I've observed a few DNS related issues recently. Currently, gmetad uses the host names returned in the XML from gmond to create and locate RRDs for each host.
Some of the problems and possible ideas: - capitalisation is inconsistent and can even change, RFC specifies that it is not important: maybe gmetad should convert everything it receives to lower case? - hosts can move amongst domains, or be reachable under multiple domains in some weird setups: maybe there needs to be an option to tell gmetad to drop the domain and just assume that host names are globally unique? - if DNS is unavailable when gmond comes up, it starts recording the received metrics using IP addresses instead of host names, and the IP addresses become `stuck' in gmond: maybe it needs to keep retrying the DNS name, rather than becoming stuck on the IP address? - maybe use UUIDs instead of hostnames? The UUID could be generated by `gmond -t' and stored in each gmond.conf. gmetad would create a directory for each UUID, and maybe a symlink from the hostname for convenience. ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
