I tried configuring ingress on my kubernetes cluster. I followed the documentation to install ingress controller and ran the following commands
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/provider/baremetal/service-nodeport.yaml
After that default-http-backend and nginx-ingress-controller were running:
ingress-nginx default-http-backend-846b65fb5f-6kwvp 1/1 Running 0 23h 192.168.2.28 node1
ingress-nginx nginx-ingress-controller-d658896cd-6m76j 1/1 Running 0 6m 192.168.2.31 node1
I tried testing ingress and I deployed the following service:
apiVersion: apps/v1
kind: Deployment
metadata:
name: echoserver-deploy
spec:
replicas: 2
selector:
matchLabels:
app: echo
template:
metadata:
labels:
app: echo
spec:
containers:
- name: my-echo
image: gcr.io/google_containers/echoserver:1.8
---
apiVersion: v1
kind: Service
metadata:
name: echoserver-svc
spec:
selector:
app: echo
ports:
- protocol: TCP
port: 8080
targetPort: 8080
And the following ingress:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: happy-ingress
annotations:
INGRESS.kubernetes.io/rewrite-target: /
spec:
rules:
- host: happy.k8s.io
http:
paths:
- path: /echoserver
backend:
serviceName: echoserver-svc
servicePort: 8080
When I ran the command 'kubectl get ing' I received:
NAME HOSTS ADDRESS PORTS AGE
happy-ingress happy.k8s.io 80 14m
I didn't have ADDRESS resolved and I can’t figure out what the problem is because all the pods are running. Can you give me a hint as to what the issue can be?
Thanks
You have to enable ingress addons
by following command before creating ingress rules. You can also enable it before executing any other command
$ minikube addons enable ingress
ingress was successfully enabled
Wait until the pods are up and running. You can check by executing following command and wait for the similar output
kubectl get pods -n kube-system | grep nginx-ingress-controller
nginx-ingress-controller-5984b97644-jjng2 1/1 Running 2 1h
For Deployment
you have to specify the containerPort
and for Service
you have to specify http
protocol.
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: echoserver-deploy
spec:
replicas: 2
selector:
matchLabels:
app: my-echo
template:
metadata:
labels:
app: my-echo
spec:
containers:
- name: my-echo
image: gcr.io/kubernetes-e2e-test-images/echoserver:2.1
ports:
- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
name: echoserver-svc
spec:
selector:
app: my-echo
ports:
- protocol: TCP
port: 80
targetPort: 8080
name: http
For ingress rule change the port servicePort
from 8080 to 80 the default http port.
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: happy-ingress
annotations:
INGRESS.kubernetes.io/rewrite-target: /
spec:
rules:
- host: happy.k8s.io
http:
paths:
- path: /echoserver
backend:
serviceName: echoserver-svc
servicePort: 80
Now apply those files and create your pods, service and ingress rule. Wait few moment, it will take few moments to get ADDRESS for your ingress rule. Now you can visit your service using minikube ip
address but not by host name yet. For that you have to add the host and respective IP address in /etc/hosts
file. So open /etc/hosts
file in your favorite editor and add below line where is the actual IP of you minikube
<minikube_ip> happy.k8s.io
Now you access you service using host name. Verify be following command
curl http://happy.k8s.io/echoserver
I don't know if this will help, but i had the same problem. I didn't install no ingress controller or whatever like some people said on Github, i just created an Ingress to be able to point my subdomain to a different service and at first my Ingress had no IP address(it was empty).
NAME HOSTS ADDRESS PORTS AGE
ingress delivereo.tk,back.delivereo.tk 80 39s
I think it was because my 2 services for front-end app and back-end api had the Type of LoadBalancer. I changed it to NodePort because they don't need external ip now that the ingress controller will manage what url goes where.
And when i did change the type of my services to NodePort, after 2 or 3 minutes the IP address of the Ingress appeared. When i pointed my Cloudflare DNS to the new Ingress IP, i tested my subdomain and it worked !
BEFORE
apiVersion: v1
kind: Service
metadata:
name: delivereotk
spec:
ports:
- port: 80
selector:
app: delivereotk
type: LoadBalancer
AFTER
apiVersion: v1
kind: Service
metadata:
name: delivereotk
spec:
ports:
- port: 80
selector:
app: delivereotk
type: NodePort
Ingress
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress
spec:
rules:
- host: delivereo.tk
http:
paths:
- backend:
serviceName: delivereotk
servicePort: 80
- host: back.delivereo.tk
http:
paths:
- backend:
serviceName: backdelivereotk
servicePort: 80
Your hostname happy.k8s.io
should resolve to an actual IP address of the nginx-ingress-controller, which points to the front of your load balancer.
You can check under which IP is the cluster working:
bash-3.2$ kubectl cluster-info
Kubernetes master is running at https://192.168.1.100:8443
KubeDNS is running at https://192.168.1.100:8443/api/v1/namespaces/kube-
system/services/kube-dns:dns/proxy
Test the ingress controller for your cluster using curl
bash-3.2$ curl http://192.168.1.100:8080
default backend - 404
In the end, you should just add the domain entry to /etc/hosts
:
192.168.1.100 happy.k8s.io
As official document say:
Because NodePort Services do not get a LoadBalancerIP assigned by definition, the NGINX Ingress controller does not update the status of Ingress objects it manages
You have deployed the NGINX Ingress controller as described in the installation guide, so it is normal for your ADDRESS was empty!
Instead, the external client must append the NodePort allocated to the ingress-nginx Service to HTTP requests.
ps. This question is not about minikube
I faced similar issue, realized I needed to :
Enable the NGINX Ingress controller, run the following command:
minikube addons enable ingress
Verify that the NGINX Ingress controller is running
kubectl get pods -n kube-system
Expect nginx-ingress-controller pod in running status.
I had a similar case. The ingress we have written is just a ingress rule. To make the address available we need to have ingress controller pods running too.
Simply check if the controller pods is running or not
kubectl get pods
You should have the controller pods running as show in the image. If not you can install it using helm.
if you are using helm2 simply use the following command:
helm install stable/nginx-ingress --name my-nginx
follow this docs for different ways to install it. https://kubernetes.github.io/ingress-nginx/deploy/
When doing helm install you might get the following issue if you don't have tiller installed.
Error: could not find tiller
To fix it install tiller as following:
kubectl -n kube-system create serviceaccount tiller
kubectl create clusterrolebinding tiller --clusterrole cluster-admin --serviceaccount=kube-system:tiller
helm init --service-account tiller
To verify tiller is working:
kubectl get pods --namespace kube-system