https://htyp.org/mw/index.php?action=history&feed=atom&title=User%3AWoozle%2Ftoot.cat%2F2018%2F05%2F20 2026-09-11T05:41:53Z Revision history for this page on the wiki MediaWiki 1.45.3 https://htyp.org/mw/index.php?title=User:Woozle/toot.cat/2018/05/20&diff=23932&oldid=prev 2018-05-20T17:52:45Z

<p>issue documentation</p> <p><b>New page</b></p><div>* &#039;&#039;&#039;symptom&#039;&#039;&#039;: Main page came up, but with no toots. Some other pages would not respond at all.<br /> * &#039;&#039;&#039;cause&#039;&#039;&#039;: <br /> ** [[Nginx]] wasn&#039;t starting, and the status returned by &lt;code&gt;systemctl status nginx.service&lt;/code&gt; included the message &lt;code&gt;bind() to [::]:443 failed (98: Address already in use)&lt;/code&gt;.<br /> ** This was in turn because of a small problem in &lt;code&gt;/etc/nginx/sites-available/tootcat2.hypertwins.net.conf&lt;/code&gt;.<br /> <br /> The lines of interest are:&lt;pre&gt;<br /> server {<br /> listen 443 ssl;<br /> listen [::]:443 ssl ipv6only=on;<br /> &lt;/pre&gt;<br /> <br /> The last line &#039;&#039;was&#039;&#039; set to &lt;code&gt;ipv6only=off&lt;/code&gt;. What that apparently means is that this line will try to listen on [[IPv4]] as well &amp;ndash; but the previous line already has nginx trying to listen on IPv4, so nginx fails when it tries to listen again on the same port. Specifying &lt;code&gt;ipv6only=on&lt;/code&gt; tells it &quot;this line means you&#039;re supposed to &#039;&#039;only&#039;&#039; listen on [[IPv6]], so don&#039;t try anything else here.&quot;, resulting in nginx listening on both IPv4 and IPv6, which is what we want.<br /> <br /> I don&#039;t know why it was even working before; maybe the behavior of nginx changed between versions.</div>

Woozle