linux-cluster@redhat.com

Hi . I agree with you !! About giving the admin to adopt or not the paranoid approach of not failing over the services. I supported in the past tru64 clusters & now days the HP serviceguard.( hpux & linux ). Hp decided not develops the serviceguard on linux anymore & we now start using Redhat-

Re: [Linux-cluster] Quorum

Greetings, On Sat, Mar 6, 2010 at 4:45 AM, mogruith wrote: > Hi all > > > I have a special vlan dedicated for a heartbeat link between my two > nodes. This vlan should have multicast enabled. Some switches require deliberate configurations as it may not come as default. My 2p worth... Regards

Re: [Linux-cluster] Quorum

Hi all Hi Brem and thanks for your answer. When I moved manually my service, it work then I thought my quorum was used. But it seems not in fact. Even if the case "has quorate" was checked in system-config-cluster. I have a special vlan dedicated for a heartbeat link between my two nodes. In f

Re: [Linux-cluster] Quorum

On Fri, 2010-03-05 at 21:18 +0100, mogruith wrote: > Hi all > > Today, my cluster crashed, then I have several questions to ask . > > > - First of all, is there a kind of "heartbeat" on a quorum disk ? If > yes, it means, I have two heartbeat on my cluster, one by the quorum, > second one by a n

[Linux-cluster] Quorum

Hi all Today, my cluster crashed, then I have several questions to ask . - First of all, is there a kind of "heartbeat" on a quorum disk ? If yes, it means, I have two heartbeat on my cluster, one by the quorum, second one by a network link. Is it right ? - How to set the heartbeat link in my c

linux-cluster@redhat.com

Corey, Hi Corey I was talking about a watchdog not a kernel panic (sysreq...), on common (X86) hardware, most server vendors implement embedded hardware chips that could be used. Indeed, SCSI3 reservation/registration could be combined to this whole stuff to be sure about the nodes sanity. I th

Re: [Linux-cluster] strange cluster behavior

Hello Jerome, Hope you're well. I didn't as things seem to work correctly with qdisk enabled. There is a chance the guys from support will tell me to re enable qdisk .;-) I was hopping Lon or Chrissie to point me to some idea. Brem 2010/3/3 Jerome Fenal : > Le mercredi 03 mars 2010 à 14:2

Re: [Linux-cluster] Shared storage across clustered VMs?

On Fri, Mar 5, 2010 at 2:07 PM, Jeff Karpinski wrote: > A good solution for security is to define the clustered NFS service on a > "private" non-routed network and give the VMs a new interface in that > network. Then the NFS won't even be visible outside the cluster. Also keeps > that traffic o

Re: [Linux-cluster] Shared storage across clustered VMs?

On Fri, Mar 5, 2010 at 1:02 PM, Brett Cave wrote: > >> > heya rudi, never realised u were on this list too ;) > > the exports are controlled by source IP address in /etc/exports. The data > on there is not sensitive data at all in our environment, and GFS is all > server environment, with no user

Re: [Linux-cluster] Shared storage across clustered VMs?

Hi, How nss ldap traffic is doing when the locking time out (default 30 seconds) in /proc/cluster/config/dlm/lock-timeout, when authentication happens from a user/group local to one of the nodes which gets it's KVM locked ? Thanks, --Ahmed On Mar 5, 2010, at 5:02, Brett Cave wrote:

Re: [Linux-cluster] Failover not happening when SAN connectivity failed

Hi, What is the multipathing solution between the SAN and the Cluster ? Regards, --Ahmed On Mar 5, 2010, at 6:02, Maciej Bogucki wrote: Kukkala Prasad pisze: Hi All, We have a cluster setup with Redhat Cluster Suite on RHEL5 OS. SAN is one of the resource configured in the cluster. W

Re: [Linux-cluster] Shared storage across clustered VMs?

On Mar 5, 2010, at 4:02 AM, Brett Cave wrote: > > On Fri, Mar 5, 2010 at 12:42 PM, Rudi Ahlers wrote: > > > What kind of security do you apply, both to the NFS cluster, and the data > that get accessed on it? > > heya rudi, never realised u were on this list too ;) > > the exports are cont

Re: [Linux-cluster] Failover not happening when SAN connectivity failed

Kukkala Prasad pisze: Hi All, We have a cluster setup with Redhat Cluster Suite on RHEL5 OS. SAN is one of the resource configured in the cluster. We observed that if the SAN connectivity is lost on a given node then resources are not getting failovered to second node. How to resolve th

[Linux-cluster] Split brain when I kill aisexec (qdisk, fence_scsi)

Hello, I have two node cluster with qdisk and rgmanager. When I kill aisexec on the node1 (where the service BROKER is running) I get split brain situation. The service BROKER is runing on both nodes. When I upgraded rgmanager to the version from RH 5.5 BETA (rgmanager-2.0.52-3.el5) the split

Re: [Linux-cluster] Shared storage across clustered VMs?

On Fri, Mar 5, 2010 at 12:42 PM, Rudi Ahlers wrote: > > > On 2010/03/05 11:59 AM, Brett Cave wrote: > > > > On Thu, Mar 4, 2010 at 4:23 AM, Jeff Karpinski wrote: > >> Our assigned Red Hat engineer was on-site today and pointed out the >> blindingly obvious solution. Can't believe I didn't think

Re: [Linux-cluster] Possible bug in rhel5 for nested HA-LVM resources?

On Thu, 04 Mar 2010 09:33:29 -0500 Lon Hohberger wrote: > I think it will remount TEST_TEMP. > > You can test: [snip] > -- Lon Thanks, Lon. Your answers are always quick, precise, and complete! Just to let you know the results on my test cluster. The delta gave: [r...@clutest2 cluster]# grep NEED

Re: [Linux-cluster] Shared storage across clustered VMs?

On 2010/03/05 11:59 AM, Brett Cave wrote: On Thu, Mar 4, 2010 at 4:23 AM, Jeff Karpinski > wrote: Our assigned Red Hat engineer was on-site today and pointed out the blindingly obvious solution. Can't believe I didn't think of it: Run NFS as a clustered ser

Re: [Linux-cluster] GFS2 crash

Hi, On Thu, 2010-03-04 at 08:35 -0800, Scooter Morris wrote: > On 03/04/2010 02:25 AM, Steven Whitehouse wrote: > > Hi, > > > > On Wed, 2010-03-03 at 21:23 -0800, Scooter Morris wrote: > > > >> Hi all, > >> Just had a crash on our 3 node RedHat Enterprise Linux 5.4 cluster > >> that look

Re: [Linux-cluster] YNT: GFS Tuning - it's just slow, to slow for production

Hi, On Thu, 2010-03-04 at 20:58 +0200, aydin sasmaz wrote: > Hi all, > > > > I have an question and probably some advices about gfs relating to > this performans issue. We have use DDN SA6620 system for storage. This > has 60 sas disks in it. This device capable of making 4data+2parity or > 8d

Re: [Linux-cluster] Shared storage across clustered VMs?

On Thu, Mar 4, 2010 at 4:23 AM, Jeff Karpinski wrote: > Our assigned Red Hat engineer was on-site today and pointed out the > blindingly obvious solution. Can't believe I didn't think of it: Run NFS as > a clustered service and have the VMs mount that. That way ANY system - even > outside of the