[Gluster-users] change IP address of working gluster cluster

[Attila Heidrich]

Thanks a lot answering!

Assymetric route is not an option - I guess; there are just two bricks at
the moment, I have changed hosts file for both.

Will look after the config files, thanks a lot again! Later on I will use
IP addresses for being sure :)


Regards,
Attila


2014-07-10 11:28 GMT+02:00 Jonathan Barber <jonathan.barber at gmail.com>:

> On 10 July 2014 09:51, Anders Blomdell <anders.blomdell at control.lth.se>
> wrote:
>
>> On 2014-07-10 10:11, Attila Heidrich wrote:
>> > Hi!
>> >
>> > I have seen, that someone else is having tha same problem, but he
>> received
>> > no answer at all.
>> > http://gluster.org/pipermail/gluster-users/2014-March/039421.html
>> >
>> > We have got the same problem. There are two NICs in all boxes, 1G and
>> 10G,
>> > and we started just the 1G, but now would like to use the other.
>> >
>> > IP addresses/networks are different (of course) and there are running
>> > services in the cluster.
>> >
>> > Is there a way to work out this easily?
>> >
>> > I'm pretty sure I can add new nodes on the new network and later remove
>> the
>> > old ones, but it would be nicer to have some way for changing connect
>> data
>> > of the same nodes.
>> If you want clients to use the 1G links, and servers to talk via the 10G
>> links,
>> 'ip route add <dest> src <1G address> dev <10G interface>' on all server
>> might help.
>>
>
> Will that not cause asymmetric flows? The traffic will leave via the 10GbE
> interface, but the destination IP is still the 1GbE interface, so it will
> arrive at the 1GbE interface on the other host.
>
> You can change the /etc/hosts entries, replacing the entries for the 1GbE
> IP with the 10GbE IP and then restarting the gluster processes.
>
> You could mess about with iptables and NAT, but I think at that point you
> might as well add/remove the hosts.
>
> I guess you can also update the configuration files under
> /var/lib/glusterfs and rename the brick files... You might want to test
> that first though :)
>
> Cheers
>
>
>> /Anders
>>
>> --
>> Anders Blomdell                  Email: anders.blomdell at control.lth.se
>> Department of Automatic Control
>> Lund University                  Phone:    +46 46 222 4625
>> P.O. Box 118                     Fax:      +46 46 138118
>> SE-221 00 Lund, Sweden
>>
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>>
>
>
>
> --
> Jonathan Barber <jonathan.barber at gmail.com>
>
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