As David mentioned, there is a spectrum of possible solutions for disaster recovery. The solution, as always, depends on the requirements. In disaster recovery, those requirements are expressed as: 1. RPO - Recovery Point Objective - "If a disaster strikes, how far back will it set me?" 2. RTO - Recovery Time Objective - "If a disaster strikes, how long until my workload is up and running?"
The answers to both are independent and can range from "Not at all" to minutes or hours or days. A solution with high RPO and RTO is backup. Once in a while transfer your images, snapshots of your VMs and volumes, and your SQL DB to another site. If disaster strikes you can manually run your workloads from the last backup, and you have your metadata backed up too (keystone users/tenants, nova flavors, etc.). A solution with lower RPO and RTO is replication. Work is being done in Cinder to enable continuous volume replication between storage backends. You can put your Glance images in multiple locations or in multi-site Swift, and replicate your DB as well. Ideally you will be able to get to some consistent state between your data and metadata, which is not easy. For failover, you can use Heat or some other orchestration tool. There are solutions with zero RPO and RTO, where workloads run active/active in multiple sites. There are also other solutions in the spectrum. In short, the building blocks are starting to appear, but a full solution is not yet available. On Mon, Jul 6, 2015 at 8:08 PM, David Medberry <openst...@medberry.net> wrote: > Yes. > > http://docs.openstack.org/openstack-ops/content/snapshots.html > API Image Create detailed here: > > Nova: > http://developer.openstack.org/api-ref-compute-v2.1.html > It is a snapshot of the instance's image (not of the instance's in memory > state). > > Cinder: > http://developer.openstack.org/api-ref-blockstorage-v2.html > > http://lmgtfy.com/?q=nova+image+create+api > http://lmgtfy.com/?q=cinder+snapshot+api > > > On Mon, Jul 6, 2015 at 11:02 AM, Giuseppe Galeota < > giuseppegale...@gmail.com> wrote: > >> Thank you David,all, >> >> I would like to know if are there Nova/Cinder Rest APIs to execute >> VM/volume snapshot? >> >> Thank you all, >> Giuseppe >> >> 2015-07-06 18:40 GMT+02:00 David Medberry <openst...@medberry.net>: >> >>> Giuseppe, >>> >>> A great deal of Disaster Recovery planning relies on you / your >>> organization to define what they mean by DR planning. Yes, Nova snaps >>> (instance snaps) and Cinder snaps (volume snaps) can be used in DR. >>> Additionally, depending on your architecture you can utilize Swift (if it >>> is geo distributed, it gives you some measure of DR resilience.) >>> >>> I'm not aware of a howto or manual on this topic though as it varies so >>> much based on arch and definition it's not effective to make a generalized >>> recommendation. >>> >>> On Mon, Jul 6, 2015 at 10:02 AM, Giuseppe Galeota < >>> giuseppegale...@gmail.com> wrote: >>> >>>> Dear all, >>>> how can I implement a Disaster Recovery plan in OpenStack? Is there >>>> some project? >>>> >>>> Can I use the Nova/Cinder APIs to create snapshot and upload them >>>> somewhere? >>>> >>>> Thanks, >>>> Giuseppe >>>> >>>> _______________________________________________ >>>> Mailing list: >>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>> Post to : openstack@lists.openstack.org >>>> Unsubscribe : >>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>> >>>> >>> >> > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > -- *Avishay Traeger* *Storage R&D* Mobile: +972 54 447 1475 E-mail: avis...@stratoscale.com Web <http://www.stratoscale.com/> | Blog <http://www.stratoscale.com/blog/> | Twitter <https://twitter.com/Stratoscale> | Google+ <https://plus.google.com/u/1/b/108421603458396133912/108421603458396133912/posts> | Linkedin <https://www.linkedin.com/company/stratoscale>
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