Re: [Moosefs-users] Failover of MFSMaster

[Thomas S H. <tha...@gm...>]

There are some solutions which involve synchronized virtual machines,
many hyper-visors can do this.
If you are planning on using the metalogger + mfsrestore there will always
be a short failover lag.

Personally, what I think would be the best option would be if the metalogger
could populate the ram of a secondary read-only master. This is the
same essential way that redis does it.

The other option would be to set systems similar to mongo's HA solutions.

Of course these solutions would require the MooseFS developers
to implement them - I think that mfsmaster in-ram replication is something
that MooseFS is very close to.

Let us know what you decide on, there are a number of individuals using HA
solutions for MooseFS.

On Thu, Jun 9, 2011 at 5:06 AM, Florent Bautista <fl...@co...>wrote:

>  Hi all,
>
> I have a question about failover of mfsmaster.
>
> Which solution is the best, for now ?
>
> I don't know which solution to choose between :
>
> - drdb+heartbeat
> - mfsmetalogger+mfsrestore
>
> What do you think about it ? is there other ways to failover mfsmaster
> (active sync of RAM between 2 hosts ?) ?
>
> --
>
>
> Florent Bautista
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