Am Mittwoch, 6. August 2008 09:36 schrieb Carlo Granisso: > First of all hello everybody.... :) > > I've few questions about heartbeat: > > 1) I need to make an HA system with no main node but "distributed" control > system: goal is to have a pool of N production servers with one (or more) > standby machine. When one of the N servers goes down, the other in standby > must become up. All machines can have it's indipendent disk and, for the > moment, sync data is not important. It's possibile this solution with > heartbeat?
Yes. > 2) Somewhere I've seen that with heartbeat is possible to have HA with more > than two nodes for a service (e.g. httpd or mysql) but I haven't found > tutorials that can help me (only for two nodes). It seems that from v2 is > it possible by enabling in ha.cf "crm" parameter. Can you help me with some > example? CRM will not help you here, you will need it anyway. You can acchieve this goal by using Linux Virtual Server as a load balancing solution in front of your application servers. Using the "localhost" feature of LVS you also can create a setup of load bancers and application servers on two machines with both machines beeing active. Alternatively you can use the CLUSTERIP feature of the IPaddr2 resource agent of Linux-HA (Version 2, crm=on). Please see the tutorial for this setup on: http://www.linux-ha.org/ClusterIP Please be careful with the second approach. It hasn't been tested in the wild a lot. Please mail me if you have any questions. Greetings, -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: [EMAIL PROTECTED] web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht München HRB 114375 Geschäftsführer: Günter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42 _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
