DevOps: Puppet, Docker, and Kubernetes

Setting resource in nodes

Computing resource management is so important in any infrastructure. We should know our application well and preserve enough CPU and memory capacity in order to prevent running out of resources. In this section, we'll introduce how to manage node capacity in the Kubernetes nodes. Furthermore, we'll also describe how to manage pod computing resources.

Getting ready

Before you start managing computing resources, you should know your applications well in order to know the maximum resources they need. Before we start, check out the current node capacity using the kubectl command described in >Chapter 1, Building Your Own Kubernetes:

// check current node capacity
# kubectl get nodes -o json | jq '.items[] | {name: .metadata.name, ...