upgrading kubernetes operator/controller code

Question

wanted to get some advice /best practices on maintaining and upgrading operators. We have an operator based on operator-sdk framework. We are looking at day 2 use cases like upgrading our custom controller code. what are the best practices of upgrading the operators? How do you handle rollback if the upgrade operation fails? any pointers?

Answer 1

One option could be to use OLM ( Operator lifecycle manager ) it will enable you to deliver your operators with packaging mechanisms. OLM will help you with installation, versioning, upgrades and downgrades. It will also serve as a catalog of installed Operators in your cluster and a set of metadata about them.

You can read about the OLM's architecture in the documentation.