# ERROR : "Authentication to realm file1 failed - Password authentication failed for elastic" after updgrading my kubernetes cluster

**URL:** <https://discuss.elastic.co/t/error-authentication-to-realm-file1-failed-password-authentication-failed-for-elastic-after-updgrading-my-kubernetes-cluster/341260>\
**Category:** Elastic Cloud on Kubernetes (ECK)\
**Created:** [August 21, 2023, 2:08pm UTC](https://discuss.elastic.co/t/error-authentication-to-realm-file1-failed-password-authentication-failed-for-elastic-after-updgrading-my-kubernetes-cluster/341260 "2023-08-21T14:08:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![khaled\_belgacem](https://avatars.discourse-cdn.com/v4/letter/k/45deac/32.png) [@khaled\_belgacem](https://discuss.elastic.co/u/khaled_belgacem)\
**Post date:** [August 21, 2023, 2:08pm UTC](https://discuss.elastic.co/t/error-authentication-to-realm-file1-failed-password-authentication-failed-for-elastic-after-updgrading-my-kubernetes-cluster/341260/1 "2023-08-21T14:08:49Z")

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hello everyone,

a few days ago my kubernetes cluster certificates expired (on prem) so i upgraded my kubernetes version to get them renewed, before the upgrade i was using ECK for about a year, had multiple elastic clusters , i was creating , removing , editing clusters ..ex everything ok, but now after the upgrade is done i'm faceing this error on my elastic nodes that prevent them from running normally:

```
"WARN", "message":"Authentication to realm file1 failed - Password authentication failed for elastic", "ecs.version": "1.2.0","service.name":"ES_ECS","event.dataset":"elasticsearch.server"

```

when i curl the nodes they respond normally, but all i get when i try to login from kibana is "kibana is not ready yet"

is there a config from eck that needs to be done with this new cluster?

Thank you

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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 18, 2023, 2:09pm UTC](https://discuss.elastic.co/t/error-authentication-to-realm-file1-failed-password-authentication-failed-for-elastic-after-updgrading-my-kubernetes-cluster/341260/2 "2023-09-18T14:09:17Z")

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