serverless-knative
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Serverless Function Return Null in Knative
⚠️⚠️ Deployed the sample serverless function from https://www.serverless.com/framework/docs/providers/knative/guide/quick-start/ in Knative on the local machine in minikube. It deployed without any issue but when invoke with serverless invoke -f hello
return NULL.
serverless.yml
service: app
provider:
name: knative
# optional Docker Hub credentials you need if you're using local Dockerfiles as function handlers
docker:
username: ${env:DOCKER_HUB_USERNAME}
password: ${env:DOCKER_HUB_PASSWORD}
functions:
hello:
handler: hello-world.dockerfile
context: ./code
# either use a container image URL for your function `handler` as the commented out `handler`
# below shows or make sure that you update the application code and corresponding Dockerfile
# to process incoming CloudEvents event data when using the event sources listed below
# handler: gcr.io/knative-releases/github.com/knative/eventing-contrib/cmd/event_display:latest
# events:
# - custom:
# filter:
# attributes:
# type: greeting
# - kafka:
# consumerGroup: KAFKA_CONSUMER_GROUP_NAME
# bootstrapServers:
# - server1
# - server2
# topics:
# - my-topic
# - awsSqs:
# secretName: aws-credentials
# secretKey: credentials
# queue: QUEUE_URL
# - gcpPubSub:
# project: knative-hackathon
# topic: foo
# - cron:
# schedule: '* * * * *'
# data: '{"message": "Hello world from a Cron event source!"}'
plugins:
- serverless-knative
FULL COMMAND NAME
output
serverless info
Service Information
service: app
namespace: sls-app-dev
ingress ip: 172.17.0.5
Deployed functions
hello:
- url: app-hello.sls-app-dev.example.com
serverless invoke -f hello
Return NULL
Installed version
Framework Core: 1.74.1
Plugin: 3.6.15
SDK: 2.3.1
Components: 2.31.12
But the sample application in Knative documentation at https://knative.dev/docs/serving/samples/hello-world/helloworld-python/index.html works exactly fine.
can you show ksvc?
Output of kubectl get ksvc -n sls-app-dev
NAME URL LATESTCREATED LATESTREADY READY REASON
app-hello http://app-hello.sls-app-dev.example.com app-hello-7mdzv False RevisionMissing