Release Notes
Considerations
A limitation in MKE 3.5.7 and MKE 3.5.8 can cause issues in clusters that deploy more than 120 nodes.
If you plan to run a cluster with more than 120 nodes, Mirantis strongly recommends that you upgrade to MKE 3.5.9. If, however, it is imperative that you run one of the affected MKE versions with 121+ nodes, contact Mirantis support to secure a workaround.
In upgrading to MKE 3.6.x, be aware that MKE 3.6.0 runs a version of etcd that is older than the version Mirantis includes with MKE 3.5.6. As such, MKE 3.5.6 and later can only be upgraded to MKE 3.6.1 or later.
The etcd component, by design, will not accept a downgrade of itself.
Kube-proxy in IPVS mode is inoperable when running MKE 3.5.4 or 3.5.5 on kernel version 5.11 or later. A workaround solution is available upon request.
Upgrading from one MKE minor version to another minor version can result in the downgrading of MKE middleware components. For more information, refer to the middleware versioning tables in the release notes of both the source and target MKE versions.
CentOS 8 entered EOL status as of 31-December-2021. For this reason, Mirantis no longer supports CentOS 8 for all versions of MKE. We encourage customers who are using CentOS 8 to migrate onto any one of the supported operating systems, as further bug fixes will not be forthcoming.