[lustre-discuss] MGS IP in a HA cluster

Sid Young sid.young at gmail.com
Thu Feb 18 14:06:42 PST 2021

Thanks for the clarification. :)

Sid Young
M: 0458 396300
W: https://off-grid-engineering.com
W: ( <https://z900collector.wordpress.com/restoration/>personal)

On Thu, Feb 18, 2021 at 4:35 PM Indivar Nair <indivar.nair at techterra.in>

> Hi Sid,
> 1.
> -- You don't need a Cluster/Virtual IP for Lustre. Only the MGT, MDT and
> OST volumes need to be failed over.
>     When these volumes are failed over to the other server, all the
> components of the Lustre file system are informed about this failover, and
> they will then continue accessing these volumes using the IP of the
> failover server.
> 2.
> -- No. MGS IP should also be in the same network(s) as MDS and OSS.
> If you are using IML for installation and management of Lustre, then this
> should be on a different network (for example, your 10G network (or a 1G
> network)).
> Regards,
> Indivar Nair
> On Thu, Feb 18, 2021 at 10:29 AM Sid Young <sid.young at gmail.com> wrote:
>> G'day all,
>> I'm trying to get my head around configuring a new Lustre 2.12.6 cluster
>> on Centos 7.9, in particular the correct IP(s) for the MGS.
>> In a pacemaker based MDS cluster, when I define the IP for the HA, is
>> that the same IP used when referencing the MGS, or is the MGS IP only
>> specified by using the IP of both the MDS servers (assume dual MDS HA
>> cluster here)?
>> And, if I have a 100G ethernet network (for RoCE) for Lustre usage and a
>> 10G network for server access is the MGS IP based around the 100G network
>> or my 10G network?
>> Any help appreciated :)
>> Sid Young
>> _______________________________________________
>> lustre-discuss mailing list
>> lustre-discuss at lists.lustre.org
>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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