SGeRAC

[Mawuse]

Hi,


I am installing SGeRAC for Oracle 10g on two HP-UX v23 Itanium servers connected to EVA 4000 through redundant SAN directors.
Can somebody help me with the steps to be taken to achieve that purpose ?

Thanks in advance.


Regards,
Berenger

[Svetoslav Gyurov · Accepted solution]

Hi,

So now you have to create cluster and configure package for Oracle. Another thing is do you have licensed SecurePath ? You have to prepare the nodes for cluster configuration:

On both nodes:
vi /etc/hosts
192.168.1.1 node1
192.168.1.2 node2

vi /etc/cmcluster/cmclnodelist
node1 root
node2 root

vi /.rhosts
node1 root
node2 root


Lets say that the vdisk from EVA appears as c15t0d0, you have to create volume group:

node1:
pvcreate /dev/rdsk/c15t0d0

mkdir /dev/vgcl

mknod /dev/vgcl/group c 64 0x010000

vgcreate vgcl /dev/dsk/c15t0d0

vgexport -p -s -m vgcl /tmp/vgcl.map

scp /tmp/vgcl.map node2:/tmp

node2:
mkdir /dev/vgcl

mknod /dev/vgcl/group c 64 0x010000

vgimport -s -m /tmp/vgcl.map vgcl

vgchange -a y vgcl
vgchange -a n vgcl


node1:
cd /etc/cmcluster

cmquerycl -v -C cmclconfig.ascii -n node1 -n node2

Now you have to edit cmclconfig.ascii and make the appropriate changes: cluster name, node names, network interfaces, network addresses, heartbeats, max configured packages. Once the cluster is created most of the parameters could not be changed to be warned. After the changes are made you can check if the configuration is working:

cmcheckconf -C /etc/cmcluster/cmclconfig.ascii

and if everything is fine you can apply the configuration and activate the cluster:

cmapplyconf -C /etc/cmcluster/cmclconfig.ascii

vgchange -a n vgcl

cmruncl -v

vgchange -c y vgcl


From now on you have working cluster and you have to create a package. Another thing is if you have a SecurePath installed, which will automaticly balance the traffic going through the SAN, if not you have to add physical links to the physical volumes in order to have high availability. Good luck.

Meanwhile take a look at the docs here:
http://docs.hp.com/en/T1859-90038/index.html

Regards.


--
sve

[Mawuse]

Hi,

Thank you very much for your reply. I helps me a lot. Cluster is up and running, but I used the shared VG between both nodes as VG lock. Can you please educate me a little bit about vglock and PV lock ? Do I need to create another virtual disk on the EVA for use as vg or PV lock ? the size ?

Thanks in advance for your reply.


Regards,
Mawuse

[Mawuse]

The cluster is up and running. Thanks for that.
I will post a message into the same forum for further help.