Refer to previous two posts to deploy a Rails app to Azure.

• Deploy Rails 7.2.1 + Sqlite3 App to Azure Using Kamal
• Deploy Rails 7.2.1 + Managed Postgresql App to Azure Using Kamal 2.1.1

This post is made for:

• Ruby: 3.3.5
• Rails: 8.0.0
• Kamal: 2.3.0

1. Load Balancer Setup

1. Sign into Azure
2. Search for Load Balancers and select it.
3. Select the load balancer for the VM running the Rails app.
4. Select Settings > Inbound NAT rules link in the left sidebar.
5. Click +Add
6. Create a new NAT inbound rule like below
   • 

2. Rails App

Setup the Rails like like the following.

2.1 config/environments/production.rb

config.force_ssl = true

2.2 config/deploy.yml

...
proxy:
  ssl: true
  host: yourdomain.com
...

2.3 Deploy and Check

1. Run kamal deploy
2. Check yourdomain.com