shawnliujw/serverless-kubernetes-sample

serverless deployment in kubernetes

kubernetes serverless sample

serverless sample in kubernetes , here will use kubeless and its serverless plugin

• the serverless plugin for kubeless now only support the following runtimes Node.js,Python,Ruby

Supported Runtimes
ballerina0.981.0, dotnetcore2.0, dotnetcore2.1, go1.10, java1.8, nodejs6, nodejs8, php7.2, python2.7, python3.4, python3.6, python3.7, ruby2.3, ruby2.4, ruby2.5, jvm1.8, nodejs_distroless8, nodejsCE8, vertx1.8

Preparation

• Ensure you have available kubernetes cluster . See Setup Kubernetes By Kubeadm if you don't have.
• Install serverless, see the guide

Install Kubeless

export RELEASE=$(curl -s https://api.github.com/repos/kubeless/kubeless/releases/latest | grep tag_name | cut -d '"' -f 4)
export OS=$(uname -s| tr '[:upper:]' '[:lower:]')

curl -OL https://github.com/kubeless/kubeless/releases/download/$RELEASE/kubeless_$OS-amd64.zip && \
unzip kubeless_$OS-amd64.zip && \
sudo mv bundles/kubeless_$OS-amd64/kubeless /usr/local/bin/

Setup

kubectl create ns kubeless
kubectl create -f https://github.com/kubeless/kubeless/releases/download/$RELEASE/kubeless-non-rbac-$RELEASE.yaml
kubectl get pods -n kubeless
kubectl get deployment -n kubeless
kubectl get customresourcedefinition

See More Here

Test

Java

• cd java/ && sh deploy.sh
• Check the deployment status executing kubeless function ls hello-java wait a few seconds for the

Nodejs

• cd nodejs && sls deploy
• run sls invoke --function hello-nodejs to check the response

Python

• cd python && sls deploy
• run sls invoke --function hello-python to check the response