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amazon-image.nix: upload prebuilt images

nixos-unstable
Andrew Childs 3 years ago
parent
commit
84742e2293
  1. 8
      nixos/maintainers/scripts/ec2/amazon-image.nix
  2. 525
      nixos/maintainers/scripts/ec2/create-amis.sh

8
nixos/maintainers/scripts/ec2/amazon-image.nix

@ -76,6 +76,14 @@ in {
mkdir -p $out/nix-support
echo "file ${cfg.format} $diskImage" >> $out/nix-support/hydra-build-products
${pkgs.jq}/bin/jq -n \
--arg label ${lib.escapeShellArg config.system.nixos.label} \
--arg system ${lib.escapeShellArg pkgs.stdenv.hostPlatform.system} \
--arg logical_bytes "$(${pkgs.qemu}/bin/qemu-img info --output json "$diskImage" | ${pkgs.jq}/bin/jq '."virtual-size"')" \
--arg file "$diskImage" \
'$ARGS.named' \
> $out/nix-support/image-info.json
'';
};
}

525
nixos/maintainers/scripts/ec2/create-amis.sh

@ -1,279 +1,296 @@
#!/usr/bin/env nix-shell
#! nix-shell -i bash -p qemu ec2_ami_tools jq ec2_api_tools awscli
#!nix-shell -p awscli -p jq -p qemu -i bash
# Uploads and registers NixOS images built from the
# <nixos/release.nix> amazonImage attribute. Images are uploaded and
# registered via a home region, and then copied to other regions.
# The home region requires an s3 bucket, and a "vmimport" IAM role
# with access to the S3 bucket. Configuration of the vmimport role is
# documented in
# https://docs.aws.amazon.com/vm-import/latest/userguide/vmimport-image-import.html
# set -x
set -euo pipefail
# configuration
state_dir=/home/deploy/amis/ec2-images
home_region=eu-west-1
bucket=nixos-amis
regions=(eu-west-1 eu-west-2 eu-west-3 eu-central-1
us-east-1 us-east-2 us-west-1 us-west-2
ca-central-1
ap-southeast-1 ap-southeast-2 ap-northeast-1 ap-northeast-2
ap-south-1 ap-east-1
sa-east-1)
log() {
echo "$@" >&2
}
if [ -z "$1" ]; then
log "Usage: ./upload-amazon-image.sh IMAGE_OUTPUT"
exit 1
fi
# result of the amazon-image from nixos/release.nix
store_path=$1
if [ ! -e "$store_path" ]; then
log "Store path: $store_path does not exist, fetching..."
nix-store --realise "$store_path"
fi
if [ ! -d "$store_path" ]; then
log "store_path: $store_path is not a directory. aborting"
exit 1
fi
read_image_info() {
if [ ! -e "$store_path/nix-support/image-info.json" ]; then
log "Image missing metadata"
exit 1
fi
jq -r "$1" "$store_path/nix-support/image-info.json"
