[Linux-cluster] RE:Two nodes cluster issue without shared storage issue
varun
v.galande at gmail.com
Fri Oct 24 14:50:46 UTC 2008
Hi Lon
I think you should try Linux Virtual Server ( LVS ) here this will
definitely help you.
You can see the details over here .
www.linuxvirtualserver.org
Br,Varun
On Fri, Oct 24, 2008 at 6:20 PM, <linux-cluster-request at redhat.com> wrote:
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> Today's Topics:
>
> 1. Re: Two nodes cluster issue without shared storage issue
> (Lon Hohberger)
> 2. Re: Two nodes cluster issue without shared storage issue
> (Flavio Junior)
> 3. RE: Two nodes cluster issue without shared storageissue
> (Chen, Mockey (NSN - CN/Cheng Du))
> 4. RE: Two nodes cluster issue without shared storageissue
> (Chen, Mockey (NSN - CN/Cheng Du))
> 5. Re: Cluster/GFS issue. (Rajagopal Swaminathan)
> 6. Re: Cluster/GFS issue. (Rajagopal Swaminathan)
> 7. cluster between 2 Xen guests where guests are on different
> hosts (Panigrahi, Santosh Kumar)
> 8. RE: cluster between 2 Xen guests where guests are ondifferent
> hosts (Jeff Sturm)
> 9. Cluster and LVG/LV (Chris Edwards)
> 10. RE: Two nodes cluster issue without sharedstorageissue
> (Jeff Sturm)
> 11. RE: Cluster and LVG/LV (Jeff Sturm)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 23 Oct 2008 12:01:57 -0400
> From: Lon Hohberger <lhh at redhat.com>
> Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
> storage issue
> To: linux clustering <linux-cluster at redhat.com>
> Message-ID: <1224777717.32460.92.camel at ayanami>
> Content-Type: text/plain
>
> On Thu, 2008-10-16 at 17:10 +0800, Chen, Mockey (NSN - CN/Cheng Du)
> wrote:
> > Hi,
> >
> > I want to set up a two node cluster, I use active/standby mode to run
> > my service. I need even one node's hardware failure such as power cut,
> > another node still can handover from failure node and the provide the
> > service.
> >
> > In my environment, I have no shared storage, so I can not use quorum
> > disk. Is there any other way to implement it? I searched and found
> > 'tiebreaker IP' may feed my request, but I can not found any hints on
> > how to configure it ?
>
> Since you have no shared data, you may be able to run without fencing.
>
> That should be pretty straightforward, but you might need to comment out
> the "fenced" startup from the cman init script.
>
> In this case, the worst that will happen is both nodes will end up
> running the service at the same time in the event of a network
> partition.
>
> The other down side is that if the cluster divides into two partitions
> and later merges back into one partition, I don't think certain things
> will work right; you will need to detect this event and reboot one of
> the nodes.
>
> -- Lon
>
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 23 Oct 2008 14:42:40 -0200
> From: "Flavio Junior" <billpp at gmail.com>
> Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
> storage issue
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <58aa8d780810230942s421d74dfqaf61190be764b57 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Well.. If you are using an active/standby scenario, without a shared
> storage, probably you can make use of CARP/UCARP
>
> http://en.wikipedia.org/wiki/Common_Address_Redundancy_Protocol
> http://www.ucarp.org/project/ucarp
>
>
> --
>
> Flávio do Carmo Júnior aka waKKu
>
>
> On Thu, Oct 23, 2008 at 2:01 PM, Lon Hohberger <lhh at redhat.com> wrote:
>
> > On Thu, 2008-10-16 at 17:10 +0800, Chen, Mockey (NSN - CN/Cheng Du)
> > wrote:
> > > Hi,
> > >
> > > I want to set up a two node cluster, I use active/standby mode to run
> > > my service. I need even one node's hardware failure such as power cut,
> > > another node still can handover from failure node and the provide the
> > > service.
