It sounds to me as if you can accept one controller (current situation) or possibly three or four. But *two* controllers I not allowed. Why is two a magic bad number ?
The "cost savings" (if any) would disappear with 3 or 4 controllers also, would it not ? In addition, in the headless state that you will be in with no controller may have saved you some hardware cost, but it has the downside of losing the cluster level service availability support. Bottom line is you will get reduced service availability (that’s a statistical parameter). Off the shelf hardware is amazingly cheap, typically insignificant in relation to the cost of a service outage, for both the customer and the provider of the platform. /Anders Bjornerstedt -----Original Message----- From: Tony Hart [mailto:[email protected]] Sent: den 11 oktober 2015 14:31 To: [email protected] Subject: [users] Avoid rebooting payload modules after losing system controller We have been using opensaf in our product for a couple of years now. One of the issues we have is the fact that payload cards reboot when the system controllers are lost. Although our payload card hardware will continue to perform its functions whilst the software is down (which is desirable) the functions that the software performs are obviously not performed (which is not desirable). Why would we loose both controllers, surely that is a rare circumstance? Not if you only have one controller to begin with. Removing the second controller is a significant cost saving for us so we want to support a product that only has one controller. The most significant impediment to that is the loss of payload software functions when the system controller fails. I’m looking for suggestions from this email list as to what could be done for this issue. One suggestion, that would work for us, is if we could convince the payload card to only reboot when the controller reappears after a loss rather than when the loss initially occurs. Is that possible? Another possibility is if we could support more than 2 controllers, for example if we could support 4 (one active and 3 standbys) that would also provide a solution for us (our current payloads would instead become controllers). I know that this is not currently possible with opensaf. thanks for any suggestions, — tony ------------------------------------------------------------------------------ _______________________________________________ Opensaf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensaf-users ------------------------------------------------------------------------------ _______________________________________________ Opensaf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensaf-users
