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Created September 14, 2021 04:26
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Setting up a Digital Ocean droplet for node.js

Get the $IP from Digital Ocean and use the same $USERNAME as your main computer.

ssh root@$IP
adduser $USERNAME
usermod -aG sudo $USERNAME
ufw allow OpenSSH
ufw enable
rsync --archive --chown=$USERNAME:$USERNAME ~/.ssh /home/$USERNAME

Then logout and log back in:

sudo apt update && sudo apt upgrade -y

Install and prepare Node:

curl -o- | bash
nvm install 12.18.3

Keep running with pm2, and pm2 on startup:

npm install -g pm2
sudo env PATH=$PATH:/home/kyle/.nvm/versions/node/v12.18.3/bin /home/kyle/.nvm/versions/node/v12.18.3/lib/node_modules/pm2/bin/pm2 startup systemd -u kyle --hp /home/kyle

Remove the init script using pm2 unstartup systemd.

Once you have an app you want to add, run:

pm2 start app.js
pm2 save

Install nginx:

sudo apt install -y nginx
sudo ufw allow 'Nginx Full'

Write this to .nginx replacing $DOMAIN and $PORT:

server {
        listen 80;
        server_name $DOMAIN www.$DOMAIN;

        location / {
                proxy_set_header   X-Forwarded-For $remote_addr;
                proxy_set_header   Host $http_host;
                proxy_pass         "http://localhost:$PORT";

Copy the config over:

sudo cp .nginx /etc/nginx/sites-available/$DOMAIN
sudo ln -s /etc/nginx/sites-available/$DOMAIN /etc/nginx/sites-enabled/
sudo systemctl reload nginx

Setup the DNS A record and install and configure Let's Encrypt:

sudo apt install -y certbot python3-certbot-nginx
sudo certbot --nginx -d $DOMAIN -d www.$DOMAIN
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