Upgrade to 3.3 is failing for me

[merefield (Robert)]

UI upgrades require more memory I believe because you are trying to run the site and rebuilding simultaneously.

Make sure you have enough swap to cope - at least as much as your RAM.

So on 4GB server make sure you have 4GB swap.

@peternlewis

cd /var/discourse
git pull
./launcher rebuild app

Btw the git pull here is redundant. The build script does this for you.