Installation - fluxcd/flux2

Flux2 is an open-source GitOps tool designed to automate the deployment and management of applications in Kubernetes clusters. It provides a seamless way to synchronize the desired state of your applications with the actual state in your cluster. In this comprehensive guide, we will explore the different methods to deploy and install Flux2.

Flux CLI

Flux provides a command-line interface (CLI) that can be used to interact with the tool. To set up the Flux CLI, you can use the following steps:

Install the Flux CLI using the fluxcd/flux2/action action in your GitHub Actions workflow:

- name: Setup Flux CLI
uses: fluxcd/flux2/action@main
with:
version: 'latest'

After installing the Flux CLI, you can check the version by running:

flux version --client

For more information about the Flux CLI, visit the official documentation.

Install Script

The Flux installation script is another way to set up the tool. It attempts to detect your operating system, downloads the release tar file, verifies and unpacks it, copies the flux binary to /usr/local/bin, and removes the temporary directory.

To install using the script, follow these steps:

Download the script:

curl -s https://raw.githubusercontent.com/fluxcd/flux/master/install.sh | sh

Verify the installation:

flux version --client

Docker

A container image with kubectl and flux is available on DockerHub and GitHub. To install using Docker, follow these steps:

# For DockerHub
docker run -it --entrypoint=sh -v ~/.kube/config:/kubeconfig ghcr.io/fluxcd/flux-cli:v2.0.0
# For GitHub
docker run -it --entrypoint=sh ghcr.io/fluxcd/flux-cli:v2.0.0

Replace v2.0.0 with the desired version.

GitHub Actions

To install the latest release on Linux, macOS, or Windows GitHub runners, you can use the following steps:

Create a new job in your GitHub Actions workflow:

jobs:
install_flux:
runs-on: ubuntu-latest
steps:
- name: Install Flux
uses: actions/checkout@v2
with:
repository: fluxcd/flux
ref: v2.0.0
env:
GIT_TERMINAL_PROMPT: 0
shell: bash
run: |
cd flux
make release
curl -s https://raw.githubusercontent.com/fluxcd/flux/master/install.sh | sh
rm flux
mv flux /usr/local/bin
rm flux-linux-amd64 /usr/local/bin
rm flux-linux-arm64 /usr/local/bin
rm flux-linux-arm /usr/local/bin
rm flux-darwin-amd64 /usr/local/bin
rm flux-darwin-arm64 /usr/local/bin
rm flux-windows-amd64 /usr/local/bin
rm flux-windows-arm64 /usr/local/bin
rm flux-windows-arm /usr/local/bin
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