3.8.16

Important

If you previously disabled Ingress Controller to mitigate vulnerabilities, Mirantis recommends that following upgrade to MKE 3.8.16 you re-enable the component. For detailed information on how to do this, refer to Configure NGINX Ingress Controller.

Release date	Name	Highlights
2026-SEP-08	MKE 3.8.16	Support for fail_timeout and max_fails Nginx upstream server configurations in Interlock. Update to LDAP Sync Jobs table in MKE web UI to include targeted sync jobs alongside full sync jobs.

Important

Upgrading to MKE 3.8.16 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
  • [MKE-13838] “fail_timeout” and “max_fails” configuration Nginx support
  • [MKE-12873] Update to LDAP Sync Jobs table in MKE web UI
• 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-12030] MKE telemetry setting overrides key/value in daemon.json file
  • [FIELD-8002] Flag conflict causes worker nodes not to upgrade
• Major component versions
• Security information