Upgrading from v1.1 to v1.2
In an effort to introduce new features whilst keeping the project maintainable,
cert-manager now only supports Kubernetes down to version
v1.16. This means
legacy manifests have now been removed. You can read more
In this release some features have been deprecated. Please read the version 1.2 release notes for more details and consider whether you are using any of these deprecated features before you proceed with the upgrade.
From here on you can follow the regular upgrade process.