FAIL OVER TESTING WITH OUT RE-LOGIN

[santhanam]

Hello

Pls clarify for the following doubt.

In the MCSG Cluster ( with 2 machines ) when a package from one machine shifts to other machine will the user process protected , that is user should be in his shell with out termination of his job(propably his screen can standstill for a minute). So user should not re-login to use his application.

The user names and respective ids are already present in the other system.

The user is connected via TCP/IP connection or to any dumb terminal.

The package is not RDBMS and it is just MF COBOL.

SO can the user work with out re-login. If not, is there any valid proof from HP to convince.

Kindly clarify on this.

Regards,

Santhanam.

[Cheryl Griffin]

Santhanam,

You may get more visibility to this message if you post it under
Forums HOME > HP-UX > Service Guard.

Best Wishes,
Cheryl

[James R. Ferguson]

Hi:

In an MC/ServiceGuard failover, your application ceases to exist on one node and is initialted on another node in the cluster. Therefore, the answer to your question is "no", the user would have to logon again.

...JRF...

[Anthony Goonetilleke]

If you do a ping to the package for example you will find a short delay as it moves over from one to the other but all applications/packages will have to shutdown and restart getting new UID's on the second machine but interms of a referncing an application t will be via the same IP address and depending on the application it can be made to look transparent if it is a client server application.

[Wodisch]

Hello,

if your "client" software is not written specifically to be
"fault tolerant", your user will experience a "break" or
"downtime" and possible have to restart or re-connect
the client to the server!

AFAIK that's true for all TCP/IP oriented communications,
UDP/IP may survice, though.

At least the client does not need to be re-configured in
a MC/ServiceGuard environment...

HTH,
Wodisch