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Running on an Existing Kubernetes Cluster on Cloud.ru

Prerequisites

  • Kubernetes cluster on Cloud.ru, version range v1.20 ~ v1.23.

Update cluster configurations

  • Add --cloud-provider=external to kube-controller-manager and kube-apiserver config

kube-apiserver and kube-controller-manager MUST NOT specify the --cloud-provider flag (or specify --cloud-provider=external). This ensures that it does not run any cloud specific loops that would be run by cloud controller manager.

  • Add --cloud-provider=external to kubelet on each node

kubelet MUST run with --cloud-provider=external. This is to ensure that the kubelet is aware that it must be initialized by the cloud controller manager before it is scheduled any work.

Install Cloud Provider for Cloud.ru

  • Create the cloud-config secret in Kubernetes cluster

Create the cloud-config file according to cloud-config in master node or control-plane, see Cloud.ru Controller Manager Configurations for configurations description.

Use the following command create cloud-config secret:

kubectl create secret -n kube-system generic cloud-config --from-file=./cloud-config
  • Create RBAC resources
kubectl apply -f  https://raw.githubusercontent.com/kubernetes-sigs/cloud-provider-cloudru/master/manifests/rbac-cloudru-cloud-controller-manager.yaml
  • Install the Cloud.ru Provider Manager
kubectl apply -f  https://raw.githubusercontent.com/kubernetes-sigs/cloud-provider-cloudru/master/manifests/cloudru-cloud-controller-manager-deployment.yaml
  • Check the running status
# kubectl get pod -n kube-system | grep cloudru-cloud-controller-manager
cloudru-cloud-controller-manager-5f4b7995fc-s6b7p   1/1     Running   0          2m36s

When the status of Pod cloudru-cloud-controller-manager is running, the installation is successful.

What's next

Refer to Usage Guide for usage examples.