Add query parameters to service

Traefik Traefik v2 (latest)
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1

I have a server defined that requires a query parameter to be passed into every request. How do I add this query parameter to my services.servers ?

            services:
              amb:
                loadBalancer:
                  servers:
                  - url: https://my-url.com?myquery=parameter
2

Paths in the servers' url have no effect. If you want the requests to be sent to a specific path on your servers, configure your routers to use a corresponding middleware (e.g. the AddPrefix or ReplacePath) middlewares.

(Source)

3

The problem with AddPrefix and Replace path is that they don't support query parameters. These are just for paths in the URI.

In the AddPrefix docs, it says " It should include a leading slash (/ )."

But thats not a query paramter. A query parameter is a question mark: "?query=parameter"

4

Can you use ReplacePathRegex middleware to add the parameter to the original request?

5

I'm trying that now and doesn't seem to be working:

          http:
            middlewares:
              addon:
                replacePathRegex:
                  regex: ^/.*
                  replacement: /$1\?billingtoken\=my-token-here
            routers:
              amb:
                middlewares:
                - addon
                rule: Path(`/`)
                service: amb
            services:
              amb:
                loadBalancer:
                  healthCheck:
                    path: /health/v1/node
                    interval: 10s
                  servers:
                  - url: https://nd-x.t.x.x.us-east-1.amazonaws.com

The addon middleware doesn't seem to be working because the health check still fails as if its not getting the query parameter passed in

6

I would not expect the health check to run through middlewares.

Set up a traefik/whoami service to echo http headers and see what is been sent.