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Steps to install Unifi 5.6.29 in a Ubuntu 16.04 unpriveleged LXC
  • Last tested version: 5.7.20

0. Preparation

  • Make sure LXC has more than 12GB, otherwise Unifi fails to start!

1. Follow steps from Ubiquiti site

# for unifi
echo 'deb stable ubiquiti' | sudo tee /etc/apt/sources.list.d/100-ubnt-unifi.list
wget -O /etc/apt/trusted.gpg.d/unifi-repo.gpg
# for mongodb
apt-key adv --keyserver hkp:// --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
echo "deb [ arch=amd64,arm64 ] xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list

apt update
apt install unifi mongodb-org

2. Ensure systemd services are enabled

systemctl enable unifi
systemctl enable mongod

3. If errors occur!

Unifi throws some cryptic error messages: cat /usr/lib/unifi/logs/server.log
When LXC had <12GB allocated: <UniFi> ERROR system - [exec] error,rc=1
When it could not connect to mongod: <db-server> ERROR system - [exec] error, rc=2
To fix mongod issue, need to replace /usr/lib/unifi/bin/mongod:

cd /usr/lib/unifi/bin
mv mongod mongod.old

nano mongod

exec /usr/bin/mongod ${*//--nohttpinterface/}

chmod 755 /usr/lib/unifi/bin/mongod


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@ammgws ammgws commented Apr 10, 2018

Got bitten by the mongod bug again after upgrading to Unifi 5.7.20. I guess it will probably happen every upgrade. Thank you to past-me for taking notes and saving my time!


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@mhirsch mhirsch commented Aug 2, 2018

Thanks very much for posting this!

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