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Add notes for 2017-11-22

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Alan Orth 2017-11-22 10:20:44 +02:00
parent f496c63536
commit c5d1371220
Signed by: alanorth
GPG Key ID: 0FB860CC9C45B1B9
3 changed files with 59 additions and 8 deletions
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24
content/post/2017-11.md
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@ -756,3 +756,27 @@ $ grep -c com.atmire.utils.UpdateSolrStatsMetadata dspace.log.2017-11-19
```
2017-11-21 11:11:09,621 WARN org.dspace.authenticate.LDAPAuthentication @ anonymous:session_id=2FEC0E5286C17B6694567FFD77C3171C:ip_addr=77.241.141.58:ldap_authentication:type=failed_auth javax.naming.CommunicationException\colon; simple bind failed\colon; svcgroot2.cgiarad.org\colon;3269 [Root exception is javax.net.ssl.SSLHandshakeException\colon; sun.security.validator.ValidatorException\colon; PKIX path validation failed\colon; java.security.cert.CertPathValidatorException\colon; validity check failed]
```
## 2017-11-22
- Linode sent an alert that the CPU usage on the CGSpace server was very high around 4 to 6 AM
- The logs don't show anything particularly abnormal between those hours:
```
# cat /var/log/nginx/access.log /var/log/nginx/access.log.1 | grep -E "22/Nov/2017:0[456]" | awk '{print $1}' | sort -n | uniq -c | sort -h | tail
136 31.6.77.23
174 68.180.229.254
217 66.249.66.91
256 157.55.39.79
268 54.144.57.183
281 207.46.13.137
282 207.46.13.36
290 207.46.13.23
696 66.249.66.90
707 104.196.152.243
```
- I haven't seen 54.144.57.183 before, it is apparently the CCBot from commoncrawl.org
- In other news, it looks like the JVM garbage collection pattern is back to its standard jigsaw pattern after switching back to CMS a few days ago:
![Tomcat JVM with CMS GC](/cgspace-notes/2017/11/tomcat-jvm-cms.png)

33
public/2017-11/index.html
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@ -38,7 +38,7 @@ COPY 54701
<meta property="article:published_time" content="2017-11-02T09:37:54&#43;02:00"/>
<meta property="article:modified_time" content="2017-11-20T15:56:01&#43;02:00"/>
<meta property="article:modified_time" content="2017-11-21T20:23:00&#43;02:00"/>
@ -86,9 +86,9 @@ COPY 54701
"@type": "BlogPosting",
"headline": "November, 2017",
"url": "https://alanorth.github.io/cgspace-notes/2017-11/",
"wordCount": "4436",
"wordCount": "4549",
"datePublished": "2017-11-02T09:37:54&#43;02:00",
"dateModified": "2017-11-20T15:56:01&#43;02:00",
"dateModified": "2017-11-21T20:23:00&#43;02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -998,6 +998,33 @@ $ grep -c com.atmire.utils.UpdateSolrStatsMetadata dspace.log.2017-11-19
<pre><code>2017-11-21 11:11:09,621 WARN org.dspace.authenticate.LDAPAuthentication @ anonymous:session_id=2FEC0E5286C17B6694567FFD77C3171C:ip_addr=77.241.141.58:ldap_authentication:type=failed_auth javax.naming.CommunicationException\colon; simple bind failed\colon; svcgroot2.cgiarad.org\colon;3269 [Root exception is javax.net.ssl.SSLHandshakeException\colon; sun.security.validator.ValidatorException\colon; PKIX path validation failed\colon; java.security.cert.CertPathValidatorException\colon; validity check failed]
</code></pre>
<h2 id="2017-11-22">2017-11-22</h2>
<ul>
<li>Linode sent an alert that the CPU usage on the CGSpace server was very high around 4 to 6 AM</li>
<li>The logs don&rsquo;t show anything particularly abnormal between those hours:</li>
</ul>
<pre><code># cat /var/log/nginx/access.log /var/log/nginx/access.log.1 | grep -E &quot;22/Nov/2017:0[456]&quot; | awk '{print $1}' | sort -n | uniq -c | sort -h | tail
136 31.6.77.23
174 68.180.229.254
217 66.249.66.91
256 157.55.39.79
268 54.144.57.183
281 207.46.13.137
282 207.46.13.36
290 207.46.13.23
696 66.249.66.90
707 104.196.152.243
</code></pre>
<ul>
<li>I haven&rsquo;t seen 54.144.57.183 before, it is apparently the CCBot from commoncrawl.org</li>
<li>In other news, it looks like the JVM garbage collection pattern is back to its standard jigsaw pattern after switching back to CMS a few days ago:</li>
</ul>
<p><img src="/cgspace-notes/2017/11/tomcat-jvm-cms.png" alt="Tomcat JVM with CMS GC" /></p>

10
public/sitemap.xml
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@ -4,7 +4,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/2017-11/</loc>
<lastmod>2017-11-20T15:56:01+02:00</lastmod>
<lastmod>2017-11-21T20:23:00+02:00</lastmod>
</url>
<url>
@ -134,7 +134,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2017-11-20T15:56:01+02:00</lastmod>
<lastmod>2017-11-21T20:23:00+02:00</lastmod>
<priority>0</priority>
</url>
@ -145,7 +145,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
<lastmod>2017-11-20T15:56:01+02:00</lastmod>
<lastmod>2017-11-21T20:23:00+02:00</lastmod>
<priority>0</priority>
</url>
@ -157,13 +157,13 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/post/</loc>
<lastmod>2017-11-20T15:56:01+02:00</lastmod>
<lastmod>2017-11-21T20:23:00+02:00</lastmod>
<priority>0</priority>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
<lastmod>2017-11-20T15:56:01+02:00</lastmod>
<lastmod>2017-11-21T20:23:00+02:00</lastmod>
<priority>0</priority>
</url>