Deploying free email server, web hosting panel with CyberPanel on subdomain, FastAPI with SSL, mongoDB transfer

cyberpanel-fastapi-ssl-subdomain

Deploying free email server, web hosting panel with CyberPanel on subdomain
Summary:
Let's say we have a domain "test.com". We want to install an email server for our domain, we want it free.

First make sure the droplet has no app running on port 80, 443 (or nginx, apache websites).

Install CyberPanel,
on DO, https://marketplace.digitalocean.com/apps/cyberpanel
sh <(curl https://cyberpanel.net/install.sh || wget -O - https://cyberpanel.net/install.sh)

mail server:

RDNS is important: https://www.youtube.com/watch?v=8G93NVWkXZk&list=LL&index=4&t=761s

https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands#service-mail


Deploying a simple recommendation rest api service using FastAPI

https://stackoverflow.com/questions/69138537/uvicorn-fastapi-python-run-both-http-and-https

Create a digitalocean droplet with public IP. 

Make your domain point to digitalocean nameserver. Now, from digitalocean, create a domain with same setup.

Inside the DO domain, now you can add different records.

Add an A record, with api (subdomain) and point it to the new droplet public IP.

We can temporarily, run the app inside tmux in detached mode.

Now, we need to add SSL.

reference:
https://dev.to/knowbee/how-to-setup-secure-subdomains-using-nginx-and-certbot-on-a-vps-4m8h
https://dev.to/rajshirolkar/fastapi-over-https-for-development-on-windows-2p7d

sudo apt install -y certbot

sudo certbot certonly -d api.reee.uk

choose Spin up a temporary webserver (standalone) and continue, should have certificates.

Auto-renewal (test):

sudo systemctl status certbot.timer

sudo certbot renew --dry-run

Transfering MongoDB database from one server to another

Install MongoDB [ubuntu 20]:

https://linuxhint.com/install_mongodb_ubuntu_20_04/

sudo apt update

sudo apt upgrade

sudo apt install mongodb

sudo systemctl status mongodb

start:
sudo systemctl start mongodb

stop:
sudo systemctl stop mongodb

restart:
sudo systemctl restart mongodb



In old server,
mongodump --db DataBaseName

A dump folder will be created containing the database files.

In new server,
mongorestore --db DataBaseName /path/to/DataBaseName