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(Last edited by Zoot on 10 Dec 2017.)

Prerequisite Packages

OpenJDK 8 JRE

Install openjdk8-jre from the community repository.

Edit /etc/apk/respositories and uncomment the appropriate community repository for your Alpine version:

http://host.name/alpine_version/community

Update the package cache.

apk update

Install the package.

apk add openjdk8-jre

MongoDB

Install MongoDB

apk add mongodb

s6

Install s6

apk add s6

Install UniFi Controller

Create the unifi user and group.

adduser -D -H /srv/unifi -g unifi unifi

Change to the parent folder within which you wish to install the UniFi Controller.

cd /srv

Download the generic unix archive of the VERSION you wish to install.

wget http://www.ubnt.com/downloads/unifi/VERSION/UniFi.unix.zip

Unpack the archive.

unzip UniFi.unix.zip

Rename the unpacked directory.

mv UniFi unifi

Change ownership.

chown unifi:unifi unifi

Lock down permissions.

chmod o-rwx unifi

Change into the UniFi bin directory.

cd /srv/unifi/bin

Remove the existing file.

rm mongod

Create a symlink to /usr/bin/mongod

ln -s /usr/bin/mongod

Configure Service Management

Create UniFi Service Directory and Files

Create an s6 service directory for UniFi.

mkdir -p /etc/unifi/log

Add the run script, using your favourite editor.

vim /etc/unifi/run

Copy and paste the following into it.

#!/bin/ash

user='unifi'
group='unifi'

exec 2>&1

base='/srv/unifi'

if [ -d $base ]; then
    cd $base
    chown -R $user:$group .
    version=`head -1 webapps/ROOT/app-unifi/.version`
    echo "Starting UniFi Controller $version"
    exec s6-setuidgid $user java -jar lib/ace.jar start
else
    echo "Missing $base ... aborting"
    touch down
fi

Ensure that the run script is executable:

chmod 755 /etc/unifi/run

Add the log/run script, using your favourite editor.

vim /etc/unifi/log/run

Copy and paste the following into it.

#!/bin/ash

log_user='log'

exec s6-setuidgid $log_user s6-log -b n20 s1000000 t /var/log/unifi

Ensure that the log/run script is executable:

chmod 755 /etc/unifi/run

Create log User and Directory

Create the log user and group.

adduser -D -H /var/log -g log log

Create the /var/log/unifi directory

mkdir -p /var/log/unifi

Update the directory ownership.

chown log:log /var/log/unifi

Lock down the permissions.

chmod 750 /var/log/unifi

Create the OpenRC Service Script

Open the script file using your favourite editor.

vim /etc/init.d/unifi

Paste the following into it.

#!/sbin/openrc-run

name="unifi"
supervisor=s6
s6_service_path="${RC_SVCDIR}/s6-scan/${name}"

depend() {
	need net s6-svscan
	after firewall
}

start_pre() {
        if [ ! -L "${RC_SVCDIR}/s6-scan/${name}" ]; then
	        ln -s "/etc/${name}" "${RC_SVCDIR}/s6-scan/${name}"
	fi
}

Ensure that the script is executable.

chmod 755 /etc/init.d/unifi

Start the UniFi Controller Service

rc-service unifi start

Configure the UniFi Controller Service to start on boot

rc-update add unifi boot

Simple Backup Script

Create /usr/local/bin/unifi-backup using your favourite editor.

Paste the following into the file.

#!/bin/ash

conf_dir='/etc/unifi'
backup_dir='/srv/backup/unifi'
service_dir='/run/openrc/s6-scan/unifi'

start_state='down'

if s6-svok $service_dir; then
    if s6-svstat -o up,ready $service_dir | grep -q true; then
        echo 'Stopping the UniFi Controller'
        start_state='up'
        s6-svc -d $service_dir
        sleep 3
    fi
else
    echo 'Warning: The UniFi Controller is not supervised'
    exit 1
fi

if s6-svstat -o up $service_dir | grep -q false; then
    echo 'Success: The UniFi Controller was stopped'
else
    echo 'Error: The UniFi Controller is still running'
    exit 1
fi

stamp=`date +%Y-%m-%d_%H%M%S`

mkdir -p $backup_dir
cd $backup_dir
mkdir "data-$stamp"

echo "Backing up to /srv/backup/unifi/data-$stamp.tar.gz"

if rsync -az /srv/unifi/data/ "data-$stamp"; then
    echo '* rsync succeeded'
    if tar czf "data-$stamp.tar.gz" "data-$stamp"; then
        echo '* tar succeeded'
        rm -rf "data-$stamp"
        echo 'Backup succeeded'
    else
        echo 'Backup failed: tar failed'
	exit 1
    fi
fi

if [ "$start_state" == 'up' ]; then
    echo 'Starting the UniFi Controller'
    s6-svc -u $service_dir
    sleep 5
    s6-svstat $service_dir
fi