ZanDAhaR <user-42a3456c44ef@xymon.invalid> 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.
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
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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