On Failover ALB server enable Install/Update Mode. Wait for the software versions sync to complete.
If you see a version number of Nginx- Application Load Balancer Web Server, it means that it is already installed and you can skip the following steps and proceed to Step 3: Configure DNS
Click Install Nginx. Installing Nginx requires root privileges. Provide Root password and click OK.
Confirm Nginx is successfully installed by checking the version number.