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Update notes for 2017-12-19

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Alan Orth 2017-12-19 10:14:51 +02:00
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14
content/post/2017-12.md
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@ -396,3 +396,17 @@ $ schedtool -D -e ionice -c2 -n7 nice -n19 dspace index-discovery
```
- The PostgreSQL issues are getting out of control, I need to figure out how to enable connection pools in Tomcat!
## 2017-12-19
- Briefly had PostgreSQL connection issues on CGSpace for the millionth time
- I'm fucking sick of this!
- The connection graph on CGSpace shows shit tons of connections idle
![Idle PostgreSQL connections on CGSpace](/cgspace-notes/2017/12/postgres-connections-month-cgspace-2.png)
- And I only now just realized that DSpace's `db.maxidle` parameter is not seconds, but number of idle connections to allow.
- So theoretically, because each webapp has its own pool, this could be 20 per app—so no wonder we have 50 idle connections!
- I notice that this number will be set to 10 by default in DSpace 6.1 and 7.0: https://jira.duraspace.org/browse/DS-3564
- So I'm going to reduce ours from 20 to 10 and start trying to figure out how the hell to supply a database pool using Tomcat JNDI
- I re-deployed the `5_x-prod` branch on CGSpace, applied all system updates, and restarted the server

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public/2017-12/index.html
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@ -23,7 +23,7 @@ The list of connections to XMLUI and REST API for today:
<meta property="article:published_time" content="2017-12-01T13:53:54&#43;03:00"/>
<meta property="article:modified_time" content="2017-12-18T17:03:58&#43;02:00"/>
<meta property="article:modified_time" content="2017-12-18T22:07:13&#43;02:00"/>
@ -56,9 +56,9 @@ The list of connections to XMLUI and REST API for today:
"@type": "BlogPosting",
"headline": "December, 2017",
"url": "https://alanorth.github.io/cgspace-notes/2017-12/",
"wordCount": "2244",
"wordCount": "2374",
"datePublished": "2017-12-01T13:53:54&#43;03:00",
"dateModified": "2017-12-18T17:03:58&#43;02:00",
"dateModified": "2017-12-18T22:07:13&#43;02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -561,6 +561,24 @@ $ schedtool -D -e ionice -c2 -n7 nice -n19 dspace index-discovery
<li>The PostgreSQL issues are getting out of control, I need to figure out how to enable connection pools in Tomcat!</li>
</ul>
<h2 id="2017-12-19">2017-12-19</h2>
<ul>
<li>Briefly had PostgreSQL connection issues on CGSpace for the millionth time</li>
<li>I&rsquo;m fucking sick of this!</li>
<li>The connection graph on CGSpace shows shit tons of connections idle</li>
</ul>
<p><img src="/cgspace-notes/2017/12/postgres-connections-month-cgspace-2.png" alt="Idle PostgreSQL connections on CGSpace" /></p>
<ul>
<li>And I only now just realized that DSpace&rsquo;s <code>db.maxidle</code> parameter is not seconds, but number of idle connections to allow.</li>
<li>So theoretically, because each webapp has its own pool, this could be 20 per app—so no wonder we have 50 idle connections!</li>
<li>I notice that this number will be set to 10 by default in DSpace 6.1 and 7.0: <a href="https://jira.duraspace.org/browse/DS-3564">https://jira.duraspace.org/browse/DS-3564</a></li>
<li>So I&rsquo;m going to reduce ours from 20 to 10 and start trying to figure out how the hell to supply a database pool using Tomcat JNDI</li>
<li>I re-deployed the <code>5_x-prod</code> branch on CGSpace, applied all system updates, and restarted the server</li>
</ul>

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public/sitemap.xml
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@ -4,7 +4,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/2017-12/</loc>
<lastmod>2017-12-18T17:03:58+02:00</lastmod>
<lastmod>2017-12-18T22:07:13+02:00</lastmod>
</url>
<url>
@ -139,7 +139,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/</loc>
<lastmod>2017-12-18T17:03:58+02:00</lastmod>
<lastmod>2017-12-18T22:07:13+02:00</lastmod>
<priority>0</priority>
</url>
@ -150,7 +150,7 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
<lastmod>2017-12-18T17:03:58+02:00</lastmod>
<lastmod>2017-12-18T22:07:13+02:00</lastmod>
<priority>0</priority>
</url>
@ -162,13 +162,13 @@
<url>
<loc>https://alanorth.github.io/cgspace-notes/post/</loc>
<lastmod>2017-12-18T17:03:58+02:00</lastmod>
<lastmod>2017-12-18T22:07:13+02:00</lastmod>
<priority>0</priority>
</url>
<url>
<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
<lastmod>2017-12-18T17:03:58+02:00</lastmod>
<lastmod>2017-12-18T22:07:13+02:00</lastmod>
<priority>0</priority>
</url>