# Creating uneven distribution with allocation awareness **URL:** \ **Category:** Elasticsearch\ **Created:** [May 7, 2012, 2:50pm UTC](https://discuss.elastic.co/t/creating-uneven-distribution-with-allocation-awareness/7582 "2012-05-07T14:50:33Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Eran\_Kutner\_2](https://avatars.discourse-cdn.com/v4/letter/e/dc4da7/32.png) [@Eran\_Kutner\_2](https://discuss.elastic.co/u/Eran_Kutner_2)\ **Post date:** [May 7, 2012, 2:50pm UTC](https://discuss.elastic.co/t/creating-uneven-distribution-with-allocation-awareness/7582/1 "2012-05-07T14:50:33Z")
Hi, I'd like to deploy a cluster in two zones such that one zone (the primary) has 2 replicas and the other zone (the secondary) has only 1 replica of each shard. With forced awareness I can guarantee at least one copy will make it to the secondary zone but I don't see how to configure it to guarantee that two replicas from all shards shards of all the indexes will fall on one zone and one replica on the other. Will specifying the same zone twice in cluster.routing.allocation.awareness.force.zone.values do the trick? Or maybe assigning each node in the primary zone to two "virtual" zones? Thanks, Eran ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [May 9, 2012, 9:01am UTC](https://discuss.elastic.co/t/creating-uneven-distribution-with-allocation-awareness/7582/2 "2012-05-09T09:01:50Z")
The order of the zones listed in the forced awareness will control where the "extra" replicas will be placed. So list the zone that you want to have 2 copies as the first one in the forced awareness. On Mon, May 7, 2012 at 5:50 PM, Eran Kutner [eran@gigya-inc.com](mailto:eran@gigya-inc.com) wrote: > Hi, > I'd like to deploy a cluster in two zones such that one zone (the > primary) has 2 replicas and the other zone (the secondary) has only 1 > replica of each shard. > With forced awareness I can guarantee at least one copy will make it > to the secondary zone but I don't see how to configure it to guarantee > that two replicas from all shards shards of all the indexes will fall > on one zone and one replica on the other. > Will specifying the same zone twice in > cluster.routing.allocation.awareness.force.zone.values do the trick? > Or maybe assigning each node in the primary zone to two "virtual" > zones? > > Thanks, > Eran ---
**Author:** ![Eran\_Kutner\_2](https://avatars.discourse-cdn.com/v4/letter/e/dc4da7/32.png) [@Eran\_Kutner\_2](https://discuss.elastic.co/u/Eran_Kutner_2)\ **Post date:** [May 10, 2012, 8:52pm UTC](https://discuss.elastic.co/t/creating-uneven-distribution-with-allocation-awareness/7582/3 "2012-05-10T20:52:47Z")
Thanks. That works. On Wednesday, May 9, 2012 12:01:50 PM UTC+3, kimchy wrote: > The order of the zones listed in the forced awareness will control where > the "extra" replicas will be placed. So list the zone that you want to have > 2 copies as the first one in the forced awareness. > > Hi, > > > I'd like to deploy a cluster in two zones such that one zone (the > > primary) has 2 replicas and the other zone (the secondary) has only 1 > > replica of each shard. > > With forced awareness I can guarantee at least one copy will make it > > to the secondary zone but I don't see how to configure it to guarantee > > that two replicas from all shards shards of all the indexes will fall > > on one zone and one replica on the other. > > Will specifying the same zone twice in > > cluster.routing.allocation.awareness.force.zone.values do the trick? > > Or maybe assigning each node in the primary zone to two "virtual" > > zones? > > > > Thanks, > > Eran ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:29am UTC](https://discuss.elastic.co/t/creating-uneven-distribution-with-allocation-awareness/7582/4 "2017-07-06T03:29:23Z")