我通过kubeadm搭建了一个kubernetes集群,创建了几个服务。这些服务可以通过节点ip:端口对外访问,但是当我尝试通过集群ip访问服务时,失败,显示错误信息curl:(7) Failed connect to 10.99.237.89:2379; 连接超时,这个问题怎么解决?
集群相关信息

[root@********** ~]# kubectl describe svc etcd-torus-internal --namespace=default
Name: etcd-torus-internal
Namespace: default
Labels: name=etcd-torus-internal
Selector: name=etcd-torus
Type: ClusterIP
IP: 10.99.237.89
Port: etcd-client 2379/TCP
Endpoints: 10.244.1.10:2379
Session Affinity: None
No events.
[root@********** ~]# curl 10.99.237.89:2379
curl: (7) Failed connect to 10.99.237.89:2379; Connection timed out
[root@********** ~]#
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