}
# We handle a single image per invocation, store all attributes in
# globals for convenience.
image_label=$(read_image_info .label)
image_system=$(read_image_info .system)
image_file=$(read_image_info .file)
image_logical_bytes=$(read_image_info .logical_bytes)
# Derived attributes
image_logical_gigabytes=$((($image_logical_bytes-1)/1024/1024/1024+1)) # Round to the next GB
case "$image_system" in
aarch64-linux)
amazon_arch=arm64
;;
x86_64-linux)
amazon_arch=x86_64
;;
*)
log "Unknown system: $image_system"
exit 1
esac
image_name="NixOS-${image_label}-${image_system}"
image_description="NixOS ${image_label} ${image_system}"
log "Image Details:"
log " Name: $image_name"
log " Description: $image_description"
log " Size (gigabytes): $image_logical_gigabytes"
log " System: $image_system"
log " Amazon Arch: $amazon_arch"
read_state() {
local state_key=$1
local type=$2
cat "$state_dir/$state_key.$type" 2>/dev/null || true
}
write_state() {
local state_key=$1
local type=$2
local val=$3
mkdir -p $state_dir
echo "$val" > "$state_dir/$state_key.$type"
}
wait_for_import() {
local region=$1
local task_id=$2
local state snapshot_id
log "Waiting for import task $task_id to be completed"
while true; do
read state progress snapshot_id < <(
aws ec2 describe-import-snapshot-tasks --region $region --import-task-ids "$task_id" | \
jq -r '.ImportSnapshotTasks[].SnapshotTaskDetail | "\(.Status) \(.Progress) \(.SnapshotId)"'
)
log " ... state=$state progress=$progress snapshot_id=$snapshot_id"
case "$state" in
active)
sleep 10
;;
completed)
echo "$snapshot_id"
return
;;
*)
log "Unexpected snapshot import state: '${state}'"
exit 1
;;
esac
done
}
wait_for_image() {
local region=$1
local ami_id=$2
local state
log "Waiting for image $ami_id to be available"
while true; do
read state < <(
aws ec2 describe-images --image-ids "$ami_id" --region $region | \
jq -r ".Images[].State"
)
log " ... state=$state"
case "$state" in
pending)
sleep 10
;;
available)
return
;;
*)
log "Unexpected AMI state: '${state}'"
exit 1
;;
esac
done
}
make_image_public() {
local region=$1
local ami_id=$2
# To start with do: nix-shell -p awscli --run "aws configure"
wait_for_image $region "$ami_id"
set -e
set -o pipefail
log "Making image $ami_id public"
version=$(nix-instantiate --eval --strict '<nixpkgs>' -A lib.version | sed s/'"'//g)
major=${version:0:5}
echo "NixOS version is $version ($major)"
aws ec2 modify-image-attribute \
--image-id "$ami_id" --region "$region" --launch-permission 'Add={Group=all}' >&2
}
stateDir=/home/deploy/amis/ec2-image-$version
echo "keeping state in $stateDir"
mkdir -p $stateDir
upload_image() {
local region=$1
rm -f ec2-amis.nix
local aws_path=${image_file#/}
types="hvm"
stores="ebs"
regions="eu-west-1 eu-west-2 eu-west-3 eu-central-1 us-east-1 us-east-2 us-west-1 us-west-2 ca-central-1 ap-southeast-1 ap-southeast-2 ap-northeast-1 ap-northeast-2 sa-east-1 ap-south-1"
local state_key="$region.$image_label.$image_system"
local task_id=$(read_state "$state_key" task_id)
local snapshot_id=$(read_state "$state_key" snapshot_id)
local ami_id=$(read_state "$state_key" ami_id)
for type in $types; do
link=$stateDir/$type
imageFile=$link/nixos.qcow2
system=x86_64-linux
arch=x86_64
if [ -z "$task_id" ]; then
log "Checking for image on S3"
if ! aws s3 ls --region "$region" "s3://${bucket}/${aws_path}" >&2; then
log "Image missing from aws, uploading"
aws s3 cp --region $region "$image_file" "s3://${bucket}/${aws_path}" >&2
fi
# Build the image.
if ! [ -L $link ]; then
if [ $type = pv ]; then hvmFlag=false; else hvmFlag=true; fi
log "Importing image from S3 path s3://$bucket/$aws_path"
echo "building image type '$type'..."
nix-build -o $link \
'<nixpkgs/nixos>' \
-A config.system.build.amazonImage \
--arg configuration "{ imports = [ <nixpkgs/nixos/maintainers/scripts/ec2/amazon-image.nix> ]; ec2.hvm = $hvmFlag; }"
task_id=$(aws ec2 import-snapshot --disk-container "{
\"Description\": \"nixos-image-${image_label}-${image_system}\",
\"Format\": \"vhd\",
\"UserBucket\": {
\"S3Bucket\": \"$bucket\",
\"S3Key\": \"$aws_path\"
}
}" --region $region | jq -r '.ImportTaskId')
write_state "$state_key" task_id "$task_id"
fi
for store in $stores; do
bucket=nixos-amis
bucketDir="$version-$type-$store"
prevAmi=
prevRegion=
for region in $regions; do
name=nixos-$version-$arch-$type-$store
description="NixOS $system $version ($type-$store)"
amiFile=$stateDir/$region.$type.$store.ami-id
if ! [ -e $amiFile ]; then
echo "doing $name in $region..."
