riff is for functions

riff is for functions

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›Getting Started

Version (v0.5.x)

  • v0.6.x (snapshot)
  • v0.4.x
  • v0.3.x

Getting Started

  • Pick your environment
  • GKE
  • Minikube
  • Docker for Mac
  • Docker for Windows

Runtimes

  • Core
  • Knative
  • Streaming

Function Invokers

  • Java
  • Node.js
  • Command

CLI Reference

  • riff
  • riff doctor
  • riff completion
  • Credential

    • riff credential
    • riff credential apply
    • riff credential delete
    • riff credential list

    Build

    • riff function
    • riff function create
    • riff function delete
    • riff function list
    • riff function status
    • riff function tail
    • riff application
    • riff application create
    • riff application delete
    • riff application list
    • riff application status
    • riff application tail
    • riff container
    • riff container create
    • riff container delete
    • riff container list
    • riff container status

    Knative Runtime

    • riff knative
    • riff knative adapter
    • riff knative adapter create
    • riff knative adapter delete
    • riff knative adapter list
    • riff knative adapter status
    • riff knative deployer
    • riff knative deployer create
    • riff knative deployer delete
    • riff knative deployer list
    • riff knative deployer status
    • riff knative deployer tail

    Core Runtime

    • riff core
    • riff core deployer
    • riff core deployer create
    • riff core deployer delete
    • riff core deployer list
    • riff core deployer status
    • riff core deployer tail

    Streaming Runtime

    • riff streaming
    • riff streaming stream
    • riff streaming stream create
    • riff streaming stream delete
    • riff streaming stream list
    • riff streaming stream status
    • riff streaming processor
    • riff streaming processor create
    • riff streaming processor delete
    • riff streaming processor list
    • riff streaming processor status
    • riff streaming processor tail
    • riff streaming gateway
    • riff streaming gateway list
    • riff streaming gateway status

    In-memory Gateway

    • inmemory-gateway
    • inmemory-gateway create
    • inmemory-gateway delete
    • inmemory-gateway list
    • inmemory-gateway status

    Kafka Gateway

    • kafka-gateway
    • kafka-gateway create
    • kafka-gateway delete
    • kafka-gateway list
    • kafka-gateway status

    Pulsar Gateway

    • pulsar-gateway
    • pulsar-gateway create
    • pulsar-gateway delete
    • pulsar-gateway list
    • pulsar-gateway status
Edit

Getting Started on Docker for Windows

The following will help you get started running a riff function with Knative on Docker Community Edition for Windows.

To get started with streaming or with the core runtime, follow these steps first, and then continue with the Streaming or Core runtime docs. Runtimes can be used separately or together.

Install Docker

v0.5 of riff requires Kubernetes v1.15 or later. Docker Desktop requires Hyper-V on Windows 10 Pro.

Download the latest stable release from Docker. Kubernetes and the kubectl CLI are included.

resize the VM

Once Docker is installed and running, open Settings by right-clicking the Docker tray icon and configure your VM with 5GB of memory and 4 CPUs in the Advanced settings tab. Click on Apply.

configure Docker VM

allow sharing of the C: drive

In the File Sharing settings under Resources, enable sharing for the C drive, and enter your Windows password if prompted. This will be used for persistent volume claims to provide cache storage during function builds.

configure Docker VM

enable Kubernetes

Enable Kubernetes in the Kubernetes tab, click on Apply, and wait for the installation to complete and the cluster to start. If there is no Kubernetes tab, you may need to switch to Linux containers first.

enable Kubernetes

Confirm that your kubectl context is pointing to "docker-desktop".

kubectl config current-context

If you previously had a different cluster configured, switch your kubectl context to "docker-desktop" using a PowerShell or command window.

kubectl config use-context docker-desktop

monitor your cluster

At this point it is useful to monitor your Kubernetes cluster. If you have git bash installed, create a bash script called watch, with the following content.