> > >
> > > In my environment, I have no shared storage, so I can not use quorum
> > > disk. Is there any other way to implement it? I searched and found
> > > 'tiebreaker IP' may feed my request, but I can not found any hints on
> > > how to configure it ?
> >
> > Since you have no shared data, you may be able to run without fencing.
> >
> > That should be pretty straightforward, but you might need to comment out
> > the "fenced" startup from the cman init script.
> >
> > In this case, the worst that will happen is both nodes will end up
> > running the service at the same time in the event of a network
> > partition.
> >
> > The other down side is that if the cluster divides into two partitions
> > and later merges back into one partition, I don't think certain things
> > will work right; you will need to detect this event and reboot one of
> > the nodes.
> >
> > -- Lon
> >
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
> >
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> ------------------------------
>
> Message: 3
> Date: Fri, 24 Oct 2008 10:35:48 +0800
> From: "Chen, Mockey (NSN - CN/Cheng Du)" <mockey.chen at nsn.com>
> Subject: RE: [Linux-cluster] Two nodes cluster issue without shared
> storageissue
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <174CED94DD8DC54AB888B56E103B118742183A at CNBEEXC007.nsn-intra.net>
> Content-Type: text/plain; charset="gb2312"
>
>
>
> >-----Original Message-----
> >From: linux-cluster-bounces at redhat.com
> >[mailto:linux-cluster-bounces at redhat.com] On Behalf Of ext Lon
> >Hohberger
> >Sent: 2008Äê10ÔÂ24ÈÕ 0:02
> >To: linux clustering
> >Subject: Re: [Linux-cluster] Two nodes cluster issue without
> >shared storageissue
> >
> >On Thu, 2008-10-16 at 17:10 +0800, Chen, Mockey (NSN - CN/Cheng Du)
> >wrote:
> >> Hi,
> >>
> >> I want to set up a two node cluster, I use active/standby
> >mode to run
> >> my service. I need even one node's hardware failure such as
> >power cut,
> >> another node still can handover from failure node and the
> >provide the
> >> service.
> >>
> >> In my environment, I have no shared storage, so I can not use quorum
> >> disk. Is there any other way to implement it? I searched and found
> >> 'tiebreaker IP' may feed my request, but I can not found any
> >hints on
> >> how to configure it ?
> >
> >Since you have no shared data, you may be able to run without fencing.
> >
> >That should be pretty straightforward, but you might need to
> >comment out the "fenced" startup from the cman init script.
> >
> >In this case, the worst that will happen is both nodes will
> >end up running the service at the same time in the event of a
> >network partition.
> >
> >The other down side is that if the cluster divides into two
> >partitions and later merges back into one partition, I don't
> >think certain things will work right; you will need to detect
> >this event and reboot one of the nodes.
> >
> >-- Lon
>
> I know such defects in two node cluster.
> Since our service is mission critical, I want to know how to avoid such
> failure case ?
>
> Thanks.
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 24 Oct 2008 10:41:11 +0800
> From: "Chen, Mockey (NSN - CN/Cheng Du)" <mockey.chen at nsn.com>
> Subject: RE: [Linux-cluster] Two nodes cluster issue without shared
> storageissue
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <174CED94DD8DC54AB888B56E103B118742183D at CNBEEXC007.nsn-intra.net>
> Content-Type: text/plain; charset="gb2312"
>
> >
> > From: linux-cluster-bounces at redhat.com [mailto:
> linux-cluster-bounces at redhat.com] On Behalf Of ext Flavio Junior
> > Sent: 2008Äê10ÔÂ24ÈÕ 0:43
> > To: linux clustering
> > Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
> storageissue
> >
> >
> > Well.. If you are using an active/standby scenario, without a
> shared storage, probably you can make use of CARP/UCARP
> >
> > http://en.wikipedia.org/wiki/Common_Address_Redundancy_Protocol
> > http://www.ucarp.org/project/ucarp
> >
>
> I think CARP will fullfill my current request, but we have choose RHCS as
> our cluster suite. It is very difficult to change it.
