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Getting Started with Kubernetes

Getting Started with Kubernetes

By : Jonathan Baier, White
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Getting Started with Kubernetes

Getting Started with Kubernetes

By: Jonathan Baier, White

Overview of this book

Kubernetes has continued to grow and achieve broad adoption across various industries, helping you to orchestrate and automate container deployments on a massive scale. Based on the recent release of Kubernetes 1.12, Getting Started with Kubernetes gives you a complete understanding of how to install a Kubernetes cluster. The book focuses on core Kubernetes constructs, such as pods, services, replica sets, replication controllers, and labels. You will understand cluster-level networking in Kubernetes, and learn to set up external access to applications running in the cluster. As you make your way through the book, you'll understand how to manage deployments and perform updates with minimal downtime. In addition to this, you will explore operational aspects of Kubernetes , such as monitoring and logging, later moving on to advanced concepts such as container security and cluster federation. You'll get to grips with integrating your build pipeline and deployments within a Kubernetes cluster, and be able to understand and interact with open source projects. In the concluding chapters, you'll orchestrate updates behind the scenes, avoid downtime on your cluster, and deal with underlying cloud provider instability within your cluster. By the end of this book, you'll have a complete understanding of the Kubernetes platform and will start deploying applications on it.
Table of Contents (18 chapters)
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Scaling the cluster

As with PaaS versus hosted clusters, you have several options for scaling up your production Kubernetes cluster.

On GKE and AKS

When upgrading a GKE cluster, all you need to do is issue a scaling command that modifies the number of instances in your minion group. You can resize the node pools that control your cluster with the following:

gcloud container clusters resize [CLUSTER_NAME] \
--node-pool [POOL_NAME]
--size [SIZE]

Keep in mind that new nodes are created with the same configuration as the current machines in your node pool. When additional pods are scheduled, they'll be scheduled on the new nodes. Existing pods will not be relocated or rebalanced to the new nodes.

Scaling up the AKS cluster...

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