mirror of
https://github.com/alanorth/cgspace-notes.git
synced 2024-11-17 20:27:05 +01:00
297 lines
12 KiB
HTML
297 lines
12 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en" >
|
|
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
|
|
|
|
|
|
<meta property="og:title" content="November, 2015" />
|
|
<meta property="og:description" content="2015-11-22
|
|
|
|
CGSpace went down
|
|
Looks like DSpace exhausted its PostgreSQL connection pool
|
|
Last week I had increased the limit from 30 to 60, which seemed to help, but now there are many more idle connections:
|
|
|
|
$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
|
|
78
|
|
" />
|
|
<meta property="og:type" content="article" />
|
|
<meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2015-11/" />
|
|
<meta property="article:published_time" content="2015-11-23T17:00:57+03:00" />
|
|
<meta property="article:modified_time" content="2018-03-09T22:10:33+02:00" />
|
|
|
|
|
|
|
|
<meta name="twitter:card" content="summary"/>
|
|
<meta name="twitter:title" content="November, 2015"/>
|
|
<meta name="twitter:description" content="2015-11-22
|
|
|
|
CGSpace went down
|
|
Looks like DSpace exhausted its PostgreSQL connection pool
|
|
Last week I had increased the limit from 30 to 60, which seemed to help, but now there are many more idle connections:
|
|
|
|
$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
|
|
78
|
|
"/>
|
|
<meta name="generator" content="Hugo 0.111.3">
|
|
|
|
|
|
|
|
<script type="application/ld+json">
|
|
{
|
|
"@context": "http://schema.org",
|
|
"@type": "BlogPosting",
|
|
"headline": "November, 2015",
|
|
"url": "https://alanorth.github.io/cgspace-notes/2015-11/",
|
|
"wordCount": "798",
|
|
"datePublished": "2015-11-23T17:00:57+03:00",
|
|
"dateModified": "2018-03-09T22:10:33+02:00",
|
|
"author": {
|
|
"@type": "Person",
|
|
"name": "Alan Orth"
|
|
},
|
|
"keywords": "Notes"
|
|
}
|
|
</script>
|
|
|
|
|
|
|
|
<link rel="canonical" href="https://alanorth.github.io/cgspace-notes/2015-11/">
|
|
|
|
<title>November, 2015 | CGSpace Notes</title>
|
|
|
|
|
|
<!-- combined, minified CSS -->
|
|
|
|
<link href="https://alanorth.github.io/cgspace-notes/css/style.c6ba80bc50669557645abe05f86b73cc5af84408ed20f1551a267bc19ece8228.css" rel="stylesheet" integrity="sha256-xrqAvFBmlVdkWr4F+GtzzFr4RAjtIPFVGiZ7wZ7Ogig=" crossorigin="anonymous">
|
|
|
|
|
|
<!-- minified Font Awesome for SVG icons -->
|
|
|
|
<script defer src="https://alanorth.github.io/cgspace-notes/js/fontawesome.min.f5072c55a0721857184db93a50561d7dc13975b4de2e19db7f81eb5f3fa57270.js" integrity="sha256-9QcsVaByGFcYTbk6UFYdfcE5dbTeLhnbf4HrXz+lcnA=" crossorigin="anonymous"></script>
|
|
|
|
<!-- RSS 2.0 feed -->
|
|
|
|
|
|
|
|
|
|
</head>
|
|
|
|
<body>
|
|
|
|
|
|
<div class="blog-masthead">
|
|
<div class="container">
|
|
<nav class="nav blog-nav">
|
|
<a class="nav-link " href="https://alanorth.github.io/cgspace-notes/">Home</a>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<header class="blog-header">
|
|
<div class="container">
|
|
<h1 class="blog-title" dir="auto"><a href="https://alanorth.github.io/cgspace-notes/" rel="home">CGSpace Notes</a></h1>
|
|
<p class="lead blog-description" dir="auto">Documenting day-to-day work on the <a href="https://cgspace.cgiar.org">CGSpace</a> repository.</p>
|
|
</div>
|
|
</header>
|
|
|
|
|
|
|
|
|
|
<div class="container">
|
|
<div class="row">
|
|
<div class="col-sm-8 blog-main">
|
|
|
|
|
|
|
|
|
|
<article class="blog-post">
|
|
<header>
|
|
<h2 class="blog-post-title" dir="auto"><a href="https://alanorth.github.io/cgspace-notes/2015-11/">November, 2015</a></h2>
|
|
<p class="blog-post-meta">
|
|
<time datetime="2015-11-23T17:00:57+03:00">Mon Nov 23, 2015</time>
|
|
in
|
|
|
|
<span class="fas fa-tag" aria-hidden="true"></span> <a href="/tags/notes/" rel="tag">Notes</a>
|
|
|
|
</p>
|
|
</header>
|
|
