This section outlines new features implemented in the Cluster release 7.11.0 that is introduced in the Container Cloud release 2.21.0.

MKE and MCR patch release update

Updated the Mirantis Kubernetes Engine (MKE) version from 3.4.10 to 3.4.11 and the Mirantis Container Runtime (MCR) version from 20.10.12 to 20.10.13 for the Container Cloud management, regional, and managed clusters on all supported cloud providers, as well as for non Container Cloud based MKE cluster attachment.

MetalLB minor version update

Updated the MetalLB version from 0.12.1 to 0.13.4 for the Container Cloud management, regional, and managed clusters of all cloud providers that use MetalLB: bare metal, Equinix Metal with public and private networking, vSphere.

The MetalLB configuration is now stored in dedicated MetalLB objects instead of the ConfigMap object.

Enhanced etcd monitoring

Improved etcd monitoring by implementing the Etcd dashboard and etcdDbSizeCritical and etcdDbSizeMajor alerts that inform about the size of the etcd database.

Reference Application for workload monitoring

Implemented Reference Application that is a small microservice application that enables workload monitoring on non-MOSK managed clusters. It mimics a classical microservice application and provides metrics that describe the likely behavior of user workloads.

Reference Application contains a set of alerts and a separate Grafana dashboard to provide check statuses of Reference Application and statistics such as response time and content length.

The feature is disabled by default and can be enabled using the StackLight configuration manifest.

Ceph secrets specification in the Ceph cluster status

Added the miraCephSecretsInfo specification to KaaSCephCluster.status. This specification contains current state and details of secrets that are used in the Ceph cluster, such as keyrings, Ceph clients, RADOS Gateway user credentials, and so on.

Using miraCephSecretsInfo, you can create, access, and remove Ceph RADOS Block Device (RBD) or Ceph File System (CephFS) clients and RADOS Gateway (RGW) users.

Amazon S3 bucket policies for Ceph Object Storage users

Implemented the ability to create and configure Amazon S3 bucket policies between Ceph Object Storage users.