nixcfg/cluster/prod/app/backup/build/backup-garage/do-backup.sh

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#!/usr/bin/env bash
# DEPENDENCIES: btrfs-progs curl rclone jq
# PARAMETERS (environmenet variables)
# $BACKUP_BASEDIR => where to store backups and btrfs snapshots
# $GARAGE_ADMIN_TOKEN => Garage administration access token
# $GARAGE_ACCESS_KEY => Garage access key
# $GARAGE_SECRET_KEY => Garage secret key
if [ -z "$BACKUP_BASEDIR" -o -z "$GARAGE_ACCESS_KEY" -o -z "$GARAGE_ADMIN_TOKEN" ]; then
echo "Missing parameters"
fi
if [ ! -d "$BACKUP_BASEDIR/buckets" ]; then
btrfs subvolume create "$BACKUP_BASEDIR/buckets"
fi
function gcurl {
curl -s -H "Authorization: Bearer $GARAGE_ADMIN_TOKEN" $@
}
BUCKETS=$(gcurl "http://localhost:3903/v0/bucket" | jq -r '.[].id')
for BUCKET in $BUCKETS; do
echo "==== BUCKET $BUCKET ===="
gcurl "http://localhost:3903/v0/bucket?id=$BUCKET" > "$BACKUP_BASEDIR/buckets/$BUCKET.json"
ALIASES=$(jq -r '.globalAliases[]' < "$BACKUP_BASEDIR/buckets/$BUCKET.json")
echo "(aka. $ALIASES)"
case $ALIASES in
*backup*)
echo "Skipping $BUCKET (not doing backup of backup)"
;;
*cache*)
echo "Skipping $BUCKET (not doing backup of cache)"
;;
*)
echo "Backing up $BUCKET"
if [ ! -d "$BACKUP_BASEDIR/buckets/$BUCKET" ]; then
mkdir "$BACKUP_BASEDIR/buckets/$BUCKET"
fi
gcurl -X POST -H "Content-Type: application/json" --data @- "http://localhost:3903/v0/bucket/allow" >/dev/null <<EOF
{
"bucketId": "$BUCKET",
"accessKeyId": "$GARAGE_ACCESS_KEY",
"permissions": {"read": true}
}
EOF
rclone sync --s3-endpoint http://localhost:3900 \
--s3-access-key-id $GARAGE_ACCESS_KEY \
--s3-secret-access-key $GARAGE_SECRET_KEY \
--s3-region garage \
--s3-force-path-style \
--transfers 32 \
--fast-list \
--stats-one-line \
--stats 10s \
--stats-log-level NOTICE \
":s3:$BUCKET" "$BACKUP_BASEDIR/buckets/$BUCKET" 2>&1
;;
esac
done
echo "========= DONE SYNCHRONIZING =========="
if [ ! -d "$BACKUP_BASEDIR/snapshots" ]; then
mkdir "$BACKUP_BASEDIR/snapshots"
fi
SNAPSHOT="$BACKUP_BASEDIR/snapshots/buckets-$(date +%F)"
if [ ! -e "$SNAPSHOT" ]; then
echo "Making snapshot: $SNAPSHOT"
btrfs subvolume snapshot "$BACKUP_BASEDIR/buckets" "$SNAPSHOT"
btrfs prop set "$SNAPSHOT" ro true
fi