mirror of https://github.com/k3s-io/k3s
80 lines
2.5 KiB
Bash
80 lines
2.5 KiB
Bash
#!/bin/bash
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# Copyright 2015 The Kubernetes Authors All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Discover all the ephemeral disks
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block_devices=()
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ephemeral_devices=$(curl --silent http://169.254.169.254/2014-11-05/meta-data/block-device-mapping/ | grep ephemeral)
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for ephemeral_device in $ephemeral_devices; do
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echo "Checking ephemeral device: ${ephemeral_device}"
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aws_device=$(curl --silent http://169.254.169.254/2014-11-05/meta-data/block-device-mapping/${ephemeral_device})
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device_path=""
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if [ -b /dev/$aws_device ]; then
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device_path="/dev/$aws_device"
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else
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# Check for the xvd-style name
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xvd_style=$(echo $aws_device | sed "s/sd/xvd/")
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if [ -b /dev/$xvd_style ]; then
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device_path="/dev/$xvd_style"
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fi
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fi
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if [[ -z ${device_path} ]]; then
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echo " Could not find disk: ${ephemeral_device}@${aws_device}"
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else
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echo " Detected ephemeral disk: ${ephemeral_device}@${device_path}"
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block_devices+=(${device_path})
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fi
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done
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# Format the ephemeral disks
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if [[ ${#block_devices[@]} == 0 ]]; then
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echo "No ephemeral block devices found"
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else
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echo "Block devices: ${block_devices}"
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apt-get install --yes btrfs-tools
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if [[ ${#block_devices[@]} == 1 ]]; then
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echo "One ephemeral block device found; formatting with btrfs"
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mkfs.btrfs -f ${block_devices[0]}
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else
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echo "Found multiple ephemeral block devices, formatting with btrfs as RAID-0"
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mkfs.btrfs -f --data raid0 ${block_devices[@]}
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fi
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mount -t btrfs ${block_devices[0]} /mnt
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# Move docker to /mnt if we have it
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if [[ -d /var/lib/docker ]]; then
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mv /var/lib/docker /mnt/
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fi
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mkdir -p /mnt/docker
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ln -s /mnt/docker /var/lib/docker
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DOCKER_ROOT="/mnt/docker"
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DOCKER_OPTS="${DOCKER_OPTS} -g /mnt/docker"
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# Move /var/lib/kubelet to /mnt if we have it
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# (the backing for empty-dir volumes can use a lot of space!)
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if [[ -d /var/lib/kubelet ]]; then
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mv /var/lib/kubelet /mnt/
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fi
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mkdir -p /mnt/kubelet
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ln -s /mnt/kubelet /var/lib/kubelet
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fi
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