[Ocfs2-users] Cluster setup
Sunil Mushran
Sunil.Mushran at oracle.com
Tue Oct 9 11:52:58 PDT 2007
That won't handle the nfs server death case. What he wants
is for the client to transparently mount the volume from another
nfs server.
AJ Weber wrote:
> Is it possible to augment with something straightforward and simple
> like Pen or Balance?
>
> (I forget if those are HTTP-specific.)
>
> Also, if you want to do rudimentary load balancing (maybe a half-step
> better than the manually load balanced config, below), you can add all
> three servers' IP Addresses to the DNS under one name, and the DNS
> server(s) _should_ randomly choose an entry to return. That might
> work, since NFS is session-based (AFAIK), and should stay with the
> same server after session initiation.
>
> My $0.02, please adjust for inflation. ;)
>
> -AJ
>
>
> ----- Original Message -----
> *From:* Brian Anderson <mailto:banderson at athenahealth.com>
> *To:* ocfs2-users at oss.oracle.com <mailto:ocfs2-users at oss.oracle.com>
> *Sent:* Tuesday, October 09, 2007 2:35 PM
> *Subject:* RE: [Ocfs2-users] Cluster setup
>
>
> Not exactly. I'm in a similar boat right now. I have 3 NFS servers all
> mounting an OCFS2 volume. Each NFS server has its own IP, and the
> clients load balance manually... some mount fs1, others fs2, and the
> rest fs3. In an ideal world, I'd have the NFS cluster presenting a
> single IP, and failing over / load balancing some other way.
>
> I'm looking at NFS v4 as one potential avenue (no single IP, but
> it does
> let you fail over from 1 server to the next in line), and commercial
> products such as IBRIX.
>
>
>
>
> Brian
>
> > -----Original Message-----
> > From: ocfs2-users-bounces at oss.oracle.com
> <mailto:ocfs2-users-bounces at oss.oracle.com>
> > [mailto:ocfs2-users-bounces at oss.oracle.com] On Behalf Of Sunil
> Mushran
> > Sent: Tuesday, October 09, 2007 2:27 PM
> > To: Luis Freitas
> > Cc: ocfs2-users at oss.oracle.com <mailto:ocfs2-users at oss.oracle.com>
> > Subject: Re: [Ocfs2-users] Cluster setup
> >
> > Unsure what you mean. If the two servers mount the same
> > ocfs2 volume and export them via nfs, isn't that clustered nfs?
> >
> > Luis Freitas wrote:
> > >
> > > Is there any cluster NFS solution out there? (Two NFS
> > servers sharing
> > > the same filesystem with distributed locking and failover
> > capability)
> > >
> > > Regards,
> > > Luis
> > >
> > > */Sunil Mushran <Sunil.Mushran at oracle.com>/
> <mailto:Sunil.Mushran at oracle.com%3E/>* wrote:
> > >
> > > Appears what you are looking for is a mix of ocfs2 and nfs.
> > > The storage servers mount the shared disks and the reexport
> > > them via nfs to the remaining servers.
> > >
> > > ubuntu 6.06 is too old. If you are stuck on Ubuntu LTS, the
> > > next version 7.10 should have all you want.
> > >
> > > Pavel Georgiev wrote:
> > > > Hi List,
> > > >
> > > > I`m trying to build a cluster storage with commodity
> > hardware in
> > > a way that
> > > > the all the data would be on > 1 server. It should
> > have the meet
> > > the
> > > > following requirements:
> > > > 1) If one of the servers goes down, the cluster
> > should continue
> > > to work with
> > > > rw access from all clients.
> > > > 2) Clients that mount the storage should not be part
> > of cluster
> > > (not export
> > > > any disk storage) - I have few servers with huge disks
> that I
> > > want to store
> > > > data on (currently 2 servers, maybe more in the future)
> and I
> > > want to
> > > > storethe data only on them, the rest of the server
> should just
> > > mount and use
> > > > that storage with the ability to continue operation if
> one of
> > > the two storage
> > > > servers goes down.
> > > > 3) More servers should be able to join the cluster
> > and at given
> > > point,
> > > > expanding the total size of the cluster, hopefully without
> > > rebuilding the
> > > > storage.
> > > > 4) Load balance is not a issue - all the load can go to
> one of
> > > the two storage
> > > > servers (although its better to be balanced), the main
> goal is
> > > to have
> > > > redundant storage
> > > >
> > > > Does ocfs2 meet these requirements? I read few howtos
> but none
> > > of them
> > > > mentioned my second requirement (only some of the servers to
> > > hold the data).
> > > >
> > > > Are there any specific steps to do to accomplish (2) and
> (3)?
> > > >
> > > > I`m using Ubuntu 6.06 on x86.
> > > >
> > > > Thanks!
> > > >
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