We are happy to help you out. Please find the answers inline. On Tue, Feb 6, 2018 at 4:39 PM, Marcus Pedersén <marcus.peder...@slu.se> 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 > > -- > ************************************************** > * Marcus Pedersén * > * System administrator * > ************************************************** > * Interbull Centre * > * ================ * > * Department of Animal Breeding & Genetics — SLU * > * Box 7023, SE-750 07 * > * Uppsala, Sweden * > ************************************************** > * Visiting address: * > * Room 55614, Ulls väg 26, Ultuna * > * Uppsala * > * Sweden * > * * > * Tel: +46-(0)18-67 1962 * > * * > ************************************************** > * ISO 9001 Bureau Veritas No SE004561-1 * > ************************************************** > _______________________________________________ > Gluster-users mailing list > Gluster-users@gluster.org > http://lists.gluster.org/mailman/listinfo/gluster-users -- Thanks and Regards, Kotresh H R
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