# ILM Shrink - All primary on same node fails
**URL:** https://discuss.elastic.co/t/ilm-shrink-all-primary-on-same-node-fails/264309
**Category:** Elasticsearch
**Tags:** ilm-index-lifecycle-management
**Created:** [February 15, 2021, 12:32pm UTC](https://discuss.elastic.co/t/ilm-shrink-all-primary-on-same-node-fails/264309 "2021-02-15T12:32:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@cwiechmann](https://discuss.elastic.co/u/cwiechmann)
#### Post date: [February 15, 2021, 12:32pm UTC](https://discuss.elastic.co/t/ilm-shrink-all-primary-on-same-node-fails/264309/1 "2021-02-15T12:32:28Z")
Hi All,
I'm using ILM-Policies in order to automate the Index-Lifecycle. As part of the Warm-Phase indices should be shrinked.
I'm currently running into the following problem reported by: `GET /_cluster/allocation/explain`:
```json
{
"decider" : "same_shard",
"decision" : "NO",
"explanation" : "a copy of this shard is already allocated to this node [[my-index-name-000002][4], node[1vFhysSMQEack-XZvmKkRg], [P], s[STARTED], a[id=1tF5F8jtTx-YNvcRYGSFOg]]"
}
```
The shrink action requires that all primary shards are assigned to the same node, but the same\_node decider prevents that all primary shards are assigned to this node, as one of the replicas is already running on this node.
This finally stops the automated ILM / Shrink process. Any idea how to improve that? The ultimate goal is to avoid manual intervention into that process.
Thanks!
Chris
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [February 17, 2021, 12:38am UTC](https://discuss.elastic.co/t/ilm-shrink-all-primary-on-same-node-fails/264309/2 "2021-02-17T00:38:17Z")
What's the output of `_cat/allocation/my-index-name-000002?v`?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 17, 2021, 12:39am UTC](https://discuss.elastic.co/t/ilm-shrink-all-primary-on-same-node-fails/264309/3 "2021-03-17T00:39:00Z")
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