<h2 id="2015-11-22">2015-11-22</h2>
|
|
<ul>
|
|
<li>CGSpace went down</li>
|
|
<li>Looks like DSpace exhausted its PostgreSQL connection pool</li>
|
|
<li>Last week I had increased the limit from 30 to 60, which seemed to help, but now there are many more idle connections:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
|
|
78
|
|
</code></pre><ul>
|
|
<li>For now I have increased the limit from 60 to 90, run updates, and rebooted the server</li>
|
|
</ul>
|
|
<h2 id="2015-11-24">2015-11-24</h2>
|
|
<ul>
|
|
<li>CGSpace went down again</li>
|
|
<li>Getting emails from uptimeRobot and uptimeButler that it’s down, and Google Webmaster Tools is sending emails that there is an increase in crawl errors</li>
|
|
<li>Looks like there are still a bunch of idle PostgreSQL connections:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
|
|
96
|
|
</code></pre><ul>
|
|
<li>For some reason the number of idle connections is very high since we upgraded to DSpace 5</li>
|
|
</ul>
|
|
<h2 id="2015-11-25">2015-11-25</h2>
|
|
<ul>
|
|
<li>Troubleshoot the DSpace 5 OAI breakage caused by nginx routing config</li>
|
|
<li>The OAI application requests stylesheets and javascript files with the path <code>/oai/static/css</code>, which gets matched here:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code># static assets we can load from the file system directly with nginx
|
|
location ~ /(themes|static|aspects/ReportingSuite) {
|
|
try_files $uri @tomcat;
|
|
...
|
|
</code></pre><ul>
|
|
<li>The document root is relative to the xmlui app, so this gets a 404—I’m not sure why it doesn’t pass to <code>@tomcat</code></li>
|
|
<li>Anyways, I can’t find any URIs with path <code>/static</code>, and the more important point is to handle all the static theme assets, so we can just remove <code>static</code> from the regex for now (who cares if we can’t use nginx to send Etags for OAI CSS!)</li>
|
|
<li>Also, I noticed we aren’t setting CSP headers on the static assets, because in nginx headers are inherited in child blocks, but if you use <code>add_header</code> in a child block it doesn’t inherit the others</li>
|
|
<li>We simply need to add <code>include extra-security.conf;</code> to the above location block (but research and test first)</li>
|
|
<li>We should add WOFF assets to the list of things to set expires for:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>location ~* \.(?:ico|css|js|gif|jpe?g|png|woff)$ {
|
|
</code></pre><ul>
|
|
<li>We should also add <code>aspects/Statistics</code> to the location block for static assets (minus <code>static</code> from above):</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>location ~ /(themes|aspects/ReportingSuite|aspects/Statistics) {
|
|
</code></pre><ul>
|
|
<li>Need to check <code>/about</code> on CGSpace, as it’s blank on my local test server and we might need to add something there</li>
|
|
<li>CGSpace has been up and down all day due to PostgreSQL idle connections (current DSpace pool is 90):</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | grep idle | grep -c cgspace
|
|
93
|
|
</code></pre><ul>
|
|
<li>I looked closer at the idle connections and saw that many have been idle for hours (current time on server is <code>2015-11-25T20:20:42+0000</code>):</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | less -S
|
|
datid | datname | pid | usesysid | usename | application_name | client_addr | client_hostname | client_port | backend_start | xact_start |
|
|
-------+----------+-------+----------+----------+------------------+-------------+-----------------+-------------+-------------------------------+-------------------------------+---
|
|
20951 | cgspace | 10966 | 18205 | cgspace | | 127.0.0.1 | | 37731 | 2015-11-25 13:13:02.837624+00 | | 20
|
|
20951 | cgspace | 10967 | 18205 | cgspace | | 127.0.0.1 | | 37737 | 2015-11-25 13:13:03.069421+00 | | 20
|
|
...
