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Convert ECS Optimized AMI to use overlay/overlay2
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set -e | |
# Stop the docker daemon | |
/etc/init.d/docker stop | |
# Configure ECS Agent | |
# http://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-agent-config.html | |
# http://docs.aws.amazon.com/AmazonECS/latest/developerguide/automated_image_cleanup.html | |
cat > /etc/ecs/ecs.config << "EOF" | |
ECS_ENGINE_TASK_CLEANUP_WAIT_DURATION=1h | |
ECS_NUM_IMAGES_DELETE_PER_CYCLE=100 | |
EOF | |
# The current AMI uses 17.03.1-ce, so no need to upgrade anymore. | |
# Keeping this to show how to upgrade in the future. | |
# | |
# Upgrade to Docker 17.03.1-ce | |
# wget https://get.docker.com/builds/Linux/x86_64/docker-17.03.1-ce.tgz | |
# tar xzf docker-17.03.1-ce.tgz | |
# cp docker/docker* /usr/bin | |
# cp docker/completion/bash/docker /etc/bash_completion.d/ | |
# rm -rf docker* | |
# Get rid of devicemapper defs | |
dmsetup remove_all | |
# Reset the disk | |
dd if=/dev/zero of=/dev/xvdcz bs=512 count=128 | |
# Remove all docker data | |
rm -rf /var/lib/docker/* | |
# Remove ecs data | |
rm -rf /var/lib/ecs/data/* /var/cache/ecs/* | |
# Remove cloud-init stuff so that it runs again | |
rm -rf /var/lib/cloud/* | |
# Remove logs | |
rm -rf /var/log/cloud-init* /var/log/docker /var/log/ecs/* | |
# Don't need this | |
cat > /etc/sysconfig/docker-storage-setup << "EOF" | |
echo "Not needed with overlay, contents removed" | |
exit 1 | |
EOF | |
# Setup docker to use overlay | |
cat > /etc/sysconfig/docker-storage << "EOF" | |
DOCKER_STORAGE_OPTIONS="--storage-driver=overlay2" | |
EOF | |
# Setup cloud init to prep disks for docker to use overlay | |
cat > /etc/cloud/cloud.cfg.d/90_ecs.cfg << "EOF" | |
#cloud-config | |
cloud_init_modules: | |
- bootcmd | |
cloud_config_modules: | |
- mounts | |
system_info: | |
default_user: | |
groups: [ "wheel", "docker" ] | |
bootcmd: | |
- [ cloud-init-per, once, docker_overlay_fs, mkfs, -t, ext4, -L, docker, -i, 4096, /dev/xvdcz ] | |
# This doesn't seem to work, hence using the bootcmd above instead. | |
# fs_setup: | |
# - label: docker | |
# filesystem: ext4 | |
# device: /dev/xvdcz | |
# partition: none | |
# cmd: mkfs -t %(FILESYSTEM)s -L %(LABEL)s -i 4096 %(DEVICE)s | |
mounts: | |
- [ /dev/xvdcz, /var/lib/docker/overlay ] | |
EOF | |
# Start the docker daemon | |
/etc/init.d/docker start |
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