A simple S3 backup script
Humus is a tool to periodically backup chunks of data (e.g. database backups) to Amazon’s S3. Humus’ features include:
- CLI tool and Python library.
- Automatic file rotation
- Automatic date based file trimming.
Why another S3 backup tool?
Most of the backup tools out there were either foucused on backing up entire directories of files or didn’t provide the rotation/trim tools I was looking for.
Installation & Use
Run pip install humus.
Create a config file like the following at ./humus.ini, ~/humus.ini, /etc/humus.ini, or /etc/humus/humus.ini:
[AWS] access_key=< YOUR AWS ACCESS KEY > secret_key=< YOUR AWS SECRET KEY > bucket=some-bucket-name # Everything after this point is optional path=backups [humus] # The number of files to exist in the S3 directory before getting trimmed count_limit=2 # The age in days where files should be trimmed age_limit=2 # The chunk size in bytes for data to be passed to bz2 chunk_size=1024 # Leave out this section if you want your backup to be unencrypted. [encryption] gpg_binary=gpg encrypt_command=%(gpg_command)s -c --no-use-agent --batch --yes --passphrase %(passphrase)s --cipher-algo AES256 -o %(output_file)s %(input_file)s passphrase=< YOUR REALLY LONG ENCRYPTION PASSPHRASE >
Run the command humus my_filename target_file or output_cmd | humus my_filename whenever you want to make a new backup.
To restore a backup, simply download the saved file from S3 using your client of choice.
If you used the encryption options above, you can decrypt your backup using the following command:
gpg -d --no-use-agent --batch --yes --passphrase < YOUR REALLY LONG ENCRYPTION PASSPHRASE > --cipher-algo AES256 -o my_file.bz2 my_encrypted_file.bz2
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
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