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rke/cluster/validation.go

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package cluster
import (
"fmt"
"strings"
)
func (c *Cluster) ValidateCluster() error {
// make sure cluster has at least one controlplane/etcd host
if len(c.ControlPlaneHosts) == 0 {
return fmt.Errorf("Cluster must have at least one control plane host")
}
if len(c.EtcdHosts) == 0 {
return fmt.Errorf("Cluster must have at least one etcd host")
}
// validate services options
err := validateServicesOption(c)
if err != nil {
return err
}
return nil
}
func validateServicesOption(c *Cluster) error {
servicesOptions := map[string]string{
"etcd_image": c.Services.Etcd.Image,
"kube_api_image": c.Services.KubeAPI.Image,
"kube_api_service_cluster_ip_range": c.Services.KubeAPI.ServiceClusterIPRange,
"kube_controller_image": c.Services.KubeController.Image,
"kube_controller_service_cluster_ip_range": c.Services.KubeController.ServiceClusterIPRange,
"kube_controller_cluster_cidr": c.Services.KubeController.ClusterCIDR,
"scheduler_image": c.Services.Scheduler.Image,
"kubelet_image": c.Services.Kubelet.Image,
"kubelet_cluster_dns_service": c.Services.Kubelet.ClusterDNSServer,
"kubelet_cluster_domain": c.Services.Kubelet.ClusterDomain,
"kubelet_infra_container_image": c.Services.Kubelet.InfraContainerImage,
"kubeproxy_image": c.Services.Kubeproxy.Image,
}
for optionName, OptionValue := range servicesOptions {
if len(OptionValue) == 0 {
return fmt.Errorf("%s can't be empty", strings.Join(strings.Split(optionName, "_"), " "))
}
}
return nil
}