Gary,

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Aaron

On Wed, Sep 24, 2014 at 2:17 PM, Truesdale, Gary <[email protected]> wrote:
> Remove-
>
>
> Josh, can you take me off this list?
>
> Gary Truesdale P.E.
> Account Manager
> Hewlett-Packard
> 310.658.0922
>
> -----Original Message-----
> From: Josh Thompson (JIRA) [mailto:[email protected]]
> Sent: Wednesday, September 24, 2014 11:17 AM
> To: [email protected]
> Subject: [jira] [Resolved] (VCL-5) multiple web servers
>
>
>      [ 
> https://issues.apache.org/jira/browse/VCL-5?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
>  ]
>
> Josh Thompson resolved VCL-5.
> -----------------------------
>     Resolution: Fixed
>
>> multiple web servers
>> --------------------
>>
>>                 Key: VCL-5
>>                 URL: https://issues.apache.org/jira/browse/VCL-5
>>             Project: VCL
>>          Issue Type: New Feature
>>          Components: database, web gui (frontend)
>>    Affects Versions: 2.2
>>            Reporter: Josh Thompson
>>             Fix For: 2.4
>>
>>
>> Modify the frontend code to allow the existence of multiple web servers 
>> running in a load balanced fashion. The holdup for this has been due to a 
>> semaphore lock around the code that allocates a machine for a reservation. 
>> Without the semaphore, two people hitting the site at (nearly) the exact 
>> same time can end up being assigned the same machine.
>> An idea I came up with to handle this is to only run the scheduling portion 
>> of the code via the XML RPC API. A single web server would be elected as the 
>> master. All web servers would call the scheduling part of the code via the 
>> API on the master, allowing the semaphore lock to still function. If the 
>> master server goes down, an election process would determine the new master.
>
>
>
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-- 
Aaron Peeler
Program Manager
Virtual Computing Lab
NC State University

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