659 B
659 B
Instances
Instances of a cluster app represent a common configuration problem.
Their configuration is mostly the same.
We'd like to focus on managing differences.
The DAM approach is to create overlays.
An overlay is just a sub-directory with another manifest file, and optionally more (or fewer) resources.
Example
Create a staging and production instance.
- The greetings from the web server will differ.
- In staging we'll enable a risky feature.
- Production will have a higher replica count because it takes public traffic.
mkdir -p $TUT_APP/staging
mkdir -p $TUT_APP/production