Sun Cluster 3.1 setup

Dear All,
Sooner we will upgrade the Sun Cluster 3.1. I am now working on a testing site.
What I am trying to setup is two server with SC 3.1 and simulate the migration procedure, however we don't have SAN in the testing site, so I stuck in the quorum configuration.
I was told SC 3.1 can be setup without any SAN but local disk, however I cannot locate any document related.
Could anyone please help with any tips? How can I setup the quorum device on NFS or even just local disk?
Thanks and Regards,
Donald
Edited by: Foo Donald on 2011/7/14 上午 1:07

Hi Nik,
I have setup a Sun Cluster 3.2 Quorum Server in a third system which is listening on port 9000.
Please correct me if wrong, it seems like Sun Cluster 3.1 command scconf cannot see the quorum server, it cannot specify the IP nor port.
The testing site is on Solaris 8 + Sun Cluster 3.1, it will be upgrade to Solaris 10 + Sun Cluster 3.2 by Live Upgrade.
Thanks and Regards,
Donald

Similar Messages

Multiple Oracle databases in Sun cluster 3.2 (without RAC setup)

There are 2 Sun SPARC (Sun Fire T2000) servers with Solaris 10 (05/09) OS and Sun Cluster 3.2 software. We need two different Oracle databases & instances (Oracle 10g R2 without RAC) for an application. The first database is for Production and need to be configured in the first node & Shared storage disk and need high availability. This database should run from the second node if the first node fails. The second database is for Quality/Test and it is prefered to be running in the Second node for better load distribution. This DB doesnt require any failover.
The shared storage is Sun SE 3510 FC and multiple LUNs can be created for different databases..
Is it possible to configure two different resource groups (one for Quality and other for Production) and make the first node primary for Production RG, and the second node primary for Quality RG and thus distributing the load on 2 servers ? If possible, what special configuration required in Sun OS and Cluster side ?
Appreciate if you can give some configuration procedures/documents for this multi-master cluster setup..

You can configure two resource groups, such as:
# clrg create -n node-a,node-b prod-rg
# clrg create -n node-b qa-rgand you configure the required resources (disk groups / file systems, logical host, oracle listener, oracle server) as described within
[http://docs.sun.com/app/docs/doc/819-2980?l=en&a=expand|http://docs.sun.com/app/docs/doc/819-2980?l=en&a=expand]
Note that this is not really called a "multi-master" configuration - that has a specific meaning for a resource group (see [http://docs.sun.com/app/docs/doc/820-4682/babefcja?l=en&a=view|http://docs.sun.com/app/docs/doc/820-4682/babefcja?l=en&a=view] ) for details.
With Solaris Cluster all nodes part of a cluster are considered active and can host resource groups. You can have any number of resource groups running, where a subset runs one one node, another subset on other nodes. The nodelist property of the resource group defines where it can run, the first node in the list is the preferred primary.
You can even define resource group dependencies or affinities between the resource groups. Like you could define a negative affinity between qa-rg and prod-rg, such as if prod-rg needs to failover to node-b (since e.g. node-a died), it would offline qa-rg. Details for that kind of possibilities are described at [http://docs.sun.com/app/docs/doc/820-4682/ch14_resources_admin-35?l=en&a=view|http://docs.sun.com/app/docs/doc/820-4682/ch14_resources_admin-35?l=en&a=view].
Regards
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Hi,
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Since I do not want to install central instance within the cluster, should I install two standalone web dispatcers within the two nodes, and then HA it? Or maybe just install it on the shared storage with CFS once?
And specifically, what kind of resource type should I use for it? SUNW.sapwebas?
Thanks in advance,
Stephen

Hi all.
I am having a similar issue with a Sun Cluster 3.2 and SAP 7.0
Scenrio:
Central Instance (not incluster) : Started on one node
Dialog Instance (not in cluster): Started on the other node
When I create the resource for SUNW.sap_as like
clrs create --g sap-rg -t SUNW.sap_as .....etc etc
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TIA

File System Sharing using Sun Cluster 3.1

Hi,
I need help on how to setup and configure the system to share a remote file system that is created on a SAN disk (SAN LUN ) between two Sun Solaris 10 servers.
The files in the remote system should be read/writabe from both the solaris servers concurrently.
As a security policy NFS mount is not allowed. Some one suggested it can be done by using Sun Cluster 3.1 agents on both servers. Any details on how I can do this using Sun Cluster 3.1 is really appreciated.
thanks
Suresh

