![]() Patch versions of control plane components (i.e. In all other cases, all the necessary actions are performed automatically. Note! Manual etcd actions are required when decreasing the number of nodes from two to one. Removing the /control-plane=”” label results in deleting all control plane components on a node, gracefully removing it from the etcd cluster, and regenerating all the necessary config files and certificates.Attaching the /control-plane=”” label to a node results in deploying control plane components on this node, connecting the new etcd node to the etcd cluster, and regenerating all the necessary certificates and config files.The control-plane nodes are scaled automatically using the /control-plane=”” label: If it is unavailable, the proxy tries to connect to other kube-apiserver instances. By default, the proxy server sends requests to the local kube-apiserver instance. The additional proxy server that processes localhost requests is set up on each master node.kube-apiserver is configured to work with all etcd instances.In the multi-master mode, control plane components are automatically deployed in a fault-tolerant manner: kube-apiserver processes localhost requests.kube-apiserver only uses the etcd instance that is hosted on the same node.The CPM module supports control plane running in a single-master or multi-master mode. The CPM module automatically updates the kubeconfig configuration when certificates are changed. The client-side certificate for connecting kubelet to etcd for performing health-checks ( etcd/healthcheck-client.crt & etcd/healthcheck-client.key).Īlso, the CPM module lets you add the additional SANs to certificates (this way, you can quickly and effortlessly add more “entry points” to the Kubernetes API).The client-side certificate for connecting etcd to other cluster members ( etcd/peer.crt & etcd/peer.key).The server-side etcd certificate ( etcd/server.crt & etcd/server.key). ![]()
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