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You're reading from  Getting Started with Kubernetes, Second Edition - Second Edition

Product typeBook
Published inMay 2017
PublisherPackt
ISBN-139781787283367
Edition2nd Edition
Tools
Kubernetes
Concepts
System Administration
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Author (1)
Jonathan Baier
Jonathan Baier
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Jonathan Baier

Jonathan Baier is an emerging technology leader living in Brooklyn, New York. He has had a passion for technology since an early age. When he was 14 years old, he was so interested in the family computer (an IBM PCjr) that he pored over the several hundred pages of BASIC and DOS manuals. Then, he taught himself to code a very poorly-written version of Tic-Tac-Toe. During his teenage years, he started a computer support business. Throughout his life, he has dabbled in entrepreneurship. He currently works as Senior Vice President of Cloud Engineering and Operations for Moody's corporation in New York.
Read more about Jonathan Baier

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DNS

DNS solves the issues seen with environment variables by allowing us to reference the services by their name. As services restart, scale out, or appear anew, the DNS entries will be updating and ensuring that the service name always points to the latest infrastructure. DNS is set up by default in most of the supported providers.

Note

If DNS is supported by your provider, but not set up, you can configure the following variables in your default provider config when you create your Kubernetes cluster:ENABLE_CLUSTER_DNS="${KUBE_ENABLE_CLUSTER_DNS:-true}"DNS_SERVER_IP="10.0.0.10" DNS_DOMAIN="cluster.local" DNS_REPLICAS=1

With DNS active, services can be accessed in one of two forms—either the service name itself, <service-name> or a fully qualified name that includes the namespace, <service-name>.<namespace-name>.cluster.local. In our examples, it would look similar to node-js-90 or node-js-90.default.cluster.local.

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Getting Started with Kubernetes, Second Edition - Second Edition
Published in: May 2017Publisher: PacktISBN-13: 9781787283367
© 2017 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Jonathan Baier

Jonathan Baier is an emerging technology leader living in Brooklyn, New York. He has had a passion for technology since an early age. When he was 14 years old, he was so interested in the family computer (an IBM PCjr) that he pored over the several hundred pages of BASIC and DOS manuals. Then, he taught himself to code a very poorly-written version of Tic-Tac-Toe. During his teenage years, he started a computer support business. Throughout his life, he has dabbled in entrepreneurship. He currently works as Senior Vice President of Cloud Engineering and Operations for Moody's corporation in New York.
Read more about Jonathan Baier

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