I am setting up kubernetes on my Laptop (Windows 10 OS) to work on the Containers and it's Orchestration. I have created Minikube VM using the below command and it got succeeded.
minikube start --vm-driver hyperv --hyperv-virtual-switch "Primary Virtual Switch"I am able to Launch Kubernetes and able to launch the Minikube dashboard as well
I started the Kubernetes cluster and deployed nginx app into Cluster. Below are the commands.
kubectl run hello-nginx --image=nginx --port=8020
kubectl expose deployment hello-nginx --type=NodePort --port=8020 --target-port=8020I am able to view PODs and Services using the below commands.
kubectl get pods
kubectl get servicesit works perfect up to here. I am able to view deployment, PODs and Service information in the Minikube dashboard.
When i run the below command to launch the application in the browser, browser is throwing a message as "Resource Not Found" but I am able to view POD and Service information in the MiniKube Dashboard.
minikube service hello-nginxURL: http://192.168.43.20:32087/
getting exception in a browser
This website could not be found.
Error Code: INET_E_RESOURCE_NOT_FOUNDBelow given the deployment YAML file,
{
"kind": "Deployment",
"apiVersion": "extensions/v1beta1",
"metadata": {
"name": "hello-nginx",
"namespace": "default",
"selfLink": "/apis/extensions/v1beta1/namespaces/default/deployments/hello-nginx",
"uid": "5629038e-93e5-11e9-ad2e-00155d162e0e",
"resourceVersion": "49313",
"generation": 1,
"creationTimestamp": "2019-06-21T05:28:01Z",
"labels": {
"run": "hello-nginx"
},
"annotations": {
"deployment.kubernetes.io/revision": "1"
}
},
"spec": {
"replicas": 1,
"selector": {
"matchLabels": {
"run": "hello-nginx"
}
},
"template": {
"metadata": {
"creationTimestamp": null,
"labels": {
"run": "hello-nginx"
}
},
"spec": {
"containers": [
{
"name": "hello-nginx",
"image": "nginx",
"ports": [
{
"containerPort": 8020,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log",
"terminationMessagePolicy": "File",
"imagePullPolicy": "Always"
}
],
"restartPolicy": "Always",
"terminationGracePeriodSeconds": 30,
"dnsPolicy": "ClusterFirst",
"securityContext": {},
"schedulerName": "default-scheduler"
}
},
"strategy": {
"type": "RollingUpdate",
"rollingUpdate": {
"maxUnavailable": 1,
"maxSurge": 1
}
},
"revisionHistoryLimit": 2147483647,
"progressDeadlineSeconds": 2147483647
},
"status": {
"observedGeneration": 1,
"replicas": 1,
"updatedReplicas": 1,
"readyReplicas": 1,
"availableReplicas": 1,
"conditions": [
{
"type": "Available",
"status": "True",
"lastUpdateTime": "2019-06-21T05:28:01Z",
"lastTransitionTime": "2019-06-21T05:28:01Z",
"reason": "MinimumReplicasAvailable",
"message": "Deployment has minimum availability."
}
]
}
}
Below given the replica set YAML file info,
{
"kind": "ReplicaSet",
"apiVersion": "extensions/v1beta1",
"metadata": {
"name": "hello-nginx-76696c698f",
"namespace": "default",
"selfLink": "/apis/extensions/v1beta1/namespaces/default/replicasets/hello-nginx-76696c698f",
"uid": "562be1e8-93e5-11e9-ad2e-00155d162e0e",
"resourceVersion": "49310",
"generation": 3,
"creationTimestamp": "2019-06-21T05:28:01Z",
"labels": {
"pod-template-hash": "76696c698f",
"run": "hello-nginx"
},
"annotations": {
"deployment.kubernetes.io/desired-replicas": "1",
"deployment.kubernetes.io/max-replicas": "2",
"deployment.kubernetes.io/revision": "1"
},
"ownerReferences": [
{
"apiVersion": "apps/v1",
"kind": "Deployment",
"name": "hello-nginx",
"uid": "5629038e-93e5-11e9-ad2e-00155d162e0e",
"controller": true,
"blockOwnerDeletion": true
}
]
},
"spec": {
"replicas": 1,
"selector": {
"matchLabels": {
"pod-template-hash": "76696c698f",
"run": "hello-nginx"
}
},
"template": {
"metadata": {
"creationTimestamp": null,
"labels": {
"pod-template-hash": "76696c698f",
"run": "hello-nginx"
}
},
"spec": {
"containers": [
{
"name": "hello-nginx",
"image": "nginx",
"ports": [
{
"containerPort": 8020,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log",
"terminationMessagePolicy": "File",
"imagePullPolicy": "Always"
}
],
"restartPolicy": "Always",
"terminationGracePeriodSeconds": 30,
"dnsPolicy": "ClusterFirst",
"securityContext": {},
"schedulerName": "default-scheduler"
}
}
},
"status": {
"replicas": 1,
"fullyLabeledReplicas": 1,
"readyReplicas": 1,
"availableReplicas": 1,
"observedGeneration": 3
}
}
Now I am trying out the Port Forwarding option to route the request to POD, but it is not working.
kubectl port-forward deployment/hello-nginx 8020:8020I am getting the below exception when i try to access the URL "http://127.0.0.1:8020"
Handling connection for 8020
E0622 01:07:06.306320 18888 portforward.go:331] an error occurred forwarding 8020 -> 8020: error forwarding port 8020 to pod c54d6faaa545992dce02f58490a26154134843eb7426a51e78df2cda172b514c, uid : exit status 1: 2019/06/21 08:01:18 socat[4535] E connect(5, AF=2 127.0.0.1:8020, 16): Connection refusedI have read many articles on this but couldn't found the root cause for this issue. Am i missing anything important here?
Thanks for your help in Advance.
Your issue is actually unrelated to Minikube or port forwarding. You expose the port 8020, however the application hello-nginx uses 80. So you should use 80 everywhere instead of 8020. For example:
kubectl run hello-nginx --image=nginx --port=80Saying that, using Minikube is not the best option for Windows. Much better is to use Docker Desktop, then everything you run on Kubernetes is available on your localhost.