Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I found out that proxmox doc says a lot abou Fencing. I haven't found anything about it in Ganeti doc. Also I screeched Ganeti Google Group Archive and I found similar question but answer was that Split Brain is not a problem in Ganeti and questioner should read archive.

So I wonder if Ganeti solved in some creative way or just ignored the problem? I'm especially interested in setups with only two nodes.

share|improve this question

2 Answers 2

up vote 3 down vote accepted

I think I founded answer for my question - Ganeti has only manual failover. Fencing is only needed in case of automatic failover to prevent concurrent access to the same resource (since in case of split nodes with quorum can't be sure if other nodes are dead ore there is only communication problem - STONITH), but in case on manual failover you relay on admins's judgement.

share|improve this answer

Maciek, you're correct, Ganeti only provides manual failover. With the oob framework we have the basic capability to do STONITH (via integration with a site-local framework; see internal documentation at docs.ganeti.org), but we have not yet extended this to automatic failover.

share|improve this answer
    
So does it still needs manual intervention? –  chandank Jan 16 '13 at 1:59
    
@chandank - yes; in the 2.7 version (soon in beta) we have some experimental linux-ha ocf scripts, and we have an auto-repair tool in development, but things are not yet working "out-of-the-box". –  iustin Jan 17 '13 at 20:09
    
That sounds cool, I will give a try once 2.7 is out. –  chandank Jan 17 '13 at 22:54

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.