This section outlines new features implemented in the Cluster release 12.7.0 that is introduced in the Container Cloud release 2.23.1.
MKE patch release update¶
Updated the Mirantis Kubernetes Engine (MKE) patch release from 3.5.5 to 3.5.7. The MKE update occurs automatically when you update your managed cluster.
Automatic upgrade of Ceph from Octopus to Pacific¶
Upgraded Ceph major version from Octopus 15.2.17 to Pacific 16.2.11 with an automatic upgrade of Ceph components on existing managed clusters during the Cluster version update.
Since Ceph Pacific, while mounting an RBD or CephFS volume, CSI
drivers do not propagate the
777 permission on the mount path.
Two Ceph Managers by default for HA¶
Increased the default number of Ceph Managers deployed on a Ceph cluster to two, active and stand-by, to improve fault tolerance and HA.
On existing clusters, the second Ceph Manager deploys automatically after a managed cluster update.
Mirantis recommends labeling at least 3 Ceph nodes with the
role that equals the default number of Ceph nodes for the
In such configuration, one back-up Ceph node will be available to redeploy
a failed Ceph Manager in case of a server outage.
Bond interfaces monitoring¶
Implemented monitoring of bond interfaces for clusters based on bare metal. The number of active and configured slaves per bond is now monitored with the following alerts raising in case of issues:
Calculation of storage retention time using OpenSearch and Prometheus panels¶
Implemented the following panels in the Grafana dashboards for OpenSearch and Prometheus that provide details on the storage usage and allow calculating the possible retention time based on provisioned storage and average usage:
Cluster > Estimated Retention
Resources > Disk
Resources > File System Used Space by Percentage
Resources > Stored Indices Disk Usage
Resources > Age of Logs
Cluster > Estimated Retention
Resources > Storage
Resources > Strage by Percentage
HA setup for ‘iam-proxy’ in StackLight¶
Implemented deployment of two
iam-proxy instances for the StackLight HA
setup that ensures access to HA components if one
fails. The second
iam-proxy instance is automatically deployed during
cluster update on existing StackLight HA deployments.
Log forwarding to third-party systems using Fluentd plugins¶
Added the capability to forward logs to external Elasticsearch and OpenSearch
servers as the
fluentd-logs output. This enhancement also expands existing
configuration options for log forwarding to syslog.
logging.externalOutputs that deprecates
enables you to configure any number of outputs with more configuration
‘MCC Applications Performance’ Grafana dashboard for StackLight¶
Implemented the MCC Applications Performance Grafana dashboard that provides information on the Container Cloud internals work based on Golang, controller runtime, and some custom metrics. You can use it to verify performance of applications and for troubleshooting purposes.