3.8.1

Release date	Name	Highlights
2025-JAN-07	MKE 3.8.1	The MKE 3.8.1 patch release focuses exclusively on CVE mitigation.

Important

Upgrading to MKE 3.8.1 from MKE 3.7.x can cause your containers to restart, due to the hash calculation rule that was introduced in Kubernetes 1.31. As such, Mirantis recommends that you use the phased in-place cluster upgrade method or the blue-green deployment upgrade method to avoid the simultaneous containers restarts that the automated in-place cluster upgrade method can cause to occur in all nodes.

• Enhancements
• Addressed issues
• Known issues
  • [MKE-10152] Upgrading large Windows clusters can initiate a rollback
  • [MKE-9699] Ingress Controller with external load balancer can enter crashloop
  • [MKE-8914] Windows Server Core with Containers images incompatible with GCP
  • [MKE-8814] Mismatched MTU values cause Swarm overlay network issues on GCP
  • [MKE-12030] MKE telemetry setting overrides key/value in daemon.json
  • [FIELD-7469] storage_expt_enabled set to true prevents kubelet start up
• Major component versions
• Security information