Azure Classroomnotes 01/Jul/2023

Azure Networking contd

Proxy Server: This is used to filter out the outbound traffic from your network to external
Reverse Proxy: This is used to route/forward the inbound traffic into your servers
Load Balancer aim is to distribute traffic so that one server is not overloaded.
Load Balancers perform health checks
Load Balancers work at two layers
- Layer 4 Load Balancer:
  - This load balancer can forward the traffic based on port, ip address, protocol
- Layer 7 Load Balancer: This load balancer operates on layer 7 i.e. it has knowledge of ip,port,protocol, url
  - Path Based Routing
  - Host Name based routing
Azure Load Balancer: This is a service from azure to perform layer 4 load balancing
Azure Application Gateway: This is a service from azure to perform layer 7 load balancing

Create a vnet with two subnets
- web
- app
Create 2 ubuntu vms in web
- install apache server
  sudo apt update sudo apt install apache2 -y
- create a html page
  echo "<h1> Web </h1>" > /var/www/html/info.html
Create 2 ubuntu vms in app
- install apache server
  sudo apt update sudo apt install apache2 -y
- Create a html page
  echo "<h1> app </h1>" > /var/www/html/info.html

sudo apt update
sudo apt install apache2 -y
sudo mkdir /var/www/html/app
echo "<h1> app </h1>" > /var/www/html/app/info.html

sudo apt update
sudo apt install apache2 -y
sudo mkdir /var/www/html/admin
echo "<h1> admin </h1>" > /var/www/html/admin/info.html