Forum upgrade crashing at Upgrade `docker_manager`

[modius (Geoff Bowers)]

@codinghorror

Make absolutely sure you have 2GB of swap space set up.

Just thought I’d update on my fix. Turns out you were right to check if there was a swap file in place – there was not.

Create a swapfile for your Linux server

For servers with <= 2GB of RAM, running ./discourse-setup will prompt for and automatically create a 2GB swapfile. Most cloud virtual machine providers do not set up swapfiles as part of their server provisioning. In particular, upgrading Discourse produces a lot of memory pressure. With a swap file, rather than randomly terminating processes with an out of memory error, things will slow down instead. Having a swap file is a cheap insurance policy that protects you from many other lo…

We use to have a swap file but…

This is how i got to this point, and it might be useful for others:

• was upgrading discourse when postgres upgrade failed
• rather than troubleshoot directly, thought we would simply spin up a new droplet, fresh install and restore from back-up
• used the DigitalOcean instant install for Discourse (this was my MISTAKE)

Looks like the standard Digital Ocean jumpstart thing for Discourse does not set up a swapfile. Probably should have just run through a standard installation from a vanilla Ubuntu install.