This presentation is aimed at IT managers, DevOps or Developers in an IT organization, as it presents an in depth exploration of the architecture and internals of Cassandra databases with OpenStack Trove. The presentation will start with an overview of the Trove architecture, exploring such concepts as "How does Trove interact with other OpenStack services", "What are the various components of Trove", "What are guest agents", "How are requests to Trove processed", and "How does Trove support multiple database types". It will next explain how Trove supports the Apache Cassandra NoSQL database and how to deploy and manage a Cassandra database with Trove. It will then describe Trove's framework for implementing clustering and how Cassandra clusters are deployed through Trove. It helps the participant understand the internals and architecture of Trove and provides the participant with knowledge that would be useful in assessing, deploying and managing a Cassandra database with Trove.

1. Managing Cassandra Databases with
OpenStack Trove
September 24, 2015
Amrith Kumar
CTO, Tesora, Inc
@amrithkumar

2. What are we going to be talking about?
What’s Cassandra?
What’s Datastax
What’s OpenStack? What’s Trove?
Architecture of OpenStack Trove
Capabilities of OpenStack Trove
How OpenStack Trove supports multiple databases
OpenStack Trove capabilities for Cassandra
…
Q&A
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3. What is OpenStack? What is Trove?
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The OpenStack Mission: to produce the ubiquitous Open Source Cloud
Computing platform that will meet the needs of public and private clouds
regardless of size, by being simple to implement and massively scalable.
OpenStack is open source, openly designed, openly developed by an open
community.
https://wiki.openstack.org/wiki/Main_Page
The OpenStack Open Source Database as a Service Mission: To provide scalable
and reliable Cloud Database as a Service provisioning functionality for both
relational and non-relational database engines, and to continue to improve its
fully-featured and extensible open source framework.
https://wiki.openstack.org/wiki/Trove

4. The Core OpenStack Services
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Image from OpenStack Installation Guide (Havana) http://docs.openstack.org/havana/install-guide/install/apt/content/ch_overview.html

5. RackSpace
& HP
Brief History of OpenStack Trove
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Started by
Rackspace &
HP as Red
Dwarf - MySQL
Enters
incubation,
multi-DB
support, eBay
joins
community
Part of
integrated
release,
Tesora joins
community
PostgreSQL
support,
MySQL
replication,
MongoDB
cluster
support
MySQL
clusters,
failover, DB2,
CouchDB
“Havana”
Oct 2013
“Icehouse”
Apr 2014
“Juno”
Oct 2014
“Kilo”
Apr 2015

6. OpenStack Trove Architecture
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7. Trove Functionality
• Provisioning
– Single instances, Replicated groups, Clusters
• Backup and Restore
• Replication
• Clustering
• Database configuration management
• Resizing instances and storage
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8. Why this makes sense
• Databases are complex
– Setup is complex and unforgiving
– Failure modes are complex
– Configuration options are numerous
• Data Loss and Data Security are paramount
• There are a number of databases in the organization
– SQL, NoSQL, Relational, Object Store, Graph, Key-Value, …
– Expertise is often fragmented
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9. What Trove offers
• A common API for standard operations
– Across all databases
• Abstractions for popular database constructs
– Replication, Clustering, HA
• Management and Data plan clearly isolated
– Applications have direct database access
• Integrates best practices for each database
– Built into Trove
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10. Provisioning workflow (single instance)
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11. Generate a database backup
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12. Provisioning workflow (from a backup)
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13. Provision a database replica
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14. Provision a database cluster
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15. Apply a configuration change
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16. Grow a cluster
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17. Resize an instance
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18. Database support
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MySQL Percona including PXC MariaDB
Cassandra MongoDB Redis
PostgreSQL Couchbase CouchDB
Vertica DB2 Express Oracle 11g and Oracle 12c*
* Support for Oracle 11g and Oracle 12c are provided by Tesora DBaaS Platform
Not all databases support all capabilities.

19. Support for Cassandra and Datastax
• Trove has supported Cassandra from inception (Icehouse release)
• Support for clustered configurations coming soon
• Tesora will be adding support for Datastax
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20. Who is Tesora?
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Kilo Release Commits (March 2015)
• Leading contributor to the project
• Provides Tesora DBaaS Platform
• An enterprise grade platform
• Based on Trove
• Differentiation
• Certified Guest Images
• Support and Services
• Additional databases
• Early access to new features
• Customizations to Horizon UI

21. About Tesora
• The Trove company
• We wrote the book on Trove (literally)
• Web: http://www.tesora.com
• Twitter: @tesoracorp
• We’re hiring!
– Boston (Cambridge)
– Toronto (Mississauga)
– Email careers@tesora.com
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