# IllegalArgumentException\[Unknown client name \[gcs\]
**URL:** https://discuss.elastic.co/t/illegalargumentexception-unknown-client-name-gcs/307328
**Category:** Elasticsearch
**Tags:** snapshot-and-restore
**Created:** [June 15, 2022, 11:31pm UTC](https://discuss.elastic.co/t/illegalargumentexception-unknown-client-name-gcs/307328 "2022-06-15T23:31:05Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@alexus](https://discuss.elastic.co/u/alexus)
#### Post date: [June 15, 2022, 11:31pm UTC](https://discuss.elastic.co/t/illegalargumentexception-unknown-client-name-gcs/307328/1 "2022-06-15T23:31:05Z")
Hello World!
I'm trying to get started with [Getting started | Elasticsearch Plugins and Integrations [6.8] | Elastic](https://www.elastic.co/guide/en/elasticsearch/plugins/6.8/repository-gcs-usage.html) yet running into the following issue:
```auto
{
"error": {
"root_cause": [
{
"type": "repository_verification_exception",
"reason": "[gcs] [[13MGxSQmSH2Oyq7-AXcAZw, 'RemoteTransportException[[X][X.X.X.X:9300][internal:admin/repository/verify]]; nested: RepositoryException[[gcs] cannot create blob store]; nested: BlobStoreException[Unable to check if bucket [XYZ] exists]; nested: IllegalArgumentException[Unknown client name [gcs]. Existing client configs: default];']]"
}
],
"type": "repository_verification_exception",
"reason": "[gcs] [[13MGxSQmSH2Oyq7-AXcAZw, 'RemoteTransportException[[X][X.X.X.X:9300][internal:admin/repository/verify]]; nested: RepositoryException[[gcs] cannot create blob store]; nested: BlobStoreException[Unable to check if bucket [XYZ] exists]; nested: IllegalArgumentException[Unknown client name [gcs]. Existing client configs: default];']]"
},
"status": 500
}
```
My actual request:
```auto
PUT _snapshot/gcs
{
"type": "gcs",
"settings": {
"base_path": "6",
"bucket": "XYZ",
"client": "gcs"
}
}
```
I use "default" client to access to another GCP bucket (which works without any issues).
Please advise)
Thanks!
---
### Author:  [@alexus](https://discuss.elastic.co/u/alexus)
#### Post date: [June 16, 2022, 3:12am UTC](https://discuss.elastic.co/t/illegalargumentexception-unknown-client-name-gcs/307328/2 "2022-06-16T03:12:51Z")
.. It turns out to be one of the data nodes didn't get update properly, so it was missing that client info and that's why it i was getting that message..
way to check it:
```auto
[root@91d67f59c216 elasticsearch]# ./bin/elasticsearch-keystore list | grep ^gcs
gcs.client.default.credentials_file
gcs.client.gcs.credentials_file
[root@91d67f59c216 elasticsearch]#
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 14, 2022, 3:13am UTC](https://discuss.elastic.co/t/illegalargumentexception-unknown-client-name-gcs/307328/3 "2022-07-14T03:13:13Z")
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