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Talk held on 2011-05-16 at Amazon AWS Tech Summit for Developers and Architects speaker directory in Berlin. Infopark is a Software Vendor from Berlin, Germany. Our flagship product, the Content Management System "Infopark CMS Fiona" is originally a popular packaged software product for large enterprise customers. This talk describes our motivation and lessons learned by converting it to a multitenancy enabled piece of software, replacing the SQL database backend with CouchDB and deploying it to Amazon AWS (EC2, S3, CloudFront) using Scalarium.
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AWS Tech Summit for Developers and ArchitectsBerlin, 2011-05-16
Lessons Learned fromConverting a Web Application
to Multitenancy and Deploying it toAmazon Web Services
using Scalarium
http://twitter.com/thomas_witt
Thomas Witt
@thomas_witt
http://www.infopark.de/
Since 1997 …
Director Product & Business Development
Great Websites run InfoparkFounded in 1994 in Berlin
CMS, CRM and Online Marketing Software
Large Websites for Enterprises
http://www.infopark.de/references
References
http://www.infopark.de/references
References
infopark.de/references
What are we going to learn …
Why did Infopark move to «The Cloud»™?
How did we do it?
What did we learn from it?
Why?(You will be cloudified. Resistance is futile.)
Enterprise Software Installation sucks.
http://www.alexa.com/siteinfo/cortalconsors.de
http://www.alexa.com/siteinfo/munich-airport.de
Modern Web-Sites have to be cloud
based.
Multitenancy(Yes, we scale!)
“
http://en.wikipedia.org/wiki/Multitenancy
Multitenancy refers to a principle in software architecture where a single instance of the software runs on a server, serving multiple client organizations (tenants).
Enabling Multitenancy
Create a "shared nothing" architecture
Move all configuration into the database
Extract background tasks
Choose database tenantwise
Implementing DB switching is easy
tenant = request.host.split('.').first
begin @@db ||= CouchRest.database(tenant)rescue raise "tenant name '#{tenant}' doesn't exist"end
SaaS Cluster
AZ 3AZ 2AZ 1
System Architecture Fiona on SaaS
EC2: Fiona, OMC, DB, Search
EC2: Fiona, OMC, DB, Search
EC2: Fiona, OMC, DB, Search
EC2: Fiona, OMC, DB, Search
EC2: Fiona, OMC, DB, Search
EC2: Fiona, OMC, DB, Search
Elastic Load Balancing: *.saas.infopark.net
Scalarium
S3: Assets (Blobs)
SES:E-Mail
DB Backup Server
Redis/Resque
CustomerAZ 1 AZ 2
EC2:Rails,
DB Replica
EC2:Rails,
DB Replica
Elastic Load Balancing:customer.com
S3
+CloudFrontCDN
GitHub
Hoptoad
New Relic
http://broadcast.oreilly.com/2011/04/the-aws-outage-the-clouds-shining-moment.html
Use multiple Availability Zones!
Database(Choose wisely)
Problems with SQL databases in the cloud
Bottleneck
Doesn‘t scale
Single point of failure
Adding new Replicas
Consistent backups
Recovery times after crashes
SQL databases are not built for the
cloud.
http://en.wikipedia.org/wiki/CAP_theorem
NoSQL databases ARE built for the
cloud.… by trading off consistency for partition tolerance
http://couchdb.apache.org/
Database backend
Advantages
Simple handling
Better replication
Stability and reliability
Schemaless
Lots of flavours
CouchDB/BigCouch, SimpleDB, MongoDB, …
We have chosen BigCouch.
Automatize!(Scalarium is your friend)
http://www.opscode.com/chef/
Your server – à la carte
Auto Healing (and scaling)
http://www.scalarium.com/
Automatize using Scalarium
Automated Machine Installs
No hassle with AMI Images
Always install from scratch
Using Chef Recipes
Monitoring and Scaling
Auto Healing
Time Based Scaling
Load Based Scaling
Security(… there's lots of interesting data in the cloud)
https://aws-portal.amazon.com/gp/aws/developer/account/
Have multiple AWS accounts
IAM
Security is important!
Have multiple AWS accounts
Use IAM• Rotate your keys• Use an MFA Device• Lock up your master account
Clear concept how to handle policies, accounts, groups
Have lots of Account/Key Pairs with restricted access
Automatize everything• Security Groups• Regular Firewall checks• Account creation / deletion
People(The Human Factor)
“I don't «own» my data anymore.
“What about data privacy?
“Is your security good enough?
How can I trust you?
“My job went to SaaS!
Have good answers to these questions.
(Try to rationalize the discussion)
Disadvantages?What‘s missing?
Disadvantages? What‘s missing?
Amazon
Automated creation of multiple accounts with separate billing
API for Billing
Scalarium
Access Rights
Security Groups
MFA Support
Have a scalable multitenancy architecture
Automatize everything
Don‘t forget The Human Factor
Conclusion
Infopark AG • Kitzingstraße 15 • D-12277 Berlin • www.infopark.de • [email protected]
[email protected]+49-151-140690-23
Twitter: @thomas_witt
Thomas Witt
That's a wrap!
Thank you!
Director Product & Business Development
Twitter: @infoparkfacebook.com/infopark
