You're reading from Kubernetes – An Enterprise Guide - Second Edition

Product typeBook

Published inDec 2021

PublisherPackt

ISBN-139781803230030

Edition2nd Edition

Concepts

Cloud Computing

Authors (2):

Marc Boorshtein

Scott Surovich

View More author details

Understanding the worker node components

Worker nodes, as the name implies, are responsible for running workloads. When we discussed the kube-scheduler component of the control plane, we mentioned that when a new Pod is scheduled, the kube-scheduler component will decide which node to run the Pod on. It does this using information that has been sent to it from the worker nodes. This information is constantly updated to help spread Pods around a cluster to utilize resources efficiently.

Each worker node has two main components, kubelet and kube-proxy:

kubelet

You may hear a worker node referred to as a kubelet. The kubelet is an agent that runs on all worker nodes, and it is responsible for running the actual containers.

kube-proxy

Contrary to the name, kube-proxy is not a proxy server at all. kube-proxy is actually responsible for routing network communication between a Pod and the network.

Container runtime

Each node also needs a container runtime. A container...

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Kubernetes – An Enterprise Guide - Second Edition

Published in: Dec 2021Publisher: PacktISBN-13: 9781803230030

Authors (2)

Marc Boorshtein

Marc Boorshtein has been a software engineer and consultant for 20 years and is currently the CTO (Chief Technology Officer) of Tremolo Security, Inc. Marc has spent most of his career building identity management solutions for large enterprises, U.S. Government civilian agencies, and local government public safety systems.
Read more about Marc Boorshtein

Scott Surovich

Scott Surovich has been involved in the industry for over 25 years and is currently the Global Container Engineering Lead at a tier 1 bank as the Global on-premises Kubernetes product owner architecting and, delivering cluster standards, including the surrounding ecosystem. His previous roles include working on other global engineering teams, including Windows, Linux, and virtualization.
Read more about Scott Surovich

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