ingress-nginx后端pod容器获取客服端真实ip

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业务场景:
cdn-LB-ingress-nginx
创建ingres-nginx的configmap文件

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kubectl apply -f - <<EOF
apiVersion: v1
data:
  compute-full-forwarded-for: "true"
  forwarded-for-header: X-Forwarded-For
  use-forwarded-headers: "true"
kind: ConfigMap
metadata:
  labels:
    app: ingress-nginx
  name: nginx-configuration
  namespace: ingress-nginx
EOF

主要参数https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#use-forwarded-headers

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compute-full-forwarded-for: "true"
forwarded-for-header: X-Forwarded-For
use-forwarded-headers: "true"