SSH & DevOps Crash Course Snippets

ssh.txt

# Login via SSH with password (LOCAL SERVER)
> ssh [email protected]

# Create folder, file, install Apache (Just messing around)
mkdir test
cd test
touch hello.txt
sudo apt-get install apache2

# Generate Keys
> ssh-keygen

# Add Key to server in one command
> cat ~/.ssh/id_rsa.pub | ssh [email protected] "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 [email protected]:~


DIGITAL OCEAN

# Create account->create droplet

# Create Keys
> ssh-keygen -t rsa
(id_rsa_do)

# 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

# Generate Github Key
> 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 [email protected]: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

# Finish Otka
> 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