How to Install OpenFaaS on Linux Mint Latest

OpenFaaS is a serverless framework for building and deploying functions as microservices. It is written in Golang and provides a pluggable architecture that allows developers to use language-specific runtimes, such as Node.js, Python, and others.

This tutorial will guide you through the steps to install OpenFaaS on Linux Mint Latest.

Prerequisites

Linux Mint Latest
Docker
Docker Compose

Step 1 - Install Docker

Docker is a containerization platform that allows you to run applications in isolated containers. To install Docker on Linux Mint Latest:

sudo apt update
sudo apt install docker.io

After installation, verify that Docker is running by running the following command:

sudo systemctl status docker

Step 2 - Install Docker Compose

Docker Compose is a tool for defining and running multi-container Docker applications. To install Docker Compose on Linux Mint Latest:

sudo apt install docker-compose

Verify that Docker Compose is installed by running the following command:

docker-compose version

Step 3 - Install OpenFaaS

To install OpenFaaS, you need to clone the OpenFaaS repository from GitHub. Run the following commands to clone the repository and switch to the master branch:

git clone https://github.com/openfaas/faas.git
cd faas
git checkout master

Next, follow the steps below to configure and deploy OpenFaaS:

Create a file named .env in the faas directory with the following contents:
```
cp .env.example .env
```
Edit the .env file and set the PASSWORD variable to a strong password:
```
vi .env
```
```
PASSWORD=mystrongpassword
```
Create a new directory named stacks:
```
mkdir -p ./stacks
```
Start the OpenFaaS stack:
```
docker-compose up -d
```
This command will start the OpenFaaS stack in detached mode, which means that it will run in the background.

Verify that the OpenFaaS stack is running:

docker ps

You should see the following containers running:

CONTAINER ID   IMAGE                        COMMAND                  CREATED          STATUS          PORTS                     NAMES
e9a520f27c36   openfaas/gateway:0.25.2      "./entrypoint.sh"        11 minutes ago   Up 11 minutes   0.0.0.0:8080->8080/tcp   gateway
1ee64ab71b56   openfaas/faas-swarm:0.11.1   "/sbin/tini -- /usr…"   11 minutes ago   Up 11 minutes   2375/tcp                  faas-swarm

Step 4 - Configure the OpenFaaS CLI

The OpenFaaS CLI is a command-line tool that allows you to interact with the OpenFaaS gateway. To configure the CLI on Linux Mint Latest:

Install the CLI by running the following command:

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

Login to the OpenFaaS gateway:
```
echo $PASSWORD | faas login --gateway http://127.0.0.1:8080 -u admin --password-stdin
```
This command uses the PASSWORD you set earlier to log in to the OpenFaaS gateway.
Verify that the CLI is configured correctly:
```
faas version
```

Conclusion

In this tutorial, you learned how to install OpenFaaS on Linux Mint Latest. OpenFaaS provides a powerful and customizable serverless framework for building and deploying functions as microservices. With the OpenFaaS CLI, you can interact with the OpenFaaS gateway and deploy your applications with ease.