Hi Steve, the first (simple) idea ...
After You have copy of the rrd-files, You have set up the rdd-file permissions for the gmetad user (e.g. nobody) ? You can also check the error_log from your web server, for errors like this. If this will not help, You can export (dump) your current data and import them to the new rrd-files. For these steps have a look at the manpages (website) from rrdtool. Regards, Ron Am 20.09.2010 16:32, schrieb CHU, STEPHEN H (ATTSI): > Hi all, > > In our production system we have Ganglia 3.0.2 running on Server A > (/var/lib/ganglia/rrds/abc) for about a year to monitor 64 3.0.2 gmond > clients so we've accumulated lots of historical data. Our plan is to > migrate the setup to the latest Ganglia 3.1.7. I recently installed > Ganglia 3.1.7 gmetad on Server B with rrdtool 1.4.4, selected one of the > 3.0.2 client (let's call it client 64), uninstalled 3.0.2 gmond and > installed 3.1.7 gmond. In addition to the 64 3.0.2 clients to be > migrated, I have 16 new 3.1.7 clients to start off with Server B. The > cluster name of the 16 new clients is "xyz". Starting up Server B gmetad > and the 16 clients created /var/lib/ganglia/rrds/xyz. No problem with > the webfrontend on Server B showing everything for the 16 clients, > including the graphs. I then stopped Server B gmetad. At this point I > have not started client 64 gmond yet. I then proceed to copy Server A's > /var/lib/ganglia/rrds/abc onto Server B's /var/lib/ganglia/rrds > directory. > Start up Server B gmetad, start up Client 64 gmond. Server B Webfrontend > will not display any graphs for cluster "abc" at all. Cluster "xyz" are > fine. > > I then proceed to try the "offline rrds" method by shutting down Server > B gmetad and Client 64 gmond. Moved /var/lib/ganglia/rrds/abc to > /var/lib/ganglia/rrds.offline/abc. Reproduce the webfrontend - copy > /var/www/html/ganglia to /var/www/html/ganglia.offline. Modified > /var/www/html/ganglia.offline/conf.php to point to > /var/lib/ganglia/rrds.offline. Start up Server B gmetad and Client 64 > gmond. http://Server-B/ganglia.offline showed both cluster "abc" and > "xyz" with no graphs. Back to http://Server-B/ganglia will show cluster > "xyz" with no problem. > > My suspicion is the incompatibility of rrds between the 3.0.2 and 3.1.7 > versions which make 3.1.7 refuse to show the graphs? Something to do > with some "timing parameters" mismatch inside the rrds between the old > and the new for the webfrontend to show? > > Any thoughts or suggestions are welcome before I stop spending more time > in this. Thanks. > > Steve > AT&T Labs CSO > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Ganglia-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ganglia-general > > > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
