OpenStack Backup, Restore, DR (Freezer)

Agenda
Onboarding – You, me, … WEPart 1
What kind of business use-cases can
Freezer offer you today?
Part 2
Ideas - What can Freezer offer in the
future
Part 3
https://bit.ly/bos-freezer

Part 1
• Onboarding – You, me, … WE

• Standing in front of you are ..
• 3 people with different backgrounds
and different companies.
• We are:
• (1) Saad Zaher
• (2) Elena Lindqvist
• (3) George Offord
• And the common denominator is ...?
Openstack and FREEZER
Quick intro ….

.. And who are you?
• what are you most interested in?
• Private clouds?
• Hybrid clouds?
• Public clouds?
• What is your Industry background?
• How much do you already know?
• Novice?
• Experienced?
• Expert?
• What useful takeaways can we share with you
today?

Create strong support for your Business Cases
• Think carefully, plan carefully … and then do it again! Cost savings are
calculated according to many different parameters.
• You have to pay attention to the fact that the actual challenge is to define
and calculate the savings from an e2e perspective.
• It is necessary to take into consideration transformation costs as well!
• Below are listed some strategic important decisions which will drive the
TCO from the operator perspective.
• 1. Do we go for an infrastructure convergence model or not?
• 2. How can we FULLY automate the service, control the network and
guarantee continuous operational status?
• 3. Among the many additional building blocks we have the question
about which product should we choose, and which vendor?
• 5. Which technology should we invest in? ... Open source or not?
What is the licensing model ?
• 6. What is the support model? What do we have to pay for support?
• .... what SLAs do we need in order to cover the entire Cloud environment,
while at the same time insuring that the SLAs share responsibility between
virtualization, real hardware, and VNF suppliers?

So, why
backups??
• Backups are needed to protect information
from being lost. The causes for information loss
can be : data deletion or corruption, theft,
hacking, fire , etc ...
• In case of an incident, a backup needs to be
restored quickly which means minimizing
system downtime.
• Lack of a proper backup and restore system
means long system downtime, which results in
significant $$$ loss.

… other reasons for having a Backup?
Application bugs
Power failure
Legal requirements
Compliance
*Let's bring some numbers into the picture; see the next slide.

…the average
cost of
downtime is
$5,000 per
minute
• Average Outage Period 
resolution time per outage is around 200 minutes
(@ 5000/min=$1,000,000).
• Downtime: Impact on Reputation and Loyalty  What is
your reputation worth?
• Impact to Employee Productivity  Downtime cost
impacts employee productivity
• Cost of Downtime  Calculate it Yourself!
• How much do you lose from unexpected downtime of
your servers & business applications?
• The simplest way to calculate potential revenue losses
during an outage is with the equation:
• LOST REVENUE = (GR/TH) x I x H
• GR = gross yearly revenue
• TH = total yearly business hours
• I = percentage impact
• H = number of hours of outage

Part 2
• What kind of business use-cases can Freezer
offer you today?

Business Use-Case 01
• Besides being an efficient working system,
the customer wants a modular system that
can be easily maintained and supported if
necessary.
• Freezer offers such a logical hierarchical
architecture making use of well known
established Openstack modules.

FREEZER
• The architecture of a system
describes its major
components, their
relationships (structures), and
how they interact with each
other.

• Freezer is an enabler, helping to enable a
smooth transition towards digital
transformation

Soft migration of Legacy
backups
• Legacy backup & cloud backup - A soft
migration from the old backup to the new
cloud backup
• This is done by putting a Freezer agent on
the Legacy backup HW.
• Every time you do a backup on the Legacy
HW, it will also be backed-up in the cloud.
• The Legacy backup is being added to your
cloud backup in runtime, in the end you
will have backed up all your legacy volume
backup to the cloud backup.
• So why is this good for the customer?
• Freezer is an enabler for migrating backups in a soft and easy way from native to cloud
(simplicity = $ saved).
• Backups for the native solution can be stored in one place in Freezer. One storage place
for backups means less overhead for admin of the backups.
(less admin overhead = $$ saved).
• All Licensing connected with the Legacy system for backups can be quickly discontinued.
(fewer licenses = $$$ saved).

What sets
Freezer apart
from the
others?
• TECHNICAL INFORMATION
• Freezer uses ‘rsync’ instead of ‘tar’ for updating backups
• Why? And what does this mean for performance?
• Background.
• Before rsync, Freezer had only one type of engine to backup files – the TAR engine.
This type of an engine allowed the user to preinstall the tar binary for backup and
restore of local files.
• There are Pros & Cons for using “rsync” instead of “tar”
• PRO:
• Rsync engine description. The main feature of this engine is block-based
incremental support. It means that in case a file was changed freezer will backup
only the changed blocks in the file. In this way, it enables use of less space for
writing the incremental backups.
• This is to be seen in comparison to the tar engine which rewrites the entire file
even if there is only a minor incremental change found in the entire file.
• In specific cases rsync is way faster than tar, when there are only small incremental
data changes in a large volume of data because it only transfers the modified
blocks
• CON:
• But rsync needs to do fstats on each file, so rsync is therefore 30% slower than tar.
In the scenario where large volumes of data with many changes in the data need to
be backed-up, the 30% slower factor will have a negative impact!

