71 lines
1.9 KiB
Markdown
71 lines
1.9 KiB
Markdown
title: ungleich production cluster #1
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---
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pub_date: 2021-07-05
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---
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author: ungleich
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---
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twitter_handle: ungleich
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---
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_hidden: no
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---
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_discoverable: no
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---
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abstract:
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In this blog article we describe our way to our first production
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kubernetes cluster.
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---
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body:
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## Introduction
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This article is WIP to describe all steps required for our first
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production kubernetes cluster and the services that we run in it.
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## Setup
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### Bootstrapping
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* All nodes are running [Alpine Linux](https://alpinelinux.org)
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* All nodes are configured using [cdist](https://cdi.st)
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* Mainly installing kubeadm, kubectl, crio *and* docker
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* At the moment we try to use crio
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* The cluster is initalised using **kubeadm init --config
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k8s/c2/kubeadm.yaml** from the [ungleich-k8s repo](https://code.ungleich.ch/ungleich-public/ungleich-k8s)
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### CNI/Networking
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* Calico is installed using **kubectl apply -f
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cni-calico/calico.yaml** from the [ungleich-k8s
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repo](https://code.ungleich.ch/ungleich-public/ungleich-k8s)
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* Installing calicoctl using **kubectl apply -f
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https://docs.projectcalico.org/manifests/calicoctl.yaml**
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* Aliasing calicoctl: **alias calicoctl="kubectl exec -i -n kube-system calicoctl -- /calicoctl"**
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* All nodes BGP peer with our infrastructure using **calicoctl create -f - < cni-calico/bgp-c2.yaml**
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### Persistent Volume Claim support
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* Provided by rook
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* Using customized manifests to support IPv6 from ungleich-k8s
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```
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for yaml in crds common operator cluster storageclass-cephfs storageclass-rbd toolbox; do
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kubectl apply -f ${yaml}.yaml
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done
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```
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### Flux
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Starting with the 2nd cluster?
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## Follow up
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If you are interesting in continuing the discussion,
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we are there for you in
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**the #kubernetes:ungleich.ch Matrix channel**
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[you can signup here if you don't have an
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account](https://chat.with.ungleich.ch).
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Or if you are interested in an IPv6 only kubernetes cluster,
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drop a mail to **support**-at-**ungleich.ch**.
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