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Daemonset to automatically stripe all local ssd disks and mount for use in GKE workloads.
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| --- | |
| apiVersion: apps/v1 | |
| kind: DaemonSet | |
| metadata: | |
| name: local-ssd-init | |
| labels: | |
| app: local-ssd-init | |
| spec: | |
| template: | |
| spec: | |
| hostPID: true | |
| nodeSelector: | |
| cloud.google.com/gke-local-ssd: "true" | |
| volumes: | |
| - name: setup-script | |
| configMap: | |
| name: local-ssd-init | |
| - name: host-mount | |
| hostPath: | |
| path: /tmp/setup | |
| initContainers: | |
| - name: local-ssd-init | |
| image: marketplace.gcr.io/google/ubuntu1804 | |
| securityContext: | |
| privileged: true | |
| volumeMounts: | |
| - name: setup-script | |
| mountPath: /tmp | |
| - name: host-mount | |
| mountPath: /host | |
| command: | |
| - /bin/bash | |
| - -c | |
| - | | |
| set -ex | |
| cp /tmp/setup.sh /tmp/wait.sh /host/ | |
| /usr/bin/nsenter -m/proc/1/ns/mnt -- chmod u+x /tmp/setup/wait.sh /tmp/setup/setup.sh | |
| /usr/bin/nsenter -m/proc/1/ns/mnt /bin/bash /tmp/setup/wait.sh | |
| /usr/bin/nsenter -m/proc/1/ns/mnt /bin/bash /tmp/setup/setup.sh | |
| containers: | |
| - image: "gcr.io/google-containers/pause:2.0" | |
| name: pause |
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| apiVersion: kustomize.config.k8s.io/v1beta1 | |
| kind: Kustomization | |
| namespace: kube-system | |
| commonLabels: | |
| app.kubernetes.io/name: local-ssd-init | |
| resources: | |
| - daemonset.yaml | |
| configMapGenerator: | |
| - name: local-ssd-init | |
| files: | |
| - setup.sh | |
| - wait.sh |
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| #!/bin/bash | |
| set -exo pipefail | |
| isMounted() { findmnt -rno SOURCE,TARGET "$1" >/dev/null; } | |
| SSDS=(`readlink -f /dev/disk/by-id/google-local-ssd-*`) | |
| apt-get -y update && apt-get -y install mdadm xfsprogs --no-install-recommends | |
| if [ -b "/dev/md0" ]; then | |
| if isMounted "/dev/md0"; then | |
| echo "Array already created and mounted. Exiting" | |
| exit 0 | |
| fi | |
| mdadm --stop /dev/md0 | |
| mdadm --zero-superblock "${SSDS[@]}" | |
| fi | |
| umount "${SSDS[@]}" 2>/dev/null || true | |
| yes | mdadm --create /dev/md0 --force --level=0 "--raid-devices=${#SSDS[@]}" "${SSDS[@]}" || true | |
| mkfs.xfs -f /dev/md0 | |
| mkdir -p /mnt/disks/ssd | |
| mount /dev/md0 /mnt/disks/ssd | |
| # This file can be used as a Volume to ensure only a prepared host will allow pods to be scheduled on it. | |
| touch /mnt/disks/ssd/.initialized |
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| #!/bin/bash | |
| while sudo fuser /var/{lib/{dpkg,apt/lists},cache/apt/archives}/lock >/dev/null 2>&1; do sleep 1; done |
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