•Freezer is a single solution that may be used
for all your backups

Freezer is a versatile
solution that can be used
for nearly all backups
• Backup-as-a-Service
- Freezer is a flexible tool!
• This is done by putting a Freezer agent
wherever you would want to backup
volumes.
• Freezer can be used to backup:
• VMs
• Desktops
• Physical hosts on your hardware
• Applications on Windows
• So why is this good for the customer?
• Freezer as a single tool being used to handle multiple backup scenarios - offers your
network operations simplicity.
(and once again, simplicity and less admin overhead = $$ saved).
• Freezer requires no licensing. All Licensing connected with multiple backup tools that
you, the customer have in use for different backup scenarios today, can be quickly
discontinued.
(fewer licenses = $$$ saved).

FREEZER
&
BaaS

•And even yet another scenario when the
customer wants to leverage solutions to other
clients, multiple clients ………..
•Freezer can then be offered as a Backup-as-a-
Service ...

Freezer a BaaS platform for
Openstack cloud instances
• It provides a Web UI panel in
Horizon, API endpoints to store
meta data and backup
configurations.
• The client component saves you
time and money by executing
efficiently data backup and
restore, leveraging Swift
Storage.
• It supports Windows and Linux

Incremental encrypted
backup
• A very important feature of
Freezer is that when it performs
backup it performs incremental
encrypted backup!
• This enables Freezer to achieve
a high level of integrity and
consistency for backups of the
main data base technologies
(i.e. MySQL, MongoDB,
MSSQL).

FREEZER in
action –
Backup &
Restore
DEMO
https://youtu.be/8phin9J3-0U

Freezer in Production
USE-CASE
Freezer is used in every Helion
deployment to backup
• Mysql Database every 12 hours
• Lifecycle Manager’s information every 48 hours
• Swift rings every 24 hours
Backups are stored by default in Swift
and optionally in a remote SSH server
Everything (including jobs) is deployed
through Ansible

Part 3
• Ideas - What can Freezer offer in the future

Scenario: Disaster Recovery
The Business Case for a DRaaS Solution

DR Architecture
26
Compute AZ2
OS Db OS Db
Freezer-dr-agent
Backbone
Compute AZ1
Freezer-dr-Agent
Block
AZ1
Block
AZ1
Block
AZ2
Block
AZ2
DC1 DC2
Freezer-api Controller
Freezer-api
Freezer-api Controller
Controller
Freezer-api
Freezer-api
Freezer-api
Controller
Controller
Controller
Compute
DR AZ2
Freezer-dr-agent
Compute
DR AZ1
Freezer-dr-agent
BGP/OSPF
X.X.X.X/24
Y.Y.Y.Y/24
X.X.X.X/24
Y.Y.Y.Y/24
Float IP Float IP
Freezer-dr Freezer-dr
Freezer-dr

Disaster Recovery
• The impact to your business from
unexpected downtime is
immeasurable. Almost half of small to
medium businesses that incur a
major technology catastrophe never
recover.
• The effectiveness of employees and
loyalty of your customers all hangs on
the technology choices you make.

Compute nodes failure
28
Any monitoring
system for compute
nodes
Any fencing driver
Any evacuation
driver
Any notification
system
Pluggable
Architecture
Health checker
Check nova / neutron for failed hosts
Check status of freezer-agent
Check Monasca / other monitoring
Check IPMI / Watchdog
Fencer
Fence host (Freezer or ipmi)
Disable host/maintenance
Evacuation
Evacuate host
Eventually livemigrate
Notifier
Notify impacted users

Think ahead …..…
• In order to be successful there is criteria that must be met.
• You must be able to fully automate on all layers, if this is not in
place this will accrue an extra cost for service integration.
• The architecture must be standardized otherwise you risk end up
with CLOUD solutions living in Silo architectures.
• If that happens you’ll end up paying more for licenses and
services. It might also make it impossible to reach the
expected/wanted NFV/SDN goals of reducing costs and adding
agility to the network.
• Remember that everything is driven by TCO and without a clear vision
from the operator's side there can’t be guaranteed cost savings; this
will become apparent as soon as target goals are missed.
• BUT, if everything is planned correctly by creating a clear roadmap that takes into
account service consolidation - cost savings are absolutely guaranteed (> 30% and
even more..)

Think ahead …..…
Three out of four companies worldwide,
are failing in terms of disaster readiness.
They are scoring ratings of either a D or F
grade. Only 28 percent scored an A, B or C
passing grade, with the remaining 72
percent of respondents at risk.
• "54 % of disasters are caused by
software or network failure."
• A key part of almost every disaster
recovery plan is backups.

Useful LINKS
• Repo:
https://github.com/openstack/freezer
• Launchpad:
https://launchpad.net/freezer
• The package:
https://pypi.python.org/pypi/freezer
• Wiki:
https://wiki.openstack.org/wiki/Freezer
• Roadmap:
https://wiki.openstack.org/wiki/FreezerRoadmap
• Chat with the team: #openstack-freezer IRC
channel on chat.freenode.net

Thank you for joining today’s
presentation!

OpenStack Backup, Restore, DR (Freezer)

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