Error "Not Found" during "invoke" verb? error invoking at least Ruby or Python

[kingdonb]

I'm trying to get this working and I seem to have hit a bug in the serverless client, or kubeless plugin to it.

$ serverless invoke -f hello -l
Serverless: Calling function: hello...

  Error --------------------------------------------------

  Not Found

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com

  Your Environment Information -----------------------------
     OS:                     darwin
     Node Version:           10.4.1
     Serverless Version:     1.27.3

$ kubeless function call hello
v1.0.0-alpha.6

So it looks like my "hello" function is installed correctly. I can call it directly with the 'kubeless' function call verb. I started with the example from serverless-ruby repo which is meant for AWS and simplified it to use the serverless-ruby plugin instead, but I wound up swapping almost everything out for the version.rb contents in the ruby-get example here, in this project.

These are my repo contents:

serverless.yml

service: index

provider:
  name: kubeless
  runtime: ruby2.4

plugins:
  - serverless-kubeless

functions:
  hello:
    handler: index.hello

package.json

{
  "name": "hello",
  "version": "1.0.0",
  "description": "Example function for serverless kubeless",
  "dependencies": {
    "serverless-kubeless": "^0.4.0"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": ""
}

index.rb

def hello(event, context)
  require "net/https"
  require "uri"
  require "json"

  # Fetch release info
  uri = URI.parse("https://api.github.com/repos/bitnami/kubeless/releases")
  http = Net::HTTP.new(uri.host, uri.port)
  request = Net::HTTP::Get.new(uri.request_uri)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_PEER
  response = http.request(request)

  # Follow redirects if needed
  if response.code == "301"
    response = Net::HTTP.get_response(URI.parse(response.header['location']))
  end

  # Parse response
  output = JSON.parse(response.body)
  puts output
  # Create a Hash for output
  output_hash = { :version => output[0]['tag_name'] }

  return output_hash[:version]
end

The examples are the same if I try with the serverless-kubeless examples/get-ruby itself.

I can invoke the functions through the kubeless client but not the serverless invoker. At first I thought it was actually the fact that I was missing kubeless client itself, but now I have it and I still have the issue with serverless invoke as below:

~/projects/serverless-kubeless/examples/get-ruby (master u=)$ serverless invoke -f version
Serverless: Calling function: version...

  Error --------------------------------------------------

  Not Found

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com

  Your Environment Information -----------------------------
     OS:                     darwin
     Node Version:           10.4.1
     Serverless Version:     1.27.3

~/projects/serverless-kubeless/examples/get-ruby (master u=)$ kubeless function call version
v1.0.0-alpha.6

I think "Not Found" must be coming from somewhere, in case the stack trace is helpful here it is from SLS_DEBUG=*

kbarret8@kbarret8-mbp:~/projects/serverless-kubeless/examples/get-ruby (master u=)$ export SLS_DEBUG='*'
kbarret8@kbarret8-mbp:~/projects/serverless-kubeless/examples/get-ruby (master u=)$ serverless invoke -f version
Serverless: Load command run
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command create
Serverless: Load command install
Serverless: Load command package
Serverless: Load command deploy
Serverless: Load command deploy:function
Serverless: Load command deploy:list
Serverless: Load command deploy:list:functions
Serverless: Load command invoke
Serverless: Load command invoke:local
Serverless: Load command info
Serverless: Load command logs
Serverless: Load command login
Serverless: Load command logout
Serverless: Load command metrics
Serverless: Load command print
Serverless: Load command remove
Serverless: Load command rollback
Serverless: Load command rollback:function
Serverless: Load command slstats
Serverless: Load command plugin
Serverless: Load command plugin
Serverless: Load command plugin:install
Serverless: Load command plugin
Serverless: Load command plugin:uninstall
Serverless: Load command plugin
Serverless: Load command plugin:list
Serverless: Load command plugin
Serverless: Load command plugin:search
Serverless: Load command emit
Serverless: Load command config
Serverless: Load command config:credentials
Serverless: Load command info
Serverless: Load command logs
Serverless: Invoke invoke
Serverless: Calling function: version...

  Error --------------------------------------------------

  Not Found

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

  Stack Trace --------------------------------------------

Error: Not Found
    at Request.parseReponse [as _callback] (/Users/kbarret8/Desktop/devel/serverless-kubeless/examples/get-ruby/node_modules/serverless-kubeless/lib/invoke.js:110:18)
    at Request.self.callback (/Users/kbarret8/Desktop/devel/serverless-kubeless/examples/get-ruby/node_modules/request/request.js:185:22)
    at Request.emit (events.js:182:13)
    at Request.EventEmitter.emit (domain.js:442:20)
    at Request.<anonymous> (/Users/kbarret8/Desktop/devel/serverless-kubeless/examples/get-ruby/node_modules/request/request.js:1157:10)
    at Request.emit (events.js:182:13)
    at Request.EventEmitter.emit (domain.js:442:20)
    at IncomingMessage.<anonymous> (/Users/kbarret8/Desktop/devel/serverless-kubeless/examples/get-ruby/node_modules/request/request.js:1079:12)
    at Object.onceWrapper (events.js:273:13)
    at IncomingMessage.emit (events.js:187:15)
    at IncomingMessage.EventEmitter.emit (domain.js:442:20)
    at endReadableNT (_stream_readable.js:1081:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)
From previous event:
    at PluginManager.invoke (/usr/local/lib/node_modules/serverless/lib/classes/PluginManager.js:372:22)
    at PluginManager.run (/usr/local/lib/node_modules/serverless/lib/classes/PluginManager.js:403:17)
    at variables.populateService.then (/usr/local/lib/node_modules/serverless/lib/Serverless.js:102:33)
    at runCallback (timers.js:696:18)
    at tryOnImmediate (timers.js:667:5)
    at processImmediate (timers.js:649:5)
    at process.topLevelDomainCallback (domain.js:121:23)
From previous event:
    at Serverless.run (/usr/local/lib/node_modules/serverless/lib/Serverless.js:89:74)
    at serverless.init.then (/usr/local/lib/node_modules/serverless/bin/serverless:42:50)

  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com

  Your Environment Information -----------------------------
     OS:                     darwin
     Node Version:           10.4.1
     Serverless Version:     1.27.3

I get the exact same result from the Python example, I can call the function through kubeless function but the serverless client does know know where to find it.

Here's my package-lock.json in a gist too, in case that is helpful:

$ cat package-lock.json

...

https://gist.github.com/kingdonb/d87bfefbee7de89a431082b429211b1b

[andresmgot]

Hi @kingdonb, I think I found the issue, are you running Kubeless in Kubernetes 1.10?

[kingdonb]

That's right, latest minikube has v1.10 kubelet

[andresmgot]

we have released v0.4.4, that should fix your issue

[kingdonb]

Great! Thanks, I will test and close when I see it too.

[kingdonb]

It works!