You could do this by installing Sun Cluster on both systems and then creating a global file system on the shared LUN. However, if there was significant write activity on both nodes, then the performance will not necessarily what you need.
What is wrong with the security of NFS? If it is set up properly I don't think this should be a problem.
The other option would be to use shared QFS, but without Sun Cluster.
Regards,
Tim
---

Sun cluster 3.1 on Solaris 10 update1

Hi All,
Good day !!!
I am trying to build Sun Cluster 3.1 on Sun Solaris 10 update1 operating system.
I am using sun V240 servers. If i plumb bge1 and bge2 the second
and third interface and reboot the server system is not comming up.
it promts error saying "init" failed and it stops responding.
Also if i create /etc/defaultrouter file and put gateway system is not comming up.
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Thanks,
nagaraju

Hi, I am not sure what your network setup looks like but I assume that you have configured your first port as the public network. You do not need to touch any other interface for the cluster setup manually. During the installation procedure you just give the names of your private network ports to the scinstall procedure. This will do all the setup for you.
The V240 is supported for SC3.1.
Regards
Hartmut

DS6 in a zone on a Sun Cluster

I have a sun cluster that I am trying to configure and I don't know if I am trying to do something wrong, so I thought I would ask.
I am using Sun Cluster 3.2 on a pair of Sun T2000s with a Fiber Channel disk array attached to both nodes. I have configured the disk array to have two file systems. One for each server. I have configured two resource groups in the global zone and setup a HAStoragePlus resource for each file system. I am successfully able to fail the file systems between the two nodes. On each of the file systems I have installed a zone. The zone is managed with the resource type provided by the SUNWsczone package to start and stop the zone. The resource is in the same resource group has the HAStoragePlus resource.
At this point I have created resource group for the zone to manage the directory server. After creating the resource group I am trying to create a resource for the directory service HA service. When I use the clresource command it complains that the resource group does not contain a logical hostname. When using the services provided by the SUNWsczone package I created a logical hostname that is being assigned to the zone in question. Is there a way to install the Directory Server HA resource into the resource group for the zone?

Philippe,
DS 6 Sun Cluster Agent was not tested with SC 3.2 in Zones.
Zone support came with SC 3.2, and DS 6 Cluster Agent was built with SC 3.1, tested with SC 3.1 and 3.2 in the Global zone.
Regards,
Ludovic.

Install of HA MaxDB in a Sun Cluster 3.2 environment

Hi. I am installing SAP Content Server using MaxDB in a Sun Cluster 3.2 environment. According to the SUN doc, I must install the X_server as a scalable resource/service. For a scalable resource, I have to make the disk available on both nodes of the cluster. I need to identify what are all the executables for the x_server so that I can make those mount points a NFS share. From looking at the content of previous non-clustered installs, I am thinking I need to make the directories /sapdb/data and /sapdb/program NFS to isolate the x_server components. Does anyone have experience with this setup ? I've placed a log with OSS but wanted to see if anyone else in the forum has done this before. Thanks for any input.

Hello Dan,
Please review the SAP Note No. 803452.
X_server tool is the the part of the indepentent database software installation <independent_program_path>. Using NFS you could set up the <independent_program_path> and <independent_data_path> directories as share directories.
Thank you and best regards, Natalia Khlopina

Shared Tuxedo 8.0 Binaries on a SUN Cluster 3.0

I know pefectly well that in every installation document BEA strongly advise not to
try to share executables across remote file systems (NFS etc.) Still i need to ask
if one of you have any experience in a setup of a SUN 8 / SUN cluster 3.0 enviroment,
where 2 or more nodes shares disks by the same SUN 3 cluster. The basic idea is to
have the the Tux8 binaries installed only once, and then separate all the "dynamic"
files tmconfig, tlogdevices etc in to its own respective katalog (/node1, /node2
etc.) But stil they remain on the clusterd disks.
Thank you for a quick response.
Best of regards
Raoul

We have the same problem with 2 SUN E420 and a D1000 storage array.
The problem is releted to the settings on the file :
/etc/system
added by the cluster installation :
set rpcmod:svc_default_stksize=0x4000
set ge:ge_intr_mode=0x833
the second one line try to set a Gigabit Ethernet Interface that does not exist.
We comment out the two line and every things work fine.
I'm interesting to know what you think about Sun Cluster 3.0. and your experience.
email : [email protected]
Stefano

