[hobbit] Migrate hobbit data

[Kauffman, Tom]

Trust me; you also run into this problem moving from X86 Linux to X86_64 Linux.

Tom

________________________________
From: Everett, Vernon [mailto:Vernon.Everett at woodside.com.au]
Sent: Tuesday, August 05, 2008 9:09 AM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Migrate hobbit data

You are a glutton for punishment, aren't you?

You have to use rrdtool and export the data from every .rrd file into an XML file.
Then copy the XML dumps over to the new server, and import them back into .rrd files of the same name.

The issue has to do with Solaris/Sparc being big-endian and Linux/Intel is little-endian, and how the data is stored on different architecture.
Read more here http://en.wikipedia.org/wiki/Big-endian (If I try and explain, I will probably stuff it up. It's late here)

You can read more about the migration here.
http://osdir.com/ml/network.smokeping.user/2003-06/msg00019.html
You can script it to make it easier, but your migration will take a LOT longer.

Cheers
     V


________________________________
From: Roberts, James [mailto:James.Roberts at hants.gov.uk]
Sent: Tuesday, 5 August 2008 8:54 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Migrate hobbit data
ok sledgehammer at the ready....what's the work around?


________________________________
From: Everett, Vernon [mailto:Vernon.Everett at woodside.com.au]
Sent: 05 August 2008 13:36
To: hobbit at hswn.dk
Subject: RE: [hobbit] Migrate hobbit data
Yes, but with a caveat.
If you change architecture, your rrd files might not survive.
If you go like for like e.g. x86 to x86, you should be fine.
However, you will have problems if you migrate from X86 to Sparc, or vice-versa.
There is a workaround, but I would rather have my head set on fire, and put out with a sledghammer.

If you are going to the same OS, and the same hardware, then it's full steam ahead, and f*** the icebergs.
Make sure your new server has all the prerequisites for Hobbit installed.
Install Hobbit. Check it starts, then shut it down.
Now simply shut down the old Hobbit installation, copy the data and config files, and start up the new one.

Your data will include ~/server/etc
And /wherever/you/put/hobbit/data
Don't forget any custom scripts in ~server/ext

Make sure the clients are pointing to the new server.
The easiest way is to change the IP address of the new server to look like the old.
Failing that, change DNS or host lookup to point ot the new server.

You should then be back in business.




________________________________
From: T.J. Yang [mailto:tj_yang at hotmail.com]
Sent: Tuesday, 5 August 2008 7:15 PM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Migrate hobbit data
a very good entry for FAQ or HOWTO if it is not already in hobbitmon wiki site.
http://en.wikibooks.org/wiki/System_Monitoring_with_Hobbit/Other_Docs


tj

From: Roberts, James<mailto:James.Roberts at hants.gov.uk>
Sent: Tuesday, August 05, 2008 6:00 AM
To: hobbit at hswn.dk<mailto:hobbit at hswn.dk>
Subject: [hobbit] Migrate hobbit data


I am planning to move my hobbit server install to a new server...

If it possible to migrate all the data from the old install to the new one?


James Roberts
IT Consultant - IT Services
Hampshire County Council
Room 415,Elizabeth II Court, The Castle,
Winchester, Hants SO23 8US
Internal HPSN: (200) 5037
Tel: +44 (0)1962 845037
Fax: +44 (0)1962 847434
james.roberts at hants.gov.uk
Web: WWW.Hants.Gov.UK<file:///\\WWW.Hants.Gov.UK>

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