Bonding, IP alias, Virtual IP, 2 nodes cluster


 
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Special Forums UNIX and Linux Applications High Performance Computing Bonding, IP alias, Virtual IP, 2 nodes cluster
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Old 07-28-2008
Bonding, IP alias, Virtual IP, 2 nodes cluster

Hi ! I have a simple setup of 2 PC (with linux Red-Hat) where the first PC is the primary machine and the second the backup. I use DRBD for data replication and Red-Hat cluster suite for HA (High Availability). I have tested both.

Now I NEED a COMMON IP ADDRESS (or Master/unique IP address) for my two system. When the primary machine fails (or shutdown), the backup system will do the job. From the external world, client who connect to my cluster will "connect to one address" or virtual IP and won't know if this is the primary system or the backup.

For now, my 2 machines have the same /etc/hosts file:

which contains: 10.60.1.23 PrimaryMachine
10.60.1.77 BackupMachine

Maybe I need to change the IP address for something local (192.168.1.0), I don't know. Theses address where created dynamically I think with DHCP when I installed Red-Hat on both machine.

I red many document about BONDING, IP ALIAS and VIRTUAL IP but now I am LOST !!!

What I do really need (keep it as simple as possible) and how to do it ???

Thank you very much.
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clusvcmgrd(8)                                                  Red Hat Cluster Suite                                                 clusvcmgrd(8)

NAME
rgmanager - Resource Group (Cluster Service) Manager Daemon DESCRIPTION
rgmanager handles management of user-defined cluster services (also known as resource groups). This includes handling of user requests including service start, service disable, service relocate, and service restart. The service manager daemon also handles restarting and relocating services in the event of failures. HOW IT WORKS
The service manager is spawned by an init script after the cluster infrastructure has been started and only functions when the cluster is quorate and locks are working. During initialization, the service manager runs scripts which ensure that all services are clear to be started. After that, it determines which services need to be started and starts them. When an event is received, members which are no longer online have their services taken away from them. The event should only occur in the case that the member has been fenced whenever fencing is available. When a cluster member determines that it is no longer in the cluster quorum, the service manager stops all services and waits for a new quorum to form. COMMAND LINE OPTIONS
-f Run in the foreground (do not fork). -d Enable debug-level logging. -w Disable internal process monitoring (for debugging). -N Do not perform stop-before-start. Combined with the -Z flag to clusvcadm, this can be used to allow rgmanager to be upgraded with- out stopping a given user service or set of services. SEE ALSO
clusvcadm(8) Jan 2005 clusvcmgrd(8)