error sending request to function%: minikube and docker-desktop

[rkochar]

Fission/Kubernetes version

> fission version
client:
  fission/core:
    BuildDate: "2023-05-18T12:33:09Z"
    GitCommit: f955d118
    Version: v1.19.0
server:
  fission/core:
    BuildDate: "2023-05-18T12:33:09Z"
    GitCommit: f955d118
    Version: v1.19.0

> kubectl version
Client Version: v1.28.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.25.9

OS: macOS 13.5.2 22G91 arm64

Kubernetes platform (e.g. Google Kubernetes Engine)
Docker desktop and minikube

Describe the bug
Not able to complete the tutorial of "HTTP Headers" on Go or Python. The first one, hello world works because it is fission fn test. It also works with a curl $FISSION_ROUTER/hello. The following code examples don't work.

To Reproduce
Install on Docker desktop or Minikube with instructions from fission documentation. Go to Go or Python tutorial page and create the sample code and execute them as instructed.

Expected result

> curl -H "X-My-Header: Hello" $FISSION_ROUTER/headers
The header's value is 'Hello'

Actual result

> curl -H "X-My-Header: Hello" $FISSION_ROUTER/headers
error sending request to function%

> fission route list
NAME                                 METHOD URL      FUNCTION(s) INGRESS HOST PATH     TLS ANNOTATIONS NAMESPACE
402b5f7a-01aa-4b0b-9976-6dd0b931a0d6 [GET]  /hello   hello       false   *    /hello                   default
4ff82d88-c5e9-403f-bd1b-55658fba8b81 [GET]  /headers headers     false   *    /headers                 default

> fission fn test --name headers
Warning: The environment variable FISSION_ROUTER is no longer supported for this command

...

Error: error executing HTTP request: Get "http://127.0.0.1:52516/fission-function/headers": context deadline exceeded

Since this problem is repeatable on 2 different languages on minikube and on docker-desktop, hello world works for both languages on minikube and docker-desktop, I am a little confused on what might be causing this. It could be arm64. Do you know if fission works on it?

[braumzhu]

The reason is that the IP address of Minikube in Docker on Mac is not reachable. You can try pinging $FISSION_ROUTER locally.