if [ -n "$prevAmi" ]; then
ami=$(aws ec2 copy-image \
--region "$region" \
--source-region "$prevRegion" --source-image-id "$prevAmi" \
--name "$name" --description "$description" | jq -r '.ImageId')
if [ "$ami" = null ]; then break; fi
else
if [ $store = s3 ]; then
# Bundle the image.
imageDir=$stateDir/$type-bundled
# Convert the image to raw format.
rawFile=$stateDir/$type.raw
if ! [ -e $rawFile ]; then
qemu-img convert -f qcow2 -O raw $imageFile $rawFile.tmp
mv $rawFile.tmp $rawFile
fi
if ! [ -d $imageDir ]; then
rm -rf $imageDir.tmp
mkdir -p $imageDir.tmp
ec2-bundle-image \
-d $imageDir.tmp \
-i $rawFile --arch $arch \
--user "$AWS_ACCOUNT" -c "$EC2_CERT" -k "$EC2_PRIVATE_KEY"
mv $imageDir.tmp $imageDir
fi
# Upload the bundle to S3.
if ! [ -e $imageDir/uploaded ]; then
echo "uploading bundle to S3..."
ec2-upload-bundle \
-m $imageDir/$type.raw.manifest.xml \
-b "$bucket/$bucketDir" \
-a "$AWS_ACCESS_KEY_ID" -s "$AWS_SECRET_ACCESS_KEY" \
--location EU
touch $imageDir/uploaded
fi
extraFlags="--image-location $bucket/$bucketDir/$type.raw.manifest.xml"
else
# Convert the image to vhd format so we don't have
# to upload a huge raw image.
vhdFile=$stateDir/$type.vhd
if ! [ -e $vhdFile ]; then
qemu-img convert -f qcow2 -O vpc $imageFile $vhdFile.tmp
mv $vhdFile.tmp $vhdFile
fi
vhdFileLogicalBytes="$(qemu-img info "$vhdFile" | grep ^virtual\ size: | cut -f 2 -d \( | cut -f 1 -d \ )"
vhdFileLogicalGigaBytes=$(((vhdFileLogicalBytes-1)/1024/1024/1024+1)) # Round to the next GB
echo "Disk size is $vhdFileLogicalBytes bytes. Will be registered as $vhdFileLogicalGigaBytes GB."
taskId=$(cat $stateDir/$region.$type.task-id 2> /dev/null || true)
volId=$(cat $stateDir/$region.$type.vol-id 2> /dev/null || true)
snapId=$(cat $stateDir/$region.$type.snap-id 2> /dev/null || true)
# Import the VHD file.
if [ -z "$snapId" -a -z "$volId" -a -z "$taskId" ]; then
echo "importing $vhdFile..."
taskId=$(ec2-import-volume $vhdFile --no-upload -f vhd \
-O "$AWS_ACCESS_KEY_ID" -W "$AWS_SECRET_ACCESS_KEY" \
-o "$AWS_ACCESS_KEY_ID" -w "$AWS_SECRET_ACCESS_KEY" \
--region "$region" -z "${region}a" \
--bucket "$bucket" --prefix "$bucketDir/" \
| tee /dev/stderr \
| sed 's/.*\(import-vol-[0-9a-z]\+\).*/\1/ ; t ; d')
echo -n "$taskId" > $stateDir/$region.$type.task-id
fi
if [ -z "$snapId" -a -z "$volId" ]; then
ec2-resume-import $vhdFile -t "$taskId" --region "$region" \
-O "$AWS_ACCESS_KEY_ID" -W "$AWS_SECRET_ACCESS_KEY" \
-o "$AWS_ACCESS_KEY_ID" -w "$AWS_SECRET_ACCESS_KEY"
fi
# Wait for the volume creation to finish.
if [ -z "$snapId" -a -z "$volId" ]; then
echo "waiting for import to finish..."
