Kubernetes Cluster Detail Page

Contributors netapp-alavoie

The Kubernetes cluster detail page displays detailed information about your Kubernetes cluster.

The detail page is comprised of three distinct but linked landing pages showing cluster, node, and pod information. The "Resource Usage" section changes to show the details of the selected item (cluster, node, or pod). You can see the current page type and name at the top of the screen. The current page is shown in the following heirarchy: Site Name / Kubernetes / Cluster / Node / Pod. You can click any part of this "breadcrumb" trail to go directly to that specific page.

Page Breadcrumb

Cluster Overview

The cluster overview page provides useful information at a glance:

Annotated Cluster View

Node and Pod Counts

The Node/Pod counts at the top of the page show you the total number of nodes and pods in the cluster, as well as a breakdown of how many pods are currently alerting or pending.

Node and Pod Counts

Note It is possible that the three pod sub-counts (healthy, alerting, pending) can add up to more than the displayed total number of pods. This can happen because the pending count includes all pending pods, both unscheduled and scheduled (in other words, unattached and attached to nodes).

The Cluster "Wheel"

Cluster Wheel

The Cluster "Wheel" section provides node and pod health at a glance, which you can drill into for more information. If your cluster contains more nodes than can be displayed in this area of the page, you will be able to turn the wheel using the buttons available.

Alerting pods or nodes are displayed in red. "Warning" areas are displayed in orange. Pods that are unscheduled (that is, unattached) will display in the lower corner of the Cluster "Wheel".

Hovering over a pod (circle) or Node (bar) will extend the view of the node.

Expanded Node

Clicking on the pod or node in that view will zoom in to the expanded Node view.

Expanded Node View

From here, you can hover over an element to display details about that element. For example, hovering over the critical pod in this example displays details about that pod.

Critical Pod Information

You can view Filesystem, Memory, and CPU information by hovering over the Node elements.

Node Capacity and Allocation

Detail Section

Each page of the Kubernetes Explorer displays a set of usage graphs that may include CPU, Memory, and Storage. Below these graphs are summaries and lists of the top objects in each category, with links to underlying details. For example, Node shows pods and containers, Pod shows PVCs and related objects and containers, etc. The following illustration shows an example of the detailed information on a Node page:

Resource Usage Example

Resources experiencing alerts will show at the top of the lists. Click on the affected resource to drill into it for more detail.

A note about the gauges

The Memory and CPU gauges show three colors, since they show used in relation to both allocatable capacity and total capacity. Storage gauges only show two colors because they only show a single pair of values: used in relation to total.

Keep the following in mind when reading the gauges.

The dark blue band shows the amount used.

  • When viewed against the light blue band, the dark blue shows used as the % of allocatable amount. This matches the "% of allocatable" value shown (81 in the example below).

  • When viewed against the white background, the dark blue shows used as the % of total capacity. This matches the "% of capacity" value shown (63 in this example).

Gauge Numbers Explained