[Gluster-users] Understand Geo Replication of a big Gluster

[Kotresh Hiremath Ravishankar]

Hi Axel,

No geo-replication can't be used without SSH. It's not configurable.
Geo-rep master nodes connect to slave and transfers data over ssh.

I assume you have created the geo-rep session before start.
In the command above, the syntax is incorrect. It should use "::" and not
":/"

gluster volume geo-replication gpool glusergeo::geovol start

Thanks,
Kotresh HR

On Fri, Jun 15, 2018 at 1:32 AM, Axel Gruber <axel at agm.de> wrote:

> Hello
>
> First of all Thank you for Information
>
> As First Try i want to setup Geo -Replication in a Test System with
> Virtual Machines
>
> So for the Test i have a distributed Gluster with 3 Nodes:
>
> Status of volume: gpool
> Gluster process                             TCP Port  RDMA Port  Online
> Pid
> ------------------------------------------------------------
> ------------------
> Brick glusers1:/mnt/glust/gpool             49152     0          Y
>  568
> Brick glusers2:/mnt/glust/gpool             49152     0          Y
>  574
> Brick glusers3:/mnt/glust/gpool             49152     0          Y
>  665
> NFS Server on localhost                     2049      0          Y
>  1127
> NFS Server on glusers2                      2049      0          Y
>  926
> NFS Server on glusers3                      2049      0          Y
>  695
>
> on The Slave Side i have created also a  volume
>
> Status of volume: geovol
> Gluster process                             TCP Port  RDMA Port  Online
> Pid
> ------------------------------------------------------------
> ------------------
> Brick glusergeo:/mnt/glust/geo              49152     0          Y
>  629
>
> The Maser Side can "see" the Hostname and Ping the IP of the Slave
> root at glusters1:~# ping glusergeo
> PING glusergeo (172.20.230.86) 56(84) bytes of data.
> 64 bytes from glusergeo (172.20.230.86): icmp_seq=1 ttl=64 time=3.85 ms
>
> So for Test i not want to use SSH and i Tryed:
>
>
> root at glusters1:~# gluster volume geo-replication gpool glusergeo:/geovol
> start
> Invalid Url: glusergeo:/geovol
>
> Is it not possible to user geoReplication without SSH ?
>
> Best Regards
>
>
> Am Do., 14. Juni 2018 um 16:27 Uhr schrieb Milind Changire <
> mchangir at redhat.com>:
>
>> Hello Axel,
>> A warm welcome to you and happy to see you board the Gluster ship.
>>
>> geo-replication requires two clusters: one master cluster which is the
>> source cluster and the second cluster called the slave cluster which is the
>> destination cluster
>>
>> Just as you have created a primary/master cluster, you need to create
>> another cluster out of the backup servers in whatever configuration (volume
>> type) you want to create. The volume type of the slave cluster need not be
>> the same as the master cluster.
>>
>> Once you've created the slave cluster, you can then use geo-replication
>> commands to create a communication channel between the two clusters so that
>> the sources from the master cluster are replicated to the slave cluster and
>> to keep pushing any updates to the slave cluster.
>>
>> Hope this helps.
>>
>>
>>
>> On Thu, Jun 14, 2018 at 6:23 PM, Axel Gruber <axel at agm.de> wrote:
>>
>>> Hello
>>>
>>> Im new on GlusterFS - so a warm hello to everyone here...
>>>
>>> Im testing GlusterFS since some Weeks in different configurations for a
>>> big Media Storage
>>>
>>> Currently for start we plan a distributed / Replicated Gluster with for
>>> Nodes (4x70Tb)
>>> I tryed this within a Test Area on differenzt Virtual Machines - works
>>> fine.
>>>
>>> But for security Reason we also plan Geo Replication of the Whole
>>> Gluster. I have read Doc  - but one thing i dont understand:
>>>
>>> For example our Start Gluster has 4 Nodes (4x70TB  Replicated and
>>> Distributed) i have 140TB Capacity.
>>>
>>> So when i want to Geo Replicate this Volume i dont have a sigle Server
>>> wich is able to store 140GB (or later more) - but i can have several Backup
>>> Servers with a total Sice of 140TB
>>>
>>> So my Question
>>>
>>> How can i say Gluster FS in Geo Replication to use all of this Backup
>>> Servers to GEO REplicate the whole Storage using all Backup Server.
>>>
>>> Best Regards
>>>
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org
>>> http://lists.gluster.org/mailman/listinfo/gluster-users
>>>
>>
>>
>>
>> --
>> Milind
>>
>>
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-- 
Thanks and Regards,
Kotresh H R
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