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Add notes for 2019-02-07
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@ -296,4 +296,64 @@ $ dspace metadata-import -f /tmp/2019-02-06-CTA-multiple-subjects.csv
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5102 45.5.186.2
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```
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## 2019-02-07
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- Linode sent an alert last night that the load on CGSpace (linode18) was over 300%
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- Here are the top IPs in the web server and API logs before, during, and after that time, respectively:
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```
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# zcat --force /var/log/nginx/{oai,rest,statistics}.log /var/log/nginx/{oai,rest,statistics}.log.1 | grep -E "06/Feb/2019:(17|18|19|20|23)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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5 66.249.66.209
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6 2a01:4f8:210:51ef::2
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6 40.77.167.75
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9 104.198.9.108
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9 157.55.39.192
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10 157.55.39.244
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12 66.249.66.221
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20 95.108.181.88
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27 66.249.66.219
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2381 45.5.186.2
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# zcat --force /var/log/nginx/{access,error,library-access}.log /var/log/nginx/{access,error,library-access}.log.1 | grep -E "06/Feb/2019:(17|18|19|20|23)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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455 45.5.186.2
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506 40.77.167.75
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559 54.70.40.11
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825 157.55.39.244
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871 2a01:4f8:140:3192::2
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938 157.55.39.192
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1058 85.25.237.71
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1416 5.9.6.51
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1606 66.249.66.219
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1718 35.237.175.180
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```
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- Then again this morning another alert:
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```
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# zcat --force /var/log/nginx/{oai,rest,statistics}.log /var/log/nginx/{oai,rest,statistics}.log.1 | grep -E "07/Feb/2019:0(5|6|7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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5 66.249.66.223
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8 104.198.9.108
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13 110.54.160.222
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24 66.249.66.219
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25 175.158.217.98
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214 34.218.226.147
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346 45.5.184.72
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4529 45.5.186.2
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4661 205.186.128.185
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4661 70.32.83.92
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# zcat --force /var/log/nginx/{access,error,library-access}.log /var/log/nginx/{access,error,library-access}.log.1 | grep -E "07/Feb/2019:0(5|6|7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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145 157.55.39.237
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154 66.249.66.221
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214 34.218.226.147
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261 35.237.175.180
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273 2a01:4f8:140:3192::2
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300 169.48.66.92
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487 5.143.231.39
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766 5.9.6.51
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771 85.25.237.71
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848 66.249.66.219
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```
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- So it seems that the load issue comes from the REST API, not the XMLUI
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- I could probably rate limit the REST API, or maybe just keep increasing the alert threshold so I don't get alert spam (this is probably the correct approach because it seems like the REST API can keep up with the requests and is returning HTTP 200 status as far as I can tell)
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<!-- vim: set sw=2 ts=2: -->
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@ -42,7 +42,7 @@ sys 0m1.979s
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<meta property="og:type" content="article" />
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<meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2019-02/" />
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<meta property="article:published_time" content="2019-02-01T21:37:30+02:00"/>
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<meta property="article:modified_time" content="2019-02-05T09:22:06+02:00"/>
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<meta property="article:modified_time" content="2019-02-06T16:50:39+02:00"/>
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<meta name="twitter:card" content="summary"/>
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<meta name="twitter:title" content="February, 2019"/>
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@ -89,9 +89,9 @@ sys 0m1.979s
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"@type": "BlogPosting",
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"headline": "February, 2019",
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"url": "https://alanorth.github.io/cgspace-notes/2019-02/",
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"wordCount": "1435",
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"wordCount": "1724",
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"datePublished": "2019-02-01T21:37:30+02:00",
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"dateModified": "2019-02-05T09:22:06+02:00",
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"dateModified": "2019-02-06T16:50:39+02:00",
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"author": {
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"@type": "Person",
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"name": "Alan Orth"
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@ -485,6 +485,70 @@ PESCAS E AQUACULTURE,PISCICULTURA||AQUACULTURE
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5102 45.5.186.2
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</code></pre>
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<h2 id="2019-02-07">2019-02-07</h2>
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<ul>
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<li>Linode sent an alert last night that the load on CGSpace (linode18) was over 300%</li>
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<li>Here are the top IPs in the web server and API logs before, during, and after that time, respectively:</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/{oai,rest,statistics}.log /var/log/nginx/{oai,rest,statistics}.log.1 | grep -E "06/Feb/2019:(17|18|19|20|23)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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5 66.249.66.209
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6 2a01:4f8:210:51ef::2
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6 40.77.167.75
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9 104.198.9.108
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9 157.55.39.192
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10 157.55.39.244
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12 66.249.66.221
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20 95.108.181.88
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27 66.249.66.219
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2381 45.5.186.2
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# zcat --force /var/log/nginx/{access,error,library-access}.log /var/log/nginx/{access,error,library-access}.log.1 | grep -E "06/Feb/2019:(17|18|19|20|23)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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455 45.5.186.2
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506 40.77.167.75
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559 54.70.40.11
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825 157.55.39.244
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871 2a01:4f8:140:3192::2
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938 157.55.39.192
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1058 85.25.237.71
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1416 5.9.6.51
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1606 66.249.66.219
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1718 35.237.175.180
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</code></pre>
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<ul>
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<li>Then again this morning another alert:</li>
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</ul>
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<pre><code># zcat --force /var/log/nginx/{oai,rest,statistics}.log /var/log/nginx/{oai,rest,statistics}.log.1 | grep -E "07/Feb/2019:0(5|6|7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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5 66.249.66.223
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8 104.198.9.108
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13 110.54.160.222
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24 66.249.66.219
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25 175.158.217.98
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214 34.218.226.147
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346 45.5.184.72
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4529 45.5.186.2
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4661 205.186.128.185
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4661 70.32.83.92
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# zcat --force /var/log/nginx/{access,error,library-access}.log /var/log/nginx/{access,error,library-access}.log.1 | grep -E "07/Feb/2019:0(5|6|7|8|9)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
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145 157.55.39.237
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154 66.249.66.221
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214 34.218.226.147
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261 35.237.175.180
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273 2a01:4f8:140:3192::2
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300 169.48.66.92
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487 5.143.231.39
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766 5.9.6.51
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771 85.25.237.71
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848 66.249.66.219
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</code></pre>
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<ul>
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<li>So it seems that the load issue comes from the REST API, not the XMLUI</li>
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<li>I could probably rate limit the REST API, or maybe just keep increasing the alert threshold so I don’t get alert spam (this is probably the correct approach because it seems like the REST API can keep up with the requests and is returning HTTP 200 status as far as I can tell)</li>
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</ul>
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<!-- vim: set sw=2 ts=2: -->
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@ -4,7 +4,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/2019-02/</loc>
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<lastmod>2019-02-05T09:22:06+02:00</lastmod>
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<lastmod>2019-02-06T16:50:39+02:00</lastmod>
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</url>
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<url>
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@ -209,7 +209,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/</loc>
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<lastmod>2019-02-05T09:22:06+02:00</lastmod>
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<lastmod>2019-02-06T16:50:39+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -220,7 +220,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
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<lastmod>2019-02-05T09:22:06+02:00</lastmod>
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<lastmod>2019-02-06T16:50:39+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -232,13 +232,13 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
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<lastmod>2019-02-05T09:22:06+02:00</lastmod>
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<lastmod>2019-02-06T16:50:39+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>2019-02-05T09:22:06+02:00</lastmod>
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<lastmod>2019-02-06T16:50:39+02:00</lastmod>
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<priority>0</priority>
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</url>
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