Kubernetes - 环境变量作为 API url

Question

So I have an API that's the gateway for two other API's. Using docker in wsl 2 (ubuntu), when I build my Gateway API.

docker run -d -p 8080:8080 -e A_API_URL=$A_API_URL B_API_URL=$B_API_URL  registry:$(somePort)//gateway  

I have 2 environnement variables that are the API URI of the two API'S. I just dont know how to make this work in the config.

 env:
    - name: A_API_URL
      value: <need help>
    - name: B_API_URL
      value: <need help>

I get 500 or 502 errors when accessing then in the network. I tried specifyng the value of the env var as:

• their respective service's name.
• the complete URI (http://$(addr):$(port)
• the relative path : /something/anotherSomething

Each API is deployed with a Deployment controller and a service I'm at a lost, any help is appreciated

Answer 1

You just have to hardwire them. Kubernetes doesn't know anything about your local machine. There are templating tools like Helm that could inject things like Bash is in your docker run example but generally not a good idea since if anyone other than you runs the same command, they could see different results. The values should look like http://servicename.namespacename.svc.cluster.local:port/whatever . So if the service is named foo in namespace default with port 8000 and path /api, http://foo.default.svc.cluster.local:8000/api .