[CentOS] Load Balancing
Dan Trainor
dan.trainor at gmail.com
Tue May 23 19:49:47 UTC 2006
Fabian Arrotin wrote:
>On Tue, 2006-05-23 at 10:38 -0700, Dan Trainor wrote:
>
>
>>Chris Mauritz wrote:
>>
>>
>>
>>>Mace Eliason wrote:
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>We are starting a new project, and are trying to decide the best way
>>>>to proceed. We want to setup a LAMP configuration using Centos,
>>>>something we have been doing in the past with great success.
>>>>
>>>>The question is load balancing. We antisipate the potential for the
>>>>system to receive 500,000 requests/ day with in the next year. We
>>>>want to plan for that extra load now as we start the project. What
>>>>would you suggest for setups for multiple servers for redundancy and
>>>>load balancing?
>>>>
>>>>I have setup MySQL replication and that works fine but what about the
>>>>rest of the system. I know it is quite simple to setup with windows
>>>>2003 server.
>>>>
>>>>Would a cluster be the way to go? Ideally we would like 2-? severs
>>>>setup that are all identical and sharing the load as need be, and if
>>>>one fails users would notice nothing.
>>>>
>>>>I have also thought of just looking for a hosting company that offers
>>>>load balancing servers and not worry about it but we like to have
>>>>control.
>>>>
>>>>Thanks for any suggestions
>>>>
>>>>
>>>Perhaps this will help get you started:
>>>
>>>http://www.howtoforge.com/high_availability_loadbalanced_apache_cluster
>>>
>>>Cheers,
>>>
>>>
>>Hi -
>>
>>FWIW, I've been toying around with this as well. Right now I'm trying
>>to decide which shared storage mechanism we'll be using for the nodes
>>themselves. We need to keep the data consistant across 10+ machines,
>>which will be serving this content.
>>
>>If this hasn't been mentioned before, I've been using LVS for a while,
>>with a whole lot of success. It's smart, scalable, and works quite
>>well. If you're looking for an open-source load balancing and
>>distribution system, I highly suggest you investigate this.
>>
>>If anyone wouldn't mind chiming in with some ideas, I'd greatly
>>appreciate it. I'm sure others would, too,
>>
>>Thanks!-
>>-dant
>>_
>>
>>
>
>For the backend storage, it depends what's your budget ... :o)
>A minimal setup is to use nfs on a central server to host/share the same
>data across all your machines ... the problem in this config is that the
>nfs server becomes the single point of failure ... so why not using a
>simple heartbeat solution for 2 nfs servers acting as one and uses drdb
>between these 2 nodes for the replication ...
>Other method is to have a dedicate san with hba in each webservers but
>that's another budget ... :o)
>
>Just my two cents ...
>
>
>
HI, Fabian -
I've been toying aroudn with both NFS and GFS, but NFS does leave me
with a single point of failure. I'd rather not use something like drdb,
however. I'm still researching GFS to see if it's a viable alternative
for what I'm looking for.
Thanks!
-dant
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