Re: [MooseFS-Users] MooseFS 4.0 and new features

[Zlatko Č. <zca...@bi...>]

On 20.05.2018 11:33, Jakub Kruszona-Zawadzki wrote:
>
>> On 19 May 2018, at 18:42, Gandalf Corvotempesta 
>> <gan...@gm... 
>> <mailto:gan...@gm...>> wrote:
>>
>> il sab 19 mag 2018, 17:48 Marco Milano <mar...@gm... 
>> <mailto:mar...@gm...>> ha scritto:
>>
>>     Tea Leaves   :-)
>>
>>
>> Seriously, where did you get this info?
>> How HA works in moosefs? Is failover automatic?
>>
>
> MooseFS 4.x now is in “close beta” (or even more “close 
> release-candidate”) stage. Currently we started to use it by 
> ourselves. When we will see that there are no obvious bugs then we 
> will release it as open-source product under GPL-v2 (or even GPL-v2+) 
> licence.
> In the meantime if you want to participate in tests of MFS 4.x - 
> please let us know, we will send you packages of MFS 4.x for you OS.
>
> Marco Milano is one of our “testers” and this is why he knows more 
> about MFS 4.x
>
> HA in MFS 4.x works fully automatic. You just need to define group of 
> IP numbers in your DNS for your “mfsmaster” name. Then install master 
> servers and run them on machines with those IP numbers and thats it. 
> One of them will became “LEADER” of the group and other “FOLLOWER”-s 
> of the group. If for any reason “LEADER” goes down then one of the 
> FOLLOWER’s is chosen as an “ELECT” and when more than half of 
> chunkservers connects to it then it automatically switches to “LEADER” 
> state and starts working as main master server. When your previous 
> leader becomes available again then it usually joins the group as a 
> “FOLLOWER”. This is rather “fire and forget” solution. They will 
> synchronise metadata between them automatically, chunkservers and 
> clients will reconnect to current leader also automatically etc.
>
> Regards,
> Jakub Kruszona-Zawadzki
>
>

Hey Jakub!

Such an excellent work on MooseFS, as always! Thank you for letting us 
know all these great news upfront!

With new features announces, I really don't see how any other SDS 
competitor will be able to compete. Of course, I may be biased, running 
MooseFS for several years, but also being very happy with it all that 
time. Occassionaly, I tested other SDS solutions, but none were match 
for MooseFS.

Last half a year, I've been successfully running MooseFS 3.0 as a 
Kubernetes deployment, and honestly I can't wait to see how new MooseFS 
4.0 HA will fit that scheme. I expect lots of fun, in any case!

Keep up the good work!

-- 
Zlatko