86 lines
2.9 KiB
Bash
86 lines
2.9 KiB
Bash
#!/bin/bash
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# ensure only run once
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if [[ -f /etc/startup_was_launched ]]; then exit 0; fi
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touch /etc/startup_was_launched
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# Format the k3s disk if not already formatted
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# This creates an ext4 filesystem on the specified
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# disk with no reserved space for root, forces the operation,
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# fully initializes inode tables and the journal, and enables
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# discard/TRIM for better performance on SSDs or
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# thin-provisioned storage.
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if ! lsblk | grep -q "/var/lib/rancher/k3s"; then
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mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/disk/by-id/google-k3s-disk
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mkdir -p /var/lib/rancher/k3s
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mount -o discard,defaults /dev/disk/by-id/google-k3s-disk /var/lib/rancher/k3s
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chmod a+w /var/lib/rancher/k3s
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fi
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# A disk named k3s-disk in your Terraform configuration will
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# appear as /dev/disk/by-id/google-k3s-disk.
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# Format the app-data-disk if not already formatted
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if ! lsblk | grep -q "/mnt/disks/app-data"; then
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mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard /dev/disk/by-id/google-app-data-disk
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mkdir -p /mnt/disks/app-data
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mount -o discard,defaults /dev/disk/by-id/google-app-data-disk /mnt/disks/app-data
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chmod a+w /mnt/disks/app-data
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fi
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# Similarly, a disk named app-data-disk will appear as /dev/
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# disk/by-id/google-app-data-disk.
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# Add to /etc/fstab for persistence (only if not already present)
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if ! grep -q "/var/lib/rancher/k3s" /etc/fstab; then
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echo "/dev/disk/by-id/google-k3s-disk /var/lib/rancher/k3s ext4 defaults,discard 0 0" >> /etc/fstab
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fi
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if ! grep -q "/mnt/disks/app-data" /etc/fstab; then
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echo "/dev/disk/by-id/google-app-data-disk /mnt/disks/app-data ext4 defaults,discard 0 0" >> /etc/fstab
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fi
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# apt install
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apt update
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apt install -y ncdu htop
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# helm install
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curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
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chmod 700 get_helm.sh
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/bin/bash get_helm.sh
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# user bashrc config
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rc=/home/user/.bashrc
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{
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echo "export KUBECONFIG=~/.kube/config"
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echo "alias l='ls -lah'"
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echo "alias ll='ls -lh'"
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echo "alias k=kubectl"
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echo "export dry='--dry-run=client'"
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echo "export o='-oyaml'"
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echo "alias kcd='kubectl config use-context'"
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echo "source <(kubectl completion bash)"
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echo "complete -F __start_kubectl k"
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echo "alias k='kubectl'"
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} >> $rc
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# Install k3s and configure it to use the persistent disk for data storage
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# curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--data-dir /mnt/disks/k3s" sh -
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k3s_version="v1.32.8+k3s1"
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curl -sfL https://get.k3s.io \
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INSTALL_K3S_VERSION="$k3s_version" sh -s - server \
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--cluster-init \
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--disable traefik \
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--disable servicelb
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mkdir -p /home/user/.kube
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chown user:user /home/user/.kube
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chmod 700 /home/user/.kube
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# Copy the kubeconfig file to the user's home directory
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# for easier access
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cp /etc/rancher/k3s/k3s.yaml /home/user/.kube/config
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chown user:user /home/user/.kube/config
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