resizing to smaller VPS

I'm currently paying $12/month for my VPS (virtual private server) that has 2GB of RAM and 25GB of storage. I had been paying $6/month previously, but including Neo4j bumped the memory usage to nearly 100%. (CPU usage is averaging around 10% and spikes to 30%.)

I have a few iterations of the source code for the webserver so I'll need to figure out which is actually in use. After logging into the VPS, I see I have two folders:

allofphysics.com
ui_v7_website_flask_json

Using docker images I see the latest image (from 7 months ago) is allofphysicscom-flask. That doesn't help me figure out which repo is in use.

allofphysics.com/docker-compose.yaml has neo4j, whereas ui_v7_website_flask_json/docker-compose.yaml does not. Therefore I'm currently operating out of allofphysics.com/docker-compose.yaml

I have two options: either revert to the "v7" or disable neo4j in "allofphysics.com".

Going with option 1,

~/allofphysics.com$ docker compose down
~/allofphysics.com$ cd ~/ui_v7_website_flask_json
~/ui_v7_website_flask_json$ git pull
~/ui_v7_website_flask_json$ make

Turns out the packages are pretty old. The opencv package wasn't compatible. After I reverted all pip packages to known good version numbers I found the crypto libraries weren't happy. Eventually I was able to get a docker image built.

Next the certs weren't present so I copied those from ~/allofphysics.com/certs/ and that worked.

To free up disk space I ran

docker images | grep none | tr -s ' ' | cut -d' ' -f3 | xargs docker rmi

I powered down the VPS, changed to a smaller size, powered on, and then ran make to get a running webserver.