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

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Chapter 2 ■ Kubernetes on CoreOS on AWSTable 2-1. (continued)Configuration setting Description Default ValueworkerRootVolumeSize Disk size (GiB) for worker nodes. 30vpcIdID of existing VPC to create subnet in. Leave blank to createa new VPC.routeTableIdID of existing route table in existing VPC to attach subnet to.Leave blank to use the VPC's main route table.vpcCIDRCIDR for Kubernetes VPC. If vpcId is specified, must “10.0.0.0/16”match the CIDR of existing vpc.instanceCIDRCIDR for Kubernetes subnet when placing nodes in a “10.0.0.0/24”single availability zone (not highly-available) Leavecommented out for multi availability zone setting anduse the subnets section instead.subnetsKubernetes subnets with their CIDRs and availabilityzones. Differentiating availability zone for two or moresubnets result in high-availability (failures of a singleavailability zone won't result in immediate downtimes).controllerIPIP Address for the controller in Kubernetes subnet. When 10.0.0.50we have two or more subnets, the controller is placed inthe first subnet and controllerIP must be included in theinstanceCIDR of the first subnet. This convention willchange once CoreOS supports H/A controllers.serviceCIDR CIDR for all service IP addresses. “10.3.0.0/24”podCIDR CIDR for all pod IP addresses. “10.2.0.0/16”dnsServiceIPIP address of Kubernetes dns service (must be contained 10.3.0.10by serviceCIDR).kubernetesVersionVersion of hyperkube image to use. This is the tag for the v1.2.4_coreos.1hyperkube image repository.hyperkubeImageRepo Hyperkube image repository to use. quay.io/coreos/hyperkubeuseCalicoWhether to use Calico for network policy. When set to “true,” falsekubernetesVersion must also be updated to include aversion tagged with CN,I e.g. v1.2.4_coreos.cni.1.stackTags: Name AWS Tag for CloudFormation stack resources. “Kubernetes”stackTags: Environment: AWS Tag for CloudFormation stack resources. “Production”32
Chapter 2 ■ Kubernetes on CoreOS on AWSBy default one Kubernetes controller and one Kubernetes worker are launched. As an example, we shallmodify the number of Kubernetes workers to 3. Open cluster.yaml in the vi editor:sudo vi cluster.yamlSet workerCount to 3 as shown in Figure 2-9 and save the cluster.yaml file.Figure 2-9. Modifying cluster.yaml to set Worker Nodes to 3Customizing the cluster.yaml does not require the assets to be re-rendered, but if the user data files orthe stack template is modified, the cluster assets must be rerendered (we don’t need to re-render):kube-aws render33
Page 1 and 2: KubernetesManagementDesign Patterns
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Page 5 and 6: ■ CONTENTS AT A GLANCE■Part
Page 7 and 8: ■ CONTENTSSetting Up Cluster Para
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Page 11 and 12: ■ CONTENTSOvercommitting Resou
Page 13 and 14: ■ CONTENTSInstalling OpenShift
Page 15 and 16: About the Technical ReviewerMassimo
Page 17 and 18: ■ INTRODUCTIONpatterns are lan
Page 19 and 20: ■ INTRODUCTIONIn Chapter 3 we
Page 21 and 22: CHAPTER 1Kubernetes on AWSKubernete
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PART IIAdministration andConfigurat
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Chapter 6 ■ Using VolumesPodDocke
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Chapter 7 ■ Using ServicesAnother
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Chapter 7 ■ Using ServicesCreatin
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Chapter 7 ■ Using ServicesList th
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Chapter 8 ■ Using Rolling Updates
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Chapter 10 ■ Configuring Compute
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Chapter 11 ■ Using ConfigMapsIn t
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CHAPTER 12Using Resource QuotasIn C
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CHAPTER 13Using AutoscalingStarting
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CHAPTER 14Configuring LoggingLoggin
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Chapter 14 ■ Configuring Logging
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Docker Log FilesChapter 14 ■ Conf
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CHAPTER 15Using an HA Master with O
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Installing the Network ManagerChapt
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Chapter 16 ■ Developing a Highly
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■ INDEXClusters (cont.)configurat
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■ INDEXKubernetes (cont.)nodes, 6
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■ INDEXRoute 53 service (cont.)de
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