Installing OpenFaaS on EndeavourOS

OpenFaaS is a popular serverless framework that allows you to create and run serverless applications, powered by Kubernetes or Docker Swarm. In this tutorial, we will install OpenFaaS on EndeavourOS using Kubernetes.

Prerequisites

Before we start installing OpenFaaS, make sure that you have the following:

• An EndeavourOS instance
• A Kubernetes cluster (either local or on a cloud service)
• kubectl installed on your local machine
• Helm v3 installed on your local machine

If you don't have a Kubernetes cluster, you can install it locally using MicroK8s. Follow the instructions on the MicroK8s website to install it on your local machine.

Installing OpenFaaS with Helm

To install OpenFaaS, we will use the Helm chart provided by OpenFaaS. The Helm chart will take care of installing all the necessary components and resources for OpenFaaS.

1. First, you need to add the OpenFaaS Helm repository to your local machine:

helm repo add openfaas https://openfaas.github.io/faas-netes/

2. Next, update the Helm chart repository:

helm repo update

3. Create a namespace for OpenFaaS:

kubectl create namespace openfaas

4. Install OpenFaaS:

helm upgrade openfaas --namespace openfaas openfaas/openfaas --install

This command will install OpenFaaS with all the necessary components and Kubernetes resources.

5. Get the OpenFaaS gateway password:

PASSWORD=$(kubectl get secret -n openfaas basic-auth -o jsonpath="{.data.basic-auth-password}" | base64 --decode; echo)

This command will retrieve the OpenFaaS gateway password and store it in the PASSWORD environment variable.

Accessing OpenFaaS

You can access OpenFaaS using the faas-cli command-line interface or the OpenFaaS dashboard, which is a web-based interface.

Using the faas-cli CLI

1. Install the faas-cli CLI by running the following command:

curl -sL https://cli.openfaas.com | sudo sh

This command will download and install the faas-cli CLI on your local machine.

2. Login to the OpenFaaS gateway:

echo $PASSWORD | faas-cli login --username=admin --password-stdin

This command logs in to the OpenFaaS gateway using the admin username and the password you retrieved earlier.

3. Deploy a sample function to OpenFaaS:

faas-cli deploy -f https://raw.githubusercontent.com/openfaas/faas/master/sample.yml

This command deploys a sample function to OpenFaaS using the sample.yml configuration file.

4. Invoke the function:

echo "hello world" | faas-cli invoke faas-sample

This command invokes the faas-sample function that we just deployed to OpenFaaS.

Using the OpenFaaS dashboard

1. Port-forward the OpenFaaS gateway port:

kubectl port-forward -n openfaas svc/gateway 8080:8080

This command will create a port-forwarding tunnel that allows you to access the OpenFaaS gateway from your local machine.

2. Open the OpenFaaS dashboard in your web browser:

http://localhost:8080/ui/

This command will open the OpenFaaS dashboard in your web browser, where you can manage your serverless functions and deploy new ones.

Conclusion

In this tutorial, we showed you how to install and use OpenFaaS on EndeavourOS using Kubernetes and Helm. With OpenFaaS, you can quickly build and deploy serverless applications using Kubernetes or Docker Swarm.

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