LDOM SUN Cluster Interconnect failure

I am making a test SUN-Cluster on Solaris 10 in LDOM 1.3.
in my environment, i have T5120, i have setup two guest OS with some configurations, setup sun cluster software, when executed, scinstall, it failed.
node 2 come up, but node 1 throws following messgaes:
Boot device: /virtual-devices@100/channel-devices@200/disk@0:a File and args:
SunOS Release 5.10 Version Generic_139555-08 64-bit
Copyright 1983-2009 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
Hostname: test1
Configuring devices.
Loading smf(5) service descriptions: 37/37
/usr/cluster/bin/scdidadm: Could not load DID instance list.
/usr/cluster/bin/scdidadm: Cannot open /etc/cluster/ccr/did_instances.
Booting as part of a cluster
NOTICE: CMM: Node test2 (nodeid = 1) with votecount = 1 added.
NOTICE: CMM: Node test1 (nodeid = 2) with votecount = 0 added.
NOTICE: clcomm: Adapter vnet2 constructed
NOTICE: clcomm: Adapter vnet1 constructed
NOTICE: CMM: Node test1: attempting to join cluster.
NOTICE: CMM: Cluster doesn't have operational quorum yet; waiting for quorum.
NOTICE: clcomm: Path test1:vnet1 - test2:vnet1 errors during initiation
NOTICE: clcomm: Path test1:vnet2 - test2:vnet2 errors during initiation
WARNING: Path test1:vnet1 - test2:vnet1 initiation encountered errors, errno = 62. Remote node may be down or unreachable through this path.
WARNING: Path test1:vnet2 - test2:vnet2 initiation encountered errors, errno = 62. Remote node may be down or unreachable through this path.
clcomm: Path test1:vnet2 - test2:vnet2 errors during initiation
CREATED VIRTUAL SWITCH AND VNETS ON PRIMARY DOMAIN LIKE:<>
532 ldm add-vsw mode=sc cluster-vsw0 primary
533 ldm add-vsw mode=sc cluster-vsw1 primary
535 ldm add-vnet vnet2 cluster-vsw0 test1
536 ldm add-vnet vnet3 cluster-vsw1 test1
540 ldm add-vnet vnet2 cluster-vsw0 test2
541 ldm add-vnet vnet3 cluster-vsw1 test2
Primary DOmain<>
bash-3.00# dladm show-dev
vsw0 link: up speed: 1000 Mbps duplex: full
vsw1 link: up speed: 0 Mbps duplex: unknown
vsw2 link: up speed: 0 Mbps duplex: unknown
e1000g0 link: up speed: 1000 Mbps duplex: full
e1000g1 link: down speed: 0 Mbps duplex: half
e1000g2 link: down speed: 0 Mbps duplex: half
e1000g3 link: up speed: 1000 Mbps duplex: full
bash-3.00# dladm show-link
vsw0 type: non-vlan mtu: 1500 device: vsw0
vsw1 type: non-vlan mtu: 1500 device: vsw1
vsw2 type: non-vlan mtu: 1500 device: vsw2
e1000g0 type: non-vlan mtu: 1500 device: e1000g0
e1000g1 type: non-vlan mtu: 1500 device: e1000g1
e1000g2 type: non-vlan mtu: 1500 device: e1000g2
e1000g3 type: non-vlan mtu: 1500 device: e1000g3
bash-3.00#
NOde1<>
-bash-3.00# dladm show-link
vnet0 type: non-vlan mtu: 1500 device: vnet0
vnet1 type: non-vlan mtu: 1500 device: vnet1
vnet2 type: non-vlan mtu: 1500 device: vnet2
-bash-3.00# dladm show-dev
vnet0 link: unknown speed: 0 Mbps duplex: unknown
vnet1 link: unknown speed: 0 Mbps duplex: unknown
vnet2 link: unknown speed: 0 Mbps duplex: unknown
-bash-3.00#
NODE2<>
-bash-3.00# dladm show-link
vnet0 type: non-vlan mtu: 1500 device: vnet0
vnet1 type: non-vlan mtu: 1500 device: vnet1
vnet2 type: non-vlan mtu: 1500 device: vnet2
-bash-3.00#
-bash-3.00#
-bash-3.00# dladm show-dev
vnet0 link: unknown speed: 0 Mbps duplex: unknown
vnet1 link: unknown speed: 0 Mbps duplex: unknown
vnet2 link: unknown speed: 0 Mbps duplex: unknown
-bash-3.00#
and this configuration i give while setting up scinstall
