I have deployed an application in my minikube cluster, the application access is ok via ingress gateway service at http://172.18.97.73:31566/.
minikube ip
172.18.97.73
kubectl get svc -n istio-system
istio-ingressgateway NodePort 10.99.4.153 <none> 15021:31123/TCP,80:31566/TCP,443:32094/TCP,15012:30004/TCP,15443:30369/TCP 3h48m
but kiali graph shows as unknown the origin of the traffic.
kiali graph
i can't understand what is wrong, could you help me?
the manifest is here:
apiVersion: v1
kind: Service
metadata:
name: application
spec:
ports:
- port: 8082
selector:
app: app
---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: http-gateway
spec:
selector:
istio: ingressgateway # use Istio default gateway implementation
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: application-vs
spec:
hosts:
- "*"
gateways:
- "default/http-gateway"
http:
- route:
- destination:
host: application.default.svc.cluster.local
port:
number: 8082
Related
I am trying to make an Istio gateway (with certificates from for public access to a deployed application. Here are the configurations:
Cert manager installed in cluster via helm:
helm repo add jetstack https://charts.jetstack.io
helm repo update
helm install cert-manager jetstack/cert-manager --namespace cert-manager --create-namespace --set installCRDs=true
Certificate issuer:
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
name: letsencrypt-staging
namespace: kube-system
spec:
acme:
email: xxx#gmail.com
server: https://acme-v02.api.letsencrypt.org/directory
privateKeySecretRef:
# Secret resource that will be used to store the account's private key.
name: letsencrypt-staging
# Add a single challenge solver, HTTP01 using istio
solvers:
- http01:
ingress:
class: istio
Certificate file:
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
name: url-certs
namespace: istio-system
annotations:
cert-manager.io/issue-temporary-certificate: "true"
spec:
secretName: url-certs
issuerRef:
name: letsencrypt-staging
kind: ClusterIssuer
commonName: bot.demo.live
dnsNames:
- bot.demo.live
- "*.demo.live"
Gateway file:
# gateway.yaml
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: public-gateway
namespace: istio-system
spec:
selector:
istio: ingressgateway # use istio default controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- "*"
tls:
httpsRedirect: true
- port:
number: 443
name: https-url-1
protocol: HTTPS
hosts:
- "*"
tls:
mode: SIMPLE
credentialName: "url-certs" # This should match the Certificate secretName
Application Deployment file:
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: microbot
name: microbot
namespace: bot-demo
spec:
replicas: 1
selector:
matchLabels:
app: microbot
template:
metadata:
labels:
app: microbot
spec:
containers:
- name: microbot
image: dontrebootme/microbot:v1
resources:
limits:
memory: "128Mi"
cpu: "500m"
ports:
- containerPort: 80
Virtual service and application service:
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: microbot-virtual-svc
namespace: bot-demo
spec:
hosts:
- bot.demo.live
gateways:
- istio-system/public-gateway
http:
- match:
- uri:
prefix: "/"
route:
- destination:
host: microbot-service
port:
number: 9100
---
apiVersion: v1
kind: Service
metadata:
name: microbot-service
namespace: bot-demo
spec:
selector:
app: microbot
ports:
- port: 9100
targetPort: 80
Whenever I try to curl https://bot.demo.live, I get a certificate error. The certificate issuer is working. I just can't figure out how to expose the deployed application via the istio gateway for external access. bot.demo.live is already in my /etc/hosts/ file and and I can ping it just fine.
What am I doing wrong?
