cluster

[Seymour]

Hi all

I'm new on clustering and I woluld like to know ho tow make cluster with the configuration below:
2 application server, 2 database server (all servers - rx8620), 2 EVA Storage. The cluster will work with Oracle. All hardware tested and working well. I need your help.

thanks,
seymour.

[RAC_1]

First start reading HA documents. What exactly you want to do? Have two node cluster? (You will have 2 cluster then-one for application and one for databases. You can also have one cluster with application1 an database1 and second cluster with spplication2 and database2)

1. install SG. You can go for latest version-11.16
2. Prepare your storage and do all prerequisite work.
3. Once all prerequisites are ready, then run cmquerycl and prepare config files. Once config files are ready, customize and distribute them with cmaplyconf.
4. cmmakepkg for creating allication and databse packages. Test.

[Seymour]

Hi RAC

I want to make one cluster with 4 nodes and I have ServiceGuard ver.12.

[RAC_1]

Procedure still remains the same. You decide which packages will failover to what nodes and then accordingly make them accessible from those hosts.

[Chan 007]

Hi,

Clustering is upto the Management/BC team to device how the SLA will work? You must get all these information.

But for your question

I understand that you have 4 Nodes.
Are they in one location or different locations? This answer is required.

Why you need 2 arrays?
This is because you have 2 Database to access different arrays?

Assuming in One location.

I would suggest if your dbs (assuming 2 instance running of 500 GB each and if you staorage can have more than 2 TB) then use one Storage.

Create 4 Packages

PKG1 - for Oracle DB running on Node1
NODE1 <---> NODE2 (With failover between 1 & 2)
PKG2 - For Oracle Apps (For DB1)
Running on NODE2 and will failover to NODE1

RKG3 - for Oracle DB sintance 2 on Node 3
will failove to Node 3 and 4, while PKG4 (Apps server for DB2) will failover from Node 4 to 3.

This is one way.
You run PKG1 (DB1) in Node 1 will failove to Node 2, Running DB2 on Node 2, will failover to Node 1, Application servers will run in Node 3 and Node 4 as load balancers.

Hope u get some idea

Chan

[Seymour]

I'm sorry. I did mistake...

I've 2 application server and 2 database server and I'm going to make 2 cluster with 2 nodes each one (application and database cluster) and I have 2 EVA with 28 disks (300GB)...

[Chan 007]

Seymour,

Good I got you,

read your answer, you really said what you want.

same thing.

Create 2 Clusters

Cluster 1 (2 Nodes, 2 Packages)- connections to one EVA
Pkg1 (DB) - runs on Node1 & will failover to Node 2
Pkg 2(App) - Runs on Node 2 and FO to Node 1

Same from CLuster 2 on Node 3 & 4 - connecting to EVA2

But you can also have 1 cluster with 4 nodes & 4 packages. Connection to 2 EVAs

You can choose any one of the above.


Chan

[Seymour]

Thanks Chan 007 for your answer.

because I'm new on clustering, could you please approximately step-by-step commands to create cluster. I have preloaded hp-ux 11.23 to rx8620 integrity server and latest version of Serviceguard.

thanks,
seymour.

[Darrel Louis]

Seymour,

Why do you want to create 2 SG-Cluster instaed of one?
For the steps to perform I suggest you read the following document:
http://docs.hp.com/en/B3936-90100/B3936-90100.pdf
Chapter 6 provides you a step by step procedure.

More info can be found:
http://docs.hp.com/en/ha.html#Serviceguard

Which version are you planning to use?
I thought that for hp-ux 11iv2, the latest SG-version is 11.17 and for 11iv1 SG-version 11.16.

GoodLuck

Darrel

[Albert_31]

Hello Seymour,

If you need step by step commands, then it would need a lot of planning and coordination etc. To start with you should have the following details

hardware
a) Determine the roles of the LAN interfaces ie primary, standby and heartbeat.
b) Get the list of the IP addresses as well.
c) We need to have atleast 1 common subnet between the servers..
d) Are both the nodes able to see the storages and luns assigned to the group. I believe it is an EVA..

Software
a) How many VG's are to be configured
b) How many LV's are to be configured and their mount points
c) How many packages are needed to be configured and which node is going to be the primary node etc
d) What is the application requirements..etc..

So you see there are a lot of questions that needs to be answered which makes it a bit difficult to help you offline..and give you step by step procedure.. we can give you a generic action plan to help you start..if that is what you want let me know and i shall help you..

get all the above, then we can work out methods to assist you..

regards

albert
PS mark a mail to pereira.albert@indiatimes.com

[Sivakumar TS]

Hi,

Find the below doc on Managing MC/ServiceGuard, it has the step by step procedures for all activites.

http://docs.hp.com/en/B3936-90073/index.html

Hope this helps

Siva

[Seymour]

hello Albert.

thank you for answer. I need just generic setup with hardware configuration listed below:
two rx-8620 integrity servers with 4 lan, 2 fibre card, 2 mirrored scsi hdd, one EVA with 28 hdd (300GB each one).

thanks,
seymour

[Albert_31]

Hello Seymour,

Sorry for the delay, find attached a very generic procedure for cluster creation. Do feel free to let me know if you are facing any issues during the creation.

My email ids are
albert_pereira at yahoo dot com
pereira dot albert at indiatimes dot com

regards

albert