[Spread-users] trouble setting up my first spread network

John Robinson jr at vertica.com
Fri Feb 16 13:10:54 EST 2007

The broadcast address is really whatever ifconfig tells you it is.  It 
is possible to use a network mask that has neither 8 nor 16 bits of 
localhost number; I was just going by the old conventions.  We have 
already seen this with our spread deployments.

Spread certainly uses broadcasts.  You have to read through some of the 
design papers, or the code, to figure out when, or maybe someone more 
knowing than I can answer.

But in general, if you have firewalls of any sort within your cluster, 
you will have trouble achieving happines with clustering applications.

Allen Brunson wrote:
> John Robinson wrote:
>  >> Spread_Segment {
>  >
>  > Should that broadcast address be  Check ifconfig on
>  > one of your interfaces.
> so that thing at the beginning of the config is a broadcast address?  
> because i'm pretty sure udp broadcasts won't work on our network.  the 
> admins have it partitioned off so thoroughly that no two computers are 
> in the same collision domain.
> anyway, i tried setting it to, that didn't work either.  
> also, i figured out how to get spmonitor to show me the spread daemon 
> status, but the numbers are all greek to me.
> so are the daemons communicating with each other via datagram broadcasts?
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