Hi Richard,
this is something on my to-do list. I really would like to have a
"hostname" or "gname" (or whatever) property in the host XML that can
be set via the config file. That way you can:
a) name the hosts as you like
b) help situations like yours
If only time permits ... Patches are welcome :-)
Cheers
Martin
--- [EMAIL PROTECTED] wrote:
> I run gmond predominently on windows hosts that mostly have
> 2 NICs. While many hosts have NIC teaming, many hosts do not,
> and sometimes (semi-randomly) the src address for UDP data will
> flick from one host IP to the other.
>
> The effect of course on gmond and thence gmetad is that you get
> 2 XML entries for the host, 1 with the new IP, and with the old IP
> which does not get updated, and will eventually be reported as down.
> Depending on which XML entry comes last, one either does not notice
> this,
> or you get erroneous host down statuses.
>
> So what is the best thing to do about this?
>
> The pertinent code snippet in gmond.c is:
>
> static Ganglia_host *
> Ganglia_host_get( char *remoteip, apr_sockaddr_t *sa, Ganglia_message
> *fullmsg)
> {
> apr_status_t status;
> apr_pool_t *pool;
> Ganglia_host *hostdata;
> char *hostname = NULL;
>
> if(!remoteip || !sa || !fullmsg)
> {
> return NULL;
> }
>
> hostdata = (Ganglia_host *)apr_hash_get( hosts, remoteip,
> APR_HASH_KEY_STRING );
> if(!hostdata)
> {
> /* Lookup the hostname or use the proxy information if
> available
> */
> if( !hostname )
> ...
>
> The hosts structure being keyed from the remoteip causes the problem.
> Perhaps
> if I keyed this hash with a hostname, and had a separate hash to
> optimise the
> ip -> hostname mapping, perhaps that will do?
>
> I would appreciate guidance.
>
> thanks,
> Richard
>
>
>
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Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www: http://www.knobisoft.de
