Thanks for your fast answer, and a few more questions: it seems that clones need to know their ips at configuration time. However since I plan using ec2-alike service, ips begin to get known at the time when node is actually started, can i notify linuxha of the exact ip at some later point in time (when specific script starts to wake the node up)?
And can i change clone_max in real time? bye andraz On Jan 23, 2008 12:03 PM, Andrew Beekhof <[EMAIL PROTECTED]> wrote: > > On Jan 22, 2008, at 10:03 AM, Andraz Tori wrote: > > > I am looking into Linux-HA to see if I could implement a system I > > need. I > > hope this is the right mailing list to ask if LinuxHA is the right > > solution > > for my challenge. > > > > As a computing infrastructure I have some kind of cloud service > > (imagine > > EC2), what I want to do is the following: > > There are 5 different types of backend services (resources) in the > > system > > and one frontend. However I need multiple resources of the same type > > running > > at any time. > > http://linux-ha.org/v2/Concepts/Clones > > > So I need LinuxHA to take care of having 3 resources of the > > same type available at any point in time. Hopefully I can send change > > messages so I can increase or decrease the number of resources of > > the same > > type that need to be available at any point in time (maybe from 3 to > > 5 for a > > few days and then scale down to two) . > > Sure, just change the value of clone_max > > > Then I have my own frontend deamon which users all those 5 backend > > resource > > types. I want this daemon to query LinuxHA every 10 seconds (via > > some API) > > and get information about where the resources are available (list ip > > numbers > > where resources are located for each resource type) so application > > gets the > > necessary information to do the load balancing. > > IIRC, you could also do the load balancing with a cloned IPaddr2 > resource. > Or colocate a number of known IPs with the application clone. > > > The last thing i need is a failover for the frontend application, > > but I can > > easily imagine how to do that with LinuxHA... However I need some > > clues > > about the proper way to do what I described earlier. > > > > Thank you very much for your help > > > > bye > > Andraz Tori > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
