Install tools for a fresh Digital Ocean Ubuntu instance

init_ubuntu.sh

# Permissions 0644 for '/root/.ssh/id_rsa' are too open.
chmod 400 ~/.ssh/id_rsa
# Update apt-get
sudo apt-get update

# Enable firewall
sudo apt-get install ufw
sudo ufw disable
sudo ufw allow 22
sudo ufw allow 80
sudo ufw allow 443
sudo ufw enable

# Common cli tools
sudo apt-get install tree

# Install nvm + node
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
nvm install v12.2.0
nvm use v12.2.0
nvm alias default v12.2.0
npm i -g yarn pm2

# Install gvm + go
bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
sudo apt-get install binutils bison gcc make
gvm install go1.12.5 -B
gvm use go1.12.5 --default

# Postgres 9.5
sudo apt-get install postgresql postgresql-contrib
sudo -i -u postgres
psql
CREATE ROLE root WITH LOGIN;
ALTER ROLE root SUPERUSER;
\q
exit
psql postgres # Login with user root

#
sudo apt-get update
sudo apt-get install mysql-server
mysql_secure_installation

# Install nginx
sudo apt-get install nginx
sudo service nginx start

# Certbot auto
wget https://dl.eff.org/certbot-auto
chmod a+x ./certbot-auto
# Remove a certificate
./certbot-auto delete --cert-name example.com

# Make swap 4GB
# https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-16-04
sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo nano /etc/sysctl.conf
vm.swappiness=10
vm.vfs_cache_pressure=50

# FFMPEG
# TODO

# Coturn
# TODO
sudo turnserver -a -v -n --no-dtls --no-tls -u 0:0 -r 000

# Show all listening port
sudo lsof -i -n -P | more