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Mohamed Salah Sayed
One Database and multible liferay installations
March 19, 2010 6:11 AM
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Mohamed Salah Sayed

Rank: New Member

Posts: 6

Join Date: February 6, 2009

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Hello All,
I am new to liferay and I am wandering if the following deployment scenario is okay:
1- Two legs of application servers, which has a liferay running on them.
2- One instance of web server, that load balance between the two legs.
3- One shared Database between the two application servers.

My question is, is there problems in this configuration specilly in the DB, for example the couner ids, will it be okay that the two application servers will not be confused when increamenting the couter in the db ?

Thanks for support

M.Sayed
Abhishek Saxena
RE: One Database and multible liferay installations
March 19, 2010 7:20 AM
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Abhishek Saxena

Rank: Regular Member

Posts: 130

Join Date: June 17, 2009

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Hi ,

The architecture you have proposed is fine you will not face any issues.
Its common to have multiple nodes pointing to same DB.

Which version are you on.
MICHAIL MOUDATSOS
RE: One Database and multible liferay installations
March 23, 2012 7:04 AM
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MICHAIL MOUDATSOS

Rank: Regular Member

Posts: 110

Join Date: October 4, 2011

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Abhishek Saxena:
The architecture you have proposed is fine you will not face any issues.

Don't you think he should consider disabling User indexing and entity caching?
Juan Gonzalez
RE: One Database and multible liferay installations
March 23, 2012 12:07 PM
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Juan Gonzalez

LIFERAY STAFF

Rank: Liferay Legend

Posts: 1872

Join Date: October 28, 2008

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Nop. You can have multiple nodes and having cache and indexing properly replicated.

For that only have to enable cluster link and index replication.

Please search for "cluster" in user guide/wiki, there is a section for that.
Hitoshi Ozawa
RE: One Database and multible liferay installations
March 24, 2012 2:34 AM
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Hitoshi Ozawa

Rank: Liferay Legend

Posts: 7990

Join Date: March 23, 2010

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Beside the indexes, there's also the prefetch counter problem. Setup distributed caching as Juan advised or set the counter.increment=1. If both are active, use the distributed cache. If one of them is a standby, set the counter.increment to 1.

#
# Set the number of increments between database updates to the Counter
# table. Set this value to a higher number for better performance.
#
counter.increment=100