Kubeflow sdk - error in client.list_experiments() - kubeflow

Question

I'm following the example in docs (https://www.kubeflow.org/docs/components/pipelines/sdk/connect-api/) but am getting an error when trying to access the experiments or runs (when trying to list and/or create them)
I've port-forwarded ml-pipeline-ui:
kubectl port-forward svc/ml-pipeline-ui 3000:80 --namespace kubeflow
The following results in an error:
import kfp
client = kfp.Client(host='http://localhost:3000')
print(client.list_experiments())
The error I get from client.list_experiments():
> ApiException: (500) Reason: Internal Server Error HTTP response
> headers: HTTPHeaderDict({'X-Powered-By': 'Express', 'content-type':
> 'application/json', 'trailer': 'Grpc-Trailer-Content-Type', 'date':
> 'Thu, 22 Jul 2021 21:09:12 GMT', 'x-envoy-upstream-service-time': '7',
> 'server': 'envoy', 'connection': 'close', 'transfer-encoding':
> 'chunked'}) HTTP response body: {"error":"Internal error:
> Unauthenticated: Request header error: there is no user identity
> header.: Request header error: there is no user identity
> header.\nFailed to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).canAccessExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:249\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:148\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357\nFailed
> to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:150\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357","code":13,"message":"Internal
> error: Unauthenticated: Request header error: there is no user
> identity header.: Request header error: there is no user identity
> header.\nFailed to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).canAccessExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:249\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:148\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357\nFailed
> to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:150\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357","details":[{"#type":"type.googleapis.com/api.Error","error_message":"Internal
> error: Unauthenticated: Request header error: there is no user
> identity header.: Request header error: there is no user identity
> header.\nFailed to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).canAccessExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:249\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:148\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357\nFailed
> to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:150\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357","error_details":"Internal
> error: Unauthenticated: Request header error: there is no user
> identity header.: Request header error: there is no user identity
> header.\nFailed to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).canAccessExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:249\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:148\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357\nFailed
> to authorize with API resource
> references\ngithub.com/kubeflow/pipelines/backend/src/common/util.Wrap\n\t/go/src/github.com/kubeflow/pipelines/backend/src/common/util/error.go:275\ngithub.com/kubeflow/pipelines/backend/src/apiserver/server.(*ExperimentServer).ListExperiment\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/server/experiment_server.go:150\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler.func1\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:748\nmain.apiServerInterceptor\n\t/go/src/github.com/kubeflow/pipelines/backend/src/apiserver/interceptor.go:30\ngithub.com/kubeflow/pipelines/backend/api/go_client._ExperimentService_ListExperiment_Handler\n\t/go/src/github.com/kubeflow/pipelines/backend/api/go_client/experiment.pb.go:750\ngoogle.golang.org/grpc.(*Server).processUnaryRPC\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1210\ngoogle.golang.org/grpc.(*Server).handleStream\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:1533\ngoogle.golang.org/grpc.(*Server).serveStreams.func1.2\n\t/go/pkg/mod/google.golang.org/grpc#v1.34.0/server.go:871\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1357"}]}
However, listing the pipelines works:
import kfp
client = kfp.Client(host='http://localhost:3000')
print(client.list_pipelines())
I have verified that the port-forwarding worked - I am able to access the UI at http://localhost:3000/ and can see the pipelines. Any ideas on where I am going wrong with the experiments? The example in the docs seems pretty straightforward but something is not working.

Answer 1

I received feedback from the developers (see the closed issue). This is one of the current caveats of multi-user mode (see documentation). This usage is now being supported through #5138.

Answer 2

Found How to do programmatic authentication with Dex? #140. By modifying the code as per the solution provided there, it worked.
Need follow the steps at Connect to Kubeflow Pipelines from outside your cluster first to be able to connect via localhost:3000.
import requests
import kfp
import kfp.dsl as dsl
from kfp.components import create_component_from_func
# Does not work
#import kfp
#client = kfp.Client(host='http://localhost:3000', namespace='kubeflow')
#print(client.list_experiments(namespace='kubeflow'))
# --------------------------------------------------------------------------------
# https://github.com/kubeflow/kfctl/issues/140#issuecomment-719894529
# How to do programmatic authentication with Dex? #140
# --------------------------------------------------------------------------------
HOST = "http://localhost:8080/"
USERNAME = "user#example.com"
PASSWORD = "12341234"
NAMESPACE = "kubeflow-user-example-com"
session = requests.Session()
response = session.get(HOST)
headers = {
"Content-Type": "application/x-www-form-urlencoded",
}
data = {"login": USERNAME, "password": PASSWORD}
session.post(response.url, headers=headers, data=data)
session_cookie = session.cookies.get_dict()["authservice_session"]
client = kfp.Client(
host=f"{HOST}/pipeline",
cookies=f"authservice_session={session_cookie}",
namespace=NAMESPACE,
)
print(client.list_pipelines())
def add(a: float, b: float) -> float:
'''Calculates sum of two arguments'''
return a + b
add_op = create_component_from_func(
add, output_component_file='add_component.yaml')
#dsl.pipeline(
name='Addition pipeline',
description='An example pipeline that performs addition calculations.'
)
def add_pipeline(
a='1',
b='7',
):
# Passes a pipeline parameter and a constant value to the `add_op` factory
# function.
first_add_task = add_op(a, 4)
# Passes an output reference from `first_add_task` and a pipeline parameter
# to the `add_op` factory function. For operations with a single return
# value, the output reference can be accessed as `task.output` or
# `task.outputs['output_name']`.
second_add_task = add_op(first_add_task.output, b)
# Specify argument values for your pipeline run.
arguments = {'a': '7', 'b': '8'}
# Create a pipeline run, using the client you initialized in a prior step.
#client.create_run_from_pipeline_func(add_pipeline, arguments=arguments)
kfp.compiler.Compiler().compile(
pipeline_func=add_pipeline,
package_path='pipeline.yaml')
Apparently the multi user isolation implementation induced issues, and it seems the documentations under Pipelines SDK have not been updated.