#!/bin/bash
ARGS="${@}"
clear;
while(true); do
  OUTPUT=`$ARGS`
  clear
  echo -e "${OUTPUT[@]}"
  sleep 1
done

Start by watching all namespaces to confirm that Kubernetes is running.

watch kubectl get pod --all-namespaces
NAMESPACE     NAME                                     READY   STATUS    RESTARTS   AGE
docker        compose-6c67d745f6-gcjcl                 1/1     Running   0          19s
docker        compose-api-57ff65b8c7-sz7g4             1/1     Running   0          19s
kube-system   coredns-fb8b8dccf-5t7bx                  1/1     Running   1          90s
kube-system   coredns-fb8b8dccf-ltlwf                  1/1     Running   1          90s
kube-system   etcd-docker-desktop                      1/1     Running   0          23s
kube-system   kube-apiserver-docker-desktop            1/1     Running   0          39s
kube-system   kube-controller-manager-docker-desktop   1/1     Running   0          20s
kube-system   kube-proxy-6q844                         1/1     Running   0          89s
kube-system   kube-scheduler-docker-desktop            1/1     Running   0          32s

Install kapp

kapp is a simple deployment tool for Kubernetes. The riff runtime and its dependencies are provided as standard Kubernetes yaml files, that can be installed with kapp.

Download a recent binary for your platform from github. Move it into a directory on your path, and make it executable. Complete kapp installation instructions can be found here

Validate the installation.

kapp version
Client Version: 0.18.0

Succeeded

Install ytt

ytt is a tool for templating yaml. It can be used to apply changes to the distributed Kubernetes yamls files used to install riff.

Download a recent binary for your platform from github. Move it into a directory on your path, and make it executable. Complete ytt installation instructions can be found here

Validate the installation.

ytt version
Version: 0.23.0

Install the riff CLI

The riff CLI is available to download from our GitHub releases page. Once installed, check that the riff CLI version is 0.5.0.

riff --version
riff version 0.5.0 (f96cf2f5ca6fddfaf4716c0045f5f142da2d3828)

Install riff Using kapp

riff can be installed with optional runtimes. The riff build system is always installed, and is required by each runtime.

NOTE: If you have riff v0.4.0 installed then you must first uninstall that version. See instructions in the v0.4.0 documentation.

Create a namespace for kapp to store configuration:

kubectl create ns apps

install riff Build

Each kapp command below will display a list of changes and then prompt for confirmation. Press y to proceed. To auto-confirm, append a -y flag to the command.

kapp deploy -n apps -a cert-manager -f https://storage.googleapis.com/projectriff/release/0.5.0/cert-manager.yaml
kapp deploy -n apps -a kpack -f https://storage.googleapis.com/projectriff/release/0.5.0/kpack.yaml
kapp deploy -n apps -a riff-builders -f https://storage.googleapis.com/projectriff/release/0.5.0/riff-builders.yaml
kapp deploy -n apps -a riff-build -f https://storage.googleapis.com/projectriff/release/0.5.0/riff-build.yaml

install Contour ingress controller

The Contour ingress controller can be used by both Knative and Core runtimes.

# ytt is used to convert the ingress service to NodePort because Docker for Widows does not support `LoadBalancer` services.
ytt -f https://storage.googleapis.com/projectriff/release/0.5.0/contour.yaml -f https://storage.googleapis.com/projectriff/charts/overlays/service-nodeport.yaml --file-mark contour.yaml:type=yaml-plain | kapp deploy -n apps -a contour -f - -y

install riff Knative Runtime

To install riff Knative Runtime and it's dependencies:

kapp deploy -n apps -a knative -f https://storage.googleapis.com/projectriff/release/0.5.0/knative.yaml
kapp deploy -n apps -a riff-knative-runtime -f https://storage.googleapis.com/projectriff/release/0.5.0/riff-knative-runtime.yaml

verify riff installation

Resources may be missing if the corresponding runtime was not installed.

riff doctor
NAMESPACE     STATUS
default       ok
riff-system   ok

RESOURCE                                     NAMESPACE     NAME       READ      WRITE
configmaps                                   riff-system   builders   allowed   n/a
configmaps                                   default       *          allowed   allowed
secrets                                      default       *          allowed   allowed
pods                                         default       *          allowed   n/a
pods/log                                     default       *          allowed   n/a
applications.build.projectriff.io            default       *          allowed   allowed
containers.build.projectriff.io              default       *          allowed   allowed
functions.build.projectriff.io               default       *          allowed   allowed
deployers.core.projectriff.io                default       *          missing   missing
processors.streaming.projectriff.io          default       *          missing   missing
streams.streaming.projectriff.io             default       *          missing   missing
inmemoryproviders.streaming.projectriff.io   default       *          missing   missing
kafkaproviders.streaming.projectriff.io      default       *          missing   missing
pulsarproviders.streaming.projectriff.io     default       *          missing   missing
adapters.knative.projectriff.io              default       *          allowed   allowed
deployers.knative.projectriff.io             default       *          allowed   allowed

apply build credentials

Use the riff CLI to apply credentials to a container registry (if you plan on using a namespace other than default add the --namespace flag). Replace the ??? with your docker username.

riff credential apply my-creds --set-default-image-prefix --docker-hub ???