I’ve the following application which Im able to run in K8S successfully which using service with type load balancer, very simple app with two routes
/ - you should see 'hello application`
/api/books should provide list of book in json format
This is the service
apiVersion: v1
kind: Service
metadata:
name: go-ms
labels:
app: go-ms
tier: service
spec:
type: LoadBalancer
ports:
- port: 8080
selector:
app: go-ms
This is the deployment
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: go-ms
labels:
app: go-ms
spec:
replicas: 2
template:
metadata:
labels:
app: go-ms
tier: service
spec:
containers:
- name: go-ms
image: rayndockder/http:0.0.2
ports:
- containerPort: 8080
env:
- name: PORT
value: "8080"
resources:
requests:
memory: "64Mi"
cpu: "125m"
limits:
memory: "128Mi"
cpu: "250m"
after applied the both yamls and when calling the URL:
http://b0751-1302075110.eu-central-1.elb.amazonaws.com/api/books
I was able to see the data in the browser as expected and also for the root app using just the external ip
Now I want to use istio, so I follow the guide and install it successfully via helm
using https://istio.io/docs/setup/kubernetes/install/helm/ and verify that all the 53 crd are there and also istio-system
components (such as istio-ingressgateway
istio-pilot etc all 8 deployments are in up and running)
I’ve change the service above from LoadBalancer to NodePort
and create the following istio config according to the istio docs
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: http-gateway
spec:
selector:
istio: ingressgateway
servers:
- port:
number: 8080
name: http
protocol: HTTP
hosts:
- "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: virtualservice
spec:
hosts:
- "*"
gateways:
- http-gateway
http:
- match:
- uri:
prefix: "/"
- uri:
exact: "/api/books"
route:
- destination:
port:
number: 8080
host: go-ms
in addition I’ve added the following
kubectl label namespace books istio-injection=enabled where the application is deployed,
Now to get the external Ip i've used command
kubectl get svc -n istio-system -l istio=ingressgateway
and get this in the external-ip
b0751-1302075110.eu-central-1.elb.amazonaws.com
when trying to access to the URL
http://b0751-1302075110.eu-central-1.elb.amazonaws.com/api/books
I got error:
This site can’t be reached
ERR_CONNECTION_TIMED_OUT
if I run the docker rayndockder/http:0.0.2 via
docker run -it -p 8080:8080 httpv2
I path's works correctly!
Any idea/hint What could be the issue ?
Is there a way to trace the istio configs to see whether if something is missing or we have some collusion with port or network policy maybe ?
btw, the deployment and service can run on each cluster for testing of someone could help...
if I change all to port to 80 (in all yaml files and the application and the docker ) I was able to get the data for the root path, but not for "api/books"
I tired your config with the modification of gateway port to 80 from 8080 in my local minikube setup of kubernetes and istio. This is the command I used:
kubectl apply -f - <<EOF
apiVersion: v1
kind: Service
metadata:
name: go-ms
labels:
app: go-ms
tier: service
spec:
ports:
- port: 8080
selector:
app: go-ms
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: go-ms
labels:
app: go-ms
spec:
replicas: 2
template:
metadata:
labels:
app: go-ms
tier: service
spec:
containers:
- name: go-ms
image: rayndockder/http:0.0.2
ports:
- containerPort: 8080
env:
- name: PORT
value: "8080"
resources:
requests:
memory: "64Mi"
cpu: "125m"
limits:
memory: "128Mi"
cpu: "250m"
---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: http-gateway
spec:
selector:
istio: ingressgateway
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: go-ms-virtualservice
spec:
hosts:
- "*"
gateways:
- http-gateway
http:
- match:
- uri:
prefix: /
- uri:
exact: /api/books
route:
- destination:
port:
number: 8080
host: go-ms
EOF
The reason that I changed the gateway port to 80 is that, the istio ingress gateway by default opens up a few ports such as 80, 443 and few others. In my case, as minikube doesn't have an external load balancer, I used node ports which is 31380 in my case.
I was able to access the app with url of http://$(minikube ip):31380.
There is no point in changing the port of services, deployments since these are application specific.
May be this question specifies the ports opened by istio ingress gateway.
I am trying to expose kiali on my default gateway. I have other services working for apps in the default namespace but have not been able to route traffic to anything in the istio namespace
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: gateway
spec:
selector:
istio: ingressgateway
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- '*'
tls:
httpsRedirect: true
- port:
number: 443
name: https
protocol: HTTPS
hosts:
- '*'
tls:
mode: SIMPLE
privateKey: /etc/istio/ingressgateway-certs/tls.key
serverCertificate: /etc/istio/ingressgateway-certs/tls.crt
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: kiali
namespace: default
spec:
hosts:
- kiali.dev.example.com
gateways:
- gateway
http:
- route:
- destination:
host: kiali.istio-system.svc.cluster.local
port:
number: 20001
The problem was I had mTLS enabled and kiali does not have a sidecar thus can not be validated by mTLS. the solution was to add a destination rule disabling mTLS for it.
apiVersion: 'networking.istio.io/v1alpha3'
kind: DestinationRule
metadata:
name: kiali
namespace: istio-system
spec:
host: kiali.istio-system.svc.cluster.local
trafficPolicy:
tls:
mode: DISABLE
You should define an ingress gateway and make sure that the hosts in the gateway match the hosts in the virtual service. Also specify the port of the destination. See the Control Ingress Traffic task.
