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Mark_35110's avatar
Mark_35110
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Jan 11, 2016

Single SCP copy via F5 - multiple end servers?

Is it possible to create a Virtual Server that copies an SCP file upload stream to multiple servers? i.e. a user sends a file to a Virtual Server IP address and rather than that be load balanced across a pool, it is instead copied to each server in the pool.

 

I know this breaks the mould of what a load balancer actually does, but I thought I'd ask the question anyway :)

 

Thanks, Mark

 

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  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Jan 11, 2016

    Hi Mark,

    I guess this configuration would be very difficult to pull of...

    • Each SCP server session would require multiple end-to-end roundtrips to negotiate the connection. So replaying the traffic multiple time wouldn't have any affect.*
    • In addition I believe it would be hardly possible to emulate the SSH server on a virtual server and then 
      [SIDEBAND]
      each individual node. The SSH encryption would causing a lot of headeaches...

    BTW: Whats the reason to not use, a single SCP session for each of your servers? (e.g. using the GNU paralel package or some 

    foreach node in nodelist
    scriptings)

    Cheers, Kai

  • Mark_35110's avatar
    Mark_35110
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2016

    Thanks for clearing that up for me. I didn't think it was possible. Mark