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
--
Regards,
Varun Galande
+971505589029
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@xxxxxxxxxx> 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@xxxxxxxxxx>
Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
storage issue
To: linux clustering <linux-cluster@xxxxxxxxxx>
Message-ID: <1224777717.32460.92.camel@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@xxxxxxxxx>
Subject: Re: [Linux-cluster] Two nodes cluster issue without shared
storage issue
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<58aa8d780810230942s421d74dfqaf61190be764b57@xxxxxxxxxxxxxx>
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@xxxxxxxxxx> 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@xxxxxxxxxx
> 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@xxxxxxx>
Subject: RE: [Linux-cluster] Two nodes cluster issue without shared
storageissue
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<174CED94DD8DC54AB888B56E103B118742183A@xxxxxxxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="gb2312"
>-----Original Message-----
>From: linux-cluster-bounces@xxxxxxxxxx
>[mailto:linux-cluster-bounces@xxxxxxxxxx] 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@xxxxxxx>
Subject: RE: [Linux-cluster] Two nodes cluster issue without shared
storageissue
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<174CED94DD8DC54AB888B56E103B118742183D@xxxxxxxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="gb2312"
>
> From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] 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@xxxxxxxxx>
Subject: Re: [Linux-cluster] Cluster/GFS issue.
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<8786b91c0810240011u71e91161ia374c591d5f3cadb@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Greetings,
2008/10/23 Allgood, John <jallgood@xxxxxxx>
<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@xxxxxxxxx>
Subject: Re: [Linux-cluster] Cluster/GFS issue.
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<8786b91c0810240014g7ff6ed7cw5b8fd853b9ca256c@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
>
> 2008/10/23 Allgood, John <jallgood@xxxxxxx>
> <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@xxxxxxxxxxxxx>
Subject: [Linux-cluster] cluster between 2 Xen guests where guests are
on different hosts
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<D566E8CF3538B54D95B925CB69CB4D2A16BC0485@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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@xxxxxxxxxx>
Subject: RE: [Linux-cluster] cluster between 2 Xen guests where guests
are ondifferent hosts
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<64D0546C5EBBD147B75DE133D798665F0180693B@xxxxxxxxxxxxxxxxx>
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@xxxxxxxxxx
> [mailto:linux-cluster-bounces@xxxxxxxxxx] 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@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/linux-cluster
>
>
------------------------------
Message: 9
Date: Fri, 24 Oct 2008 10:13:07 -0400
From: Chris Edwards <cedwards@xxxxxxxxxxxxxxxx>
Subject: [Linux-cluster] Cluster and LVG/LV
To: linux clustering <linux-cluster@xxxxxxxxxx>
Message-ID:
<61252CC53A97634BA52256DCF2344FBC66C68DE2FF@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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@xxxxxxxxxx>
Subject: RE: [Linux-cluster] Two nodes cluster issue without
sharedstorageissue
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<64D0546C5EBBD147B75DE133D798665F0180693C@xxxxxxxxxxxxxxxxx>
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@xxxxxxxxxx
> [mailto:linux-cluster-bounces@xxxxxxxxxx] 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@xxxxxxxxxx
> >[mailto:linux-cluster-bounces@xxxxxxxxxx] 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@xxxxxxxxxx
> https://www.redhat.com/mailman/listinfo/linux-cluster
>
>
------------------------------
Message: 11
Date: Fri, 24 Oct 2008 10:20:04 -0400
From: "Jeff Sturm" <jeff.sturm@xxxxxxxxxx>
Subject: RE: [Linux-cluster] Cluster and LVG/LV
To: "linux clustering" <linux-cluster@xxxxxxxxxx>
Message-ID:
<64D0546C5EBBD147B75DE133D798665F0180693D@xxxxxxxxxxxxxxxxx>
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@xxxxxxxxxx
[mailto:linux-cluster-bounces@xxxxxxxxxx] 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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End of Linux-cluster Digest, Vol 54, Issue 31
*********************************************
--
Regards,
Varun Galande
+971505589029
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