On 17/01/17 19:00, Stefan M. Radman wrote: > Hi Lejeczek > >> my iDrac6 currently runs off a dedicated NIC, and afaik it can be either >> that or "shared". > If your iDRAC6 has a dedicated NIC it's an iDRAC6 Enterprise. > Available modes on the iDRAC6 Enterprise are: Dedicated, Shared, Shared with > Failover LOM2, and Shared with Failover All LOMs. > http://www.dell.com/support/article/us/en/19/SLN85572 > >> Thus, with "dedicated" not failover, am I right? > With "dedicated" the switch your iDRAC6 is connected to becomes a single > point of failure in your fencing logic.
it must have begged the question - why Dell would not make "Dedicated with Failover to..." I wonder if ever Dell answered this. >> And one would not sacrifice "dedicated" for redundancy, would one? > Yes, I would. What do you gain with "Dedicated"? > Use one of the "Shared with Failover" modes and redundant network paths the > same way you do with other cluster interfaces. > > Stefan > >> On Jan 17, 2017, at 6:32 PM, lejeczek <[email protected]> wrote: >> >> >> >> On 14/12/16 12:52, Stefan M. Radman wrote: >>> Hi Lejeczek, >>> >>> The Red Hat Access website has two solution documents (content restricted >>> to subscribers). >>> One for rgmanager (RHEL5-6) >>> How to configure fence_ipmilan with Red Hat Enterprise Linux High >>> Availability Add On >>> https://access.redhat.com/solutions/54843 >>> and one for pacemaker (RHEL 6-7) >>> How to configure fence_ipmilan with Red Hat Enterprise Linux High >>> Availability Pacemaker Add On on RHEL 6, 7 >>> https://access.redhat.com/solutions/2271811 >>> >>> One of my favorite open resources is Clusterlabs >>> http://wiki.clusterlabs.org/wiki/Configure_Multiple_Fencing_Devices_Using_pcs >>> >>> The pacemaker solution has been working reliably here (RHEL6,HA >>> AddOn,PE720) for more than two years now and actually triggered a few >>> times, at least once during an actual hardware issue. >>> >>> Here is the stonith configuration we're using in a 2-node HA cluster >>> running pacemaker on RHEL6: >>> >>> # pcs stonith create node1-pwr fence_ipmilan ipaddr=192.168.1.1 >>> lanplus=true login=root passwd=calvin pcmk_host_list=node1 >>> # pcs resource ban node1-pwr node1 >>> # pcs stonith create node2-pwr fence_ipmilan ipaddr=192.168.1.2 >>> lanplus=true login=root passwd=calvin pcmk_host_list=node2 >>> # pcs resource ban node2-pwr node2 >>> # pcs stonith show >>> node2-pwr (stonith:fence_ipmilan): Started node1 >>> node1-pwr (stonith:fence_ipmilan): Started node2 >>> >>> Make sure you have IPMI and redundancy (NIC failover) properly set up on >>> your iDRAC. >>> >>> Stefan >> oh, this is nice, many! thanks Stefan >> my iDrac6 currently runs off a dedicated NIC, and afaik it can be either >> that or "shared". >> Thus, with "dedicated" not failover, am I right? >> And one would not sacrifice "dedicated" for redundancy, would one? >> regards >> >> >>> On Dec 14, 2016, at 11:55 AM, lejeczek >>> <[email protected]<mailto:[email protected]>> wrote: >>> >>> hi everybody >>> >>> just a quick question, probably very easy for you guys - >>> iDracs as fencing device in HA configs(rhel's)? Would there >>> be any docs/howtos? >>> Or maybe there is better way to do that with PE servers? >>> >>> many thanks, >>> L. >>> >>> _______________________________________________ >>> Linux-PowerEdge mailing list >>> [email protected]<mailto:[email protected]> >>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge >>> _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge
