A stack update allows you to modify the resources
that the VM-Series Auto Scaling template firewall template deploys.
Instead of deleting your existing deployment and redeploying the
solution, use the stack update to modify launch configuration parameters.
You
can modify the AWS instance type, the key pair for your auto scaling
groups, and the APi key associated with the adminstrative user account
on the firewall.
When
you deploy the VM-Series Auto Scaling template, the auto scaling
groups and the launch configuration are automatically created for
you. The launch configuration is a template that an auto scaling
group uses to launch EC2 instance, and it specifies parameters such
as the instance type, the key pair for your auto scaling group,
or the API key associated with the administrative user account on
the firewall.
For critical applications,
perform a stack update during a maintenance window.
You
can update your stack directly or create
change sets. The
workflow in this document takes you through the manual stack update.