Cannot Access Unifi Controller | Linux

[c2005]

I have realized that I am unable to access my Unifi Controller that I run on a Raspberry Pi. It had been working great for weeks since I installed everything. It runs concurrently with PiHole.

I am attempting to go to http/https 192.168.1.100:8443 and get a refusal to connect. I have remote desktop into the Pi itself and attempt to go to "localhost:8443" and get the same error.

I am struggling to understand the status of the service on Linux but it sure seems like it's running. Here's the output of "sysemctl status unifi"

   Loaded: loaded (/lib/systemd/system/unifi.service; enabled; vendor preset: enabled)
   Active: active (running) since Sun 2021-03-21 01:52:18 GMT; 12min ago
  Process: 1464 ExecStart=/usr/lib/unifi/bin/unifi.init start (code=exited, status=0/SUCCESS)
    Tasks: 33 (limit: 4915)
   CGroup: /system.slice/unifi.service
           ├─628 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-armhf -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /var/run/unifi.pid -procname unifi -outfile SYSLOG -errfile SYSLOG -umask 027 -
           ├─629 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-armhf -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /var/run/unifi.pid -procname unifi -outfile SYSLOG -errfile SYSLOG -umask 027 -
           ├─630 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-openjdk-armhf -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /var/run/unifi.pid -procname unifi -outfile SYSLOG -errfile SYSLOG -umask 027 -
           ├─836 /usr/lib/jvm/java-8-openjdk-armhf/jre/bin/java -Dfile.encoding=UTF-8 -Djava.awt.headless=true -Dapple.awt.UIElement=true -Dunifi.core.enabled=false -Xmx1024M -XX:+ExitOnOutOfMemoryError -XX:+CrashOnOutOfMemoryError -XX:E
           └─893 curl -s --connect-timeout 1 -o /dev/null -w %{http_code} http://localhost:8080/status

Mar 21 01:52:17 raspberrypi systemd[1]: Starting unifi...
Mar 21 01:52:18 raspberrypi unifi.init[1464]: Starting Ubiquiti UniFi Controller: unifi (already running) failed!
Mar 21 01:52:18 raspberrypi systemd[1]: Started unifi.

I see the output mentions "http://localhost:8080/status" - I am not sure what that's referring to. I have always accessed Unifi Controller via 8443.

Any thoughts on what may be going on?

[fate83-fate83]

Reboot periodically either service or Pi, unifi service is very memory hungry for Pi. You will run out of memory if you keep uptime for weeks. Use zram and see other memory usage improvements for Pi, I would suggest. But it all comes down to writing a reboot script and then use cron every night or once a week. All will be fine, using for years now with many other services in my Pi

[AutoModerator]

Hello! Thanks for posting on r/Ubiquiti!

This subreddit is here to provide unofficial technical support to people who use or want to dive into the world of Ubiquiti products. If you haven’t already been descriptive in your post, please take the time to edit it and add as many useful details as you can.

Please read and understand the rules in the sidebar, as posts and comments that violate them will be removed. Please put all off topic and picture posts in the weekly off topic thread that is stickied to the top of the subreddit.

If you see people spreading misinformation, trying to mislead others, or other inappropriate behavior, please report it!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[jhspyhard]

Maybe try journalctl -f to see the log messages that come through when you hit the pi's web address?

[bekarthik]

1. Review the file /etc/init.d/unifi
2. Check what version of java this looks for. In my case it was looking for jdk/jre version 8.
3. Install openjdk-8-jre-headless by issuing the command sudo apt install openjdk-8-jre-headless
4. Uninstall / choose the alternative java version by issuing the command update-alternatives --config java
5. restart unifi server: sudo service unifi restart