无法确定集群上安装的 Kubernetes 服务的类型

Unable to determine the type of a Kubernetes service that was installed on a Cluster

我正在尝试为已安装在 IBM Cloud Private (ICP) 上的 MessageSight 服务设置 TLS

ICP 和 MessageSight 已经安装,我试图查看 MessageSight 是如何作为服务公开的(是 NodePort、LoadBalancer 还是外部名称)

$kubectl get services 
NAME                              TYPE        CLUSTER-IP     EXTERNAL-IP     PORT(S)                       AGE
messagesight-messagesight-svc     ClusterIP   10.0.241.72    168.xx.xx.xxx   9089/TCP,1883/TCP,16102/TCP   9d
messagesight-messagesightui-svc   ClusterIP   10.0.139.199   168.xx.xx.xxx   9087/TCP                      9d

类型表明它是一个 ClusterIP,但它有一个外部 IP。我一直认为如果服务类型是 ClusterIP,外部 IP 将被清空。如果它是 LoadBalancer,我希望看到外部 IP。

描述服务不提供任何附加信息

kubectl describe svc messagesight-messagesight-svc 
Name:              messagesight-messagesight-svc
Labels:            app=messagesight
                   chart=messagesight
                   heritage=Tiller
                   release=messagesight
Annotations:       <none>
Selector:          app=messagesight,release=messagesight
Type:              ClusterIP
IP:                10.0.241.72
External IPs:      168.xx.xx.xxx
Port:              adminport  9089/TCP
TargetPort:        9089/TCP
Endpoints:         10.1.66.1:9089
Port:              messaging-1883  1883/TCP
TargetPort:        1883/TCP
Endpoints:         10.1.66.1:1883
Port:              messaging-16102  16102/TCP
TargetPort:        16102/TCP
Endpoints:         10.1.66.1:16102
Session Affinity:  None
Events:            <none>

我可以通过外部 IP 和端口访问该服务,但对它的工作方式感到困惑。

我安装了一个 Jenkins 设置来进行观察,输出看起来不错并且对我有意义

$kubectl get services 
NAME                       TYPE       CLUSTER-IP     EXTERNAL-IP   PORT(S)                          AGE
jenkins-ibm-jenki   NodePort   10.0.241.156   <none>        8080:31058/TCP,50000:31155/TCP   1d

我可以看到类型是 NodePort,它没有对应的外部 IP。

服务的描述也让我清楚的知道这个服务是NodePort类型

$kubectl describe svc jenkins-ibm-jenki 
Name:                     jenkins-ibm-jenki
Labels:                   app=jenkins-ibm-jenki
                          chart=ibm-jenkins-dev-1.0.2
                          component=jenkins-jenkins-master
                          heritage=Tiller
                          release=jenkins
Annotations:              helm.sh/created=1559696400
Selector:                 app=jenkins-ibm-jenki,component=jenkins-jenkins-master
Type:                     NodePort
IP:                       10.0.241.156
Port:                     http  8080/TCP
TargetPort:               8080/TCP
NodePort:                 http  31058/TCP
Endpoints:                10.1.66.89:8080
Port:                     slavelistener  50000/TCP
TargetPort:               50000/TCP
NodePort:                 slavelistener  31155/TCP
Endpoints:                10.1.66.89:50000
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

documentation所述:

In the Service spec, externalIPs can be specified along with any of the ServiceTypes