If Traefik is behind a load balancer, it won't be able to get the Real IP from the external client by checking the remote IP address.
This plugin solves this issue by overwriting the X-Real-Ip with an IP from the X-Forwarded-For or Cf-Connecting-Ip (if from Cloudflare) header. The real IP will be the first one that is not included in any of the CIDRs passed as the ExcludedNets parameter. The evaluation of the X-Forwarded-For or Cf-Connecting-Ip (if from Cloudflare) IPs will go from the last to the first one.
#
pilot:
token: xxxx
experimental:
plugins:
traefik-real-ip:
modulename: github.com/soulbalz/traefik-real-ip
version: v1.0.3
http:
routers:
my-router:
rule: Path(`/whoami`)
service: service-whoami
entryPoints:
- http
middlewares:
- traefik-real-ip
services:
service-whoami:
loadBalancer:
servers:
- url: http://127.0.0.1:5000
middlewares:
traefik-real-ip:
plugin:
traefik-real-ip:
excludednets:
- "1.1.1.1/24"
kind: Deployment
apiVersion: apps/v1
metadata:
namespace: default
name: traefik
labels:
app: traefik
spec:
replicas: 1
selector:
matchLabels:
app: traefik
template:
metadata:
labels:
app: traefik
spec:
terminationGracePeriodSeconds: 60
serviceAccountName: traefik-ingress-controller
containers:
- name: traefik
image: traefik:v2.4
args:
- --api.insecure
- --accesslog
- --entrypoints.web.Address=:80
- --providers.kubernetescrd
- --pilot.token={YOUR_PILOT_TOKEN}
- --experimental.plugins.traefik-real-ip.modulename=github.com/soulbalz/traefik-real-ip
- --experimental.plugins.traefik-real-ip.version=v1.0.3
ports:
- name: web
containerPort: 80
- name: admin
containerPort: 8080
resources:
requests:
cpu: 300m
limits:
cpu: 500m
---
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
name: traefik-real-ip
spec:
plugin:
traefik-real-ip:
excludednets:
- "1.1.1.1/24"
---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
name: ingress-example
namespace: default
spec:
entryPoints:
- web
routes:
- kind: Rule
match: Host(`domain.ltd`) && PathPrefix(`/`)
services:
- name: example-service
port: 80
middlewares:
- name: traefik-real-ip
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Supported configurations per body
Setting | Allowed values | Required | Description |
---|---|---|---|
excludednets | []string | No | IP or IP range to exclude forward IP |
#