while true; do
volId=$(aws ec2 describe-conversion-tasks --conversion-task-ids "$taskId" --region "$region" | jq -r .ConversionTasks[0].ImportVolume.Volume.Id)
if [ "$volId" != null ]; then break; fi
sleep 10
done
echo -n "$volId" > $stateDir/$region.$type.vol-id
fi
# Delete the import task.
if [ -n "$volId" -a -n "$taskId" ]; then
echo "removing import task..."
ec2-delete-disk-image -t "$taskId" --region "$region" \
-O "$AWS_ACCESS_KEY_ID" -W "$AWS_SECRET_ACCESS_KEY" \
-o "$AWS_ACCESS_KEY_ID" -w "$AWS_SECRET_ACCESS_KEY" || true
rm -f $stateDir/$region.$type.task-id
fi
# Create a snapshot.
if [ -z "$snapId" ]; then
echo "creating snapshot..."
# FIXME: this can fail with InvalidVolume.NotFound. Eventual consistency yay.
snapId=$(aws ec2 create-snapshot --volume-id "$volId" --region "$region" --description "$description" | jq -r .SnapshotId)
if [ "$snapId" = null ]; then exit 1; fi
echo -n "$snapId" > $stateDir/$region.$type.snap-id
fi
# Wait for the snapshot to finish.
echo "waiting for snapshot to finish..."
while true; do
status=$(aws ec2 describe-snapshots --snapshot-ids "$snapId" --region "$region" | jq -r .Snapshots[0].State)
if [ "$status" = completed ]; then break; fi
sleep 10
done
# Delete the volume.
if [ -n "$volId" ]; then
echo "deleting volume..."
aws ec2 delete-volume --volume-id "$volId" --region "$region" || true
rm -f $stateDir/$region.$type.vol-id
fi
blockDeviceMappings="DeviceName=/dev/sda1,Ebs={SnapshotId=$snapId,VolumeSize=$vhdFileLogicalGigaBytes,DeleteOnTermination=true,VolumeType=gp2}"
extraFlags=""
if [ $type = pv ]; then
extraFlags+=" --root-device-name /dev/sda1"
else
extraFlags+=" --root-device-name /dev/sda1"
extraFlags+=" --sriov-net-support simple"
extraFlags+=" --ena-support"
fi
blockDeviceMappings+=" DeviceName=/dev/sdb,VirtualName=ephemeral0"
blockDeviceMappings+=" DeviceName=/dev/sdc,VirtualName=ephemeral1"
blockDeviceMappings+=" DeviceName=/dev/sdd,VirtualName=ephemeral2"
blockDeviceMappings+=" DeviceName=/dev/sde,VirtualName=ephemeral3"
fi
if [ $type = hvm ]; then
extraFlags+=" --sriov-net-support simple"
extraFlags+=" --ena-support"
fi
# Register the AMI.
if [ $type = pv ]; then
kernel=$(aws ec2 describe-images --owner amazon --filters "Name=name,Values=pv-grub-hd0_1.05-$arch.gz" | jq -r .Images[0].ImageId)
if [ "$kernel" = null ]; then break; fi
echo "using PV-GRUB kernel $kernel"
extraFlags+=" --virtualization-type paravirtual --kernel $kernel"
else
extraFlags+=" --virtualization-type hvm"
fi
ami=$(aws ec2 register-image \
--name "$name" \
--description "$description" \
--region "$region" \
--architecture "$arch" \
--block-device-mappings $blockDeviceMappings \
$extraFlags | jq -r .ImageId)
if [ "$ami" = null ]; then break; fi
fi
echo -n "$ami" > $amiFile
echo "created AMI $ami of type '$type' in $region..."
