Download pdf - Plone Deployment WPD2009

Plone Conference 2009 – Federico C. Guizzardi – 21 Aprile 2009

Plone Deployment

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Introduction

• Different scenarios– Different page types– Page composition

• Hard to estimate– Many variables:

hardware, bandwidth, ...

– Multiple benchmarks

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Zope

• Is the application server• It does the low level

management• It is completely

integrated

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Vanilla Plone + Apache

• “Classic”• Practical (ports,

statistics, etc.)• Configuration

– Virtualhost– Advanced solutions– etc.

Webserver

Internet

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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 + Varnish + Apache

• Reduced response time

• More user load• Lower machine

load

Internet

Webserver

Cache Sys

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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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Architecture on multicore server

Internet

Webserver

Cache Sys

Load Balancer

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• 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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Distributed Architecture

Internet

Webserver

Cache Sys

Load Balancer

s1

s3

s4 s5

s2

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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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With Relstorage

Internet

Webserver

Cache Sys

Load Balancer

s1

s3

s4

s2

Oracle / Postgres

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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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Distributed Architecture: when?

Always

if possible.

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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 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 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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Case1: Logcluster

• www.logcluster.org• 3 Zope/Plone + ZEO• Daily updates• 20k requests a day

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• 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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http://www.eol.ucar.edu

http://www.eol.ucar.edu


Questions?

Data on performances and different setups available on request

[email protected]

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mailto:[email protected]

mailto:[email protected]