dynamodump
Simple backup and restore script for Amazon DynamoDB using boto to work similarly to mysqldump.
Suitable for DynamoDB usages of smaller data volume which do not warrant the usage of AWS Data Pipeline for backup/restores/empty.
dynamodump supports local DynamoDB instances as well (tested with dynalite).
Usage
usage: dynamodump.py [-h] [-a {zip,tar}] [-b BUCKET] [-m MODE] [-r REGION]
[--host HOST] [--port PORT] [--accessKey ACCESSKEY]
[--secretKey SECRETKEY] [-p PROFILE] [-s SRCTABLE]
[-d DESTTABLE] [--prefixSeparator PREFIXSEPARATOR]
[--noSeparator] [--readCapacity READCAPACITY] [-t TAG]
[--writeCapacity WRITECAPACITY] [--schemaOnly]
[--dataOnly] [--skipThroughputUpdate]
[--dumpPath DUMPPATH] [--log LOG]
Simple DynamoDB backup/restore/empty.
optional arguments:
-h, --help show this help message and exit
-a {zip,tar}, --archive {zip,tar}
Type of compressed archive to create.If unset, don't
create archive
-b BUCKET, --bucket BUCKET
S3 bucket in which to store or retrieve backups.[must
already exist]
-m MODE, --mode MODE 'backup' or 'restore' or 'empty'
-r REGION, --region REGION
AWS region to use, e.g. 'us-west-1'. Can use
AWS_DEFAULT_REGION for local testing. Use 'local' for
local DynamoDB testing
--host HOST Host of local DynamoDB [required only for local]
--port PORT Port of local DynamoDB [required only for local]
--accessKey ACCESSKEY
Access key of local DynamoDB [required only for local]
--secretKey SECRETKEY
Secret key of local DynamoDB [required only for local]
-p PROFILE, --profile PROFILE
AWS credentials file profile to use. Allows you to use
a profile instead of accessKey, secretKey
authentication
-s SRCTABLE, --srcTable SRCTABLE
Source DynamoDB table name to backup or restore from,
use 'tablename*' for wildcard prefix selection or '*'
for all tables. Mutually exclusive with --tag
-d DESTTABLE, --destTable DESTTABLE
Destination DynamoDB table name to backup or restore
to, use 'tablename*' for wildcard prefix selection
(defaults to use '-' separator) [optional, defaults to
source]
--prefixSeparator PREFIXSEPARATOR
Specify a different prefix separator, e.g. '.'
[optional]
--noSeparator Overrides the use of a prefix separator for backup
wildcard searches [optional]
--readCapacity READCAPACITY
Change the temp read capacity of the DynamoDB table to
backup from [optional]
-t TAG, --tag TAG Tag to use for identifying tables to back up. Mutually
exclusive with srcTable. Provided as KEY=VALUE
--writeCapacity WRITECAPACITY
Change the temp write capacity of the DynamoDB table
to restore to [defaults to 25, optional]
--schemaOnly Backup or restore the schema only. Do not
backup/restore data. Can be used with both backup and
restore modes. Cannot be used with the --dataOnly
[optional]
--dataOnly Restore data only. Do not delete/recreate schema
[optional for restore]
--skipThroughputUpdate
Skip updating throughput values across tables
[optional]
--dumpPath DUMPPATH Directory to place and search for DynamoDB table
backups (defaults to use 'dump') [optional]
--log LOG Logging level - DEBUG|INFO|WARNING|ERROR|CRITICAL
[optional]
Backup files are stored in a 'dump' subdirectory, and are restored from there as well by default.
AWS example
The following examples assume your AWS access key and secret key is present in ~/.boto
Single table backup/restore:
python dynamodump.py -m backup -r us-west-1 -s testTable
python dynamodump.py -m restore -r us-west-1 -s testTable
Multiple table backup/restore (assumes prefix of 'production-' of table names, use --prefixSeparator to specify a different separator):
python dynamodump.py -m backup -r us-west-1 -s production*
python dynamodump.py -m restore -r us-west-1 -s production*
The above, but between different environments (e.g. production-* tables to development-* tables):
python dynamodump.py -m backup -r us-west-1 -s production*
python dynamodump.py -m restore -r us-west-1 -s production* -d development*
Backup all tables and restore only data (will not delete and recreate schema):
python dynamodump.py -m backup -r us-west-1 -s "*"
python dynamodump.py -m restore -r us-west-1 -s "*" --dataOnly
Dump all table schemas and create the schemas (e.g. creating blank tables in a different AWS account):
python dynamodump.py -m backup -r us-west-1 -p source_credentials -s "*" --schemaOnly
python dynamodump.py -m restore -r us-west-1 -p destination_credentials -s "*" --schemaOnly
Backup all tables based on AWS tag key=value
python dynamodump.py -p profile -r us-east-1 -m backup -t KEY=VALUE
Backup all tables based on AWS tag, compress and store in specified S3 bucket.
python dynamodump.py -p profile -r us-east-1 -m backup -a tar -b some_s3_bucket -t TAG_KEY=TAG_VALUE
python dynamodump.py -p profile -r us-east-1 -m backup -a zip -b some_s3_bucket -t TAG_KEY=TAG_VALUE
Restore from S3 bucket to specified destination table
## source_table identifies archive file in S3 bucket from which backup data is restored
python2 dynamodump.py -a tar -b some_s3_bucket -m restore -r us-east-1 -p profile -d destination_table -s source_table
Local example
The following assume your local DynamoDB is running on localhost:4567 and is accessible via 'a' as access/secret keys.
python dynamodump.py -m backup -r local -s testTable --host localhost --port 4567 --accessKey a --secretKey a
python dynamodump.py -m restore -r local -s testTable --host localhost --port 4567 --accessKey a --secretKey a
Multiple table backup/restore as stated in the AWS examples are also available for local.