Infrastructure

PaaS runs on Kubernetes clusters. Kubernetes clusters are sets of node machines running containerized applications. One of the primary advantages of Kubernetes clusters is that they automatically manage your cluster to match the configured desired state.

Check out the subsections below to get an idea of what the Cockpit displays for you regarding Clusters.

Kubernetes flow

Let’s say you deploy your application with the desired state of having 4 nodes of your application running. If 1 of the nodes crashes, we see just 3 nodes are active, so we add 1 more to meet the desired state.

k8s flow

Select desired cluster

Select your desired cluster from the dropdown menu at the top of the Cockpit.

select cluster id

Overview

The Infrastructure Overview section in the Cockpit displays information about the clusters you have available in your PaaS setup. There are typically production and integration clusters at a minimum, but each setup is different.

clusters overview

What info is displayed?

The tab display the following information:

  • Cloud provider (such as rke standing for Rancher Kubernetes)

  • Version

  • Number of nodes

  • Created on (when the cluster was created)

There is also a table that shows more detailed cluster information such as:

  • Name (the name of the cluster)

  • Version

  • External IP

  • Operating System (OS)

  • CPU usage in percentage

  • Memory usage in percentage

  • Age of the cluster

Events

The Infrastructure Events section in the Cockpit displays information about the events within the cluster. These events are objects that show you exactly what is occurring inside your cluster, such as scheduler decisions or why some pods are being evicted from a node.

You can select up to the last 7 days for this filter.

clusters select events

View events

  1. Select the Start and End date range.

  2. Optional If desired, select the Reason or specific event Object.

  3. Click Apply filters.

Distribution

The Infrastructure Distribution section in the Cockpit displays information what pods are running on what nodes for your PaaS project.

clusters distribution

View distribution

  1. If you want, click Hide System Resources to only display the distribution used by Magnolia only.

  2. Click Apply filters.

What info is displayed?

The following information is displayed:

  • The Node

  • The total available CPUs

  • The Used CPU in percentages

  • The Available memory in GB

  • The Used memory in percentages

If you want to see more details, click the plus icon to see:

  • The namespace

  • The name of the database or application

  • The number of CPU requests

  • The CPU usage against the available limit

  • The Memory requests

  • The Memory usage against the available limit

CPU

The Infrastructure CPU in the Cockpit displays information about CPUs for your PaaS project.

clusters cpu

View cluster CPU

  1. If you want, click Hide System Resources to only display the distribution used by Magnolia only.

  2. Click Apply filters.

What info is displayed?

The following information is displayed:

  • Total available CPU

  • Current Free CPU against the maximum available CPU

  • Free CPU over time

  • Total CPU reserved

  • Total CPU limit

  • Table breaking down CPU limits by node and type (app or database)

Memory

The Infrastructure Memory in the Cockpit displays information about memory for your PaaS project.

clusters memory

View memory

  1. If you want, click Show only Magnolia to only display the distribution used by Magnolia only.

  2. Click Apply filters.

What info is displayed?

The following information is displayed:

  • Total available Memory

  • Current Free Memory against the maximum available Memory

  • Free Memory over time

  • Total Memory reserved

  • Total Memory limit

  • Table breaking down Memory limits by node and type (app or database)

Storage

The Infrastructure Storage tab in the Cockpit displays information about storage for your PaaS project.

clusters storage

View storage

  1. If you want, click Hide System Resources to only display the distribution used by Magnolia only.

  2. Click Apply filters.

What info is displayed?

The following information is displayed:

  • Total available Storage

  • Total Storage PVC

  • Total system Storage

  • Table breaking detailed storage information around state, access modes, volume modes, capacity, and age.

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