> Anyhow, Thanks for your suggestion.
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 24 Oct 2008 12:41:33 +0530
> From: "Rajagopal Swaminathan" <raju.rajsand at gmail.com>
> Subject: Re: [Linux-cluster] Cluster/GFS issue.
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <8786b91c0810240011u71e91161ia374c591d5f3cadb at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Greetings,
>
> 2008/10/23 Allgood, John <jallgood at ohl.com>
> <snip>
>
> > Here is the problem that we are having. We can't on an consistent basic
> > get the GFS filesystem mounted. On
> >
> <snip>
>
> Just a hunch... Cant say if it will help...
>
> Have you tried putting the mount command in rc.local instead of /etc/fstab?
>
> Regards,
>
> Rajagopal
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>
> ------------------------------
>
> Message: 6
> Date: Fri, 24 Oct 2008 12:44:16 +0530
> From: "Rajagopal Swaminathan" <raju.rajsand at gmail.com>
> Subject: Re: [Linux-cluster] Cluster/GFS issue.
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <8786b91c0810240014g7ff6ed7cw5b8fd853b9ca256c at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> >
> > 2008/10/23 Allgood, John <jallgood at ohl.com>
> > <snip>
> >
> >> Here is the problem that we are having. We can't on an consistent basic
> >> get the GFS filesystem mounted. On
> >>
> > <snip>
> >
> > Just a hunch... Cant say if it will help...
> >
> > Have you tried putting the mount command in rc.local instead of
> /etc/fstab?
> >
> start clvmd too in rc.local. of course before mounting and use the commands
> in chain using &&
>
> >
> > Regards,
> >
> > Rajagopal
> >
> >
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> ------------------------------
>
> Message: 7
> Date: Fri, 24 Oct 2008 17:29:05 +0530
> From: "Panigrahi, Santosh Kumar" <Santosh.Panigrahi at in.unisys.com>
> Subject: [Linux-cluster] cluster between 2 Xen guests where guests are
> on different hosts
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <
> D566E8CF3538B54D95B925CB69CB4D2A16BC0485 at inblr-exch1.eu.uis.unisys.com>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello,
>
> I am using RHEL5.2+RHCS and configured a 2 node cluster in XEN virtual
> environment for testing purpose only. These 2 cluster nodes are 2
> virtual guests (p6pv1, p7pv1) and each virtual guest is on different
> hosts/ Dom-0s (p6 & p7). I have already gone through the older questions
> on this forum with similar problems and also the wiki page
> (http://sources.redhat.com/cluster/wiki/VMClusterCookbook ).
> But still I have confused a bit regarding the Xen fencing in this
> scenarios.
> I don't want to do any live migration here and only to do a
> failover/failback services between 2 cluster nodes. I want to know
> whether I have to configure fencing only between the 2 guests (using
> fence_xvm) or also between the 2 hosts (using fence_xvmd) as well, where
> as my cluster nodes are 2 Xen guests.
>
> I am configuring the cluster using luci and there options are as
> follows.
>
> Fence Daemon Properties:
> Post Fail Delay - 0
> Post Join Delay - 3
> Run XVM fence daemon - tick mark selected
>
> XVM fence daemon key distribution:
> Enter a node hostname from the host cluster - ?
> Enter a node hostname from the hosted (virtual) cluster _ ?
>
> Can someone please help me in this regard?
>
> Regards,
> Santosh
>
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 24 Oct 2008 10:09:57 -0400
> From: "Jeff Sturm" <jeff.sturm at eprize.com>
> Subject: RE: [Linux-cluster] cluster between 2 Xen guests where guests
> are ondifferent hosts
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <64D0546C5EBBD147B75DE133D798665F0180693B at hugo.eprize.local>
> Content-Type: text/plain; charset="us-ascii"
>
> Santosh,
>
> The hosts are responsible for fencing the guests, so, as far as I know
> it is not possible to use fence_xvm without also configuring fence_xvmd.
>
> In our configuration we run an "inner" cluster amongst the DomU guests,
> and an "outer" cluster amongst the Dom0 hosts. The outer cluster starts
> fence_xvmd whenever cman starts. The fence_xvmd daemon listens for
> multicast traffic from fence_xvm. We have a dedicated VLAN for this
> traffic in our configuration. (Make sure your routing tables are
> adjusted for this, if needed--whereas aisexec figures out what
> interfaces to use for multicast automatically based on the bind address,
> fence_xvm does not.)
>
> If your Dom0 hosts are not part of a cluster, it may be possible to run
> fence_xvmd standalone. We have not attempted to do so, so I can't say
> whether it can work.
>
> Jeff
>
> > -----Original Message-----
> > From: linux-cluster-bounces at redhat.com
> > [mailto:linux-cluster-bounces at redhat.com] On Behalf Of
> > Panigrahi, Santosh Kumar
> > Sent: Friday, October 24, 2008 7:59 AM
> > To: linux clustering
> > Subject: [Linux-cluster] cluster between 2 Xen guests where
> > guests are ondifferent hosts
> >
> > Hello,
> >
> > I am using RHEL5.2+RHCS and configured a 2 node cluster in
> > XEN virtual environment for testing purpose only. These 2
> > cluster nodes are 2 virtual guests (p6pv1, p7pv1) and each
> > virtual guest is on different hosts/ Dom-0s (p6 & p7). I have
> > already gone through the older questions on this forum with
> > similar problems and also the wiki page
> > (http://sources.redhat.com/cluster/wiki/VMClusterCookbook ).
> > But still I have confused a bit regarding the Xen fencing in
> > this scenarios.
> > I don't want to do any live migration here and only to do a
> > failover/failback services between 2 cluster nodes. I want to
> > know whether I have to configure fencing only between the 2
> > guests (using
> > fence_xvm) or also between the 2 hosts (using fence_xvmd) as
> > well, where as my cluster nodes are 2 Xen guests.
> >
> > I am configuring the cluster using luci and there options are
> > as follows.
> >
> > Fence Daemon Properties:
> > Post Fail Delay - 0
> > Post Join Delay - 3
> > Run XVM fence daemon - tick mark selected
> >
> > XVM fence daemon key distribution:
> > Enter a node hostname from the host cluster - ?
> > Enter a node hostname from the hosted (virtual) cluster _ ?
> >
> > Can someone please help me in this regard?
> >
> > Regards,
> > Santosh
> >
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
> >
> >
>
>
>
> ------------------------------
>
> Message: 9
> Date: Fri, 24 Oct 2008 10:13:07 -0400
> From: Chris Edwards <cedwards at smartechcorp.net>
> Subject: [Linux-cluster] Cluster and LVG/LV
> To: linux clustering <linux-cluster at redhat.com>
> Message-ID:
> <
> 61252CC53A97634BA52256DCF2344FBC66C68DE2FF at OFFICEEXCHANGE.office.smartechcorp.net
> >
>
> Content-Type: text/plain; charset="us-ascii"
>
> If I am installing multiple Xen VM's in a cluster with shared iSCSI space
> with Logical Volumes for each virtual machine should I put each LV in its
> own logical volume group or should I use one logical volume group for all of
> the LV's?
>
> Thanks!
>
> ---
>
> Chris Edwards
>
>
>
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> ------------------------------
>
> Message: 10
> Date: Fri, 24 Oct 2008 10:18:08 -0400
> From: "Jeff Sturm" <jeff.sturm at eprize.com>
> Subject: RE: [Linux-cluster] Two nodes cluster issue without
> sharedstorageissue
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <64D0546C5EBBD147B75DE133D798665F0180693C at hugo.eprize.local>
> Content-Type: text/plain; charset="iso-2022-jp"
>
> For what it's worth, considerations like these have caused us to abandon
> any efforts to build a 2-node cluster.
>
> >From this point forward all our RHCS deployments will have a minimum of 3
> nodes, even if the 3rd node is a small node that provides no resources and
> only exists for arbitration purposes. (It was going to be that, or a quorum
> disk for our application, but we have no experience running a quorum disk
> over the long-haul in a production envrironment.)
>
> Hope this helps someone.
>
> > -----Original Message-----
> > From: linux-cluster-bounces at redhat.com
> > [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Chen,
> > Mockey (NSN - CN/Cheng Du)
> > Sent: Thursday, October 23, 2008 10:36 PM
> > To: linux clustering
> > Subject: RE: [Linux-cluster] Two nodes cluster issue without
> > sharedstorageissue
> >
> >
> >
> > >-----Original Message-----
> > >From: linux-cluster-bounces at redhat.com
> > >[mailto:linux-cluster-bounces at redhat.com] On Behalf Of ext Lon
> > >Hohberger
> > >Sent: 2008 $BG/ (J10 $B7n (J24 $BF| (J 0:02
> > >To: linux clustering
> > >Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
> > >storageissue
> > >
> > >On Thu, 2008-10-16 at 17:10 +0800, Chen, Mockey (NSN - CN/Cheng Du)
> > >wrote:
> > >> Hi,
> > >>
> > >> I want to set up a two node cluster, I use active/standby
> > >mode to run
> > >> my service. I need even one node's hardware failure such as
> > >power cut,
> > >> another node still can handover from failure node and the
> > >provide the
> > >> service.
> > >>
> > >> In my environment, I have no shared storage, so I can not
> > use quorum
> > >> disk. Is there any other way to implement it? I searched and found
> > >> 'tiebreaker IP' may feed my request, but I can not found any
> > >hints on
> > >> how to configure it ?
> > >
> > >Since you have no shared data, you may be able to run
> > without fencing.
> > >
> > >That should be pretty straightforward, but you might need to comment
> > >out the "fenced" startup from the cman init script.
> > >
> > >In this case, the worst that will happen is both nodes will end up
> > >running the service at the same time in the event of a network
> > >partition.
> > >
> > >The other down side is that if the cluster divides into two
> > partitions
> > >and later merges back into one partition, I don't think
> > certain things
> > >will work right; you will need to detect this event and
> > reboot one of
> > >the nodes.
> > >
> > >-- Lon
> >
> > I know such defects in two node cluster.
> > Since our service is mission critical, I want to know how to
> > avoid such failure case ?
> >
> > Thanks.
> >
> >
> >
> > --
> > Linux-cluster mailing list
> > Linux-cluster at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-cluster
> >
> >
>
>
>
> ------------------------------
>
> Message: 11
> Date: Fri, 24 Oct 2008 10:20:04 -0400
> From: "Jeff Sturm" <jeff.sturm at eprize.com>
> Subject: RE: [Linux-cluster] Cluster and LVG/LV
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> <64D0546C5EBBD147B75DE133D798665F0180693D at hugo.eprize.local>
> Content-Type: text/plain; charset="us-ascii"
>
> Chris,
>
> Are you running a clustered LVM, and do you expect to be able to use Xen
> migration?
>
> Jeff
>
>
> ________________________________
>
> From: linux-cluster-bounces at redhat.com
> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Chris Edwards
> Sent: Friday, October 24, 2008 10:13 AM
> To: linux clustering
> Subject: [Linux-cluster] Cluster and LVG/LV
>
>
>
> If I am installing multiple Xen VM's in a cluster with shared
> iSCSI space with Logical Volumes for each virtual machine should I put
> each LV in its own logical volume group or should I use one logical
> volume group for all of the LV's?
>
>
>
> Thanks!
>
>
>
> ---
>
>
>
> Chris Edwards
>
>
>
>
>
>
>
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>
> --
> Linux-cluster mailing list
> Linux-cluster at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-cluster
>
> End of Linux-cluster Digest, Vol 54, Issue 31
> *********************************************
>
--
Regards,
Varun Galande
+971505589029
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