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107 lines
2.9 KiB
Markdown
107 lines
2.9 KiB
Markdown
# Introduction to Flux CD v2
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## Create a kubernetes cluster
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In this guide we we''ll need a Kubernetes cluster for testing. Let's create one using [kind](https://kind.sigs.k8s.io/) </br>
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```
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kind create cluster --name fluxcd --image kindest/node:v1.23.5
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```
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See cluster up and running:
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```
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kubectl get nodes
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NAME STATUS ROLES AGE VERSION
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fluxcd-control-plane Ready control-plane,master 2m12s v1.23.5
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```
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## Run a container to work in
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### run Alpine Linux:
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```
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docker run -it --rm -v ${HOME}:/root/ -v ${PWD}:/work -w /work --net host alpine sh
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```
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### install some tools
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```
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# install curl
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apk add --no-cache curl
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# install kubectl
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curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
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chmod +x ./kubectl
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mv ./kubectl /usr/local/bin/kubectl
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# install helm
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curl -o /tmp/helm.tar.gz -LO https://get.helm.sh/helm-v3.10.1-linux-amd64.tar.gz
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tar -C /tmp/ -zxvf /tmp/helm.tar.gz
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mv /tmp/linux-amd64/helm /usr/local/bin/helm
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chmod +x /usr/local/bin/helm
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```
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### test cluster access:
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```
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/work # kubectl get nodes
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NAME STATUS ROLES AGE VERSION
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fluxcd-control-plane Ready control-plane,master 3m26s v1.23.5
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```
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## Flux CD
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### get flux command-line tool
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Let's download the `flux` command-line utility. </br>
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We can get this utility from the GitHub [Releases page](https://github.com/fluxcd/flux2/releases) </br>
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It's also worth noting that you want to ensure you get a compatible version of flux which supports your version of Kubernetes. Checkout the [prerequisites](https://fluxcd.io/flux/installation/#prerequisites) page. </br>
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```
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curl -o /tmp/flux.tar.gz -sLO https://github.com/fluxcd/flux2/releases/download/v0.41.1/flux_0.41.1_linux_amd64.tar.gz
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tar -C /tmp/ -zxvf /tmp/flux.tar.gz
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mv /tmp/flux /usr/local/bin/flux
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chmod +x /usr/local/bin/flux
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```
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Now we can run `flux --help` to see its installed
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## Check our cluster
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```
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flux check --pre
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```
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## Documentation
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As with every guide, we start with the documentation </br>
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The [Core Concepts](https://fluxcd.io/flux/concepts/) is a good place to start. </br>
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We begin by following the steps under the [bootstrap](https://fluxcd.io/flux/installation/#bootstrap) section for GitHub </br>
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We'll need to generate a [personal access token (PAT)](https://github.com/settings/tokens/new) that can create repositories by checking all permissions under `repo`. </br>
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Once we have a token, we can set it:
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```
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export GITHUB_TOKEN=<your-token>
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```
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Then we can bootstrap it using the GitHub bootstrap method
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```
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flux bootstrap github \
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--owner=marcel-dempers \
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--repository=docker-development-youtube-series \
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--path=kubernetes/fluxcd/clusters/dev-cluster \
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--personal \
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--branch fluxcd-2022
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```
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Check the source code that `flux bootstrap` created
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```
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git pull origin <branch-name>
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``` |