We are happy to help you out. Please find the answers inline.
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On Tue, Feb 6, 2018 at 4:39 PM, Marcus Pedersén <marcus.pedersen@xxxxxx> wrote:
Hi all,
I am planning my new gluster system and tested things out in
a bunch of virtual machines.
I need a bit of help to understand how geo-replication behaves.
I have a master gluster cluster replica 2
(in production I will use an arbiter and replicatied/distributed)
and the geo cluster is distributed with 2 machines.
(in production I will have the geo cluster distributed)
It's recommended to use slave also to be distribute replicate/aribiter/ec. Choosing only distribute will cause issues
when of the slave node is down and a file is being synced which belongs to that node. It would not sync
later.
Everything is up and running and creating files from client both
replicates and is distributed in the geo cluster.
The thing I am wondering about is:
When I run: gluster volume geo-replication status
I see both slave nodes one is active and the other is passive.
MASTER NODE MASTER VOL MASTER BRICK SLAVE USER SLAVE SLAVE NODE STATUS CRAWL STATUS LAST_SYNCED
------------------------------------------------------------ ------------------------------ ------------------------------ ------------------------------ ---------------------
gluster1 interbullfs /interbullfs geouser ssh://geouser@gluster-geo1::interbullfs-geo gluster-geo2 Active Changelog Crawl 2018-02-06 11:46:08
gluster2 interbullfs /interbullfs geouser ssh://geouser@gluster-geo1::interbullfs-geo gluster-geo1 Passive N/A N/A
If I shutdown the active slave the status changes to faulty
and the other one continues to be passive.
MASTER NODE MASTER VOL MASTER BRICK SLAVE USER SLAVE SLAVE NODE STATUS CRAWL STATUS LAST_SYNCED
------------------------------------------------------------ ------------------------------ ------------------------------ ------------------------------ ----------
gluster1 interbullfs /interbullfs geouser ssh://geouser@gluster-geo1::interbullfs-geo N/A Faulty N/A N/A
gluster2 interbullfs /interbullfs geouser ssh://geouser@gluster-geo1::interbullfs-geo gluster-geo1 Passive N/A N/A
In my understanding I thought that if the active slave stopped
working the passive slave should become active and should
continue to replicate from master.
Am I wrong? Is there just one active slave if it is setup as
a distributed system?
The Active/Passive notion is for master node. If gluster1 master node is down glusterd2 master node will become Active.
It's not for slave node.
What I use:
Centos 7, gluster 3.12
I have followed the geo instructions:
http://docs.gluster.org/en/latest/Administrator%20Guide/ Geo%20Replication/
Many thanks in advance!
Bets regards
Marcus
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Thanks and Regards,
Kotresh H R_______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users
