Hi, On Mon, Oct 08, 2007 at 01:52:46PM -0700, Radu Handorean wrote: > Hello, > > The system has 2 nodes: NodeA (active) and NodeB (passive). I > want to design a scheme for updating the software and it seems > that updating the passive node, forcing a failoverm, and > updating the now passive (formerly active) node should work > (actually seems like the trivial thing to do:) ). If I pull > this off I should have the new software installed on both node, > with NodeB active and NodeA passive. Any reason why this would > not be a good approach? Any other suggestions? > > If the above is a good way to go, I wonder how can I interact > with the passive node from outside the 2-node system. My > understanding is that the entire system is seen from the > outside as a single entity behind one IP address which > identifies the active node (which can change in case of a > failover). In this case, how do I get to talk to the passive > node and prepare the new software on it? Let's assume the > upgrade is as easy as copying file.ext on the passive node. It > seems running a custom piece of software on the active node > (that can be reached from "outside") and have it do things on > my behalf on the passive node (reachable vis the internal or > backplane communication) might be a solution. Is there such a > mechanism already provided or do I need to write this myself? > Any other ideas about how to do this?
This has nothing to do with heartbeat, but... Typically, you configure the "service" IP addresses which are static and don't belong to the cluster configuration and then use these to manage the nodes. At least that's what I've seen people do in data centers. Otherwise, the cluster cannot help you when it comes to sw management. Thanks, Dejan > I have to mention I have no hands-on experience yet and as you > can see my discussion is at a theoretical level for now. > > Thanks for any suggestions, Radu > > > > > > ____________________________________________________________________________________ > Tonight's top picks. What will you watch tonight? Preview the hottest shows > on Yahoo! TV. > http://tv.yahoo.com/ > > _______________________________________________ > 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
