Mount the same file system from two servers 1

[MPeccorini]

Hi fellows,

I'm planning to implement a rudimentary failover configuration using two servers. I want to have Oracle installed in both servers (active in server1/passive in server2) and Apache/Tomcat also installed in both servers (active in server2/passive in server 1). In this way, if a server fails I can manually enable the appropriate services in the other server and get the applications up and running in a fairly cheap/easy/quick way.

What I want to know if I can have a file system mounted in server1 and, once server1 is down, mount the same file system in server2.

I will have HPUX 11i V2 in an HP Integrity box with to physical server partitions.

Best regards,

Mauricio Peccorini

 

[MikeLacey]

Hello Mauricio,

The "proper" (HP) way to do this is to use ServiceGuard which will do exactly what you want it to do.

If you have the Mission Critical operating environment then SG is included. If you don't you'll need to do some reading and then get someone convinced of the need for it so that you can spend some money.

Have a look at:

http://h71028.www7.hp.com/enterprise/cache/6468-0-0-225-121.aspx

Mike

"Deliver me from the bane of civilised life; teddy bear envy."

Want to get great answers to your Tek-Tips questions? Have a look at faq219-2884

 

[Martin999]

Hm, not clear where you data actually lives. Yes, you can have Oracle on both servers, but where are the tables ? These would need to be on a source that can be switched between the two servers/domains.

However, as above the correct way to do this is serviceguard. A manual solutions is asking for trouble as there are a number of problems you could encounter, depending on your exact setup.

Sorry if it's not the answer you wanted to hear.

Martin

 

[yai]

if you want to failover manually, you have to deactivate the volume groups on the primary node and activate the vgs on the backup node. the vg must be imported on both nodes, of course. then you can mount your filesystems and start oracle. i, too, recommend MCSG.

 

[MPeccorini]

Thanks a lot for your answers, effectively that was not what I wanted to hear (obviously because of the money), however, I still have the choice of buying the mission critical operating system. It looks like it is no longer "a choice" but the only way to do what we want.

 

[MikeLacey]

You're probably right, it's a good option.

You can buy it as a seperate product, no need to get the whole MC OE unless you want it for some other reason.

Mike

"Deliver me from the bane of civilised life; teddy bear envy."

Want to get great answers to your Tek-Tips questions? Have a look at faq219-2884