# Unable to create client connection to Elasticsearch. Error: TransportError(401, u'security\_exception', u'missing authentication credentials for REST request \[/\]')

**URL:** https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740
**Category:** Elasticsearch
**Tags:** elastic-stack-security
**Created:** [August 26, 2019, 9:50am UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740 "2019-08-26T09:50:27Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![irobot678](https://avatars.discourse-cdn.com/v4/letter/i/54ee81/32.png) [@irobot678](https://discuss.elastic.co/u/irobot678)
#### Post date: [August 26, 2019, 9:50am UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740/1 "2019-08-26T09:50:27Z")

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Hi,

i am using elk stack with version 7.1.0 with x-pack  
and i want to snapshot the index using curator and when im executing the curator im getting the following errors :

```
ig ./curator.yml --dry-run
2019-08-26 15:02:25,092 INFO Preparing Action ID: 1, "snapshot"
Traceback (most recent call last):
  File "/home/vagrant/.local/lib/python2.7/site-packages/cx_Freeze/initscripts/Console.py", line 27, in <module>
  File "run_curator.py", line 8, in <module>
  File "/tmp/curator/curator-4.1.2/curator/curator.py", line 5, in main
  File "/home/vagrant/.local/lib/python2.7/site-packages/click/core.py", line 716, in __call__
  File "/home/vagrant/.local/lib/python2.7/site-packages/click/core.py", line 696, in main
  File "/home/vagrant/.local/lib/python2.7/site-packages/click/core.py", line 889, in invoke
  File "/home/vagrant/.local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
  File "/tmp/curator/curator-4.1.2/curator/cli.py", line 165, in cli
  File "/tmp/curator/curator-4.1.2/curator/utils.py", line 587, in get_client
elasticsearch.exceptions.ElasticsearchException: Unable to create client connection to Elasticsearch. Error: TransportError(401, u'security_exception', u'missing authentication credentials for REST request [/]')

```

command used :

> sudo curator ./snapshots.yml --config ./curator.yml --dry-run

and i also tried passing the credentials

> sudo curator ./snapshots.yml --config ./curator.yml -u vamsi:qolsys --dry-run

errors :

> Error: no such option: -u

Please help me solve it.

---

<div class="post-metadata">

### Author: ![ikakavas](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ikakavas/32/34430_2.png) [@ikakavas](https://discuss.elastic.co/u/ikakavas)
#### Post date: [August 26, 2019, 9:55am UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740/2 "2019-08-26T09:55:12Z")

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Please see: [https://www.elastic.co/guide/en/elasticsearch/client/curator/5.8/configfile.html#http\_auth](https://www.elastic.co/guide/en/elasticsearch/client/curator/5.8/configfile.html#http_auth)

---

<div class="post-metadata">

### Author: ![irobot678](https://avatars.discourse-cdn.com/v4/letter/i/54ee81/32.png) [@irobot678](https://discuss.elastic.co/u/irobot678)
#### Post date: [August 26, 2019, 12:29pm UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740/3 "2019-08-26T12:29:00Z")

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Thanks @ikakavas for the reply,

i have made the changes in curator.yml accordingly  
but i'm getting the following version incompactable error.

Please help me solve it.

Error:

```
 File "/tmp/curator/curator-4.1.2/curator/utils.py", line 587, in get_client
elasticsearch.exceptions.ElasticsearchException: Unable to create client connection to Elasticsearch. Error: Elasticsearch version 7.1.1 incompatible with this version of Curator (7.1.1)
```

---

<div class="post-metadata">

### Author: ![theuntergeek](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/theuntergeek/32/44961_2.png) [@theuntergeek](https://discuss.elastic.co/u/theuntergeek)
#### Post date: [August 26, 2019, 1:28pm UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740/4 "2019-08-26T13:28:04Z")

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> [@irobot678](#):
>
> ```auto
> Error: Elasticsearch version 7.1.1 incompatible with this version of Curator (7.1.1)
> 
> ```

You hit a _very_ old Curator bug with that one. I see this from your first report:

> [@irobot678](#):
>
> `curator-4.1.2`

Upgrade Curator to version 5.7.6, and then report back.

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 23, 2019, 1:28pm UTC](https://discuss.elastic.co/t/unable-to-create-client-connection-to-elasticsearch-error-transporterror-401-usecurity-exception-umissing-authentication-credentials-for-rest-request/196740/5 "2019-09-23T13:28:33Z")

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