Traefik reporting middleware not found but it works

Traefik Traefik v2
,
1

I installed this plugin and I configured it like instructions says. I have a traefik.yml file where I setup the experimental option and added the plugin option along docker and file:

experimental:
  plugins:
    traefik_dynamic_public_whitelist:
      moduleName: "github.com/Shoggomo/traefik_dynamic_public_whitelist"
      version: "v0.1.5"

entryPoints:
  http:
    address: ":80"
  
  https:
    address: ":443"
    forwardedHeaders:
      trustedIPs:
        - 173.245.48.0/20
        - 103.21.244.0/22
        - 103.22.200.0/22
        - 103.31.4.0/22
        - 141.101.64.0/18
        - 108.162.192.0/18
        - 190.93.240.0/20
        - 188.114.96.0/20
        - 197.234.240.0/22
        - 198.41.128.0/17
        - 162.158.0.0/15
        - 104.16.0.0/13
        - 104.24.0.0/14
        - 172.64.0.0/13
        - 131.0.72.0/22

providers:
  docker:
    watch: true
    exposedByDefault: false
    network: traefik
  file:
    directory: /configs
    watch: true
  plugin:
    traefik_dynamic_public_whitelist:
      pollInterval: "300s"                                 # optional, default is "300s"
      ipv4Resolver: "https://api4.ipify.org/?format=text"  # optional, default is "https://api4.ipify.org?format=text" (needs to provide only the public ip on request)               # optional, additional source ranges, that should be accepted
      ipStrategy:                                          # optional, see https://doc.traefik.io/traefik/middlewares/http/ipwhitelist/#configuration-options for more info
        excludedIPs:
          - 173.245.48.0/20
          - 103.21.244.0/22
          - 103.22.200.0/22
          - 103.31.4.0/22
          - 141.101.64.0/18
          - 108.162.192.0/18
          - 190.93.240.0/20
          - 188.114.96.0/20
          - 197.234.240.0/22
          - 198.41.128.0/17
          - 162.158.0.0/15
          - 104.16.0.0/13
          - 104.24.0.0/14
          - 172.64.0.0/13
          - 131.0.72.0/22   

log:
  level: ERROR

Then I have a config for traefik itself:

http:
  routers:
    api:
      rule: "Host(`traefik.example.com`)"
      entrypoints:
        - https
      middlewares:
        - public_ipwhitelist@plugin-traefik_dynamic_public_whitelist
        - middlewares-basic-auth@file
      service: "api@internal"

When I run traefik I get:

time="2024-02-09T11:29:16+01:00" level=error msg="middleware \"public_ipwhitelist@plugin-traefik_dynamic_public_whitelist\" does not exist" entryPointName=https routerName=api@file
time="2024-02-09T11:29:15+01:00" level=info msg="Configuration loaded from file: /traefik.yml"

I tried a lot of combinations but at the end, it just works. Yes, plugin is working, loaded and everything is fine:

Screenshot 2024-02-09 113153
Screenshot 2024-02-09 1131531320×1089 41.8 KB

I am not sure if this is a bug or a race condition in the configuration but here I am :slight_smile:

2

It’s probably happening because one provider is loaded faster, it’s not found, then it’s loaded and used. Maybe switch log level to debug to check.