Overview

Managed System Add-ons can be added to a cluster blueprint and be deployed on clusters. Once enabled in a blueprint, the required k8s software components and configuration are automatically deployed to the target clusters. Support and technical assistance is provided for the Managed Add-ons and Services.

Managed System Addons	Components	Supported Distros
Managed Storage	Rook-Ceph	Upstream k8s
Managed Storage	GlusterFS (Deprecated)	Upstream k8s
Ingress Controller	Ingress Nginx	All
Monitoring & Alerting	Prometheus	All
Monitoring & Alerting	Metrics Server	All
Monitoring & Alerting	Alert Manager	All
Secrets Store CSI Driver	Secret Store CSI driver + AWS Secrets Manager provider specific plugins	Amazon EKS

Managed Services¶

Managed Services are turnkey, high value integrations that can be based on either open source or purpose built software. Once enabled, the required k8s software components and configuration are automatically deployed to the target clusters. Support and technical assistance is provided for Managed Services.

Managed Services	Components	Supported Distros
Monitoring & Alerting	Prometheus	All
Monitoring & Alerting	Metrics Server	All
Policy Management	OPA Gatekeeper	All
Backup & Restore	Velero	All
Network Policy	Cilium	All

Mandatory Addons¶

The k8s Management Operator is selected by default and users are not allowed to disable this add-on. This is required for centralized management of Kubernetes clusters.

Optional Addons¶

Managed Storage¶

Managed Storage enables the Ceph/Rook storage addon, which can be deployed to your cluster(s) during provision to avail distributed storage systems. On selecting the check box, a wrench settings icon appears. Click on the icon to view the enablement of Rook Ceph Storage

Ingress Controller¶

Ingress controller, selected by default in the Controller, is a specialized load balancer for Kubernetes (and other containerized) environments. This specific add-on accepts traffic from outside the Kubernetes platform and load balance it to pods (containers) running inside the platform. It monitors the pods running in Kubernetes and automatically update the load‑balancing rules when pods are added or removed from a service

Monitoring & Alerting¶

Monitoring & Alerting, selected by default, collects the various metrics from different system services and generates alerts. This specific add-on helps to record real-time metrics in a time series database (allowing for high dimensionality), with real-time alerting. Users are allowed to customize the Monitoring & Alerting add-on. Click the Wrench icon of the Monitoring & Alerts and the Customize Prometheus Addons pane appears to the right

Customize Prometheus Add-On¶

Enabling Monitoring & Alerting Add-ons helps to update the controller dashboards of various metrics associated with clusters.

Kube State Metrics: Exposes Prometheus format metrics based on the current state of the Kubernetes resources and this component is selected by default. To provide your own Kube State Metrics, perform the following steps:
- Disable the Kube State Metrics component by clearing the checkbox
- Provide the Kubernetes Namespace where the Kube State Metrics has been deployed in the cluster
- Select the resource to discover Service or Pod
- Click Add Key-Value Labels to add one or more labels for discovering the Service or Pod
These information are collected and forwarded to the Time Series Database. Time Series Database (TSDB) is specifically for handling metrics and events or measurements that are time-stamped and these data change over time
Node Exporter: Exposes Prometheus format metrics based on the current state of the Kubernetes nodes and this metric is selected by default. A Prometheus Node Exporter fetch statistics from an application, converts those statistics into metrics, and expose them to the controller. To provide your own Node Exporter, perform the following steps:
- Disable the Node Exporter component by clearing the checkbox
- Provide the Kubernetes Namespace where the Node Exporter has been deployed in the cluster
- Select the resource to discover Service or Pod
- Click Add Key-Value Labels to add one or more labels for discovering the Service or Pod
Helm Exporter: Exposes helm release, chart, and version statistics in the controller. To provide your own Helm Exporter, perform the following steps:
- Disable the Helm Exporter component by clearing the checkbox
- Provide the Kubernetes Namespace where the Helm Exporter has been deployed in the cluster
- Select the resource to discover Service or Pod
- Click Add Key-Value Labels to add one or more labels for discovering the Service or Pod
Kube State Metrics, Node Exporter, and Helm Exporter plays a major role in exposing the metrics in the controller dashboard. Invalid data might break the dashboard.

Note

To disable a Prometheus Addon, clear the checkbox.

Prometheus Adapter: Prometheus Adapter is used for HPA (Horizontal Pod Autoscaler). Enabling this metric to use for automatically scaling workload up or down based on resource usage. In Kubernetes, the Horizontal Pod Autoscaler (HPA) can scale pods based on observed CPU utilization and memory usage
Metrics Server: Metrics Server provides metrics for resource utilization like CPU & Memory. This metric discovers all the nodes in the cluster and forwards the details for resource utilization

Important

Disable Prometheus Adapter and Metrics Server to deploy AKS clusters.

Resources Limits (Optional): Specify the number of resources a Container needs. Users can set the CPU and Memory Limits for the resources. The Kubelet enforces those limits so that the running container is not allowed to use more of the resource than the limit set for it

Dashboard Metrics

Click Save to apply all the changes made to the Monitoring & Alerting add-ons

Secrets Store CSI Driver¶

During the pod start/restart, Secrets Store CSI Driver communicates with the provider using gRPC to retrieve the secret content from the external Secrets Store specified in the SecretProviderClass custom resource. The AWS provider for the Secrets Store CSI Driver allows you to make secrets stored in Secrets Manager appear as files mounted in Kubernetes pods.

Important

Only AWS provider is currently supported

Click the Wrench icon to customize the CSI Driver parameters. Customize Secrets Store CSI Driver Addons window appears
Select the required parameters of the CSI Driver and close the window to save the changes. Rotation poll interval can be customized when 'Enable Secret Rotation' setting is selected, the default being 2 min

Managed System Add-Ons