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![Cluster apiVersion: "cluster-api.k8s.io/v1alpha1" kind: Cluster metadata: name: fujisan spec: providerSpec: ... clusterNetwork: services: cidrBlocks: ["10.96.0.0/12"] pods: cidrBlocks: ["192.168.0.0/16"] serviceDomain: "cluster.local"](https://image.slidesharecdn.com/ossjapan-clusterapi-himaniagrawalgirikuncoro-190927045720/75/Using-Libvirt-with-Cluster-API-to-manage-baremetal-Kubernetes-10-2048.jpg)
Using Libvirt with Cluster API to manage baremetal Kubernetes
- 1. Creating a custom ClusterAPI Provider Himani Agrawal @himani_93 Giri Kuncoro @girikuncoro
- 2.
- 3. 70+ ways todeploy Kubernetes
- 4. What is missing? ➔Declarative, Kubernetes-style API ➔ Compatibility with tooling ➔ Cloud agnostic ➔ Single interface for infra/cluster
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- 6. Kubernetes Cluster Cluster API Reference: DeepDive: Cluster API KubeCon EU 2019
- 7. Declarative Config Kubernetes Cluster Cluster API Reference: DeepDive: Cluster API KubeCon EU 2019
- 8. Kubernetes Cluster Cluster API Declarative Config Reference: DeepDive: Cluster API KubeCon EU 2019
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- 10. Cluster apiVersion: "cluster-api.k8s.io/v1alpha1" kind: Cluster metadata: name:fujisan spec: providerSpec: ... clusterNetwork: services: cidrBlocks: ["10.96.0.0/12"] pods: cidrBlocks: ["192.168.0.0/16"] serviceDomain: "cluster.local"
- 11. Cluster API CRDs ClusterMachine
- 12. Machine apiVersion: "cluster-api.k8s.io/v1alpha1" kind: Machine metadata: name:kube-cp spec: providerSpec: vcpu: 2 ... versions: kubelet: 1.15.0
- 13. Cluster API CRDs ClusterMachine Machine Set
- 14. Cluster API CRDs ClusterMachine Machine Set Machine Deployment
- 15. Cluster API CRDs ClusterMachine Machine Set Machine Deployment Machine Class
- 16. Cluster API CRDs ClusterMachine Machine Set Machine Deployment Machine Class Pod Replica Set Deployment Storage Class
- 17. How Cluster APIworks? Controller Actuator KVM Baremetal apiVersion: "cluster-api.k8s.io/v1alpha1" kind: Machine metadata: name: kube-cp spec: providerSpec: vcpu: 2 versions: kubelet: 1.15.0 Machine CRD Machine
- 18. Provider Controller Manager ClusterController Machine Controller
- 19. Demo Picture Credits: AshleyMcNamara
- 20. Code func main() { mgr,_ := manager.New(cfg, opts) machineActuator, _ := machine.NewActuator(machine.ActuatorParams{ Client: mgr.GetClient(), }) apis.AddToScheme(mgr.GetScheme()) clusterapis.AddToScheme(mgr.GetScheme()) capimachine.AddWithActuator(mgr, machineActuator) mgr.Start(signals.SetupSignalHandler()) } cmd/manager/main.go
- 21. Code func init() { //AddToManagerFuncs is a list of functions to create controllers // and add them to a manager. AddToManagerFuncs = append(AddToManagerFuncs, func(m manager.Manager) error { return capimachine.AddWithActuator(m, &machine.Actuator{}) }) } pkg/controller/add_machine_controller.go
- 22. Code type LibvirtMachineProviderSpecSpec struct{ // Number of virtual CPU VCPU int `json:"vcpu"` // Amount of RAM in GBs MemoryInGB int `json:"memoryInGB"` // Image URL to be provisioned ImageURI string `json:"imageURI"` // UserData URI of cloud-init image UserDataURI string `json:"userDataURI"` } pkg/apis/libvirt/v1alpha1/libvirtmachineproviderspec_types.go
- 23. Code // CreateDomain connectsto libvirt daemon and creates a new domain // as per domainXML. func CreateDomain(domainXML string) error { ... } // DomainExists checks if the domain with the given name exists. func DomainExists(domainName string) bool { ... } // defineDomain returns the XML representation of the domain to be created. // Output of this func is passed into CreateDomain() to create a new domain. func defineDomain() string { ... } pkg/cloud/libvirt/domain.go
- 24. func (a *Actuator)Create() error { return libvirt.CreateDomain() } func (a *Actuator) Exists() (bool, error) { return libvirt.DomainExists() } func (a *Actuator) Delete() { ... } func (a *Actuator) Update() { ... } Code pkg/cloud/libvirt/actuators/machine/actuator.go
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- 26. ● Cluster APIv0.1.0 ● Kubebuilder v1.0.8 ● Kustomize v1.0.11 ● Kubectl v1.13 ● Minikube v1.2.0 Dependency Versions
- 27. Discussion ● Cluster APIis super cool! ● Early work for production version
- 28. Getting Involved ➔ GithubRepo github.com/kubernetes-sigs/cluster-api ➔ Mailing List: kubernetes-sig-cluster-lifecycle https://groups.google.com/forum/#!forum/kubernetes-sig-clus ter-lifecycle ➔ Slack: #cluster-api https://kubernetes.slack.com/messages/C8TSNPY4T
- 29. Provider Implementations ● AWS,https://github.com/kubernetes-sigs/cluster-api-provider-aws ● Azure, https://github.com/kubernetes-sigs/cluster-api-provider-azure ● Baidu Cloud, https://github.com/baidu/cluster-api-provider-baiducloud ● Bare Metal, https://github.com/metal3-io/cluster-api-provider-baremetal ● DigitalOcean, https://github.com/kubernetes-sigs/cluster-api-provider-digitalocean ● Exoscale, https://github.com/exoscale/cluster-api-provider-exoscale ● GCP, https://github.com/kubernetes-sigs/cluster-api-provider-gcp ● IBM Cloud, https://github.com/kubernetes-sigs/cluster-api-provider-ibmcloud ● OpenStack, https://github.com/kubernetes-sigs/cluster-api-provider-openstack ● Talos, https://github.com/talos-systems/cluster-api-provider-talos ● Tencent Cloud, https://github.com/TencentCloud/cluster-api-provider-tencent ● vSphere, https://github.com/kubernetes-sigs/cluster-api-provider-vsphere
- 30. API Adoption Following arethe implementations managed by third-parties adopting the standard cluster-api and/or machine-api being developed here. ● Kubermatic machine-controller, https://github.com/kubermatic/machine-controller/tree/master ● Machine API Operator, https://github.com/openshift/machine-api-operator/tree/master ● Machine-controller-manager, https://github.com/gardener/machine-controller-manager/tree/cluster-api
- 31. References ● https://kccna18.sched.com/event/Greh ● https://kccnceu19.sched.com/event/MPkR ●https://blogs.vmware.com/cloudnative/2019/03/14/what-and-why-of-cluster-api/ ● https://blog.heptio.com/the-kubernetes-cluster-api-de5a1ff870a5 ● https://github.com/kubernetes-sigs/cluster-api ● https://cluster-api.sigs.k8s.io/
- 32.