[hobbit] Moving to new Hobbit server

[ZanDAhaR]

Andy France wrote:
>
> ZanDAhaR <allan at zandahar.net> wrote on 01/03/2006 03:52:41 p.m.:
>
> > David Pullman wrote:
> > > I also had to do the export/import of rrd files when moving from 
> RHEL4
> > > on an i686 to RHEL 4 on a x86_64 processor type.
> > >
> > > --David
> > >
> > > Andy France wrote:
> > >>
> > >> ZanDAhaR wrote on 28/02/2006 06:56:12 p.m.:
> > >>
> > >>  > Hey guys,
> > >>  >
> > >>  > Can't seem to find anything on this but then again I haven't gone
> > >>  > through all the results that come up on the mailing list search
> > >> either.
> > >>  >
> > >>  > We moved from BB server to a Hobbit server a while ago but it was
> > >> on the
> > >>  > same box so there was no issue there. We are shuffling some old
> > >> hardware
> > >>  > around and decided to give our hobbit server some more grunt 
> and also
> > >>  > add some other odd apps on it. We'll want to progrssively move 
> the
> > >> hosts
> > >>  > over to the new server so the clients are cool, just update 
> the ip in
> > >>  > windows ones, and the ip and hostname in the nix ones
> > >>  >
> > >>  > As for the server I'm assuming I can just copy the data dir over
> > >> for the
> > >>  > host I'm moving. I cannot imagine there being anything server
> > >> specific
> > >>  > in any of the status messages or graphs ?
> > >>
> > >> Watch out if you are changing OS/filesystem at all.  Existing RRD
> > >> files will need to be exported and imported rather copied if this is
> > >> the case (I had to do this for a small-ish migration from Solaris 
> x86
> > >> to Solaris Sparc).
> > >>
> > >>  > So action plan would be, shut down client on XYZ, define it in
> > >> bb-hosts
> > >>  > file on NEWHOBBIT, has it out in the OLDHOBBIT bb-hosts file, copy
> > >>  > appropriate data folders from OLDHOBBIT to NEWHOBBIT (update
> > >> ownership
> > >>  > if need be), update ip addy and hostname in XYZ client settings,
> > >> start
> > >>  > client XYZ, be happy :)
> > >>  >
> > >>  > Any flaws in this thinking or suggestions of easier way even 
> though I
> > >>  > cannot imagine one can you please let me know
> > >>  >
> > >>  > Thanks
> > >>  >
> > >>  > Allan
> > >>  >
> > >>
> > >> Andy.
> > >>
> > >>
> > >
> > > To unsubscribe from the hobbit list, send an e-mail to
> > > hobbit-unsubscribe at hswn.dk
> > >
> > Hmm ok I hadnt thought about that as I don't understand the inner
> > workings of RRD etc. We're moving from a Pentium Pro 200 box on Redhat
> > 7.2 to a Dual Athlon MP System on Redhat 9 (why RH9 you ask, its the
> > ONLY supported OS for another application thats going on there and 
> if we
> > hit any problems if its not RH9 they will not help us, poverty I know)
> >
> > If I do a uname -m they both say i686, uname -p one says unknown other
> > says athlon. Should this be an issue ? Also if they are different 
> enough
> > will the graphs just not work or be corrupted or not update ? Can
> > someone please assist me in how to import/export the rrd files then 
> as I
> > have never done that before. Been looking in the rrd docs but still not
> > entirely sure what I need/want.
> >
> > The proxy idea sounds good although I don't know if its going to be
> > warranted in this case as we don't have a huge number of hosts to 
> deal with.
> >
> > Thanks for the feedback guys
> >
> > Allan
> >
> > To unsubscribe from the hobbit list, send an e-mail to
> > hobbit-unsubscribe at hswn.dk
> >
> >
>
> As the systems are both Linux, are same-endian (i686). and same FS 
> (ext3?), I can only surmise that you should be able to just copy the 
> RRD files.
>
> If they are not compatible then the updates will fail as rrdtool will 
> not be able to read the existing format.
>
> As far as actually converting them goes, I kind of did it on the fly 
> so don't have any useful scripts to pass on :-)  It's pretty easy and 
> the RRDTOOL website does provide examples 
> (http://rrdtool.trexle.net/doc/rrddump.en.html)
>
> HTH,
> Andy.
>
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Ok cool so basically the graphs stop updating if theyre NQR after the 
move, I guess thats pretty effortless to test, move a host onto the new 
box and come back in a day and see what happens I suppose.

As for the import/export I did the the convert to xml bit but I wasnt 
sure if thats what I was supposed to be looking at.

Wicked thanks for the input guys, has certainly cleared some things up, 
confirmed some things, and alerted me to things I probably never would 
have thought of and then gone 'uhhh wont doesnt this thing work'

THanks all

Allan
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