Importing Existing Kubernetes Clustersĭeploying and provisioning Kubernetes clusters is a helpful feature, but Rancher offers more. This allows you to create Kubernetes clusters tailored to your organization’s needs while avoiding vendor lock-in. You can also provision and install Kubernetes on-premise or in compute nodes, like Microsoft Azure, Cloudscale, Google, Amazon Elastic Compute Cloud (Amazon EC2), Alibaba Cloud Elastic Compute Service (ECS), OpenStack, and VMware vSphere,to name a few. Rancher’s flexibility is not limited to deploying Kubernetes clusters on managed platforms. Deploying Kubernetes Clusters on Any Infrastructure With Rancher, development teams can easily create custom drivers, making it possible for Rancher to support virtually any existing Kubernetes platform. It also has drivers that provide support to other vendors, like DigitalOcean Kubernetes (DOKS), Linode Kubernetes Engine (LKE), Alibaba Cloud Container Service for Kubernetes (ACK), Baidu Cloud Container Engine (CCE), Huawei CCE, Open Telekom Cloud CCE, Oracle Container Engine for Kubernetes (OKE), and Tencent Kubernetes Engine (TKE). Rancher allows your DevOps team to seamlessly deploy managed Kubernetes clusters on popular platforms, like Amazon Elastic Kubernetes Service (EKS), Azure Kubernetes Service (AKS), and Google Kubernetes Engine (GKE). Now that you know the basics of Rancher, here are the key features that set it apart. If you’re looking to delve deeper into the workings of Rancher server and its components, check out the official documentation. However, each node agent can provide the same functionality as the cluster agent when the latter is not available. Node agents: Under normal circumstances, the cattle-node-agent performs several operations on Rancher Launched Kubernetes cluster nodes, such as creating or restoring etcd snapshots or upgrading the cluster to the latest version.Authentication proxy: On each Kubernetes API call, this component authenticates the caller with local or external authentication services and forwards that call to the appropriate downstream cluster.Cluster controllers and cluster agents: These components are responsible for establishing secure communication between the Rancher server and each downstream Kubernetes cluster.RKE is also a CNCF-certified Kubernetes distribution that runs entirely within Docker containers, similar to K3s. Rancher Kubernetes Engine (RKE): RKE is a term used to refer to both the RKE library and the RKE command-line utility that can be used to create RKE clusters.At a high level, its primary function is to allow users to manage, monitor, and provision other Kubernetes clusters through the Rancher UI.
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