103 lines
2.3 KiB
Markdown
103 lines
2.3 KiB
Markdown
# Cluster Setup
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* Fedora 35
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* Fedora Kubernetes packages 1.22
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## Machine Setup
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Add to *pyrocufflink.blue* domain:
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```sh
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ansible-playbook \
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-l k8s-amd64-ctrl0.pyrocufflink.blue \
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remount.yml \
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bootstrap.yml \
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pyrocufflink.yml \
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-e ansible_host=172.30.0.167/28 \
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-u root \
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-e @join.creds
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```
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Set up Kubernetes agent (`kubelet`):
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```sh
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ansible-playbook -l k8s-amd64-ctrl0.pyrocufflink.blue kubelet.yml -b
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```
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## Initialize cluster
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Run on *k8s-ctrl0.pyrocufflink.blue*:
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```sh
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kubeadm init \
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--control-plane-endpoint kubernetes.pyrocufflink.blue \
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--upload-certs \
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--kubernetes-version=$(rpm -q --qf '%{V}' kubernetes-node) \
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--pod-network-cidr=10.149.0.0/16
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```
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## Configure Pod Networking
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[Calico] seems to be the best choice, based on its feature completeness, and
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a couple of performance benchmarks put it basically at the top.
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```sh
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curl -fL\
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-O 'https://projectcalico.docs.tigera.io/manifests/tigera-operator.yaml' \
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-O 'https://projectcalico.docs.tigera.io/manifests/custom-resources.yaml'
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sed -i 's/192\.168\.0\.0\/16/10.149.0.0\/16/' custom-resources.yaml
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kubectl create -f tigera-operator.yaml
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kubectl create -f custom-resources.yaml
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```
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Wait for Calico to deploy completely, then restart CoreDNS:
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```sh
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kubectl wait -n calico-system --for=condition=ready \
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$(kubectl get pods -n calico-system -l k8s-app=calico-node -o name)
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kubectl -n kube-system rollout restart deployment coredns
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unset calico_node
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```
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## Add Worker Nodes
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```sh
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kubeadm join kubernetes.pyrocufflink.blue:6443 \
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--token xxxxxx.xxxxxxxxxxxxxxxx \
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--discovery-token-ca-cert-hash sha256:…
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```
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## Add Control Plane Nodes
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```sh
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kubeadm join kubernetes.pyrocufflink.blue:6443 \
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--token xxxxxx.xxxxxxxxxxxxxxxxx \
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--discovery-token-ca-cert-hash sha256:… \
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--control-plane \
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--certificate-key …
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```
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[Calico]: https://projectcalico.docs.tigera.io/getting-started/kubernetes/self-managed-onprem/onpremises
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## Create Admin user
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```sh
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cat < kubeadm-user.yaml <<EOF
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: ClusterConfiguration
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clusterName: kubernetes
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controlPlaneEndpoint: kubernetes.pyrocufflink.blue:6443
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certificatesDir: /etc/kubernetes/pki
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EOF
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kubeadm kubeconfig user \
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--client-name dustin \
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--config kubeadm-user.yaml \
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--org system:masters \
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> dustin.kubeconfig
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```
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