Overview

Provides a Terraform deployment for Azure illustrating Application Insights.

The intended audience is for internal applications that emit Application Insights telemetry.

NOTE: the private link part is not enabled as it requires feature enablement.

Parts

The main parts of this is a Virtual Machine along with a Bastion that uses your local ~/ssh/id_rsa.pub ssh credentials if they are there - otherwise it fails.

Once deployed, the cloud-config runs a script that emits an event and trace every 10 seconds.

The script isis here: app/sendAIEvent.sh

Deployment

While this makes use of Terraform, the tool Task - aka go-task to help with the commands

Requirements

This has only been tested in a WSL2 environment under Ubuntu 22.04

• Terraform
• Task - Task - aka go-task
• a ssh key pair as ~/.ssh/id_rsa

Run Task cli

If you run task from the ./terraform folder you will see what commands are available.

Choose a task to run
task: Available tasks for this project:
* apply:                   Apply terraform
* clean:                   Clean terraform
* enablePrivateLink:       Enable Private Link on azure
* init:                    Initialize terraform
* kill:                    force remove resources

Essentially

task apply

At this point, you can observe Application Insights or Log Analytics Custom Events and Traces -- these are called traces and customevent in Application Insights tables, but in Log Analytics they are AppTraces and AppCustomEvents.

task clean

This does a proper terraform destroy, clean state and lock files

task kill

For the impatient, this will delete the Azure Resource group and clean up terraform state and lock files

Network Configuration

using ipcalc:

➜  terraform git:(main) ✗ ipcalc 10.42.42.0/22  --s 256 256
Address:   10.42.42.0           00001010.00101010.001010 10.00000000
Netmask:   255.255.252.0 = 22   11111111.11111111.111111 00.00000000
Wildcard:  0.0.3.255            00000000.00000000.000000 11.11111111
=>
Network:   10.42.40.0/22        00001010.00101010.001010 00.00000000
HostMin:   10.42.40.1           00001010.00101010.001010 00.00000001
HostMax:   10.42.43.254         00001010.00101010.001010 11.11111110
Broadcast: 10.42.43.255         00001010.00101010.001010 11.11111111
Hosts/Net: 1022                  Class A, Private Internet

1. Requested size: 256 hosts
Netmask:   255.255.254.0 = 23   11111111.11111111.1111111 0.00000000
Network:   10.42.40.0/23        00001010.00101010.0010100 0.00000000
HostMin:   10.42.40.1           00001010.00101010.0010100 0.00000001
HostMax:   10.42.41.254         00001010.00101010.0010100 1.11111110
Broadcast: 10.42.41.255         00001010.00101010.0010100 1.11111111
Hosts/Net: 510                   Class A, Private Internet

2. Requested size: 256 hosts
Netmask:   255.255.254.0 = 23   11111111.11111111.1111111 0.00000000
Network:   10.42.42.0/23        00001010.00101010.0010101 0.00000000
HostMin:   10.42.42.1           00001010.00101010.0010101 0.00000001
HostMax:   10.42.43.254         00001010.00101010.0010101 1.11111110
Broadcast: 10.42.43.255         00001010.00101010.0010101 1.11111111
Hosts/Net: 510                   Class A, Private Internet

Needed size:  1024 addresses.
Used network: 10.42.40.0/22
Unused: