# Replica shard does not get assigned to nodes after cluster recovery
**URL:** https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862
**Category:** Elasticsearch
**Created:** [February 13, 2017, 10:38am UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862 "2017-02-13T10:38:47Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@zozo6015](https://discuss.elastic.co/u/zozo6015)
#### Post date: [February 13, 2017, 10:38am UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/1 "2017-02-13T10:38:47Z")
Hello,
I had the elasticsearch cluster down because the nodes lost connectivity to eachother. After successfully recovering all the unassigned shards and got the cluster back in green status. I started to bring up the other nodes then set the number\_of\_replicas to 1. But all the replicas are unassigned. How can I make them assigned so that I have a replica of each shard.
```
{
"state" : "UNASSIGNED",
"primary" : false,
"node" : null,
"relocating_node" : null,
"shard" : 0,
"index" : "surrogate-keys-v1",
"version" : 5,
"unassigned_info" : {
"reason" : "REPLICA_ADDED",
"at" : "2017-02-13T10:28:11.068Z"
}
```
thanks in advance.
---
### Author:  [@msimos](https://discuss.elastic.co/u/msimos)
#### Post date: [February 13, 2017, 7:45pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/2 "2017-02-13T19:45:23Z")
What version are you using? We introduced a cluster allocation explain API in 5.x:
[https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-allocation-explain.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-allocation-explain.html)
What's the output of this command if you're on 5.x?
---
### Author:  [@zozo6015](https://discuss.elastic.co/u/zozo6015)
#### Post date: [February 13, 2017, 8:02pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/3 "2017-02-13T20:02:54Z")
> [@msimos](#):
>
> What version are you using? We introduced a cluster allocation explain API in 5.x:
It is elasticsearch 2.3.3
---
### Author:  [@msimos](https://discuss.elastic.co/u/msimos)
#### Post date: [February 13, 2017, 8:34pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/4 "2017-02-13T20:34:10Z")
You can use the reroute command and try and allocate the replica shard:
[https://www.elastic.co/guide/en/elasticsearch/reference/2.4/cluster-reroute.html](https://www.elastic.co/guide/en/elasticsearch/reference/2.4/cluster-reroute.html)
Look for anything in the output that says NO and this is the check that's failing.
---
### Author:  [@zozo6015](https://discuss.elastic.co/u/zozo6015)
#### Post date: [February 13, 2017, 8:48pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/5 "2017-02-13T20:48:49Z")
Very strange, I get this [NO(target node version [2.3.3] is older than source node version [2.3.4])]. However I've just checked all nodes has the same version of elasticsearch running.
---
### Author:  [@msimos](https://discuss.elastic.co/u/msimos)
#### Post date: [February 13, 2017, 9:16pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/6 "2017-02-13T21:16:20Z")
Hi,
Take a look at:
GET \_cat/nodes?h=name,ip,version
---
### Author:  [@zozo6015](https://discuss.elastic.co/u/zozo6015)
#### Post date: [February 13, 2017, 10:20pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/7 "2017-02-13T22:20:58Z")
Not sure why but one node was on version 2.3.4 while the other nodes where on 2.3.3. However the elasticsearch package install was 2.3.3 on all nodes. I have updated all the nodes to 2.3.4 and not everything is back on track.
Thanks for the help.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 13, 2017, 10:22pm UTC](https://discuss.elastic.co/t/replica-shard-does-not-get-assigned-to-nodes-after-cluster-recovery/74862/8 "2017-03-13T22:22:00Z")
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