148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

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Chapter 1 ■ Kubernetes on AWSAfter all instances have been deleted, the elastic IP is released, and eventually the security groups andVPC are deleted as shown in Figure 1-31.Figure 1-31. Deleting instances, volumes, security groups, and VPCSubsequently, the cluster may be restarted if required./home/ec2-user/kubernetes/cluster/kube-up.shSummaryIn this chapter we discussed installing Kubernetes on AWS. The Amazon Linux AMI must be used as ithas the AWS CLI preinstalled. Too many VPCs must not be created prior to creating a Kubernetes cluster,as a new VPC is created when the cluster is created and having too many prior VPCs could make the VPCquota allocated to a user account to be exceeded. We spun up a Kubernetes cluster consisting of a singlemaster and three minions. In the next chapter we shall install Kubernetes on CoreOS, the Linux OS designedspecifically for containers.22
CHAPTER 2Kubernetes on CoreOS on AWSKubernetes is usually used with a cloud platform, as the hardware infrastructure required for a multi-nodeKubernetes cluster is best provisioned in a cloud environment. In Chapter 1 we used the kube-up tool to spinup a cluster without requiring any configuration.ProblemThe kube-up tool does not create a production-ready cluster. One of the limitations of kube-up is that it doesnot support CoreOS. Docker has to be installed, even though the Docker installation is preconfigured.SolutionDocker is installed out-of-the-box on CoreOS. The CoreOS tool kube-aws can be used to spin up aproduction-ready Kubernetes cluster on CoreOS nodes on EC2 without much configuration. The kubeawstool makes use of AWS CloudFormation to create a cluster of EC2 instances running CoreOS. AWSCloudFormation is a service to provision AWS resources such as EC2 instances, Auto Scaling Groups,and Elastic Load Balancing load balancers, all using a template. Using a single cluster configuration fileto provision an AWS CloudFormation for a Kubernetes cluster is a management design pattern. Thesame cluster template may be reused to provision other Kubernetes clusters. Figure 2-1 shows an AWSCloudFormation that consists of a Kubernetes Master node and three Kubernetes worker nodes, along withan Auto Scaling Group and a Launch Configuration.© Deepak Vohra 2017D. Vohra, Kubernetes Management Design Patterns, DOI 10.1007/978-1-4842-2598-1_223
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Page 5 and 6: ■ CONTENTS AT A GLANCE■Part
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Page 15 and 16: About the Technical ReviewerMassimo
Page 17 and 18: ■ INTRODUCTIONpatterns are lan
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PART IIAdministration andConfigurat
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CHAPTER 14Configuring LoggingLoggin
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148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

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