Lecture content
A presentation about the web and web servers
Resources
- Recording VT19 (Youtube)
Demos - Apache
Resources
https://httpd.apache.org/docs/2.4/
Installing Apache2
- Install Apache
sudo apt-get update sudo apt-get install apache2 - Configure the firewall, use
sudo ufw app listto see the names of install servicessudo ufw allow 'Apache Full' sudo ufw allow OpenSSH sudo ufw enable sudo ufw status - Control Apache
- Apache status
systemctl status apache2 - Stop Apache service
sudo systemctl stop apache2 - Start Apache service
sudo systemctl start apache2 - Restart Apache, connections to the web server will be lost
sudo systemctl restart apache2 - Reload configuration, reload without dropping connections
sudo systemctl reload apache2 - Disable the Apache service to start up at boot
sudo systemctl disable apache2 - Re-enable the service to start up at boot
sudo systemctl enable apache2
- Apache status
Configure Apache 2
- Create the Directory Structure and permissions
sudo mkdir -p /var/www/jl222gk.devopslab.xyz/public_html sudo mkdir -p /var/www/test.jl222gk.devopslab.xyz/public_html sudo chown -R $USER:$USER /var/www/jl222gk.devopslab.xyz/public_html sudo chown -R $USER:$USER /var/www/test.jl222gk.devopslab.xyz/public_html sudo chmod -R 755 /var/www - Create Demo Pages for the sites
nano /var/www/jl222gk.devopslab.xyz/public_html/index.html<html> <head> <title>Welcome to jl222gk's page!</title> </head> <body> <h1>Success! jl222gk's page is working!</h1> </body> </html>nano /var/www/test.jl222gk.devopslab.xyz/public_html/index.html<html> <head> <title>Welcome to jl222gk's Test page!</title> </head> <body> <h1>Success! jl222gk's Test page is working!</h1> </body> </html>
- Create New Virtual Host Files
- Copy the default config
sudo cp /etc/apache2/sites-available/000-default.conf /etc/apache2/sites-available/jl222gk.devopslab.xyz.conf - Edit the config for the first site
sudo nano /etc/apache2/sites-available/jl222gk.devopslab.xyz.conf<VirtualHost *:80> ServerAdmin admin@jl222gk.devopslab.xyz ServerName jl222gk.devopslab.xyz ServerAlias www.jl222gk.devopslab.xyz DocumentRoot /var/www/jl222gk.devopslab.xyz/public_html ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> - Setup the second site by coping the first
sudo cp /etc/apache2/sites-available/jl222gk.devopslab.xyz.conf /etc/apache2/sites-available/test.jl222gk.devopslab.xyz.conf - Edit the config for the first site
sudo nano /etc/apache2/sites-available/test.jl222gk.devopslab.xyz.conf<VirtualHost *:80> ServerAdmin admin@test.jl222gk.devopslab.xyz ServerName test.jl222gk.devopslab.xyz ServerAlias www.test.jl222gk.devopslab.xyz DocumentRoot /var/www/test.jl222gk.devopslab.xyz/public_html ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost>
- Copy the default config
- Enable the new sites with
a2ensitesudo a2ensite jl222gk.devopslab.xyz.conf sudo a2ensite test.jl222gk.devopslab.xyz.conf - Disable the default site with
sudo a2dissite 000-default.conf - Restart Apache 2
sudo systemctl restart apache2
Nginx configuration
Resources
- http://nginx.org/en/docs/
- https://www.digitalocean.com/community/tutorials/understanding-nginx-http-proxying-load-balancing-buffering-and-caching
Demo - Getting started
Demo - Node.js web apps
Denna video visar hur man installerar node.js och kör igång en enkel node-applikation på en Ubuntu 18.04. Videon har ett litet abrupt slut då den är uppdelad i två delar.
Demo - Reversed proxy/Load balancer
För mer information om att konfigurerar nginx:n kolla denna artikel: https://www.digitalocean.com/community/tutorials/understanding-nginx-http-proxying-load-balancing-buffering-and-caching
