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Installing and Configuring Flux with GitHub

This lab introduces the steps necessary steps for installing Flux and configuring it to work with a student repository in GitHub. The student will need their own GitHub account to fork a sample repository, and this lab will spin up a Kubernetes cluster to enable the student to install and configure Flux.

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Path Info

Clock icon Beginner
Clock icon 45m
Clock icon Feb 13, 2020

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Table of Contents

  1. Challenge

    Create a GitHub Repository Under Your Own Account

    To create a repository on GitHub you must log in to your own account, and then you can create a repository with the YAML files you require. Or you can find the linuxacademy/content-gitops repository and fork it. Once you create your own version of that repository, examine the YAML files in the namespaces and workloads folders.

  2. Challenge

    Deploy Flux Into Your Cluster

    To check whether fluxctl is installed, enter:

    $ fluxctl version

    If fluxctl did not install automatically, you may enter the following command to install it:

    $ sudo wget -O /usr/bin/fluxctl && sudo chmod +x /usr/bin/fluxctl

    Create a namespace for Flux:

    $ kubectl create ns flux

    Set the GHUSER environment variable:

    $ export GHUSER=[Your GitHub Handle]

    Deploy Flux using the fluxctl command:

    $ fluxctl install 
    [email protected]:${GHUSER}/content-gitops 
    --namespace=flux | kubectl apply -f -
  3. Challenge

    Verify The Deployment and Obtain the RSA Key

    Verify the Flux deployment:

    $ kubectl -n flux rollout status deployment/flux

    Obtain the Flux RSA key created by fluxctl:

    $ fluxctl identity --k8s-fwd-ns flux

    Copy off the RSA key to implement in GitHub.

  4. Challenge

    Implement the RSA Key in GitHub

    Use the GitHub User Interface to Add the RSA Key obtained as a Deploy Key in GitHub.

  5. Challenge

    Use the fluxctl sync Command to Synchronize the Cluster with the Repository

    Use fluxctl to sync the cluster with the repository:

    $ fluxctl sync --k8s-fwd-ns flux

    Then check the existence of the lasample namespace:

    $ kubectl get namespaces

    Finally check that the Nginx deployment is running:

    $ kubectl get pods --all-namespaces

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