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Merge pull request #16028 from infonova/document-some-breaking-changes 

Document breaking changes for serviceClusterIPRange and OpenStack with S3 state store
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Kubernetes Prow Robot 2023-10-25 22:23:37 +02:00 committed by GitHub
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docs/releases/1.27-NOTES.md
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@ -33,6 +33,10 @@ they would do so when the respective `topology` was set to `public`.
# Breaking changes
## OpenStack
* If storing the state in an S3 bucket, it is now required to either [deactivate gossip support](https://github.com/kubernetes/kops/issues/15684#issuecomment-1645384421) (`--dns=none`) or - for example - provide the credentials via cloud-init. Due to changes in [PR#15646](https://github.com/kubernetes/kops/pull/15646/files#diff-c1c852aea92883d3117fae99c1610c5cdcbc217f5aa3b340f23b5dd02e971d99L136-L145) the `S3_*` variables will not get passed on to the boot script of the [nodes anymore](https://github.com/kubernetes/kops/pull/15691). As a result the `kops-configuration.service` will throw an `EnvAccessKeyNotFound: failed to find credentials in the environment.` error and they will not join the cluster. Deactivating the gossip support will make the nodes contact the API servers for the bootstrap information.
## Other breaking changes
* Support for Kubernetes version 1.21 has been removed.

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@ -16,6 +16,10 @@
* The `kops get assets --copy` command no longer sets object-level public-read ACLs in the destination fileRepository.
## OpenStack
* If storing the state in an S3 bucket, it is now required to either [deactivate gossip support](https://github.com/kubernetes/kops/issues/15684#issuecomment-1645384421) (`--dns=none`) or - for example - provide the credentials via cloud-init. Due to changes in [PR#15646](https://github.com/kubernetes/kops/pull/15646/files#diff-c1c852aea92883d3117fae99c1610c5cdcbc217f5aa3b340f23b5dd02e971d99L136-L145) the `S3_*` variables will not get passed on to the boot script of the [nodes anymore](https://github.com/kubernetes/kops/pull/15691). As a result the `kops-configuration.service` will throw an `EnvAccessKeyNotFound: failed to find credentials in the environment.` error and they will not join the cluster. Deactivating the gossip support will make the nodes contact the API servers for the bootstrap information.
## Other breaking changes
* Support for Kubernetes version 1.22 has been removed.
@ -26,6 +30,8 @@
* RHEL-based distros will no longer have `wget`, `curl`, `python2`, and `git` packages installed. Install them with [hooks](/cluster_spec/#hooks) if needed.
* The [default IPv4 service cluster range](https://github.com/kubernetes/kops/pull/15866) is now `100.64.0.0/13`. As this was previously calculated from `nonMasqueradeCIDR` if `serviceClusterIPRange` was not explicitly set, it may be necessary to set it to this value ([the first 1/8](https://github.com/kubernetes/kops/pull/15866/files#diff-5e44add4b8da1d5b1c7119b6cc5a5f42a45c555332f51262162b29790e78f479L397-L404) of the `nonMasqueradeCIDR`).
# Deprecations
* Support for Kubernetes version 1.23 is deprecated and will be removed in kOps 1.29.