I need to define the following routes on my Kubernetes ingress :
my-website.com/* => web client
my-website.com/api/* => graphql api
I've tried to set the following but only the /api route works:
kind: Ingress
metadata:
name: "my-ingress"
annotations:
"kubernetes.io/ingress.class": nginx
"nginx.ingress.kubernetes.io/affinity": cookie
"nginx.ingress.kubernetes.io/rewrite-target": "/$2"
"nginx.ingress.kubernetes.io/use-regex": "true"
spec:
rules:
- host: my-website.com
http:
paths:
- path: "/api(/|$)(.*)"
backend:
serviceName: web-client
servicePort: 80
- path: "/"
backend:
serviceName: graphql-server
servicePort: 80
What's the problem with the / route?
I've tried to use / and /(.*) paths but none redirects to the correct service.
Could you after replace "nginx.ingress.kubernetes.io/rewrite-target": "/$2" to "nginx.ingress.kubernetes.io/rewrite-target: /"
Also change path from /api(/|$)(.*) to /api/(.*)
I am assuming web-client and graphql-server services are running fine.
in case you still face the issue, please share your ingress controller logs for more details
Related
I have this nginx ingress controller:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: my-ingress
annotations:
nginx.ingress.kubernetes.io/use-regex: "true"
kubernetes.io/ingress.allow-http: "true"
nginx.ingress.kubernetes.io/enable-cors: "true"
nginx.ingress.kubernetes.io/ssl-redirect: "false"
nginx.ingress.kubernetes.io/force-ssl-redirect: "false"
# Limit uploads to 8TB
nginx.ingress.kubernetes.io/proxy-body-size: 800000m
spec:
rules:
- host: myhost.info
http:
paths:
# NOTE: this one should come after all other routes. To avoid hijacking requests.
- path: /api/walrus(/|$)(.*)
backend:
serviceName: service-a
servicePort: 8080
- path: /api(/|$)(.*)
backend:
serviceName: service-b
servicePort: 8080
- path: /(.*)
backend:
serviceName: frontend
servicePort: 8080
- http:
paths:
# NOTE: this one should come after all other routes. To avoid hijacking requests.
- path: /api/walrus(/|$)(.*)
backend:
serviceName: service-a
servicePort: 8080
- path: /api(/|$)(.*)
backend:
serviceName: service-b
servicePort: 8080
- path: /(.*)
backend:
serviceName: frontend
servicePort: 8080
I duplicated the paths just make it clear. My question is, what is the difference in the end result when I add the host key vs when I don't?
Until now I've used it because if I don't have it I'm getting my POST request redirected into get request as in this question: Kubernetes NGINX Ingress changes HTTP request from a POST to a GET
But I also noticed that on EKS, if I DO add a host, the ingress just returns 404 for everything until I remove it and leavit only with http. So I'm a bit confused on this and wanted someone to clarify the correct way to do things here.
Also, for a production enviroment, how do I set the host correctly to a public domain and how do I set the tls certificates?
Regarding HTTPS: https://aws.amazon.com/blogs/opensource/network-load-balancer-nginx-ingress-controller-eks/#bGA9CAkdlMh has a section "Defining the Ingress resource (with SSL termination) to route traffic to the services created above" that shows how to terminate TLS at nginx-ingress. Even if you're not using an AWS Network Load Balancer (NLB), that may be helpful. In the case of AWS with an NLB, you have another option, terminating at the NLB: https://aws.amazon.com/blogs/aws/new-tls-termination-for-network-load-balancers/
There are two nginx ingress controllers, and it's unclear which one you're using. The nginxinc controller requires a 'host'. The other, https://github.com/kubernetes/ingress-nginx, I'm not sure about. When you use TLS, nginx uses SNI for HTTPS, which seems like it would require a 'host': http://nginx.org/en/docs/http/configuring_https_servers.html#sni
I have a react web application listening on the default path and I'm looking to include my API backend on the same URL.
A snippet of my ingress is below:
http:
paths:
- backend:
serviceName: atsweb
servicePort: 80
path: /(.*)
- backend:
serviceName: atsapi
servicePort: 80
path: /api(/|$)(.*)
My API has a bunch of functions which are routed after /api/ and I have a test page at mydomain.io/api/values which I cannot get to. My frontend service works fine.
Is it just the pathing which is incorrect?
