unifi-docker

Important note

UniFi is presently broken in the current kernel of many popular distributions (See UniFi Forum post for details). This image contains a fix you can activate throught the JVM_MAX_THREAD_STACK_SIZE environment variable. An example of how to do this on the docker command line is --env JVM_MAX_THREAD_STACK_SIZE=1280k. Depending on your docker stack you may need to pass this environment variable another way, please see the relevant software's documentation for passing environment variables.

Description

This is a containerized version of Ubiqiti Network's Unifi Controller version 5.

Use docker run --net=host -d jacobalberty/unifi:unifi5 to run it.

The following options may be of use:

Set the timezone with TZ
Bind mount the data and log volumes

Example to test with

mkdir -p unifi/data
mkdir -p unifi/logs
docker run --rm --net=host -e TZ='Africa/Johannesburg' -v ~/unifi/data:/var/lib/unifi -v ~/unifi/logs:/var/log/unifi --name unifi jacobalberty/unifi:unifi5

Volumes:

`/var/lib/unifi`

Configuration data

`/var/log/unifi`

Log files

`/var/run/unifi`

Run information

Environment Variables:

`TZ`

TimeZone. (i.e America/Chicago)

`JVM_MAX_THREAD_STACK_SIZE`

used to set max thread stack size for the JVM

Ex:

--env JVM_MAX_THREAD_STACK_SIZE=1280k

as a fix for https://community.ubnt.com/t5/UniFi-Routing-Switching/IMPORTANT-Debian-Ubuntu-users-MUST-READ-Updated-06-21/m-p/1968251#M48264

Expose:

8080/tcp - Device command/control

8443/tcp - Web interface + API

8843/tcp - HTTPS portal

8880/tcp - HTTP portal

3478/udp - STUN service

6789/tcp - Speed Test (unifi5 only)

10001/udp - UBNT Discovery

See UniFi - Ports Used

Mulit-process container

While micro-service patterns try to avoid running multiple processes in a container, the unifi5 container tries to follow the same process execution model intended by the original debian package and it's init script, while trying to avoid needing to run a full init system.

Essentially, dump-init runs a simple shell wrapper script placed at /usr/local/bin/unifi.sh. unifi.sh executes and waits on the jsvc process which orchestrates running the controller as a service. The wrapper script also traps SIGTERM to issue the appropriate stop command to the unifi java com.ubnt.ace.Launcher process in the hopes that it helps keep the shutdown graceful.

Example seen within the container after it was started

$  docker exec -it ef081fcf6440 bash
# ps -e -o pid,ppid,cmd | more
  PID  PPID CMD
    1     0 /usr/bin/dumb-init -- /usr/local/bin/unifi.sh
    7     1 sh /usr/local/bin/unifi.sh
    9     7 unifi -nodetach -home /usr/lib/jvm/java-8-openjdk-amd64 -classpath /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /var/run/unifi/unifi.pid -procname unifi -outfile /var/log/unifi/unifi.out.log -errfile /var/log/unifi/unifi.err.log -Dunifi.datadir=/var/lib/unifi -Dunifi.rundir=/var/run/unifi -Dunifi.logdir=/var/log/unifi -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Xmx1024M -Xms32M com.ubnt.ace.Launcher start
   10     9 unifi -nodetach -home /usr/lib/jvm/java-8-openjdk-amd64 -classpath /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /var/run/unifi/unifi.pid -procname unifi -outfile /var/log/unifi/unifi.out.log -errfile /var/log/unifi/unifi.err.log -Dunifi.datadir=/var/lib/unifi -Dunifi.rundir=/var/run/unifi -Dunifi.logdir=/var/log/unifi -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Xmx1024M -Xms32M com.ubnt.ace.Launcher start
   31    10 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -Xmx1024M -XX:ErrorFile=/usr/lib/unifi/data/logs/hs_err_pid<pid>.log -Dapple.awt.UIElement=true -jar /usr/lib/unifi/lib/ace.jar start
   58    31 bin/mongod --dbpath /usr/lib/unifi/data/db --port 27117 --logappend --logpath logs/mongod.log --nohttpinterface --bind_ip 127.0.0.1
  108     0 bash
  116   108 ps -e -o pid,ppid,cmd
  117   108 [bash]

Certificate Support

To use custom SSL certs, you must map a volume with the certs to /var/cert/unifi

They should be named:

cert.pem  # The Certificate
privkey.pem # Private key for the cert
chain.pem # full cert chain

For letsencrypt certs, we'll autodetect that and add the needed Identrust X3 CA Cert automatically.

TODO

Future work?

Don't run as root (but Unifi's Debian package does by the way...)
Possibly use Debian image with systemd init included (but thus far, I don't know of an official Debian systemd image to base off)

yanniks / unifi-docker