SSH Cheat Sheet

This sheet goes along with this SSH YouTube tutorial

Login via SSH with password (LOCAL SERVER)

ssh brad@192.168.1.29

Create folder, file, install Apache (Just messing around)

mkdir test

cd test

touch hello.txt

sudo apt-get install apache2

Generate Keys (Local Machine)

ssh-keygen

Add Key to server in one command

cat ~/.ssh/id_rsa.pub | ssh brad@192.168.1.29 "mkdir -p ~/.ssh && chmod 700 ~/.ssh && cat >>  ~/.ssh/authorized_keys

Create & copy a file to the server using SCP

touch test.txt

scp ~/test.txt brad@192.168.1.29:~

DIGITAL OCEAN

Create account -> create droplet

Create Keys For Droplet (id_rsa_do)

ssh-keygen -t rsa

Add Key When Creating Droplet

Try logging in

ssh root@doserver

If it doesn't work

ssh-add ~/.ssh/id_rsa_do

(or whatever name you used)

Login should now work

ssh root@doserver

Update packages

sudo apt update

sudo apt upgrade

Create new user with sudo

adduser brad

id brad

usermod -aG sudo brad

id brad

Login as brad

ssh brad@doserver

We need to add the key to brads .ssh on the server, log back in as root

ssh root@doserver

cd /home/brad

mkdir .ssh

cd .ssh

touch authorized_keys

sudo nano authorized_keys

(paste in the id_rsa_do.pub key, exit and log in as brad)

Disable root password login

sudo nano /etc/ssh/sshd_config

Set the following

PermitRootLogin no

PasswordAuthentication no

Reload sshd service

sudo systemctl reload sshd

Change owner of /home/brad/* to brad

sudo chown -R brad:brad /home/brad

May need to set permission

chmod 700 /home/brad/.ssh

Install Apache and visit ip

sudo apt install apache2 -y

Github

Generate Github Key(On Server)

ssh-keygen -t rsa

(id_rsa_github or whatever you want)

Add new key

ssh-add /home/brad/.ssh/id_rsa_github

If you get a message about auth agent, run this and try again

eval `ssh-agent -s`

Clone repo

git clone git@github.com:bradtraversy/react_otka_auth.git

Install Node

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

sudo apt-get install -y nodejs

Install Dependencies

npm install

Start Dev Server and visit ip:3000

npm start

Build Out React App

npm run build

Move static build to web server root

sudo mv -v /home/brad/react_otka_auth/build/* /var/www/html