DevOps on AWS cheatsheet

gist0.md

Cheatsheet for the "DevOps on AWS session".

Important links:

• https://zaat.to/feedback Your feedback is important
• https://zaat.to/DevOPS the article of which the session based on.
• https://zaat.to/session0 Session slides

Lists of command we used in the session:

Connectiong to the instance:

chmod 400 path/file.pem // to make the file.pem readonly ssh -i filename.pem user@domain_NameORIpORPublic_DNS // to ssh to the instance

Installing/Configuring Nginx

sudo apt install nginx nginx -v // to make sure all is good, we used "1.8"

Reading Nginx access logs
cat /var/log/nginx/access.log // can be changed in main configuration file.

Directoy of Nginx configuration.
/etc/nginx/nginx.conf // main configuration, applies to all subsevers by default.
/etc/nginx/sites-enabled/default // default ngnix server configuration
To edit sudo nano /path
To view cat /path

Reloading nginx after changing configuration:
sudo service nginx reload //if you got no message back it means it's ok.

Let's deploy/serve apps. Installing node and pm2.

Installing node 12LTS
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
sudo apt-get install -y nodejs

Installing pm2
sudo npm -g install pm2

Add proxy server in Nginx:

server{
 server_name example.com
 location /{
   proxy_pass http://127.0.0.1:3000 #e.g. we have a localhost server running 1t port 3000
 } 
}

Adding encryption layer

Intalling certbot
sudo snap install --classic certbot

Running certbot
sudo certbot --nginx // we have to indicate our defualt server first time only

For Renewing licencse, adding domian names, or cnames in configuration
certbot