I am trying to learn how to use Kibernetes with Minikube and have the following deployment and service:
---
kind: Service
apiVersion: v1
metadata:
name: exampleservice
spec:
selector:
app: myapp
ports:
- protocol: "TCP"
# Port accessible inside cluster
port: 8081
# Port to forward to inside the pod
targetPort: 8080
# Port accessible outside cluster
nodePort: 30002
type: LoadBalancer
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: myappdeployment
spec:
replicas: 5
template:
metadata:
labels:
app: myapp
spec:
containers:
- name: myapp
image: tutum/hello-world
ports:
- containerPort: 8080I expect to be able to hit this service from my local machine at
http://192.168.64.2:30002As per the command: minikube service exampleservice --url but when I try to access this from the browser I get a site cannot be reached error.
Some information that may help debugging:
kubectl get services --all-namespaces:
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default exampleservice LoadBalancer 10.104.248.158 <pending> 8081:30002/TCP 26m
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2h
default user-service-service LoadBalancer 10.110.181.202 <pending> 8080:30001/TCP 42m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 2h
kube-system kubernetes-dashboard ClusterIP 10.110.65.24 <none> 80/TCP 2h
I am running minikube on OSX.
NOTE: Minikube doesn’t support LoadBalancer services(until today I'm commenting), so the service will never get an external IP. But you can access the service anyway through its external port.
you can get the IP and port through which you can access the service by running
minikube service kubia-http #to open a browser with an IP and port
OR
minikube service kubia --url #to get the IP and port in the terminal
This is expected. Do note that LoadBalancer is for cloud to create external load balancer like ALP/NLP in AWS and something similar in GCP/Azure etc.
Update the service as shown here. here i assume 192.168.64.2 is your minikube ip. if not, update it with minikube ip to make it work.
kind: Service
apiVersion: v1
metadata:
name: exampleservice
spec:
selector:
app: myapp
ports:
- protocol: "TCP"
# Port accessible inside cluster
port: 8081
# Port to forward to inside the pod
targetPort: 80
# Port accessible outside cluster
nodePort: 30002
type: LoadBalancer
externalIPs:
- 192.168.64.2
Now you can access your application at http://192.168.64.2:8081/
If you need to access the application at 30002, you can use it like this
kind: Service
apiVersion: v1
metadata:
name: exampleservice
spec:
selector:
app: myapp
ports:
- protocol: "TCP"
# Port accessible inside cluster
port: 8081
# Port to forward to inside the pod
targetPort: 80
# Port accessible outside cluster
nodePort: 30002
type: NodePort
Your deployment file does not look correct to me.
delete it kubectl delete deploy/myappdeployment
use this to create again.
apiVersion: apps/v1beta1
kind: Deployment
metadata:
labels:
app: myapp
name: myappdeployment
spec:
replicas: 5
selector:
matchLabels:
app: myapp
strategy: {}
template:
metadata:
labels:
app: myapp
spec:
containers:
- image: tutum/hello-world
name: myapp
ports:
- containerPort: 80