I've deployed a standalone API just to check the container port/service ports are correct.
Looks like you copied the example from . What are your ingress annotations? Check the rewrite as it looks like is making a redirect. Nonetheless, the ingress that would work for looks like this:
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: your-ingress
namespace: default
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/ssl-redirect: "false"
spec:
rules:
- http:
paths:
- path: /
backend:
serviceName: atsweb
servicePort: 80
- path: /api/
backend:
serviceName: atsapi
servicePort: 80
Check there is no rewrite annotation. This makes your uri be appended fully to the next proxy. Thus, making mydomain.io/api/values go to atsapi:80/api/values
I have a backend using https.
I want to separate load on that back-end based on URL/path.
I decided to use ingress to do this url/path based logic in order to move traffic to different back-ends ( same back-ends , just duplicated to different NodePorts )
my question is how I can configure the ingress to receive https requests and to forward those https requests to the https back-end?
thanks
edit:
I added the yaml file:
spec:
rules:
- http:
paths:
- backend:
serviceName: service
servicePort: 9443
path: /carbon
- backend:
serviceName: service2
servicePort: 9443
path: /oauth
for some reason I can;t change the rule form http to https
Attention: This answer applies to the ingress-nginx solution provided by the kubernetes organisation on github (https://github.com/kubernetes/ingress-nginx)
If you want to use load balancing mechanisms in k8s you should use services instead and start multiple instances behind that service that way k8s will do the load balancing. If you want to use different versions of your backend (e.g. prod and test) your way of separating them is fine
if your service is only reachable via https you need to add the following annotation to your ingress yaml: (documentation)
nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
To secure ingress itself take a look at this: https://kubernetes.io/docs/concepts/services-networking/ingress/#tls
But if you want that the backend services decrypt the TLS communication use the following annotation instead: (documentation)
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
Edit:
The Ingress YAML should look like this if you want to reach the backend via TLS:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-name
namespace: namespace-name
annotations:
nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
spec:
rules:
- http:
paths:
- backend:
serviceName: service
servicePort: 9443
path: /carbon
- backend:
serviceName: service2
servicePort: 9443
path: /oauth
The Ingress YAML should look like this if you want to reach the backend via TLS with TLS decryption in the ingress controller:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-name
namespace: namespace-name
annotations:
nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
spec:
tls:
- hosts:
- app.myorg.com
secretName: tls-secret
rules:
- http:
paths:
- backend:
serviceName: service
servicePort: 9443
path: /carbon
- backend:
serviceName: service2
servicePort: 9443
path: /oauth
It's important to note that tls-secret is the name of a SecretConfig with a valid Certificate issued for the host (app.myorg.com)
The Ingress YAML should look like this if you want to reach the backend via TLS with TLS decryption in the backend:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-name
namespace: namespace-name
annotations:
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
spec:
rules:
- http:
paths:
- backend:
serviceName: service
servicePort: 9443
path: /carbon
- backend:
serviceName: service2
servicePort: 9443
path: /oauth
I never tested the last version myself so i don't know if that actually works but I'd strongly advise reading this passage for that variant.
If you are using the NGINX Ingress controller (https://docs.nginx.com/nginx-ingress-controller/), the nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" does not work. However, the nginx.org/ssl-services will let you pick the services that require TLS on the backend. The name is confusing, so it took me a while to realize the real purpose of it.
This does not work with the standard Kubernetes Ingress controller that uses NGINX under the hood; it only works with the NGINX-sourced controller.
Advanced annotation docs: https://docs.nginx.com/nginx-ingress-controller/configuration/ingress-resources/advanced-configuration-with-annotations/
In this example, NGINX will connect to the ssl-svc using TLS; it ignores any self-signed certificates. Example (https://github.com/nginxinc/kubernetes-ingress/tree/v1.12.0/examples/ssl-services):
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: cafe-ingress
annotations:
nginx.org/ssl-services: "ssl-svc"
spec:
rules:
- host: cafe.example.com
http:
paths:
- path: /tea
backend:
serviceName: tea-svc
servicePort: 80
- path: /coffee
backend:
serviceName: coffee-svc
servicePort: 80
- path: /ssl
backend:
serviceName: ssl-svc
servicePort: 443
I have setup Custom Nginx ingress controller with Ingress resource in Kubernetes and instead of "default-http-backend service", I used custom application as the default backend service to be served for default requests. I have also used custom SSL which is set as kubernetes secret, for my service. The issue is that when I request the hostnames which are mentioned in the rules, the https redirection works. But when the requests other than the hosts mentioned in the rules are made, it serves the default app, but the https redirection does not work.
