Upgrade an MKE installation

This topic describes how to upgrade to a later version of MKE.

Caution

You cannot deploy Kubernetes Ingress on a cluster after upgrading from MKE 3.2.6 to 3.3.0. Refer to the release notes for more information and a workaround. This issue does not impact non-upgrade 3.3.0 installations.

Review the mke-3-4-relnotes before upgrading for information that may be relevant to the upgrade process.

Plan to upgrade MCR to version 19.03.08 or later on every cluster node. Mirantis recommends that you schedule the upgrade for non-business hours to ensure minimal user impact.

Do not make changes to your MKE configuration while upgrading, as doing so can cause misconfigurations that are difficult to troubleshoot.