else
ami=$(cat $amiFile)
fi
echo "region = $region, type = $type, store = $store, ami = $ami"
if [ -z "$prevAmi" ]; then
prevAmi="$ami"
prevRegion="$region"
fi
done
if [ -z "$snapshot_id" ]; then
snapshot_id=$(wait_for_import "$region" "$task_id")
write_state "$state_key" snapshot_id "$snapshot_id"
fi
done
if [ -z "$ami_id" ]; then
log "Registering snapshot $snapshot_id as AMI"
local block_device_mappings=(
"DeviceName=/dev/sda1,Ebs={SnapshotId=$snapshot_id,VolumeSize=$image_logical_gigabytes,DeleteOnTermination=true,VolumeType=gp2}"
)
local extra_flags=(
--root-device-name /dev/sda1
--sriov-net-support simple
--ena-support
--virtualization-type hvm
)
block_device_mappings+=(DeviceName=/dev/sdb,VirtualName=ephemeral0)
block_device_mappings+=(DeviceName=/dev/sdc,VirtualName=ephemeral1)
block_device_mappings+=(DeviceName=/dev/sdd,VirtualName=ephemeral2)
block_device_mappings+=(DeviceName=/dev/sde,VirtualName=ephemeral3)
ami_id=$(
aws ec2 register-image \
--name "$image_name" \
--description "$image_description" \
--region $region \
--architecture $amazon_arch \
--block-device-mappings "${block_device_mappings[@]}" \
"${extra_flags[@]}" \
| jq -r '.ImageId'
)
write_state "$state_key" ami_id "$ami_id"
fi
done
make_image_public $region "$ami_id"
for type in $types; do
link=$stateDir/$type
system=x86_64-linux
arch=x86_64
echo "$ami_id"
}
for store in $stores; do
copy_to_region() {
local region=$1
local from_region=$2
local from_ami_id=$3
for region in $regions; do
state_key="$region.$image_label.$image_system"
ami_id=$(read_state "$state_key" ami_id)
name=nixos-$version-$arch-$type-$store
amiFile=$stateDir/$region.$type.$store.ami-id
ami=$(cat $amiFile)
if [ -z "$ami_id" ]; then
log "Copying $from_ami_id to $region"
ami_id=$(
aws ec2 copy-image \
--region "$region" \
--source-region "$from_region" \
--source-image-id "$from_ami_id" \
--name "$image_name" \
--description "$image_description" \
| jq -r '.ImageId'
)
echo "region = $region, type = $type, store = $store, ami = $ami"
write_state "$state_key" ami_id "$ami_id"
fi
echo -n "waiting for AMI..."
while true; do
status=$(aws ec2 describe-images --image-ids "$ami" --region "$region" | jq -r .Images[0].State)
if [ "$status" = available ]; then break; fi
sleep 10
echo -n '.'
done
echo
make_image_public $region "$ami_id"
echo "$ami_id"
}
# Make the image public.
aws ec2 modify-image-attribute \
--image-id "$ami" --region "$region" --launch-permission 'Add={Group=all}'
upload_all() {
home_image_id=$(upload_image "$home_region")
jq -n \
--arg key "$home_region.$image_system" \
--arg value "$home_image_id" \
'$ARGS.named'
echo " \"$major\".$region.$type-$store = \"$ami\";" >> ec2-amis.nix
done
for region in "${regions[@]}"; do
if [ "$region" = "$home_region" ]; then
continue
fi
copied_image_id=$(copy_to_region "$region" "$home_region" "$home_image_id")
jq -n \
--arg key "$region.$image_system" \
--arg value "$copied_image_id" \
'$ARGS.named'
done
}
done
upload_all | jq --slurp from_entries

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