Cluster Transport Adapters and Cables <<<You must identify the two cluster transport adapters which attach
this node to the private cluster interconnect.
For node "test1",
What is the name of the first cluster transport adapter [vnet1]?
Will this be a dedicated cluster transport adapter (yes/no) [yes]?
All transport adapters support the "dlpi" transport type. Ethernet
and Infiniband adapters are supported only with the "dlpi" transport;
however, other adapter types may support other types of transport.
For node "test1",
Is "vnet1" an Ethernet adapter (yes/no) [yes]?
Is "vnet1" an Infiniband adapter (yes/no) [yes]? no
For node "test1",
What is the name of the second cluster transport adapter [vnet3]? vnet2
Will this be a dedicated cluster transport adapter (yes/no) [yes]?
For node "test1",
Name of the switch to which "vnet2" is connected [switch2]?
For node "test1",
Use the default port name for the "vnet2" connection (yes/no) [yes]?
For node "test2",
What is the name of the first cluster transport adapter [vnet1]?
Will this be a dedicated cluster transport adapter (yes/no) [yes]?
For node "test2",
Name of the switch to which "vnet1" is connected [switch1]?
For node "test2",
Use the default port name for the "vnet1" connection (yes/no) [yes]?
For node "test2",
What is the name of the second cluster transport adapter [vnet2]?
Will this be a dedicated cluster transport adapter (yes/no) [yes]?
For node "test2",
Name of the switch to which "vnet2" is connected [switch2]?
For node "test2",
Use the default port name for the "vnet2" connection (yes/no) [yes]?
i have setup the configurations like.
ldm list -l nodename
NODE1<>
NETWORK
NAME SERVICE ID DEVICE MAC MODE PVID VID MTU LINKPROP
vnet1 primary-vsw0@primary 0 network@0 00:14:4f:f9:61:63 1 1500
vnet2 cluster-vsw0@primary 1 network@1 00:14:4f:f8:87:27 1 1500
vnet3 cluster-vsw1@primary 2 network@2 00:14:4f:f8:f0:db 1 1500
ldm list -l nodename
NODE2<>
NETWORK
NAME SERVICE ID DEVICE MAC MODE PVID VID MTU LINKPROP
vnet1 primary-vsw0@primary 0 network@0 00:14:4f:f9:a1:68 1 1500
vnet2 cluster-vsw0@primary 1 network@1 00:14:4f:f9:3e:3d 1 1500
vnet3 cluster-vsw1@primary 2 network@2 00:14:4f:fb:03:83 1 1500
ldm list-services
VSW
NAME LDOM MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
primary-vsw0 primary 00:14:4f:f9:25:5e e1000g0 0 switch@0 1 1 1500 on
cluster-vsw0 primary 00:14:4f:fb:db:cb 1 switch@1 1 1 1500 sc on
cluster-vsw1 primary 00:14:4f:fa:c1:58 2 switch@2 1 1 1500 sc on
ldm list-bindings primary
VSW
NAME MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
primary-vsw0 00:14:4f:f9:25:5e e1000g0 0 switch@0 1 1 1500 on
PEER MAC PVID VID MTU LINKPROP INTERVNETLINK
vnet1@gitserver 00:14:4f:f8:c0:5f 1 1500
vnet1@racc2 00:14:4f:f8:2e:37 1 1500
vnet1@test1 00:14:4f:f9:61:63 1 1500
vnet1@test2 00:14:4f:f9:a1:68 1 1500
NAME MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
cluster-vsw0 00:14:4f:fb:db:cb 1 switch@1 1 1 1500 sc on
PEER MAC PVID VID MTU LINKPROP INTERVNETLINK
vnet2@test1 00:14:4f:f8:87:27 1 1500
vnet2@test2 00:14:4f:f9:3e:3d 1 1500
NAME MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
cluster-vsw1 00:14:4f:fa:c1:58 2 switch@2 1 1 1500 sc on
PEER MAC PVID VID MTU LINKPROP INTERVNETLINK
vnet3@test1 00:14:4f:f8:f0:db 1 1500
vnet3@test2 00:14:4f:fb:03:83 1 1500
Any Idea Team, i beleive the cluster interconnect adapters were not successfull.
I need any guidance/any clue, how to correct the private interconnect for clustering in two guest LDOMS.

