Exercise 8.2 - Not able to do a curl using NodePort

Hi,
ubuntu@ip-172-31-32-211:~$ kubectl -n accounting describe services Name: service-lab Namespace: accounting Labels: system=secondary Annotations: <none> Selector: system=secondary Type: NodePort IP: 10.104.115.79 Port: <unset> 8080/TCP TargetPort: 8080/TCP NodePort: <unset> 31742/TCP Endpoints: 192.168.89.54:8080,192.168.89.55:8080 Session Affinity: None External Traffic Policy: Cluster Events: <none> ubuntu@ip-172-31-32-211:~$ kubectl cluster-info Kubernetes master is running at https://k8smaster:6443 KubeDNS is running at https://k8smaster:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. ubuntu@ip-172-31-32-211:~$ curl https://k8smaster:31742 curl: (7) Failed to connect to k8smaster port 31742: Connection refused ubuntu@ip-172-31-32-211:~$ curl http://k8smaster:31742 curl: (7) Failed to connect to k8smaster port 31742: Connection refused
Also, I see in the description that "In a previous exercise we deployed a Load Balancerwhich deployed a ClusterIP and NodePort automatically."
IIRC, In Exercise 8.1 we do not deploy a LB Service. Please correct me if I am wrong.
Comments
-
Hello,
It would look like the service is as expected, so next I would want to make sure the pod is properly running. Just to double-check you have no firewalls in place, and the nodes have 2cpu/7.5G? This is what I would try next:
Check the spelling of the labels, it is case sensitive. Are both the service and the pod using "system=secondary"? The service must match what you set Ex8.1, step 1.
kubectl get pods -o wide --all-namespaces
kubectl -n accounting get svc
kubectl describe node | grep -i taintAs far as the LB setup, the description says "a previous lab", which may be prior to 8.1. For example Ex3.5, step 5.
Regards,
0 -
Hi @ganeshahv,
As long as the Service's
TargetPort
is set to 8080, it will not be able to forward traffic to the port 80 of thenginx
container.I suggest reconfiguring the service and/or the yaml manifest of the
nginx-one
Deployment - which should be performed in step 13 of exercise 8.1.Regards,
-Chris2 -
Hi @chrispokorni , thanks for your suggestion. I reconfigured the services and it works fine now.
`Name: service-lab
body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; }
Namespace: accounting
Labels: system=secondary
Annotations:
Selector: system=secondary
Type: NodePort
IP: 10.99.38.30
Port: 80/TCP
TargetPort: 80/TCP
NodePort: 32204/TCP
Endpoints: 192.168.89.62:80,192.168.89.63:80
Session Affinity: None
External Traffic Policy: Cluster
Events:
ubuntu@ip-172-31-32-211:~$ curl http://k8smaster:32204
<!DOCTYPE html>
Welcome to nginx!Welcome to nginx!
If you see this page, the nginx web server is successfully installed and working. Further configuration is required.
For online documentation and support please refer to nginx.org.
Commercial support is available at nginx.com.Thank you for using nginx.
ubuntu@ip-172-31-32-211:~$`0
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