Hi Steve: What you should have done is after setting up Server B, copy the contents of /var/lib/ganglia/rrds over from Server A *before* starting gmetad on Server B.
Assuming all the configurations are identical between Server A and Server B, the web interface should display both the history data originally from Server A and any new data being collected on Server B. You may run into issues like mismatched hostnames, etc, so pay attention to the directory names inside /var/lib/ganglia/rrds. As to what you can do now -- if you are okay with losing the new data you have collected so far from Server B, you can attempt what I have laid out above. If not, then you may be able to run rrdtool dump (man rrddump) on the individual RRDs and try to merge the data. Another option is to customize the frontend to just read the archived RRDs from Server A as static data. Check out this post for some ideas: http://www.mail-archive.com/[email protected]/msg05508.html Cheers, Bernard On Fri, Aug 27, 2010 at 7:24 AM, CHU, STEPHEN H (ATTSI) <[email protected]> wrote: > Hi all, > > > > We have Ganglia 3.0.2 running on Server A for about a year to monitor 10 > gmond clients so we’ve accumulated lots of historical data. I recently > installed the latest Ganglia 3.1.7 on Server B with rrdtool 1.4.4, > uninstalled 3.0.2 gmond and installed 3.1.7 gmond on the 10 clients. > Everything works as planned with the web frontend displaying all the > expected results. However, I like to be able to bring in > /var/lib/ganglia/rrds data resides on 3.0.2 Server A onto the 3.1.7 Server > B. I tried copying the cluster directory under Server A’s > /var/lib/ganglia/rrds/xyz onto Server B thinking that the web front end will > recognize the new directory and display the data. I suppose it’s not that > simple since the Server B’s xyz cluster does not show up on the webpage. I > also tried adding “data_source “xyz” localhost” in gmetad.conf but it didn’t > do anything. > > > > Has anyone done this before and can suggest a solution? I’m guessing there > are other config files I need to modify? Or perhaps there is a migration > procedure? Or it’s just not compatible between the 3.0.2 and 3.1.7 releases > to make this happen? > > > > Thanks in advance. > > > > Steve > > > > Stephen Chu > > AT&T Labs CSO > > Middletown, NJ > > ------------------------------------------------------------------------------ > Sell apps to millions through the Intel(R) Atom(Tm) Developer Program > Be part of this innovative community and reach millions of netbook users > worldwide. Take advantage of special opportunities to increase revenue and > speed time-to-market. Join now, and jumpstart your future. > http://p.sf.net/sfu/intel-atom-d2d > _______________________________________________ > Ganglia-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ganglia-general > > ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
