Add notes for 2022-07-17

content/posts/2022-07.md

@@ -285,4 +285,38 @@ $ grep 65.108.95.23 dspace.log.2022-07-10 | grep -oE 'session_id=[A-Z0-9]{32}:ip
   - The reason is apparently that the default `db.dialect` changed from "org.dspace.storage.rdbms.hibernate.postgres.DSpacePostgreSQL82Dialect" to "org.hibernate.dialect.PostgreSQL94Dialect" as a result of a Hibernate update
 - Then I was getting more errors starting the backend server in Tomcat, but the issue was that the backend server needs Solr to be up first!
 
+## 2022-07-17
+
+- Start a harvest on AReS around 3:30PM
+- Later in the evening I see CGSpace was going down and up (not as bad as last Sunday) with around 18.0 load...
+- I see very high CPU usage:
+
+![CPU day](/cgspace-notes/2022/07/cpu-day2.png)
+
+- But DSpace sessions are normal (not like last weekend):
+
+![DSpace sessions week](/cgspace-notes/2022/07/jmx_dspace_sessions-week2.png)
+
+- I see some Hetzner IPs in the top users today, but most of the requests are getting HTTP 503 because of the changes I made last week
+- I see 137.184.159.211, which is on Digital Ocean, and the DNS is apparently iitawpsite.iita.org
+  - I've seen their user agent before, but I don't think I knew it was IITA: "GuzzleHttp/6.3.3 curl/7.84.0 PHP/7.4.30"
+  - I already have something in nginx to mark Guzzle as a bot, but interestingly it shows up in Solr as `$http_user_agent` so there is a logic error in my nginx config
+- Ouch, the logic error seems to be this:
+
+```console
+geo $ua {
+    default          $http_user_agent;
+
+    include /etc/nginx/bot-networks.conf;
+}
+```
+
+- After some testing on DSpace Test I see that this is actually setting the default user agent to a literal `$http_user_agent`
+- The [nginx map docs](http://nginx.org/en/docs/http/ngx_http_map_module.html) say:
+
+> The resulting value can contain text, variable (0.9.0), and their combination (1.11.0).
+
+- But I can't get it to work, neither for the default value or for matching my IP...
+  - I will have to ask on the nginx mailing list
+
 <!-- vim: set sw=2 ts=2: -->

docs/2022-07/index.html

@@ -19,7 +19,7 @@ Also, the trgm functions I’ve used before are case insensitive, but Levens
 <meta property="og:type" content="article" />
 <meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2022-07/" />
 <meta property="article:published_time" content="2022-07-02T14:07:36+03:00" />
-<meta property="article:modified_time" content="2022-07-12T12:15:17+03:00" />
+<meta property="article:modified_time" content="2022-07-14T16:46:24+03:00" />
 
 
 
@@ -44,9 +44,9 @@ Also, the trgm functions I&rsquo;ve used before are case insensitive, but Levens
   "@type": "BlogPosting",
   "headline": "July, 2022",
   "url": "https://alanorth.github.io/cgspace-notes/2022-07/",
-  "wordCount": "1743",
+  "wordCount": "1959",
   "datePublished": "2022-07-02T14:07:36+03:00",
-  "dateModified": "2022-07-12T12:15:17+03:00",
+  "dateModified": "2022-07-14T16:46:24+03:00",
   "author": {
     "@type": "Person",
     "name": "Alan Orth"
@@ -445,6 +445,46 @@ Also, the trgm functions I&rsquo;ve used before are case insensitive, but Levens
 </li>
 <li>Then I was getting more errors starting the backend server in Tomcat, but the issue was that the backend server needs Solr to be up first!</li>
 </ul>
+<h2 id="2022-07-17">2022-07-17</h2>
+<ul>
+<li>Start a harvest on AReS around 3:30PM</li>
+<li>Later in the evening I see CGSpace was going down and up (not as bad as last Sunday) with around 18.0 load&hellip;</li>
+<li>I see very high CPU usage:</li>
+</ul>
+<p><img src="/cgspace-notes/2022/07/cpu-day2.png" alt="CPU day"></p>
+<ul>
+<li>But DSpace sessions are normal (not like last weekend):</li>
+</ul>
+<p><img src="/cgspace-notes/2022/07/jmx_dspace_sessions-week2.png" alt="DSpace sessions week"></p>
+<ul>
+<li>I see some Hetzner IPs in the top users today, but most of the requests are getting HTTP 503 because of the changes I made last week</li>
+<li>I see 137.184.159.211, which is on Digital Ocean, and the DNS is apparently iitawpsite.iita.org
+<ul>
+<li>I&rsquo;ve seen their user agent before, but I don&rsquo;t think I knew it was IITA: &ldquo;GuzzleHttp/6.3.3 curl/7.84.0 PHP/7.4.30&rdquo;</li>
+<li>I already have something in nginx to mark Guzzle as a bot, but interestingly it shows up in Solr as <code>$http_user_agent</code> so there is a logic error in my nginx config</li>
+</ul>
+</li>
+<li>Ouch, the logic error seems to be this:</li>
+</ul>
+<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-console" data-lang="console"><span style="display:flex;"><span>geo $ua {
+</span></span><span style="display:flex;"><span>    default          $http_user_agent;
+</span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    include /etc/nginx/bot-networks.conf;
+</span></span><span style="display:flex;"><span>}
+</span></span></code></pre></div><ul>
+<li>After some testing on DSpace Test I see that this is actually setting the default user agent to a literal <code>$http_user_agent</code></li>
+<li>The <a href="http://nginx.org/en/docs/http/ngx_http_map_module.html">nginx map docs</a> say:</li>
+</ul>
+<blockquote>
+<p>The resulting value can contain text, variable (0.9.0), and their combination (1.11.0).</p>
+</blockquote>
+<ul>
+<li>But I can&rsquo;t get it to work, neither for the default value or for matching my IP&hellip;
+<ul>
+<li>I will have to ask on the nginx mailing list</li>
+</ul>
+</li>
+</ul>
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