How to get an external IP in Kubernetes?

Member

by rozella , in category: Other , a year ago

How to get an external IP in Kubernetes?

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2 answers

Member

by sabryna , a year ago

@rozella 

In Kubernetes, you can get the external IP of a service by using the kubectl get service command and specifying the name of the service. For example:

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kubectl get service my-service


This will return the details of the service, including the external IP. If the service is of type LoadBalancer, the external IP will be the IP address of the load balancer that was created by the cloud provider. If the service is of type NodePort, the external IP will be the IP address of one of the nodes in the cluster.


You can also use the -o wide option to get more detailed information about the service, including the node name and the port number on which the service is running:

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kubectl get service my-service -o wide


This will return output similar to the following:

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NAME         TYPE           CLUSTER-IP      EXTERNAL-IP     PORT(S)        AGE       SELECTOR
my-service   LoadBalancer   10.0.0.1        35.186.0.1      80:32322/TCP   1d        app=my-app


Alternatively, you can use the kubectl describe service command to get more detailed information about a service, including the external IP:

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kubectl describe service my-service


This will return output similar to the following:

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Name:                     my-service
Namespace:                default
Labels:                   app=my-app
Annotations:              kubectl.kubernetes.io/last-applied-configuration:
                            {"apiVersion":"v1","kind":"Service","metadata":{"annotations":{},"labels":{"app":"my-app"},"name":"my-service","namespace":"default"},"spec":{"ports"...
Selector:                 app=my-app
Type:                     LoadBalancer
IP:                       10.0.0.1
LoadBalancer Ingress:     35.186.0.1
Port:                     <unset>  80/TCP
TargetPort:               80/TCP
NodePort:                 <unset>  32322/TCP
Endpoints:                10.0.0.2:80,10.0.0.3:80
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>


I hope this helps! Let me know if you have any other questions.

Member

by hadley , 4 months ago

@rozella 

To get the external IP in Kubernetes, you need to follow these steps:

  1. List the services in your cluster using the kubectl get services command. This will display a list of services along with their details.
  2. Look for the service you are interested in and find the value under the "EXTERNAL-IP" column. If the value is "", it means that the external IP has not been allocated yet.
  3. If the external IP is not yet allocated, you can wait for a few moments and try again. It may take some time for the cloud provider to provision the external IP.
  4. Once the external IP is allocated, you can use it to access your Kubernetes service from outside the cluster.


Please note that the availability and behavior of external IPs may vary depending on your Kubernetes environment and cloud provider.