Filter
Top Products
368 Appendix D
Using SNAplus2 in a High Availability Environment
Using SNAplus2 with MC/ServiceGuard
Assuming the applications attempt to activate a new LU-LU session
when they lose the LU-LU session they were using, you simply need to
wait for the migration to occur. The applications require no restart ing
because they run on client systems. The set of commands needed to start
HALS on the backup server are listed. Once the backup server reactivates
HALS, the applications will again be able to obtain LU-LU sessions.
SNAplus2 Package
To integrate SNAplus2 into your ServiceGuard cluster, an SNAplus2
package must be defined. Defining an SNAplus2 package tells
ServiceGuard that the SNAplus2 software on the HP 9000 server must
be highly available, and access to the SNA network is mission critical.
Defining an SNAplus2 package will allow ServiceGuard to do the
following:
• Automatically start the SNAplus2 software when the SNAplus2
package starts
• Automatically start a process to monitor the state of the SNAplus2
software on the server
• Automatically migrate the SNAplus2 package to a backup server if
the package ever fails to provide SNA network connectivity
ServiceGuard will monitor the health of the SNAplus2 package, and
migrate the package to another server if it should ever fail to provide
SNA network connectivity.
Several configuration steps are involved in defining packages. Follow the
ServiceGuard product documentation for planning and beginning the
package definition. ServiceGuard allows you to create a package using
SAM or using HP-UX commands and editors. The following suggestions
will help you create your SNAplus2 ServiceGuard package.