This section outlines new features and enhancements introduced in the Cluster release 6.12.0.

Alert inhibition rules

Implemented alert inhibition rules to provide a clearer view on the cloud status and simplify troubleshooting. Using alert inhibition rules, Alertmanager decreases alert noise by suppressing dependent alerts notifications. The feature is enabled by default. For details, see Alert dependencies.

Integration between Grafana and Kibana

Implemented integration between Grafana and Kibana by adding a View logs in Kibana link to the majority of Grafana dashboards, which allows you to immediately view contextually relevant logs through the Kibana web UI.

Telegraf alert

Implemented the TelegrafGatherErrors alert that raises if Telegraf fails to gather metrics.

Learn more


Configuration of Ironic Telegraf input plugin

Added the ironic.insecure parameter for enabling or disabling the host and chain verification for bare metal Ironic monitoring.

Automatically defined cluster ID

Enhanced StackLight to automatically set clusterId that defines an ID of a Container Cloud cluster. Now, you do not need to set or modify this parameter manually when configuring the sf-notifier and sf-reporter services.

Cerebro support for StackLight

Enhanced StackLight by adding support for Cerebro, a web UI that visualizes health of Elasticsearch clusters and allows for convenient debugging. Cerebro is disabled by default.

Ceph maintenance label

Implemented the maintenance label to set for Ceph during a managed cluster update. This prevents Ceph rebalance leading to data loss during a managed cluster update.

RGW check box in Container Cloud web UI

Implemented the Enable Object Storage checkbox in the Container Cloud web UI to allow enabling a single-instance RGW Object Storage when creating a Ceph cluster as described in Add a Ceph cluster.


Enhanced Ceph to support RADOS Gateway (RGW) high availability. Now, you can run multiple instances of Ceph RGW in active/active mode.

StackLight proxy

Added proxy support for Alertmanager, Metric collector, Salesforce notifier and reporter, and Telemeter client. Now, these StackLight components automatically use the same proxy that is configured for Container Cloud clusters.


Proxy handles only the HTTP and HTTPS traffic. Therefore, for clusters with limited or no Internet access, it is not possible to set up Alertmanager email notifications, which use SMTP, when proxy is used.


Due to a limitation, StackLight fails to integrate with an external proxy with authentication handled by a proxy server. In such cases, the proxy server ignores the HTTP Authorization header for basic authentication passed by Prometheus Alertmanager. Therefore, use proxies without authentication or with authentication handled by a reverse proxy.