How to fix "bad certificate error" in traefik 2.0? - kubernetes

Question

I'm setting up traefik 2.0-alpha with Let's Encrypt certificates inside GKE, but now i'm in stupor with "server.go:3012: http: TLS handshake error from 10.32.0.1:2244: remote error: tls: bad certificate" error in container logs.
Connections via http working fine. When i try to connect via https, traefik return 404 with its own default certificates.
I found same problem for traefik v1 on github. Solution was in adding to config:
InsecureSkipVerify = true
passHostHeader = true
It doesn't help me.
Here is my configmap
apiVersion: v1
kind: ConfigMap
metadata:
name: traefik-ingress-configmap
namespace: kube-system
data:
traefik.toml: |
[Global]
sendAnonymousUsage = true
debug = true
logLevel = "DEBUG"
[ServersTransport]
InsecureSkipVerify = true
[entrypoints]
[entrypoints.web]
address = ":80"
[entryPoints.web-secure]
address = ":443"
[entrypoints.mongo-port]
address = ":11111"
[providers]
[providers.file]
[tcp] # YAY!
[tcp.routers]
[tcp.routers.everything-to-mongo]
entrypoints = ["mongo-port"]
rule = "HostSNI(`*`)" # Catches every request
service = "database"
[tcp.services]
[tcp.services.database.LoadBalancer]
[[tcp.services.database.LoadBalancer.servers]]
address = "mongodb-service.default.svc:11111"
[http]
[http.routers]
[http.routers.for-jupyterx-https]
entryPoints = ["web-secure"] # won't listen to entrypoint mongo-port
# rule = "Host(`clients-ui.ddns.net`)"
# rule = "Path(`/jupyterx`)" # abo /jupyterx/*
rule = "PathPrefix(`/jupyterx`)"
service = "jupyterx"
[http.routers.for-jupyterx.tls]
[http.routers.for-jupyterx-http]
entryPoints = ["web"] # won't listen to entrypoint mongo-port
# rule = "Host(`clients-ui.ddns.net`)"
# rule = "Path(`/jupyterx`)" # abo /jupyterx/*
rule = "PathPrefix(`/jupyterx`)"
service = "jupyterx"
[http.services]
[http.services.jupyterx.LoadBalancer]
PassHostHeader = true
# InsecureSkipVerify = true
[[http.services.jupyterx.LoadBalancer.servers]]
url = "http://jupyter-service.default.svc/"
weight = 100
[acme] # every router with TLS enabled will now be able to use ACME for its certificates
email = "account#mail.com"
storage = "acme.json"
# onHostRule = true # dynamic generation based on the Host() & HostSNI() matchers
caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
[acme.httpChallenge]
entryPoint = "web" # used during the challenge
And DaemonSet yaml:
# ---
# apiVersion: v1
# kind: ServiceAccount
# metadata:
# name: traefik-ingress-controller
# namespace: kube-system
---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: traefik-ingress-controller
namespace: kube-system
labels:
k8s-app: traefik-ingress-lb
spec:
template:
metadata:
labels:
k8s-app: traefik-ingress-lb
name: traefik-ingress-lb
spec:
serviceAccountName: traefik-ingress-controller
terminationGracePeriodSeconds: 60
volumes:
# - name: traefik-ui-tls-cert
# secret:
# secretName: traefik-ui-tls-cert
- name: traefik-ingress-configmap
configMap:
name: traefik-ingress-configmap
containers:
- image: traefik:2.0 # The official v2.0 Traefik docker image
name: traefik-ingress-lb
ports:
- name: http
containerPort: 80
hostPort: 80
- name: web-secure
containerPort: 443
hostPort: 443
- name: admin
containerPort: 8080
- name: mongodb
containerPort: 11111
volumeMounts:
- mountPath: "/config"
name: "traefik-ingress-configmap"
args:
- --api
- --configfile=/config/traefik.toml
---
kind: Service
apiVersion: v1
metadata:
name: traefik-ingress-service
namespace: kube-system
spec:
selector:
k8s-app: traefik-ingress-lb
ports:
- protocol: TCP
port: 80
name: web
- protocol: TCP
port: 443
name: web-secure
- protocol: TCP
port: 8080
name: admin
- port: 11111
protocol: TCP
name: mongodb
type: LoadBalancer
loadBalancerIP: 1.1.1.1
Have any suggestions, how to fix it?

Answer 1

Due to lack of manuals for traefik2.0-alpha, config file was written using only manual from traefik official page.
There is a "routers for HTTP & HTTPS" configuration example here https://docs.traefik.io/v2.0/routing/routers/ look like:
[http.routers]
[http.routers.Router-1-https]
rule = "Host(`foo-domain`) && Path(`/foo-path/`)"
service = "service-id"
[http.routers.Router-1.tls] # will terminate the TLS request
[http.routers.Router-1-http]
rule = "Host(`foo-domain`) && Path(`/foo-path/`)"
service = "service-id"
But working config looks like:
[http.routers]
[http.routers.Router-1-https]
rule = "Host(`foo-domain`) && Path(`/foo-path/`)"
service = "service-id"
[http.routers.Router-1-https.tls] # will terminate the TLS request
[http.routers.Router-1-http]
rule = "Host(`foo-domain`) && Path(`/foo-path/`)"
service = "service-id"
So, in my config string
[http.routers.for-jupyterx.tls]
should be changed on
[http.routers.for-jupyterx-https.tls]