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.
In MKE 3.7.0 - 3.7.1, performance issues may occur with both cri-dockerd and dockerd due to the manner in which cri-dockerd handles container and ImageFSInfo statistics.
MKE 3.7.4 (discontinued)
MKE 3.7.4 was discontinued shortly after release due to issues encountered when upgrading to it from previous versions of the product.
MKE 3.7.3 current
The MKE 3.7.3 patch release focuses exclusively on CVE resolution. For detail on the specific CVEs addressed, refer to Security information.
Patch release for MKE 3.7 introducing the following key features:
Prometheus metrics scraped from Linux workers
Performance improvement to MKE image tagging API
Initial MKE 3.7.1 release introducing the following key features:
Support bundle metrics additions for new MKE 3.7 features
Added ability to filter organizations by name in MKE web UI
Increased Docker and Kubernetes CIS benchmark compliance
MetalLB supports MKE-specific loglevel
Improved Kubernetes role creation error handling in MKE web UI
Increased SAML proxy feedback detail
Upgrade verifies that cluster nodes have minimum required MCR
kube-proxy now binds only to localhost
Enablement of read-only rootfs for specific containers
Support for cgroup v2
Added MKE web UI capability to add OS constraints to swarm services
Added ability to set support bundle collection windows
Added ability to set line limit of log files in support bundles
Addition of search function to Grants > Swarm in MKE web UI
Initial MKE 3.7.0 release introducing the following key features:
ZeroOps: certificate management
ZeroOps: upgrade rollback
Prometheus memory resources
etcd event cleanup
Ingress startup options: TLS, TCP/UDP, HTTP/HTTPS
Additional NGINX Ingress Controller options
Setting for NGINX Ingress Controller default ports
Lameduck configuration options
Addition of referral chasing LDAP parameter
Kubernetes update to version 1.27.4
Go update to version 1.20.5.
RethinkDB update to version 2.4.3