How can I redirect requests from http to https for all the requests including default requests. In other words, how to setup https redirection for wildcard domains in ingress resource.
Please find my yaml files for ingress resource.
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress-resource
namespace: default
annotations:
kubernetes.io/ingress.class: "nginx"
kubernetes.io/ingress.allow-http: "false"
ingress.kubernetes.io/rewrite-target: /
ingress.kubernetes.io/ssl-redirect: "true"
ingress.kubernetes.io/proxy-connect-timeout: "14400"
ingress.kubernetes.io/proxy-send-timeout: "14400"
ingress.kubernetes.io/proxy-read-timeout: "14400"
spec:
tls:
- secretName: tls-secret
rules:
- host: service1.example.com
http:
paths:
- path: /
backend:
serviceName: service1
servicePort: 80
- host: service2.example.com
http:
paths:
- path: /
backend:
serviceName: service2
servicePort: 80
---
I needed to configure custom service (not default-http-backend service) for default requests which does not have rules set and this custom service should use custom SSL. At present nginx-ingress-controller doesn't do anything if the domain names are omitted from the Ingress rules (with the intention of the "wildcard" TLS cert being used).
Therefore I have added the following code in the ingress yaml I used and this works perfectly. I have added the wildcard tls name in ingress rules at the bottom for the custom default service. Please find the code below:
rules:
- host: service1.example.com
http:
paths:
- path: /
backend:
serviceName: service1
servicePort: 80
- host: service2.example.com
http:
paths:
- path: /
backend:
serviceName: service2
servicePort: 80
- host: '*.example.com'
http:
paths:
- path: /
backend:
serviceName: custom-backend-service
servicePort: 80
So I have an interesting use case. I am running multiple micro-services on my Kubernetes cluster. My applications use NextJS which make internal calls to _next routes.
My issue came from the fact that I needed a way to differentiate between services and their requests to the _next files. So I implemented NextJS's assetPrefix feature which works perfectly in development, appending my prefix in front of _next so the requests look like .../${PREFIX}/_next/.... That way I could set up an ingress and route files base on the prefix to the appropriate service on my cluster. I set up a Kubernetes Ingress controller following this guide: https://akomljen.com/kubernetes-nginx-ingress-controller/
My ingress config is:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: dev-ingress
spec:
rules:
- host: baseurl.com
http:
paths:
- path: /auth
backend:
serviceName: auth-svc
servicePort: 80
- path: /static/auth
backend:
serviceName: auth-svc
servicePort: 80
- path: /login
backend:
serviceName: auth-svc
servicePort: 80
- path: /settings
backend:
serviceName: auth-svc
servicePort: 80
- path: /artwork
backend:
serviceName: artwork-svc
servicePort: 80
- path: /static/artwork
backend:
serviceName: artwork-svc
servicePort: 80
So here is the problem. Now that everything is set up, properly deployed, and the ingress is running following the above guide and using the above rules, my services are trying to make requests to .../_next/... instead of .../${PREFIX}/_next/... so they can't find the proper files and nothing is working. I cannot seem to figure out what is going on. Anyone have any ideas? Thanks in advance!
You are using built-in NGINX Ingress Controller that, unfortunately, has no such functionality.
My advice is to use NGINX Plus Ingress Controller annotation functionality if you can afford it.
You can find official example here.
Example:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: cafe-ingress
annotations:
nginx.org/rewrites: "serviceName=tea-svc rewrite=/;serviceName=coffee-svc rewrite=/beans/"
spec:
rules:
- host: cafe.example.com
http:
paths:
- path: /tea/
backend:
serviceName: tea-svc
servicePort: 80
- path: /coffee/
backend:
serviceName: coffee-svc
servicePort: 80
Below are the examples of how the URI of requests to the tea-svc are rewritten (Note that the /tea requests are redirected to /tea/).
/tea/ -> /
/tea/abc -> /abc
Below are the examples of how the URI of requests to the coffee-svc are rewritten (Note that the /coffee requests are redirected to /coffee/).
/coffee/ -> /beans/
/coffee/abc -> /beans/abc