[GRASS5] grass.itc.it: up again - IP traffic restrictions

[Bernhard Reiter]

Markus,
thanks to you and ITC-irst
for the continuing efforts to host GRASS.

	Bernhard

On Wed, Jun 04, 2003 at 11:32:35AM +0200, Markus Neteler wrote:
> The main site 'grass.itc.it' is up again - the provider
> has resolved the network problems.
> 
> Some changes:
> 
> As the internet traffic consumed nearly all bandwidth of 
> our institute, we have activated "apache-throttle" to keep
> the maximum traffic below a certain limit over a given period.
> 
> If you get a message: 
>   "503 - Service temporarily not available"
> the server is overloaded. Please use a mirror site close to you.
> Probably the "throttle" parameters have to be tuned in a few days.
> 
> The current policy is:
> - allow 1 Mbit/4sec in general, otherwise "sleep" two seconds
> - allow 500Kbit/2sec per IP, otherwise "sleep" two seconds
> 
> We have to see how to treat short peaks.
> 
> 
> Mirroring with rsync - changes:
> 
> Also the mirror sites will be reorganized to use cascaded mirroring. 
> rsync connections to grass.itc.it will be only allowed for a few
> mirror sites. These mirror sites will provide rsync access for
> other mirrors and third party connections.
> 
> All changes are needed to reduce the network load here at ITC-irst.
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