Kubernetes 101 : Changing resource requirements for pods on the fly through deployments

In our example we have a deployment with three replicas of the "nginx" pod.

Below is the Yaml file of our deployment:

We create our deployment using the below command:

The "default-priority" assigned to the "nginx" pods is defined as below:

We create our PriorityClass using the "kubectl apply" command.

If for example, we check the events and we notice that our "nginx" pods are running out of resources - maybe consumed by other high-priority pods -, we could increase for our deployment and its three "nginx" replicas the limit of the resources it can use as below:

  •   The memory to 256 MiB for example.
  •   The CPU cores to 200 millicores for example.
For that we could use the below command:


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