Cluster page in the Kubernetes view

The Cluster page is designed to provide capacity management insights for the Kubernetes cluster. Each page contains additional tabs, each of which presents capacity and efficiency KPIs related to the resources relevant for the analyzed entity. By default, some columns are hidden. You can show or hide columns using the action menuthat is located next to the table title.

Capacity

The Capacity tab is designed to provide a summary of the most important KPIs for managing capacity of Kubernetes clusters.

Column

Description

Cluster

Name of the cluster. Clicking on one of the clusters in this column takes you to the Cluster Details page in the Kubernetes view.

Pod #

Number of pods in the cluster.

Spare Pods

Estimated number of residual capacity in terms of additional pods that can be scheduled. This considers the average size of existing pods in the cluster.

Days To Saturation

Estimated number of days before one of the resources (CPU, Memory or Storage) of the cluster breaches the configured warning threshold. If the resource usage has already exceeded thresholds, it displays Saturated. 

CPU#Number of CPU cores currently configured for the Cluster.
CPU Request [cores]Requested CPU cores for the cluster. It is the sum of the CPU request of the containers running in this cluster. CPU request of a container is the amount of CPU that the system will guarantee for a container.
CPU Limit [cores]

CPU Limit of the cluster. It is the sum of the CPU limit of the containers running in this cluster. CPU limit of a container is the maximum amount of CPU that the container is allowed to use.

CPU Used [cores]Total CPU used by the cluster expressed in cores.

CPU Used vs Capacity [%]

Percentage of CPUs actually used with respect to CPU capacity (number of CPUs).

CPU Request vs Capacity [%]

Percentage of CPUs requested with respect to CPU capacity (number of CPUs).

CPU Used vs Limit [%]Percentage of CPU used with respect to CPU limit.
CPU Limit vs Capacity [%]Percentage of CPU limit with respect to CPU capacity (number of CPUs).
Memory [GB]Total memory configured for the cluster.
Mem Limit [GB]Memory Limit of the cluster. It is the sum of the memory limit of the containers running in this cluster. Memory limit of a container is the maximum amount of memory that the container is allowed to use.
Mem Request [GB]

Requested memory for the cluster. It is the sum of the memory request of the containers running in this cluster. Memory request of a container is the amount of memory that the system will guarantee for a container.

Mem Used vs Capacity [%]

Percentage of memory actually used with respect to memory capacity (total memory).

Mem Real Used vs Capacity [%]

Percentage of real memory used with respect to memory capacity (total memory).

Mem Request vs Capacity [%]

Percentage of memory requested with respect to memory capacity (total memory).

Mem Real Used vs Limit [%]

Percentage of real memory used with respect to memory limit.

Mem Limit vs Capacity [%]

Percentage of memory limit with respect to memory capacity (total memory).

File System [GB]Total file system configured for the cluster.

File System Used vs Capacity [%]

Percentage of file system actually used with respect to file system capacity (total file system).

Pod # vs Pod Max [%]

Percentage of pod with respect to the maximum number of pods configured for this cluster.

Bottleneck Resource

Name of the resource that has either saturated or will saturate in the next 90 days. Bottleneck resource can be CPU, Memory, or Storage.

CPU

The CPU tab presents the most important metrics related to the CPU.

Column name

Meaning

Cluster

Name of the cluster. Clicking on one of the clusters in this column takes you to the Cluster Details page in the Kubernetes view.

CPU #

Number of CPU cores currently configured for the cluster.

CPU Used [cores]Total CPU used by the cluster expressed in cores.
CPU Request [cores]Requested CPU cores for the cluster. It is the sum of the CPU request of the containers running in this cluster. CPU request of a container is the amount of CPU that the system will guarantee for a container.
CPU Limit [cores]

CPU Limit of the cluster. It is the sum of the CPU limit of the containers running in this cluster. CPU limit of a container is the maximum amount of CPU that the container is allowed to use.

CPU Used vs Request [%]

Percentage of CPU used with respect to the CPU request.

CPU Used vs Capacity [%]

Percentage of CPUs actually used with respect to CPU capacity (number of CPUs).

CPU Request vs Capacity [%]Percentage of CPUs requested with respect to CPU capacity (number of CPUs).
CPU Used vs Limit [%]Percentage of CPU used with respect to the CPU limit.
CPU Limit vs Capacity [%]Percentage of CPU limit with respect to CPU capacity (number of CPUs).

CPU Overcommitment [%]

Percentage of CPU limit with respect to the CPU capacity (number of CPUs).

Bottleneck

Name of the resource that has either saturated or will saturate in the next 90 days.

Memory

The Memory tabs presents the key metrics related to the memory. 

Column name

Meaning

Cluster

Name of the cluster. Clicking on one of the clusters in this column takes you to the Cluster Details page in the Kubernetes view.

Memory [GB]

Total memory configured for the cluster.

Mem Used [GB]

Memory used by the cluster.

Mem Real Used [GB]Real memory used by the cluster excluding buffer cache and slab memory.

Mem Request [GB]

Requested memory for the cluster. It is the sum of the memory request of the containers running in this cluster. Memory request of a container is the amount of memory that the system will guarantee for a container.

Mem Limit [GB]

Memory Limit of the cluster. It is the sum of the memory limit of the containers running in this cluster. Memory limit of a container is the maximum amount of memory that the container is allowed to use.

Mem Used vs Request [%]

Percentage of memory used with respect to memory request.

Mem Real Used vs Request [%]

Percentage of real memory used with respect to memory capacity (total memory).

Mem Used vs Capacity [%]

Percentage of memory used with respect to memory capacity (total memory).

Mem Request vs Capacity [%]

Percentage of memory request with respect to memory capacity (total memory).

Mem Real Used vs Limit [%]

Percentage of real memory used with respect to memory limit.

Mem Limit vs Capacity [%]

Percentage of memory limit with respect to memory capacity (total memory).

Mem Overcommitment [%]

Percentage of memory limit with respect to memory capacity (total memory).

Bottleneck

Name of the resource that has either saturated or will saturate in the next 90 days.

Storage

The Storage tabs presents the key metrics related to the storage.

Since in Kubernetes the persistent volumes can be requested only from the cluster, the cluster tab is the only one with this subsection. Since the persistent volume management is still at the early stages of the developments by Kubernetes, the only relevant information available up to now are the following.

Column name

Meaning

Cluster

Name of the cluster. Clicking on one of the clusters in this column takes you to the Cluster Details page in the Kubernetes view.

Number of PV

Number of persistent volumes.

PV Capacity [GB]

Storage capacity aggregated across all of the configured persistent volumes.

PV Allocated [GB]

Storage allocated space aggregated across all of the configured persistent volumes.

PV Free [GB]

Storage free space aggregated across all of the configured persistent volumes.

PV Allocated vs Capacity [%]

Percentage of storage allocated with respect to capacity.


Detailed information about a specific cluster

After you click on the cluster in the Cluster column, the Cluster Details page is displayed. You can use the sorting and filtering options on the page to find a specific cluster. 

Section or PanelDescription
General details section

General details, such as cluster name and type are displayed. The type is Kubernetes - Cluster.

Related Information panel

Clicking the links in the Related Information panel displays the other information such as nodes of the cluster and image analysis.

Summary tab

A quick graphical summary of the CPU, memory, and storage utilization, and pod number of the cluster. Core metrics for the selected entity are displayed as analysis charts, depending on available data.

Configuration Details tabThe configuration matrix for the selected cluster. 

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