Lets encrypt certificate doesn't work

Traefik Traefik v2
1

I have following Traefik configuration

  traefik.toml: |
    ## static configuration
    [global]
      checkNewVersion = true

    [entryPoints]
      [entryPoints.web]
        address = ":80"
      [entryPoints.websecure]
        address = ":443"
      [entryPoints.internal]
        address = ":4080"
      [entryPoints.internalsecure]
        address = ":4043"

    [providers]
      [providers.kubernetesCRD]
      [providers.file]
        directory = "/etc/traefik/providers/"
        watch = true
      [providers.kubernetesIngress]
        ingressClass = "traefik-cert-manager"

    [log]
      level = "INFO"

    [accessLog]

    [api]
      insecure = true
      dashboard = true
      debug = true

    [metrics]
      [metrics.prometheus]
        buckets = [0.1,0.3,1.2,5.0]
        addEntryPointsLabels = true
        addServicesLabels = true

    [ping]

    [certificatesResolvers]
      [certificatesResolvers.default]
        [certificatesResolvers.default.acme]
          email = "admin@domain.com"
          caServer = "https://acme-v02.api.letsencrypt.org/directory"
          storage = "/etc/traefik/storage/acme.json"
          [certificatesResolvers.default.acme.dnsChallenge]
            provider = "route53"
            delayBeforeCheck = 0
            resolvers = ["1.1.1.1:53", "8.8.8.8:53"]

  dynamic.toml: |
    ## dynamic configuration

    [[tls.certificates]]
      certFile = "/certs/tls.crt"
      keyFile = "/certs/tls.key"
      stores = ["default"]

    [tls.stores]
      [tls.stores.default]
        [tls.stores.default.defaultCertificate]
          certFile = "/certs/tls.crt"
          keyFile  = "/certs/tls.key"

Then I have cert-manager to get sub domain specific certificates such as

*.dev.domain.com
*.qa.domain.com
*.staging.domain.com

All host with *.dev.domain.com (including dev.domain.com) able to use Lets Encrypt Certificate without any issue. But qa.domain.com & staging.domain.com is not using Lets Encrypt Certificate but uses default certificate mentioned in dynamic.toml

To further debug this I created dummy.qa.domain.com and this was able to use Lets Encrypt Certificate, but qa.domain.com was using default cert.

If I remove default cert, qa.domain.com & staging.domain.com fails to load and give certificate error.

What is wrong in my setup ?

DaemonSet 
kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: traefik
  namespace: kube-system
  labels:
    app: traefik
  annotations:
     prometheus.io/scrape: "true"
     prometheus.io/port: "8080"
spec:
  selector:
    matchLabels:
      app: traefik
  minReadySeconds: 5
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  template:
    metadata:
      labels:
        app: traefik
    spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      containers:
      - name: traefik
        image: traefik:2.4.14
        ports:
          - name: web
            containerPort: 80
          - name: websecure
            containerPort: 443
          - name: internal
            containerPort: 4080
          - name: internalsecure
            containerPort: 4043
          - name: admin
            containerPort: 8080
        readinessProbe:
          failureThreshold: 1
          httpGet:
            path: /ping
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 10
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 2
        securityContext:
          privileged: true
        env:
          - name: AWS_REGION
            valueFrom:
              configMapKeyRef:
                name: aws-config
                key: aws_region
          - name: AWS_HOSTED_ZONE_ID
            valueFrom:
              configMapKeyRef:
                name: aws-config
                key: aws_hosted_zone_id
          - name: AWS_ACCESS_KEY_ID
            valueFrom:
              secretKeyRef:
                name: aws-secret
                key: access_key
          - name: AWS_SECRET_ACCESS_KEY
            valueFrom:
              secretKeyRef:
                name: aws-secret
                key: secret_key
        volumeMounts:
          - name: traefik-config
            mountPath: /etc/traefik/traefik.toml
            subPath: traefik.toml
          - name: traefik-config
            mountPath: /etc/traefik/providers/dynamic.toml
            subPath: dynamic.toml
          - name: traefik-storage
            mountPath: /etc/traefik/storage/
          - name: cert
            readOnly: true
            mountPath: /certs/
      volumes:
      - name: traefik-config
        configMap:
          name: traefik-conf
      - name: traefik-storage
        hostPath:
          path: /tmp/traefik
          type: DirectoryOrCreate
      - name: cert
        secret:
          secretName: star-domain-com
2

Hello @rp346

I understood that you have already generated certificates using cert-manager and you are going to add them as additional certificates. If so, can you please add those 3 wildcard certificates based on the following example:

tls:
  certificates:
    - certFile: /path/to/dev.domain.cert
      keyFile: /path/to/dev.domain.key
    - certFile: /path/to/qa.domain.cert
      keyFile: /path/to/qa.domain.key
    - certFile: /path/to/staging.domain.cert
      keyFile: /path/to/staging.domain.key

More details are described here TLS - Traefik
Please also note that there are only global store certificates for all certificates.

1 Like
3

subdomain specific certificates generated by cert-manager are automatic generated & renewed, they are stored in secret not in a file.

Can I remove [[tls.certificates]] & [tls.stores] from dynamic.toml because I am using certificate generated by cert-manager ?