You dont have to stick to default IP's or subnet . You can change to whatever IP's you need. Whatever subnet mask you need. Even change the private names.
You can do all this during install or even after install.
Read the cluster install doc at docs.sun.com

Wrong hostname setting after Sun Cluster failover

Hi Gurus,
our PI system has been setup to fail over in a sun cluster with a virtual hostname s280m (primary host s280 secondary host s281)
The basis team set up the system profiles to use the virtual hostname, and I did all the steps in SAP Note 1052984 "Process Integration 7.1 High Availability" (my PI is 7.11)
Now I believe to have substituted "s280m" in every spot where previously "s280" existed, but when I start the system on the DR box (s281), the java stack throws erros when starting. Both SCS01 and DVEBMGS00 work directories contain a file called dev_sldregs with the following error:
Mon Apr 04 11:55:22 2011 Parsing XML document.
Mon Apr 04 11:55:22 2011 Supplier Name: BCControlInstance
Mon Apr 04 11:55:22 2011 Supplier Version: 1.0
Mon Apr 04 11:55:22 2011 Supplier Vendor:
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Mon Apr 04 11:55:22 2011 HTTP trace: false
Mon Apr 04 11:55:22 2011 Data trace: false
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Mon Apr 04 11:55:22 2011 Use binary key file '/usr/sap/XP1/SYS/global/slddest.cfg.key' for data decryption
Mon Apr 04 11:55:22 2011 Use encryted destination file '/usr/sap/XP1/SYS/global/slddest.cfg' as data source
Mon Apr 04 11:55:22 2011 ******************************
Mon Apr 04 11:55:22 2011 *** Start SLD Registration ***
Mon Apr 04 11:55:22 2011 ******************************
Mon Apr 04 11:55:22 2011 HTTP open timeout = 420 sec
Mon Apr 04 11:55:22 2011 HTTP send timeout = 420 sec
Mon Apr 04 11:55:22 2011 HTTP response timeout = 420 sec
Mon Apr 04 11:55:22 2011 Used URL: http://s280:50000/sld/ds
Mon Apr 04 11:55:22 2011 HTTP open status: false - NI RC=0
Mon Apr 04 11:55:22 2011 Failed to open HTTP connection!
Mon Apr 04 11:55:22 2011 ****************************
Mon Apr 04 11:55:22 2011 *** End SLD Registration ***
Mon Apr 04 11:55:22 2011 ****************************
notice it is using the wrong hostname (s280 instead of s280m). Where did I forget to change the hostname? Any ideas?
thanks in advance,
Peter

Please note that the PI system is transparent about the Failover system used.
When you configure the parameters against the mentioned note, this means that in case one of the nodes is down, the load will be sent to another system under the same Web Dispatcher/Load Balancer.
When using the Solaris failover solution, it covers the whole environment, including the web dispatcher, database and all nodes.
Therefore, please check the configuration as per the page below, which talks specifically about the Solaris failover solution for SAP usage:
http://wikis.sun.com/display/SunCluster/InstallingandConfiguringSunClusterHAfor+SAP

Sun Cluster + meta set shared disks -

Guys, I am looking for some instructions that most sun administrators would mostly know i believe.
I am trying to create some cluster resource groups and resources etc., but before that i am creating the file systems that is going to be used by two nodes in the sun cluster 3.2. we use SVM.
I have some drives that i plan to use for this specific cluster resource group that is yet to be created.
i know i have to create a metaset since thats how other resource groups in my environment are setup already so i will go with the same concept.
# metaset -s TESTNAME
Set name = TESTNAME, Set number = 5
Host Owner
server1
server2
Mediator Host(s) Aliases
server1
server2
# metaset -s TESTNAME -a /dev/did/dsk/d15
metaset: server1: TESTNAME: drive d15 is not common with host server2
# scdidadm -L | grep d6
6 server1:/dev/rdsk/c10t6005076307FFC4520000000000004133d0 /dev/did/rdsk/d6
6 server2:/dev/rdsk/c10t6005076307FFC4520000000000004133d0 /dev/did/rdsk/d6
# scdidadm -L | grep d15
15 server1:/dev/rdsk/c10t6005076307FFC4520000000000004121d0 /dev/did/rdsk/d15
Do you see what i am trying to say ? If i want to add d6 in the metaset it will go through fine, but not for d15 since it shows only against one node as you see from the scdidadm output above.
Please Let me know how i share the drive d15 same as d6 with the other node too. thanks much for your help.
-Param
Edited by: paramkrish on Feb 18, 2010 11:01 PM

