"@type": "Person",
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"name": "Alan Orth"
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@ -483,8 +483,55 @@ Elapsed time: 2 secs (2559 msecs)
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<ul>
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<li>I need to keep an eye on this issue because it has nice fixes for reducing the number of database connections in DSpace 5.7: <a href="https://jira.duraspace.org/browse/DS-3551">https://jira.duraspace.org/browse/DS-3551</a></li>
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<li>Update text on CGSpace about page to give some tips to developers about using the resources more wisely (<a href="https://github.com/ilri/DSpace/pull/352">#352</a>)</li>
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<li>Linode alerted that CGSpace was using 396.3% CPU from 12 to 2 PM</li>
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<li>The REST and OAI API logs look pretty much the same as earlier this morning, but there’s a new IP harvesting XMLUI:</li>
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</ul>
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<pre><code># cat /var/log/nginx/access.log /var/log/nginx/access.log.1 /var/log/nginx/library-access.log /var/log/nginx/library-access.log.1 | grep -E "18/Dec/2017" | awk '{print $1}' | sort -n | uniq -c | sort -h | tail
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360 95.108.181.88
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477 66.249.66.90
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526 86.101.203.216
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691 207.46.13.13
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698 197.210.168.174
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819 207.46.13.146
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878 68.180.229.254
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1965 104.196.152.243
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17701 2.86.72.181
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52532 137.108.70.7
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</code></pre>
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<ul>
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<li>2.86.72.181 appears to be from Greece, and has the following user agent:</li>
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</ul>
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<pre><code>Mozilla/3.0 (compatible; Indy Library)
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</code></pre>
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<ul>
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<li>Surprisingly it seems they are re-using their Tomcat session for all those 17,000 requests:</li>
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</ul>
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<pre><code>$ grep 2.86.72.181 dspace.log.2017-12-18 | grep -o -E 'session_id=[A-Z0-9]{32}' | sort -n | uniq | wc -l
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1
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</code></pre>
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<ul>
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<li>I guess there’s nothing I can do to them for now</li>
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<li>In other news, I am curious how many PostgreSQL connection pool errors we’ve had in the last month:</li>
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</ul>
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<pre><code>$ grep -c "Cannot get a connection, pool error Timeout waiting for idle object" dspace.log.2017-1* | grep -v :0
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dspace.log.2017-11-07:15695
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dspace.log.2017-11-08:135
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dspace.log.2017-11-17:1298
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dspace.log.2017-11-26:4160
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dspace.log.2017-11-28:107
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dspace.log.2017-11-29:3972
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dspace.log.2017-12-01:1601
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dspace.log.2017-12-02:1274
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dspace.log.2017-12-07:2769
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</code></pre>
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@ -4,7 +4,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/2017-12/</loc>
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<lastmod>2017-12-18T14:02:24+02:00</lastmod>
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<lastmod>2017-12-18T15:20:37+02:00</lastmod>
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</url>
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<url>
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@ -139,7 +139,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/</loc>
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<lastmod>2017-12-18T14:02:24+02:00</lastmod>
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<lastmod>2017-12-18T15:20:37+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -150,7 +150,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
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<lastmod>2017-12-18T14:02:24+02:00</lastmod>
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<lastmod>2017-12-18T15:20:37+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -162,13 +162,13 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/post/</loc>
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<lastmod>2017-12-18T14:02:24+02:00</lastmod>
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<lastmod>2017-12-18T15:20:37+02:00</lastmod>
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<priority>0</priority>
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</url>
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
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<lastmod>2017-12-18T14:02:24+02:00</lastmod>
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<lastmod>2017-12-18T15:20:37+02:00</lastmod>
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<priority>0</priority>
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</url>
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