minikube Archives - scmGalaxy https://www.scmgalaxy.com/tutorials/tag/minikube/ A Platform for Software Engineers Sat, 27 Feb 2021 10:12:53 +0000 en-US hourly 1 https://wordpress.org/?v=7.1 Understanding the tools sets in kubernetes ecosystem https://www.scmgalaxy.com/tutorials/understanding-the-tools-sets-in-kubernetes-ecosystem/ https://www.scmgalaxy.com/tutorials/understanding-the-tools-sets-in-kubernetes-ecosystem/#respond Wed, 27 Jun 2018 14:05:57 +0000 http://www.scmgalaxy.com/tutorials/?p=5050 Kubernetes at Public Cloud Google Container Engine – Google Kubernetes Engine is a powerful cluster manager and orchestration system for […]

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Kubernetes at Public Cloud

  1. Google Container Engine – Google Kubernetes Engine is a powerful cluster manager and orchestration system for running your Docker containers.
  2. ECS – Amazon Elastic Container Service (Amazon ECS) is a highly scalable, fast, container management service that makes it easy to run, stop, and manage Docker containers on a cluster.
  3. EKS – Amazon Elastic Container Service for Kubernetes (Amazon EKS) makes it easy to deploy, manage, and scale containerized applications using Kubernetes on AWS.

Kubernetes cli tools

  1. kubectl – Main CLI tool for running commands and managing Kubernetes clusters.
  2. JSONPath – Syntax guide for using JSONPath expressions with kubectl.
  3. kubeadm – CLI tool to easily provision a secure Kubernetes cluster.
  4. kubefed – CLI tool to help you administrate your federated clusters.
  5. Minikube – This is the simplest way to get a Kubernetes cluster on your Mac or Windows machine.
  6. Kops – kops helps you create, destroy, upgrade and maintain production-grade, highly available, Kubernetes clusters from the command line. AWS (Amazon Web Services) is currently officially supported, with GCE in beta support , and VMware vSphere in alpha, and other platforms planned.

kubernetes config reference

  1. kubelet – The primary node agent that runs on each node. The kubelet takes a set of PodSpecs and ensures that the described containers are running and healthy.
  2. Container runtime – Container runtime is Docker engine which resides in each node
  3. kube-proxy – Can do simple TCP/UDP stream forwarding or round-robin TCP/UDP forwarding across a set of back-ends.

Cluster control plane (AKA master)

  1. kube-apiserver – REST API that validates and configures data for API objects such as pods, services, replication controllers.
  2. Cluster state store – All persistent cluster state is stored in an instance of etcd. This provides a way to store configuration data reliably.
  3. kube-controller-manager – Daemon that embeds the core control loops shipped with Kubernetes.
  4. kube-scheduler – Scheduler that manages availability, performance, and capacity.
  5. Federation – A single Kubernetes cluster may span multiple availability zones.
  6. federation-apiserver – API server for federated clusters.
  7. federation-controller-manager – Daemon that embeds the core control loops shipped with Kubernetes federation

Kubernetes Add ons

  1. DNS
  2. Ingress controller
  3. Heapster (resource monitoring)
  4. Dashboard (GUI)

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]]> https://www.scmgalaxy.com/tutorials/understanding-the-tools-sets-in-kubernetes-ecosystem/feed/ 0 Kubernetes minikube errors and Solutions https://www.scmgalaxy.com/tutorials/kubernetes-minikube-errors-and-solutions/ https://www.scmgalaxy.com/tutorials/kubernetes-minikube-errors-and-solutions/#respond Fri, 12 Jan 2018 06:34:01 +0000 http://www.scmgalaxy.com/tutorials/?p=4819 Error 1 – Error starting host:  Error getting state for host: machine does not exist Solutions Please use/install minikube in the […]

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Error 1 – Error starting host:  Error getting state for host: machine does not exist

