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Re: Cluster help!!



Dear Stephen,

Thanks a lot. I really appreciate your support.

So According to your mail I will try to setup high availability setup (with
drbd);

I am following these steps;

* Install ricci and luci (luci only on master system)
* Install cman ( On both systems)
*Install rgmanager(on both systems)
* install drbd( on both systems)
* Create cluster ( Without shared storage option as mirroring will be done
by drbd)
* configure FTP on both systems

Please correct me if I am wrong.

Regards,
Raj




On Tue, Aug 3, 2010 at 4:11 PM, Stephen Gilbert <linuxelf gmail com> wrote:

> I just recently built a RedHat 5.5 cluster.  At a minimum, I think you
> need to install cman and rgmanager.  They're found on the last ISO from
> RedHat.  What type of cluster do you need?  Do you need the cluster for
> high availability, or to increase throughput (or both)?  If you are
> looking for high availability, then drbd will work.  I say that because
> with drbd, you can only mount the partition on one server at a time, so
> in a high availability cluster using drbd, the node currently in charge
> would mount the partition, and the standby node would be mirroring all
> data realtime.  If the main node fails, the secondary would then take
> over and mount the partition.  If you have need of having both nodes
> online simultaneously, you'll either need some shared storage, or you'll
> need to do something externally to keep the partitions in sync.  A few
> rsync commands run on a cron would do it, but of course the data
> wouldn't be replicated in real time.
>
> raj sourabh wrote:
> > Dear Stephen,
> >
> > Thanks a lot for your reply.
> >
> > My requirement is:  I want to create FTP server on two redhat systems
> > running on cluster mode. Data should be replicated on both servers.
> >
> > My status is:  1. Ricci installed on both servers
> >                      2. Luci installed on master system
> >                      3. When I try to create a cluster the process does
> not
> > finish successfully / process goes on forever
> >                      4. I can see the storage of both the systems (i.e.
> > Network part is through)
> >
> > I have not installed anything other than ricci and luci.
> >
> > Please suggest.
> >
> > Thanks in advance.
> >
> > Regards
> > Raj
> >
> > On Tue, Aug 3, 2010 at 3:06 PM, Stephen Gilbert <linuxelf gmail com>
> wrote:
> >
> >
> >> Luci and ricci are used to manage the cluster.  The actual cluster
> >> software is cman and rgmanager.  Are you looking to cluster for high
> >> availability or high throughput?  If you just need availability, so
> >> you'll never need users to be using both nodes at the same time, then
> >> I'd recommend drbd to keep the two in sync.
> >>
> >> raj sourabh wrote:
> >>
> >>> Dear All,
> >>>
> >>> I need your help on following;
> >>>
> >>> Scenario: Two RHEL 5.5 servers connected by Cisco switch. IP's are
> >>> configured on same subnet.
> >>>
> >>> Purpose: I need to set up ftp server using redhat clustered storage.
> >>>
> >> (Files
> >>
> >>> should be reflected on both servers).. Note there is no external
> storage
> >>> device!! I need to put the file on server hard disks only when in
> >>> production..
> >>>
> >>> Queries: 1. Can I configure cluster using above equipments??
> >>> 2. I have installed ricci and luci on one server. and another server
> >>> contains ricci only. When I try to create cluster the process goes on
> >>> forever. I cant see any error.
> >>> 3. No cluster.conf file is generated..
> >>> 4. I have not installed anything other then ricci and luci on the
> server.
> >>>
> >> Do
> >>
> >>> i need to install<
> >>>
> >>
> http://www.linuxforums.org/forum/redhat-fedora-linux-help/167609-redhat-cluster-help.html#
> >>
> >>> redhat-cluster-software
> >>> also?? In one of the forum I read that If i install
> >>> luci thats enough.
> >>>
> >>> Please suggest. I have gone through some
> >>> documents<
> >>>
> >>
> http://www.linuxforums.org/forum/redhat-fedora-linux-help/167609-redhat-cluster-help.html#
> >>
> >>> also.
> >>> But confused.
> >>>
> >>> What is the exact procedure for redhat clustering for common storage.?
> >>>
> >>> Regards,
> >>> raj
> >>>
> >>>
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> >>
> >>
>
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