You will be prompted to provide the password.

On Windows, a known issue prevents the password prompt from working in git bash. Use the Windows PowerShell or Command terminal instead.

Create a function from a GitHub repo

This riff command (formatted for PowerShell) will pull the source code for a function from a GitHub repo, build a container image based on the node function invoker, and push the resulting image to your dockerhub repo.

riff function create square `
  --git-repo https://github.com/projectriff-samples/node-square  `
  --artifact square.js `
  --tail

After the function is created, you can get the built image by listing functions.

riff function list
NAME     LATEST IMAGE                                                                                                ARTIFACT    HANDLER   INVOKER   STATUS   AGE
square   index.docker.io/$DOCKER_ID/square@sha256:ac089ca183368aa831597f94a2dbb462a157ccf7bbe0f3868294e15a24308f68   square.js   <empty>   <empty>   Ready    1m13s

Due to differences between Windows and Linux file permissions, local builds are not supported on Windows. We suggest building from a git repository as a workaround.

Create a Knative deployer

The Knative Runtime is only available on clusters with Knative installed. Knative deployers run riff workloads using Knative resources which provide auto-scaling (including scale-to-zero) based on HTTP request traffic, and routing.

riff knative deployer create knative-square --function-ref square --ingress-policy External --tail

After the deployer is created, you can see the hostname by listing deployers.

riff knative deployer list
NAME             TYPE       REF      HOST                                 STATUS   AGE
knative-square   function   square   knative-square.default.example.com   Ready    28s

invoke the function

Knative configures HTTP routes on the ingress controller. Requests are routed by hostname.

Look up the nodePort for the ingress gateway; you should see a port value like 30086.

$INGRESS_PORT = kubectl get svc envoy-external --namespace projectcontour `
  --output 'jsonpath={.spec.ports[?(@.port==80)].nodePort}'

$INGRESS_PORT

Invoke the function by POSTing to the ingress gateway on the nodePort, passing hostname and content-type as headers.

curl http://localhost:$INGRESS_PORT/ `
  -H 'Host: knative-square.default.example.com' `
  -H 'Content-Type: application/json' `
  -d 7
49

The command above uses OSS curl which can be installed from an Admin PowerShell using choco install curl (assumes Chocolatey). Remove the built-in PowerShell curl alias with Remove-item alias:curl.

Delete the function and deployer

riff knative deployer delete knative-square
riff function delete square

Uninstalling riff

You can reset the Kubernetes cluster (this will remove all state including riff).

reset Kubernetes

Alternatively, you can use the following commands to uninstall riff:

remove any riff resources

kubectl delete riff --all-namespaces --all

remove riff Streaming Runtime

kapp delete -n apps -a riff-streaming-runtime
kapp delete -n apps -a keda

remove riff Core Runtime (if installed)

kapp delete -n apps -a riff-core-runtime

remove riff Knative Runtime (if installed)

kubectl delete knative --all-namespaces --all
kapp delete -n apps -a riff-knative-runtime
kapp delete -n apps -a knative

remove Contour

kapp delete -n apps -a contour

remove riff Build

kapp delete -n apps -a riff-build
kapp delete -n apps -a riff-builders
kapp delete -n apps -a kpack
kapp delete -n apps -a cert-manager
← Docker for MacCore →
  • Install Docker
    • resize the VM
    • allow sharing of the C: drive
    • enable Kubernetes
    • monitor your cluster
  • Install kapp
  • Install ytt
  • Install the riff CLI
  • Install riff Using kapp
    • install riff Build
    • install Contour ingress controller
    • install riff Knative Runtime
    • verify riff installation
    • apply build credentials
  • Create a function from a GitHub repo
  • Create a Knative deployer
    • invoke the function
  • Delete the function and deployer
  • Uninstalling riff
    • remove any riff resources
    • remove riff Streaming Runtime
    • remove riff Core Runtime (if installed)
    • remove riff Knative Runtime (if installed)
    • remove Contour
    • remove riff Build
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