Hi, Thanks for your reply. You got me wrong. I am not asking you to be liable for the changes you recommend since i know thats not reasonable while asking for help. I am aware this is not a support site but a forum to exchange information that people already are aware of.
We have a support contract but that is only for the sun hardware and those support folks are somewhat ok when it comes to the Solaris and setup but not that experts. I will certainly seek their help when needed and thats my last option. Since i thought this problem that i see is possibly something trivial i quickly posted a question in this forum.
We do have a test environment but that do not have two nodes but a 1 node with zone clusters. hence i dont get to see this similar problem in the test environment and also the "cldev populate" would be of no use as well to me if i try it in the test environment i think since we dont have two nodes.
I will check the logs as you suggested and will get back if i find something. If you have any other thoughts feel free to let me know ( dont bother about the risks since i know i can take care of that ).
-Param

SUN cluster data service for JCAPS 513

Hi,
I am trying to setup scalable data service for logical host (JCAPS 513) using SUN cluster. Did anybody tried in the past or is it feasible?
The requirement is to run the JCAPS simulateneously on two servers hosted across two data centers geographically apart.
Regards
Srinivas

support.oracle.com
just create a login, you might need a serial number or a support identifier..
.7/M.

Sun cluster with netapps filers

Has any one running sun cluster 3 with netapps filers. We would primary running oracle databases but would be running some apps servers as well.
There does appear to be some issues in rgard to the fact that NFS file locking is not the same as on a standard filesystem.
Also I can see how the logical host would be setup to mount a NFS filesystem instead of say mounting a filesystem that is using volume maanager

Today, only Oracle RAC is supported under Sun Cluster 3.1
using NetApp filers as shared storage. RAC has a builtin
distributed lock manager to arbitrate access to the shared
files. If you want to use your own application, then it needs
a lock manager or you can wait for a later Sun Cluster release.
-- richard

Does oracle clusterware and oracle RAC require sun cluster

Hi,
I have to setup oracle RAC on solaris 10 SPARC. so is it necessary to install sun cluster 3.2, QFS file system on solaris
I have 2 sun sparc servers with solaris 10 installed on it and shared LUN setup(SAN disk RAID 5 partitions)
Have to have 2 node setup for RAC load balancing.
Regards
Prakash

Hi Prakash,
very interesting point:
As per oracle clusterware documents the cluster manager support is only for windows and linux.
In case of solaris SPARC will the cluster manager get configured ???
The term "Cluster Manager" refers to a "cluster manager" that Oracle used in 9i times and this one was indeed only available on Linux / Windows.
Therefore, let me, please, ask you something: Which version of Oracle RAC do you plan to use?
Because for 9i RAC, you would need Sun or Veritas Cluster on Solaris. The answers given here that Sun Cluster would not be required assume 10g RAC or higher.
Now, you might see other dependencies which can be resolved by Sun Cluster. I cannot comment on those.
For the RAW setup: having RAW disks (not raw logical volumes) will be fine without Veritas and ASM on top.
Hope that helps. Thanks,
Markus

Any experience with NFS failover in Sun Cluster?

Hello,
I am planning to install dual-node Sun Cluster for NFS failover configuration. The SAN storage is shared between nodes via Fibre Channel. The NFS shares will be manually assigned to nodes and should fail over / takeback between nodes.
Is this setup tested well? How the NFS clients survive the failover (without "stale NFS handle" errrors)? Does it work smoothly for Solaris,Linux,FreeBSD clients?
Please share your experience.
TIA,
-- Leon

My 3 year old linux installtion on my laptop, which is my NFS client most of the time uses udp as default (kernel 2.4.19).
Anyway the key is that the NFS client, or better, the RPC implementation on the client is intelligent enough to detect a failed TCP connection and tries to reestablish it with the same IP address. Now once the cluster has failed over the logical IP the reconnect will be successful and NFS traffic continues as if nothing bad had happened. This only(!) works if the NFS mount was done with the "hard" option. Only this makes the client retry the connection.
Other "dumb" TCP based applications might not retry and thus would need manual intervention.
Regarding UFS or PxFS, it does not make a difference. NFS does not know the difference. It shares a mount point.
Hope that helped.

Sun Cluster 3.1 setup

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