49 lines
1.4 KiB
Bash
Executable File
49 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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KUBE_USER="ubuntu"
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PRIVATE_KEY_PATH="$HOME/.ssh/id_ed25519"
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KUBE_CP="k8s-control-plane"
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KUBE_W1="k8s-worker1"
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KUBE_W2="k8s-worker2"
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ANSIBLE_DIR="ansible"
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POD_NET_CIDR="192.168.0.0/16"
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CNI_VER="v3.30.2"
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API_ADDR=$(getent hosts "$KUBE_CP" | awk '{ print $1 }')
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## Prepare all of the nodes with k8s using the ansible playbooks I prepared
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ansible-playbook ./"$ANSIBLE_DIR"/master-k8s.yaml \
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-i "$KUBE_CP,$KUBE_W1,$KUBE_W2," \
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-e "k8s-control-plane=["$KUBE_CP"] k8s_nodes=["$KUBE_W1","$KUBE_W2"]" \
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-u "$KUBE_USER" \
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--private-key "$PRIVATE_KEY_PATH"
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## Bootstrap the cluster
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ssh "$KUBE_USER@$KUBE_CP" \
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"sudo kubeadm init \
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--pod-network-cidr=$POD_NET_CIDR \
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--apiserver-advertise-address=$API_ADDR \
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--cri-socket unix:///run/containerd/containerd.sock"
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ssh "$KUBE_USER@$KUBE_CP" \
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"sudo cp /etc/kubernetes/admin.conf /tmp/config && sudo chown $KUBE_USER:$KUBE_USER /tmp/config"
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## Fetch the configuration from the freshly installed cluster. BEWARE THAT ANY EXISTING CONFIG WILL BE OVERWRITTEN
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scp "$KUBE_USER@$KUBE_CP":/tmp/config "$HOME"/.kube/config
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## Install the CNI
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kubectl apply -f \
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"https://raw.githubusercontent.com/projectcalico/calico/$CNI_VER/manifests/calico.yaml"
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## Now join the workers to the cluster
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JOIN_TOKEN=$(ssh "$KUBE_USER@$KUBE_CP" \
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"sudo kubeadm token create --print-join-command")
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for NODE in "$KUBE_W1" "$KUBE_W2"; do
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echo "Joining $NODE"
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ssh "$KUBE_USER@$NODE" "sudo $JOIN_TOKEN"
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done |