After upgrading from Sierra+Server to High Sierra+Server I am running into the problem that port 8080 is occupied by default. This blocks the UniFi controller from launching.
After the upgrade, I lost all my WebDAV shares, for which the simple solution to get them back was setting Wiki Server on.
But now, httpd is listening on port 8080. nmap tells me:
8080/tcp open http-proxy
I wonder, why is this called http-proxy? And lsof:
sudo lsof -i :8080
Password:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
httpd 2229 root 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2238 _www 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2290 _www 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2291 _www 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2291 _www 25u IPv6 0xd734a343f0761a9b 0t0 TCP foo.rna.nl:http-alt->unifi-foo.rna.nl:40018 (ESTABLISHED)
httpd 2292 _www 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2293 _www 4u IPv6 0xd734a34402fd0c9b 0t0 TCP *:http-alt (LISTEN)
httpd 2293 _www 25u IPv6 0xd734a343f0760f1b 0t0 TCP foo.rna.nl:http-alt->unifi-bar.rna.nl:60849 (ESTABLISHED)
The Apache server creates these httpd daemons:
sysbh$ ps laxww|grep 2229
0 2229 1 0 20 0 4280200 6592 - Ss ?? 0:00.35 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
0 2236 2229 0 20 0 4289980 15012 - S ?? 0:00.65 /usr/bin/ruby /usr/libexec/wfs/webdavsharing_mapper
70 2238 2229 0 20 0 4284820 3520 - S ?? 0:00.13 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
70 2290 2229 0 20 0 4280200 2444 - S ?? 0:00.10 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
70 2291 2229 0 20 0 4280200 2508 - S ?? 0:00.12 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
70 2292 2229 0 20 0 4284820 3496 - S ?? 0:00.13 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
70 2293 2229 0 20 0 4280200 2472 - S ?? 0:00.11 /usr/sbin/httpd -D SERVER_APP_HAS_DEFAULT_PORTS -D FOREGROUND
501 3418 711 0 31 0 4258468 24 - R+ s001 0:00.00 grep 2229
And apparently, they listen on port 8080 because /etc/apache2/httpd.conf has:
<IfDefine SERVER_APP_HAS_DEFAULT_PORTS>
Listen 8080
</IfDefine>
<IfDefine !SERVER_APP_HAS_DEFAULT_PORTS>
Listen 80
</IfDefine>
I wonder if mainly it is safe to change 8080 into 8081 there so the web server doesn't clash with the UniFi controller anymore.
It also seems it httpd getting the "-D SERVER_APP_HAS_DEFAULT_PORTS" from /etc/apache2/env.plist via the httpd-wrapper ruby script (which is actually started by the LaunchDaemon)and I was wondering how env.plist gets there.
And I was wondering where the simple page comes from that just has a h1 tag with the text "It works!" when I go to http://localhost:8080/
Note: I have an nginx running (installed with homebrew) but I have turned 8080 off on that install and httpd is running on 8080 even if nginx is not running. However, it is in Homebrew that I find references to "It works!" so far.
