hostid gives identical values on all FC machines

[Ulrich Drepper]

Andrew Mather wrote:

> This morning, someone went to get the hostids and found both machines
> return identical values (7f0100).  I also tried on an FC3 machine
> running on an i686 box and got the same return.

The ID you get is the result of

a) your system(s) not having a file /etc/hostid with a 4-byte value 
containing the host ID

and

b) the network setup being configured so that looking up the IP address 
for the machine returns 127.0.0.1 on both machines.


The later I consider a bug in your installation.  See what gethostname() 
reports and what the IP address associated with this name is.  Maybe 
your systems are all called localhost?  That'd be wrong, too.

Anyway, there is no good solution for all this other than creating 
/etc/hostid files.  The old machines where this interface originates 
from had magic serial number or so.  Commodity hardware doesn't have 
this (no, CPU serial numbers don't count).

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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