osvolbackup 0.0.2

OpenStack volume based backups tool

OpenStack Server Volumes Backup and Restore Tool
================================================

This command line utility can be used to backup/restore OpenStack volume backed server instances using Cinder backup service.

Screenshot
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.. image:: imgs/osvolbackup_test.png
:target: imgs/osvolbackup_test.png
:alt: Screenshot


Features
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* Live instance backup

* See ``consistency restrictions`` below
* Embed essential metadata in backup description
* Export backup volume metadata to file

Requirements
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* Python2.7+ and the OpenStack API libraries
* OpenStack environment with volume backed server instances
* OS environment variables set for the admin project ``(source stackrc)``
* `Cinder backup service <https://docs.openstack.org/cinder/queens/configuration/block-storage/backup-drivers.html>`_ properly configured
* Tested on [RedHat Open Stack Platform 13], should work on other OpenStack Queens based distributions

:warning: Live Backup Consistency Restrictions :warning:
--------------------------------------------------------

Live backup consistency of openstack images is dependent in the following conditions:


#. When using kvm/libvirt, guests must have the `Qemu guest agent <https://wiki.libvirt.org/page/Qemu_guest_agent>`_ installed, backups will succeed if the agent is not available, consistency will depend in the guest IO activity during the snapshot»
#. Nova API create image function does `not wait for snapshot creation <https://github.com/openstack/nova/blob/master/nova/compute/api.py#L3094>`_ before unfreezing the I/O, consistency will depend on the block device driver snapshot technology, it may depend on the guest IO activity during the snapshot creation

How to install
--------------

.. code-block:: sh

pip install --user osvolbackup

How to run from source
----------------------

.. code-block:: sh

git clone https://github.com/CCSGroupInternational/osvolbackup.git
cd osvolbackup.git
pip install --user -rrequirements.txt
python -m osvolbackup server «server_name»

How to test:
------------

.. code-block:: sh

# Create a test server
export SERVER_ID=test_server
tests/create-test-server.sh

# Create the backup
VERBOSE=1 python -m osvolbackup server ${SERVER_ID}

# Delete the test instance
openstack server delete ${SERVER_ID}
openstack volume delete ${SERVER_ID}_boot

# We use the instance uuid because the server name was deleted
INSTANCE_ID=$(openstack volume backup list | grep ${SERVER_ID}|cut -d" " -f4)
# Restore with the original config
VERBOSE=1 python -m osvolbackup server $INSTANCE_ID --restore last
# Restore with a different network config
VERBOSE=1 python -m osvolbackup server $INSTANCE_ID --restore last --network net1:10.3.1.99

Copyright
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© 2019 CCS Group International, distributed under the `Apache-2 license <LICENSE>`_.