nixpkgs/nixos/maintainers/scripts/ec2/create-amis.sh
2017-04-03 17:46:34 +02:00

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#!/usr/bin/env nix-shell
#! nix-shell -i bash -p qemu ec2_ami_tools jq ec2_api_tools awscli
# To start with do: nix-shell -p awscli --run "aws configure"
set -o pipefail
#set -x
stateDir=${TMPDIR:-/tmp}/ec2-image
echo "keeping state in $stateDir"
mkdir -p $stateDir
version=$(nix-instantiate --eval --strict '<nixpkgs>' -A lib.nixpkgsVersion | sed s/'"'//g)
major=${version:0:5}
echo "NixOS version is $version ($major)"
rm -f ec2-amis.nix
types="hvm pv"
stores="ebs s3"
regions="eu-west-1 eu-west-2 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"
for type in $types; do
link=$stateDir/$type
imageFile=$link/nixos.qcow2
system=x86_64-linux
arch=x86_64
# Build the image.
if ! [ -L $link ]; then
if [ $type = pv ]; then hvmFlag=false; else hvmFlag=true; fi
echo "building image type '$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; }"
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..."
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
done
done
for type in $types; do
link=$stateDir/$type
system=x86_64-linux
arch=x86_64
for store in $stores; do
for region in $regions; do
name=nixos-$version-$arch-$type-$store
amiFile=$stateDir/$region.$type.$store.ami-id
ami=$(cat $amiFile)
echo "region = $region, type = $type, store = $store, ami = $ami"
echo -n "waiting for AMI..."
while true; do
status=$(aws ec2 describe-images --image-ids "$ami" --region "$region" | jq -r .Images[0].State)
if [ "$status" = available ]; then break; fi
sleep 10
echo -n '.'
done
echo
# Make the image public.
aws ec2 modify-image-attribute \
--image-id "$ami" --region "$region" --launch-permission 'Add={Group=all}'
echo " \"$major\".$region.$type-$store = \"$ami\";" >> ec2-amis.nix
done
done
done