This section outlines new features and enhancements introduced in the Cluster release 5.22.0.
MCR version update¶
Updated the Mirantis Container Runtime (MCR) version from 20.10.6 to 20.10.8 for the Container Cloud management, regional, and managed clusters on all supported cloud providers.
Metric Collector alerts¶
MCCLicenseExpirationMajor alerts that notify about Mirantis Container Cloud
license expiration in less than 10 and 30 days.
Improvements to StackLight alerting¶
Implemented the following improvements to StackLight alerting:
Enhanced Kubernetes applications alerting:
Reworked the Kubernetes applications alerts to minimize flapping, avoid firing during pod rescheduling, and to detect crash looping for pods that restart less frequently.
Removed the redundant
Enhanced the alert inhibition rules to reduce alert flooding.
Improved alert descriptions.
TelemeterClientHAFailedto separate alerts depending on the HA mode disabled or enabled.
Updated the description for
Node Exporter collectors¶
Disabled unused Node Exporter collectors and implemented the capability to
manually enable needed collectors using the
nodeExporter.extraCollectorsEnabled parameter. Only the following
collectors are now enabled by default in StackLight:
Automated Ceph LCM¶
Implemented full support for automated Ceph LCM operations using the
KaaSCephOperationRequest CR, such as addition or removal of Ceph OSDs and
nodes, as well as replacement of failed Ceph OSDs or nodes.
Ceph CSI provisioner tolerations and node affinity¶
Implemented the capability to specify Container Storage Interface (CSI)
provisioner tolerations and node affinity for different Rook resources.
Added support for the
mds keys in toleration rules.
Ceph KaaSCephCluster.status enhancement¶
fullClusterInfo section of the
resource with the following fields:
cephDetails- contains verbose details of a Ceph cluster state
cephCSIPluginDaemonsStatus- contains details on all Ceph CSIs