Hello, This thread is about a test setup using vmware, I use KVM and I do not know how to setup fence-vmware. (But I think others do)
In a production environment I recommend the following: 1) With a two node cluster, fencing is a bit tricky I have had some network connectivity error's resulting in both nodes trying to fence the other node. Therefore I recommend setting up a second dedicated "hardbeat" network. (two corosync rings). This second network does not need to be expensive network equipment. When using network bonding, use the bond it selves for the corosync ring, not a vlan (like bond0.10) bonding and vlan is not always a stable combination on EL6. (I found out the hard way) 2) Add a third "witness server" so there should always be two majority votes left in the cluster. I hope this helps, Best regards, Maurits van de Lande -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Felix Frank Verzonden: woensdag 31 oktober 2012 9:31 Aan: [email protected] Onderwerp: Re: [DRBD-user] GFS2 freezes On 10/31/2012 12:02 AM, Lars Ellenberg wrote: >>> Manual fencing is not in any way supported. You must be able to call >>> > > 'fence_node <peer>' and have the remote node reset. If this >>> > > doesn't happen, your fencing is not sufficient. >> > fence_node <peer> doesn't work for me >> > >> > fence_node node2 says >> > >> > fence node2 failed > Which is why you need a *real* fencing device for automatic fencing. ...which is bound to sound more than a little cryptic to the uninitiated, I assume. An example for a "classical" fencing method is a power distribution unit with network access. The surviving node accesses the PDU and cuts the power to its peer. This is just one example. Similar results can be achieved using IPMI/ILOM technologies etc. HTH, Felix _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
