Re: [SSI-users] LVS or openSSI

[Ivan K. <kr...@fa...>]

Carlos Ruiz wrote:
> as I understand openSSI and LVS are two different solutions one
> process load balancing based and the other port load balancing
> based am i correct???? where they start to complement each other??

Easy on the question marks, you might hurt yourself. I'd urge you to read
the documentation, carefully: http://www.openssi.org. This'll answer
your question fully.

An executive summary is that while OpenSSI does give the impression
of one large 'virtual' machine, processes still execute on specific
nodes in the cluster. This means that if you have one node running
apache, and that node fails, OpenSSI won't magically restore apache
service on some other part of the 'virtual machine'. However, if you
instruct OpenSSI to run apache on multiple nodes in the cluster, you
can then use LVS to transparently loadbalance between them, meaning
that one node failing will not discontinue the service entirely.

For things like MySQL+Apache, I recommend not running OpenSSI, and
just using LVS.

-IK