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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone Deployment
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Introduction
• Different scenarios– Different page types– Page composition
• Hard to estimate– Many variables:
hardware, bandwidth, ...
– Multiple benchmarks
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Zope
• Is the application server• It does the low level
management• It is completely
integrated
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Vanilla Plone + Apache
• “Classic”• Practical (ports,
statistics, etc.)• Configuration
– Virtualhost– Advanced solutions– etc.
Webserver
Internet
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Vanilla Plone + Apache
• Yes, if– Few, well
distributed contents
– Limited users– For development
• No, if– Multicore server– Stable contents– Hi concurrency
levels
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone + Varnish + Apache
• Reduced response time
• More user load• Lower machine
load
Internet
Webserver
Cache Sys
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone + Varnish + Apache
• Yes, if– Stable contents– Limited server
resources– ... in general the
suggested deployment
• No, if– Multicore server– Development– High number of
users– High number of
editors
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Architecture on multicore server
Internet
Webserver
Cache Sys
Load Balancer
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
• Yes, if– Multicore (>2)– Hi number of
users– Pages composed
by a high number of sources
• Maybe not if– Variable user load
Architecture on multicore server
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Distributed Architecture
Internet
Webserver
Cache Sys
Load Balancer
s1
s3
s4 s5
s2
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Distributed Architecture: pros
• Dynamic System– Only the necessary servers are turned on
• Fault tollerance– Zope/Plone servers are redundant– ZEO can be “distributed”
• Maintenance similar to that of a single instance– Backup, updates...
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
With Relstorage
Internet
Webserver
Cache Sys
Load Balancer
s1
s3
s4
s2
Oracle / Postgres
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Relstorage: pros
DBMS Support:- Backup and restore- Redundancy and fault tolerance- Authenticated access to the DB data- Tools of the chosen DBMS- Speed improvements*
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Distributed Architecture: when?
Always
if possible.
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone in the Cloud
• Amazon Web Services (AWS)– EC2: Elastic Cloud Computing– S3: Simple Storage Service
in practice: a solution for hosting based on virtual servers (XEN) following the principle:
"pay only for what you use, as you use it”.
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone on Cloud II
• Immediate startup– To start working with EC2 (<15 min)– To start a new server (<1 min)
• Complete autonomy of management– Turn on a new server when needed– Turn off a server if not needed– Different machine options
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Plone on Cloud III
Back to Plone again:It’s possible then to activate or turn off an
arbitrary number of instances cloning the same server, implementing a dynamic farm.
In particular on AWS:•Elastic load balancing•Autoscaling
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Case1: Logcluster
• www.logcluster.org• 3 Zope/Plone + ZEO• Daily updates• 20k requests a day
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
• www.eol.ucar.edu • 5 Zope/Plone + ZEO• 2k pages a day• 32k pages in the
first month
Case2: EOL
Thanks to Kelly Craig for the material for this case study.
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Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009
Questions?
Data on performances and different setups available on request
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