For me this worked!
I ran
istioctl proxy-config routes istio-ingressgateway-866d7949c6-68tt4 -n istio-system -o json > ./routes.json
to get the dump of all the routes. The kiali route got corrupted for some reason. I deleted the virtual service and created it again, that fixed it.
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: kiali
namespace: istio-system
spec:
gateways:
- istio-system/my-gateway
hosts:
- 'mydomain.com'
http:
- match:
- uri:
prefix: /kiali/
route:
- destination:
host: kiali.istio-system.svc.cluster.local
port:
number: 20001
weight: 100
---
apiVersion: 'networking.istio.io/v1alpha3'
kind: DestinationRule
metadata:
name: kiali
namespace: istio-system
spec:
host: kiali.istio-system.svc.cluster.local
trafficPolicy:
tls:
mode: SIMPLE
---
Note: hosts needed to be set, '*' didnt work for some reason.
in the helm values file there is a setting global.k8sIngressSelector with the description.
Gateway used for legacy k8s Ingress resources. By default it is
using 'istio:ingress', to match 0.8 config. It requires that
ingress.enabled is set to true. You can also set it
to ingressgateway, or any other gateway you define in the 'gateway'
section.
My interpretation of this is that the istio ingress should pick up normal ingress configurations instead of having to make a virtual service. Is this correct? I tried it and it is not working for me.
kind: Deployment
apiVersion: apps/v1
metadata:
name: echo
spec:
replicas: 1
selector:
matchLabels:
app: echo
template:
metadata:
labels:
app: echo
spec:
containers:
- name: echo
image: mendhak/http-https-echo
ports:
- containerPort: 80
---
kind: Service
apiVersion: v1
metadata:
name: echo
spec:
type: ClusterIP
selector:
app: echo
ports:
- port: 80
name: http
this works
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: gateway
spec:
selector:
istio: ingressgateway
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- '*.dev.example.com'
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: echo
spec:
hosts:
- echo.dev.example.com
gateways:
- gateway
http:
- route:
- destination:
host: echo
this doesnt
kind: Ingress
apiVersion: extensions/v1beta1
metadata:
name: echo
spec:
rules:
- host: echo.dev.example.com
http:
paths:
- backend:
serviceName: echo
servicePort: 80
Your Ingress needs to have an annotation: kubernetes.io/ingress.class: istio.
Depending on what version of Istio you are using, it may not be working anyway. There is currently an open issue about Ingress not working in the latest drivers, and it sounds like it may have been broken for a while.
https://github.com/istio/istio/issues/10500
Having issues configuring SSL termination in my Kubernetes cluster. Attempting to figure out best place for this to happen.
I have been able to get it working following the instructions listed here and then updating the ingress controller service to include the SSL certificate details using service.beta.kubernetes.io/aws-load-balancer-ssl-cert annotation:
kind: Service
apiVersion: v1
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app: ingress-nginx
annotations:
service.beta.kubernetes.io/aws-load-balancer-proxy-protocol: '*'
service.beta.kubernetes.io/aws-load-balancer-ssl-cert: arn:...
spec:
type: LoadBalancer
selector:
app: ingress-nginx
ports:
- name: https
port: 443
targetPort: 80
I then have ingress rules and services setup similar to:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: app1
annotations:
kubernetes.io/ingress.class: nginx
spec:
rules:
- host: app1.foo.bar
http:
paths:
- backend:
serviceName: app1
servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
name: app1
spec:
type: LoadBalancer
ports:
- name: http
port: 80
targetPort: 80
selector:
app: app1
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: app1
spec:
template:
metadata:
labels:
app: app1
spec:
containers:
- image: nginx
name: nginx
ports:
- containerPort: 80
When going to app1.foo.bar I can see that:
http requests are redirected to https
the SSL certificate is correctly applied
Originally I was trying to apply the certificate to my individual app services. I could see the certificate being applied to the ELB in AWS but wasn't being passed through. So my question is:
Is this the correct configuration or is there a better solution?
Thank you :)
I would suggest terminating SSL on the Nginx Ingress Controller exposed with ELB, and use kube-lego for automated SSL certificate management.
https://github.com/kubernetes/ingress-nginx &
https://github.com/jetstack/kube-lego