Folks: --- "Phillips, Dave (CM - AZ)" wrote: I have a backup (Secondary system). How are any of you using a redundant system.
The best that I have come up with is to have the maps copied to the backup system. Have the backup system 1 map monitor the primary system, and if the primary stops responding (goes down) to have an apple script to load the maps from disk. --- end of quote --- This is a clever scheme. We have also been thinking about ways to do this. With the advent of dependencies in version 3.7, there are some powerful things we might do. Here are some of our thoughts: Dependencies are implemented as a "filter" that blocks certain notifications. That is, when a device generates a notification, that notification passes through a series of tests to determine whether it should be sent. Version 3.7 will implement topological dependencies. That is, if the only path between a map's reference point and an unresponsive device is through a failed device/link, then InterMapper will block the notification, assuming that the failure to respond is caused by the known failure. Future versions will allow you to specify dependencies manually. That is, you might declare that a web service depends on an authentication server and a database server. If either fail, then the notifications for the web server should be suppressed. I believe we could use this facility to provide backup/secondary monitoring in InterMapper. You can set up a second InterMapper copy as a backup, and declare that this backup server was (inversely) dependent on the primary InterMapper server. It would monitor the maps, and keep track of the state of the network. As long as the primary was responding, the backup would suppress notifications. Should the primary fail/become unavailable, the backup would take over the reins and begin sending notifications. And with some additional trickery using the InterMapper Remote protocol, the backup server could have up-to-date copies of the InterMapper maps, as well as accurate lists of the people to notify. How popular would this feature be? ____________________________________________________________________ Note: To unsubscribe from this mailing list, please send email to: <mailto:[EMAIL PROTECTED]> Thanks!