|
|
</code></pre><ul>
|
|
<li>There is a relevant Jira issue about this: <a href="https://jira.duraspace.org/browse/DS-1458">https://jira.duraspace.org/browse/DS-1458</a></li>
|
|
<li>It seems there is some sense changing DSpace’s default <code>db.maxidle</code> from unlimited (-1) to something like 8 (Tomcat default) or 10 (Confluence default)</li>
|
|
<li>Change <code>db.maxidle</code> from -1 to 10, reduce <code>db.maxconnections</code> from 90 to 50, and restart postgres and tomcat7</li>
|
|
<li>Also redeploy DSpace Test with a clean sync of CGSpace and mirror these database settings there as well</li>
|
|
<li>Also deploy the nginx fixes for the <code>try_files</code> location block as well as the expires block</li>
|
|
</ul>
|
|
<h2 id="2015-11-26">2015-11-26</h2>
|
|
<ul>
|
|
<li>CGSpace behaving much better since changing <code>db.maxidle</code> yesterday, but still two up/down notices from monitoring this morning (better than 50!)</li>
|
|
<li>CCAFS colleagues mentioned that the REST API is very slow, 24 seconds for one item</li>
|
|
<li>Not as bad for me, but still unsustainable if you have to get many:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ curl -o /dev/null -s -w %{time_total}\\n https://cgspace.cgiar.org/rest/handle/10568/32802?expand=all
|
|
8.415
|
|
</code></pre><ul>
|
|
<li>Monitoring e-mailed in the evening to say CGSpace was down</li>
|
|
<li>Idle connections in PostgreSQL again:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | grep cgspace | grep -c idle
|
|
66
|
|
</code></pre><ul>
|
|
<li>At the time, the current DSpace pool size was 50…</li>
|
|
<li>I reduced the pool back to the default of 30, and reduced the <code>db.maxidle</code> settings from 10 to 8</li>
|
|
</ul>
|
|
<h2 id="2015-11-29">2015-11-29</h2>
|
|
<ul>
|
|
<li>Still more alerts that CGSpace has been up and down all day</li>
|
|
<li>Current database settings for DSpace:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>db.maxconnections = 30
|
|
db.maxwait = 5000
|
|
db.maxidle = 8
|
|
db.statementpool = true
|
|
</code></pre><ul>
|
|
<li>And idle connections:</li>
|
|
</ul>
|
|
<pre tabindex="0"><code>$ psql -c 'SELECT * from pg_stat_activity;' | grep cgspace | grep -c idle
|
|
49
|
|
</code></pre><ul>
|
|
<li>Perhaps I need to start drastically increasing the connection limits—like to 300—to see if DSpace’s thirst can ever be quenched</li>
|
|
<li>On another note, SUNScholar’s notes suggest adjusting some other postgres variables: <a href="http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Database">http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Database</a></li>
|
|
<li>This might help with REST API speed (which I mentioned above and still need to do real tests)</li>
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
|
|
</article>
|
|
|
|
|
|
|
|
</div> <!-- /.blog-main -->
|
|
|
|
<aside class="col-sm-3 ml-auto blog-sidebar">
|
|
|
|
|
|
|
|
<section class="sidebar-module">
|
|
<h4>Recent Posts</h4>
|
|
<ol class="list-unstyled">
|
|
|
|
|
|
<li><a href="/cgspace-notes/2023-04/">April, 2023</a></li>
|
|
|
|
<li><a href="/cgspace-notes/2023-03/">March, 2023</a></li>
|
|
|
|
<li><a href="/cgspace-notes/2023-02/">February, 2023</a></li>
|
|
|
|
<li><a href="/cgspace-notes/2023-01/">January, 2023</a></li>
|
|
|
|
<li><a href="/cgspace-notes/2022-12/">December, 2022</a></li>
|
|
|
|
</ol>
|
|
</section>
|
|
|
|
|
|
|
|
|
|
<section class="sidebar-module">
|
|
<h4>Links</h4>
|
|
<ol class="list-unstyled">
|
|
|
|
<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>
|
|
|
|
</ol>
|
|
</section>
|
|
|
|
</aside>
|
|
|
|
|
|
</div> <!-- /.row -->
|
|
</div> <!-- /.container -->
|
|
|
|
|
|
|
|
<footer class="blog-footer">
|
|
<p dir="auto">
|
|
|
|
Blog template created by <a href="https://twitter.com/mdo">@mdo</a>, ported to Hugo by <a href='https://twitter.com/mralanorth'>@mralanorth</a>.
|
|
|
|
</p>
|
|
<p>
|
|
<a href="#">Back to top</a>
|
|
</p>
|
|
</footer>
|
|
|
|
|
|
</body>
|
|
|
|
</html>
|