RabbitMQ api hosted in a subpath is truncated to http://host/api/ when it shouldbe http://host/subpath/api #2634
Description
Report
We are hosting rabbitmq with a subpath due to ingress exposed as a subpath .We do it with the following setting :
management.path_prefix = /rabbit
in bitnami helm chart :
extraConfiguration: |-
management.path_prefix = /rabbitThis causes the api to also be hosted at http://host/rabbit/api
Problem is this resset of Path parsedURL.Path = "" here : https://github.com/kedacore/keda/blob/v2.6.1/pkg/scalers/rabbitmq_scaler.go#L426
We are using this configuration in keda ScaledSecret :
triggers:
- type: rabbitmq
metadata:
host: http://user:[email protected]:15672/rabbit/
mode: MessageRate
protocol: auto
queueName: My-queue
value: "1"
vhostName: /Expected Behavior
Setting the host path is preserved and not truncated.
Actual Behavior
rabbitmq http subpath is truncated
Steps to Reproduce the Problem
- Install https://bitnami.com/stack/rabbitmq/helm with this configuration
extraConfiguration: |-
management.path_prefix = /rabbit- configure keda with rabbitmq MessageRate
Logs from KEDA operator
keda operator logs
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).startScaleLoop │
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).startScaleLoop
/workspace/pkg/scaling/scale_handler.go:149
1.6448533659252813e+09 ERROR scalehandler Error getting scale decision {"scaledobject.Name": "vbc-vbs-scaledobject", "scaledObject.Namespace": "dev", "scaleTarget.Name": "vbc-vbs-contrib", "error": "error inspecting rabbitMQ: error requesting rabbitMQ API status: 404 Not Found, response: {\"error\":\"Object Not Found\",\"reason\":\"Not Found\"}, from: http://user:[email protected]:15672/api/queues/%!F(MISSING)/VBUS-req-queue"}
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).checkScalers
/workspace/pkg/scaling/scale_handler.go:278
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).startScaleLoop
/workspace/pkg/scaling/scale_handler.go:149
1.6448533959287195e+09 ERROR scalehandler Error getting scale decision {"scaledobject.Name": "vbc-vbs-scaledobject", "scaledObject.Namespace": "dev", "scaleTarget.Name": "vbc-vbs-contrib", "error": "error inspecting rabbitMQ: error requesting rabbitMQ API status: 404 Not Found, response: {\"error\":\"Object Not Found\",\"reason\":\"Not Found\"}, from: http://user:[email protected]:15672/api/queues/%!F(MISSING)/VBUS-req-queue"}
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).checkScalers
/workspace/pkg/scaling/scale_handler.go:278
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).startScaleLoop
/workspace/pkg/scaling/scale_handler.go:149
keda operator metrics pod logs:
E0214 15:44:00.029030 1 provider.go:124] keda_metrics_adapter/provider "msg"="error getting metric for scaler" "error"="error inspecting rabbitMQ: error requesting rabbitMQ API status: 404 Not Found, response: {\"error\":\"Object Not Found\",\"reason\":\"Not Found\"}, from: http://user:[email protected]:15672/api/queues/%!F(MISSING)/VBUS-req-queue" "scaledObject.Name"="vbc-vbs-scaledobject" "scaledObject.Namespace"="dev" "scaler"={}
E0214 15:44:00.029088 1 status.go:71] apiserver received an error that is not an metav1.Status: &errors.errorString{s:"no matching metrics found for s0-rabbitmq-vbus-req-queue"}: no matching metrics found for s0-rabbitmq-vbus-req-queue
E0214 15:44:15.052886 1 provider.go:124] keda_metrics_adapter/provider "msg"="error getting metric for scaler" "error"="error inspecting rabbitMQ: error requesting rabbitMQ API status: 404 Not Found, response: {\"error\":\"Object Not Found\",\"reason\":\"Not Found\"}, from: http://user:[email protected]:15672/api/queues/%!F(MISSING)/VBUS-req-queue" "scaledObject.Name"="vbc-vbs-scaledobject" "scaledObject.Namespace"="dev" "scaler"={}
E0214 15:44:15.052967 1 status.go:71] apiserver received an error that is not an metav1.Status: &errors.errorString{s:"no matching metrics found for s0-rabbitmq-vbus-req-queue"}: no matching metrics found for s0-rabbitmq-vbus-req-queue
ScaledObject k8s event message :
error inspecting rabbitMQ: error requesting rabbitMQ API status: 404 Not Found, response: {"error":"Object Not Found","reason":"Not ││ Found"}, from: http://user:[email protected]:15672/api/queues/%!F(MISSING)/My-queue
From the message we can clearly see that rabbit subpath is truncated
KEDA Version
2.6.1
Kubernetes Version
1.22
Platform
Microsoft Azure
Scaler Details
RabbitMQ
Anything else?
No response