<p style="font-weight: 400;">D:\kubernete>minikube-windows-amd64.exe start --kubernetes-version="v1.8.0" --vm</p>
<p style="font-weight: 400;">-driver="virtualbox" --alsologtostderr</p>
<p style="font-weight: 400;">W0110 <span data-term="goog_1571914274">12:16:04.517163</span>   10504 root.go:148] Error reading config file at C:\Users</p>
<p style="font-weight: 400;">\panan4\.minikube\config\config.json: open C:\Users\panan4\.minikube\config\conf</p>
<p style="font-weight: 400;">ig.json: The system cannot find the file specified.</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914275">12:16:04.528163</span>   10504 notify.go:109] Checking for updates...</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914276">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/k8s-minikube/storage-provisioner:v1.8.0" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/k8s-minikube/storage-provisioner:v1.8.0&source=gmail&ust=1515821717506000&usg=AFQjCNHilUJGRCqAxx0Naa3yTEDGQ9X2Dw">r.io/k8s-minikube/storage-provisioner:v1.8.0</a> at C:\Users\panan4\.minikube\cache\</p>
<p style="font-weight: 400;">images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717506000&usg=AFQjCNHwyTmXfOb8jcAGQbTDyIr_DuEirg">gcr.io</a>\k8s-minikube\storage-provisioner_v1.8.0</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914277">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.5" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.5&source=gmail&ust=1515821717506000&usg=AFQjCNFAVT9yppX_1usJ2E0YbShOwXUE9A">r.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.5</a> at C:\Users\panan4\.mi</p>
<p style="font-weight: 400;">nikube\cache\images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google_containers\k8s-dns-dnsmasq-nanny-amd64_1.14.5</p>
<p style="font-weight: 400;">Starting local Kubernetes v1.8.0 cluster...</p>
<p style="font-weight: 400;">Starting VM...</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914278">12:16:05.901354</span>   10504 cluster.go:74] Skipping create...Using existing ma</p>
<p style="font-weight: 400;">chine configuration</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914279">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google_containers/kubernetes-dashboard-amd64:v1.6.3" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google_containers/kubernetes-dashboard-amd64:v1.6.3&source=gmail&ust=1515821717507000&usg=AFQjCNERLC4qpuUBrUqm5OvSjac96pWNKw">r.io/google_containers/kubernetes-dashboard-amd64:v1.6.3</a> at C:\Users\panan4\.min</p>
<p style="font-weight: 400;">ikube\cache\images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google_containers\kubernetes-dashboard-amd64_v1.6.3</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914280">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google_containers/k8s-dns-kube-dns-amd64:1.14.5" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google_containers/k8s-dns-kube-dns-amd64:1.14.5&source=gmail&ust=1515821717507000&usg=AFQjCNFhurp_V-c-NFhO73j_Zjakc4fptw">r.io/google_containers/k8s-dns-kube-dns-amd64:1.14.5</a> at C:\Users\panan4\.minikub</p>
<p style="font-weight: 400;">e\cache\images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google_containers\k8s-dns-kube-dns-amd64_1.14.5</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914281">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google-containers/kube-addon-manager:v6.4-beta.2" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google-containers/kube-addon-manager:v6.4-beta.2&source=gmail&ust=1515821717507000&usg=AFQjCNEFsklfJPJCpLyEX7qsaLsvUDDRow">r.io/google-containers/kube-addon-manager:v6.4-beta.2</a> at C:\Users\panan4\.miniku</p>
<p style="font-weight: 400;">be\cache\images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google-containers\kube-addon-manager_v6.4-beta.2</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914282">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google_containers/k8s-dns-sidecar-amd64:1.14.5" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google_containers/k8s-dns-sidecar-amd64:1.14.5&source=gmail&ust=1515821717507000&usg=AFQjCNEOfewUFCow70i9iSK2lBFDahW47A">r.io/google_containers/k8s-dns-sidecar-amd64:1.14.5</a> at C:\Users\panan4\.minikube</p>
<p style="font-weight: 400;">\cache\images\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google_containers\k8s-dns-sidecar-amd64_1.14.5</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914283">12:16:05.901354</span>   10504 cache_images.go:290] Attempting to cache image: gc</p>
<p style="font-weight: 400;"><a href="http://r.io/google_containers/pause-amd64:3.0" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://r.io/google_containers/pause-amd64:3.0&source=gmail&ust=1515821717507000&usg=AFQjCNF2E15ZIwSbjHDnD4zxOcapo39PIQ">r.io/google_containers/pause-amd64:3.0</a> at C:\Users\panan4\.minikube\cache\images</p>
<p style="font-weight: 400;">\<a href="http://gcr.io/" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://gcr.io&source=gmail&ust=1515821717507000&usg=AFQjCNF--H_EnOHq-1gORX9rvCyL0guvAA">gcr.io</a>\google_containers\pause-amd64_3.0</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914284">12:16:05.911354</span>   10504 cache_images.go:78] Successfully cached all images</p>
<p style="font-weight: 400;">.</p>
<p style="font-weight: 400;">I0110 <span data-term="goog_1571914285">12:16:06.292552</span>   10504 cluster.go:83] Machine state:  Error</p>
<p style="font-weight: 400;">E0110 <span data-term="goog_1571914286">12:16:06.292552</span>   10504 start.go:150] Error starting host: Error getting s</p>
<p style="font-weight: 400;">tate for host: machine does not exist.</p>
<p style="font-weight: 400;"></p>
<p style="font-weight: 400;">Retrying.</p>
<p style="font-weight: 400;">E0110 <span data-term="goog_1571914287">12:16:06.292552</span>   10504 start.go:156] Error starting host:  Error getting</p>
<p style="font-weight: 400;">state for host: machine does not exist</p>
<p style="font-weight: 400;">================================================================================</p>
<p style="font-weight: 400;"></p>
<p style="font-weight: 400;">An error has occurred. Would you like to opt in to sending anonymized crash</p>
<p style="font-weight: 400;">information to minikube to help prevent future errors?</p>
<p style="font-weight: 400;">To opt out of these messages, run the command:</p>
<p style="font-weight: 400;">        minikube config set WantReportErrorPrompt false</p>
<p style="font-weight: 400;">================================================================================</p>

Solutions

Please use/install minikube in the c drive.

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