How to set up https on kubernetes bare metal using traefik ingress controller - kubernetes

Question

I'm running a kubernetes cluster which consists of three nodes and brilliantly works, but it's time to make my web application secure, so I deployed an ingress controller(traefik). But I was unable to find instructions for setting up https on it. I know most of things I will have to do, like setting up a "secret"(container with certs) etc. but I was wondering how to configure my ingress controller and all files related to it so I would be able to use secure connection
I have already configured ingress controller and created some frontends and backends. Also I configured nginx server(It's actually a web application I'm running) to work on 443 port
My web application deployment
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
spec:
strategy:
type: Recreate
selector:
matchLabels:
app: nginx
replicas: 3 # tells deployment to run 3 pods matching the template
template: # create pods using pod definition in this template
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: ilchub/my-nginx
ports:
- containerPort: 443
tolerations:
- key: "primary"
operator: Equal
value: "true"
effect: "NoSchedule"
Traefik ingress controller deployment code
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
name: traefik-ingress
namespace: kube-system
labels:
k8s-app: traefik-ingress-lb
spec:
replicas: 1
selector:
matchLabels:
k8s-app: traefik-ingress-lb
template:
metadata:
labels:
k8s-app: traefik-ingress-lb
name: traefik-ingress-lb
spec:
serviceAccountName: traefik-ingress
terminationGracePeriodSeconds: 60
containers:
- image: traefik
name: traefik-ingress-lb
ports:
- name: http
containerPort: 80
- name: https
containerPort: secure
- name: admin
containerPort: 8080
args:
- --api
- --kubernetes
- --logLevel=INFO
Ingress for traefik dashboard
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: traefik-web-ui
namespace: kube-system
spec:
rules:
- host: cluster.aws.ctrlok.dev
http:
paths:
- path: /
backend:
serviceName: traefik-web-ui
servicePort: web
External expose related config
kind: Service
apiVersion: v1
metadata:
name: traefik-ingress-service
namespace: kube-system
spec:
selector:
k8s-app: traefik-ingress-lb
ports:
- protocol: TCP
port: 80
nodePort: 30036
name: web
- protocol: TCP
port: 443
nodePort: 30035
name: secure
- protocol: TCP
port: 8080
nodePort: 30034
name: admin
type: NodePort
What I want to do is securing my application which is already running. Final result has to be a webpage running over https

Answer 1

Actually you have 3 ways to configure Traefik to use https to communicate with backend pods:
If the service port defined in the ingress spec is 443 (note that you can still use targetPort to use a different port on your pod).
If the service port defined in the ingress spec has a name that starts with https (such as https-api, https-web or just https).
If the ingress spec includes the annotation ingress.kubernetes.io/protocol: https.
If either of those configuration options exist, then the backend communication protocol is assumed to be TLS, and will connect via TLS automatically.
Also additional authentication annotations should be added to the Ingress object, like:
ingress.kubernetes.io/auth-tls-secret: secret
And of course, add a TLS Certificate to the Ingress