Service Guard and gethostby name()

[Ken Polakowski_1]

I have an application that is running in a service guard environment.It calls gethostbyname to determine which node it is running on. The info returned is for the actual system where the process is running.
Is there some way to get the information for the floating IP address returned?

Thanx in Advacne,

Ken

[Tim D Fulford]

I'm not so sure I undestand you. If you mean a (fucticious) command like getpackagename(), you do not need it as the IP & package name should be unique, the variable is the host it is on.

If however, you expect gethostbyname to return your package name then it wont, it will return the host name.

Regards

Tim

[A. Clay Stephenson]

If you have a hostname entry in DNS, NIS, and/or /etc/hosts for your package name/IP address then that will be returned.

[melvyn burnard]

Take a read of the Managing MC/ServiceGuard at
http://docs.hp.com/hpux/pdf/B3936-90065.pdf and note the appendices , particularly D, Designing Applications to run on Multiple Systems, especially page 331.
Also see page 82 on gethostbyname and how hte Network manager works.

[Geoff Wild]

I'm not too sure exactly what you mean by getting the information about the floating ip....

You can do something like this to find out which node a package is running on:

cmviewcl |grep yourpackage |awk '{print $5}'


For floating ip, if you are trying to determine which host it is running on...how about:


echo quit |telnet floatingipdnsname 25 | grep 220 |awk '{print $2}'

Rgds...Geoff