Ok thank you for the clarification! I will set up dedicated server today for
RH and see how far we get.
Re,
MB
From: DEGREMONT Aurelien [mailto:[email protected]]
Sent: Tuesday, April 22, 2014 7:02 AM
To: Matthew BETTINGER; LEIBOVICI Thomas
Cc: [email protected]
Subject: Re: [robinhood-support] [PROVENANCE INTERNET] Re: Installation
questions
Le 21/04/2014 16:34, Matthew BETTINGER a écrit :
... so that is why I installed on the MDS.
I do not see why changelogs means MDS. I think you do not know very well how
Changelogs work.
You've mounted a client on the MDS node, and this is what Robinhood is using
actually, not the MDS part.
Lustre Changelogs are always ready from a client, and cannot be read from a
simple MDT even if you really want it
Robinhood adm and daemons installed on MDS
Lustre filesystem mount is mounted on to the MDS itself /mnt/client/lustre
That's what makes all of this working.
MDS robinhood daemons send changelog updates to the mysql server IPoIB.
Watchout for your SQL traffic and be sure this is not a bottleneck.
If we have to run reports they would be executed from the mds (rbh-report etc)
, scary.
No reason to be scary, you do not have too run this on MDS as RBH only needs a
client.
It is now my understanding that we can put everything on one dedicated server
as long as it is connected to the IB fabric? We can get change logs from the
client ?
Not "you can", but "you must".
Aurélien
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