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

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#! /bin/sh -e
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)
echo "NixOS version is $version"
rm -f ec2-amis.nix
for type in hvm pv; do
link=$stateDir/$type
imageFile=$link/nixos.img
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 = $hvmFlag; }"
fi
for store in ebs s3; do
bucket=nixos-amis
bucketDir="$version-$type-$store"
prevAmi=
prevRegion=
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for region in eu-west-1 eu-central-1 us-east-1 us-west-1 us-west-2 ap-southeast-1 ap-southeast-2 ap-northeast-1 sa-east-1; 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=$(ec2-copy-image \
--region "$region" \
--source-region "$prevRegion" --source-ami-id "$prevAmi" \
--name "$name" --description "$description" | cut -f 2)
else
if [ $store = s3 ]; then
# Bundle the image.
imageDir=$stateDir/$type-bundled
if ! [ -d $imageDir ]; then
rm -rf $imageDir.tmp
mkdir -p $imageDir.tmp
ec2-bundle-image \
-d $imageDir.tmp \
-i $imageFile --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 $imageDir/nixos.img.manifest.xml \
-b "$bucket/$bucketDir" \
-a "$EC2_ACCESS_KEY" -s "$EC2_SECRET_KEY" \
--location EU
touch $imageDir/uploaded
fi
extraFlags="$bucket/$bucketDir/nixos.img.manifest.xml"
else
# Convert the image to vhd format so we don't have
# to upload a huge raw image.
vhdFile=$stateDir/$type.vhd
if ! [ -e $vhdFile ]; then
qemu-img convert -O vpc $imageFile $vhdFile.tmp
mv $vhdFile.tmp $vhdFile
fi
taskId=$(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 $vhdFile --no-upload -f vhd \
-o "$EC2_ACCESS_KEY" -w "$EC2_SECRET_KEY" \
--region "$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 "$region" \
-o "$EC2_ACCESS_KEY" -w "$EC2_SECRET_KEY"
fi
# Wait for the volume creation to finish.
if [ -z "$snapId" -a -z "$volId" ]; then
echo "waiting for import to finish..."
while true; do
volId=$(ec2-describe-conversion-tasks "$taskId" --region "$region" | sed 's/.*VolumeId.*\(vol-[0-9a-f]\+\).*/\1/ ; t ; d')
if [ -n "$volId" ]; then break; fi
sleep 10
done
echo -n "$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 "$region" -o "$EC2_ACCESS_KEY" -w "$EC2_SECRET_KEY" || true
rm -f $stateDir/$region.$type.task-id
fi
# Create a snapshot.
if [ -z "$snapId" ]; then
echo "creating snapshot..."
snapId=$(ec2-create-snapshot "$volId" --region "$region" | cut -f 2)
echo -n "$snapId" > $stateDir/$region.$type.snap-id
ec2-create-tags "$snapId" -t "Name=$description" --region "$region"
fi
# Wait for the snapshot to finish.
echo "waiting for snapshot to finish..."
while true; do
status=$(ec2-describe-snapshots "$snapId" --region "$region" | head -n1 | cut -f 4)
if [ "$status" = completed ]; then break; fi
sleep 10
done
# Delete the volume.
if [ -n "$volId" ]; then
echo "deleting volume..."
ec2-delete-volume "$volId" --region "$region" || true
rm -f $stateDir/$region.$type.vol-id
fi
extraFlags="-b /dev/sda1=$snapId:20:true:gp2"
if [ $type = pv ]; then
extraFlags+=" --root-device-name=/dev/sda1"
fi
extraFlags+=" -b /dev/sdb=ephemeral0 -b /dev/sdc=ephemeral1 -b /dev/sdd=ephemeral2 -b /dev/sde=ephemeral3"
fi
# Register the AMI.
if [ $type = pv ]; then
kernel=$(ec2-describe-images -o amazon --filter "manifest-location=*pv-grub-hd0_1.04-$arch*" --region "$region" | cut -f 2)
[ -n "$kernel" ]
echo "using PV-GRUB kernel $kernel"
extraFlags+=" --virtualization-type paravirtual --kernel $kernel"
else
extraFlags+=" --virtualization-type hvm"
fi
ami=$(ec2-register \
-n "$name" \
-d "$description" \
--region "$region" \
--architecture "$arch" \
$extraFlags | cut -f 2)
fi
echo -n "$ami" > $amiFile
echo "created AMI $ami of type '$type' in $region..."
else
ami=$(cat $amiFile)
fi
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if [ -z "$NO_WAIT" -o -z "$prevAmi" ]; then
echo "waiting for AMI..."
while true; do
status=$(ec2-describe-images "$ami" --region "$region" | head -n1 | cut -f 5)
if [ "$status" = available ]; then break; fi
sleep 10
done
ec2-modify-image-attribute \
--region "$region" "$ami" -l -a all
fi
echo "region = $region, type = $type, store = $store, ami = $ami"
if [ -z "$prevAmi" ]; then
prevAmi="$ami"
prevRegion="$region"
fi
echo " \"15.09\".$region.$type-$store = \"$ami\";" >> ec2-amis.nix
done
done
done