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odoyle_232367's avatar
odoyle_232367
Icon for Nimbostratus rankNimbostratus
Apr 28, 2016

Question about big3d_install script

Hello,

 

I am getting started on a BIG-IP DNS setup on our network with already existing LTM servers. I was curious, when running the big3d_install script so all the servers can authenticate to each other, is there any sort of disruption to the LTM side of things that i need to be concerned about? I did a bit of searching and couldn't find anything stating that this script would have any impacts on production, but with being so green with the product I wanted to make sure that this was the case definitively.

 

Thanks,

 

BIG-IP DNS
configuration
devops

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  • IanB's avatar
    IanB
    Icon for Employee rankEmployee
    May 05, 2016

    In addition to exchanging keys (to allow iquery to use key based authentication) big3d_install also pushes out the big3d binary from the current system. When big3d (re)starts on the remote system, it checks to see if the version in /shared/sbin is newer (based on the file date), and uses that version in preference if it is.

     

    So running big3d_install can cause a momentary disruption to the iquery mesh. If you just want to exchange keys, you can use bigip_add instead, which does the same thing, except without touching big3d.

     

    If you've got some really tight timeouts and you happened to restart big3d at just the wrong moment, then I guess you might end up with GTM briefly marking a virtual or gtm server object as down, but there would no interaction with the LTM side of things.