# ECK 8.7.1 Fleet agent error "precondition failed: x509: certificate is valid for..."

**URL:** <https://discuss.elastic.co/t/eck-8-7-1-fleet-agent-error-precondition-failed-x509-certificate-is-valid-for/332629>\
**Category:** Elastic Agent\
**Tags:** elastic-stack-monitoring\
**Created:** [May 5, 2023, 9:06am UTC](https://discuss.elastic.co/t/eck-8-7-1-fleet-agent-error-precondition-failed-x509-certificate-is-valid-for/332629 "2023-05-05T09:06:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![khteh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/khteh/32/147573_2.png) [@khteh](https://discuss.elastic.co/u/khteh)\
**Post date:** [May 5, 2023, 9:06am UTC](https://discuss.elastic.co/t/eck-8-7-1-fleet-agent-error-precondition-failed-x509-certificate-is-valid-for/332629/1 "2023-05-05T09:06:02Z")

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Following [Quickstart | Elastic Cloud on Kubernetes [2.7] | Elastic](https://www.elastic.co/guide/en/cloud-on-k8s/2.7/k8s-elastic-agent-fleet-quickstart.html) to install and run ECK fleet on my EKS but observe the following error in the agent logs:

```auto
[elastic-agent-agent-kgzn5] {"log.level":"error","@timestamp":"2023-05-05T09:01:29.069Z","message":"precondition failed: x509: certificate is valid for kyberlife-es-http.default.es.local, kyberlife-es-http, kyberlife-es-http.default.svc, kyberlife-es-http.default, kyberlife-es-internal-http.default.svc, kyberlife-es-internal-http.default, *.kyberlife-es-master.default.svc, *.kyberlife-es-data.default.svc, not kyberlife-es-internal-http","component":{"binary":"apm-server","dataset":"elastic_agent.apm_server","id":"apm-default","type":"apm"},"log":{"source":"apm-default"},"ecs.version":"1.6.0","log.logger":"beater","log.origin":{"file.line":64,"file.name":"beater/waitready.go"},"service.name":"apm-server","ecs.version":"1.6.0"}

```

What do I miss?

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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:** [June 2, 2023, 9:06am UTC](https://discuss.elastic.co/t/eck-8-7-1-fleet-agent-error-precondition-failed-x509-certificate-is-valid-for/332629/2 "2023-06-02T09:06:57Z")

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