# Can't install Fleet Server on Ubuntu instance

**URL:** <https://discuss.elastic.co/t/cant-install-fleet-server-on-ubuntu-instance/286736>\
**Category:** Beats\
**Tags:** elastic-stack-security, fleet\
**Created:** [October 14, 2021, 2:22pm UTC](https://discuss.elastic.co/t/cant-install-fleet-server-on-ubuntu-instance/286736 "2021-10-14T14:22:34Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Dmitriy\_Esin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dmitriy_esin/32/95725_2.png) [@Dmitriy\_Esin](https://discuss.elastic.co/u/Dmitriy_Esin)\
**Post date:** [October 14, 2021, 2:22pm UTC](https://discuss.elastic.co/t/cant-install-fleet-server-on-ubuntu-instance/286736/1 "2021-10-14T14:22:34Z")

</div>

Hi all!  
Unfortunately, I didn't find suitable topics!  
I have these configs:

1. Fleet settings  

2. Tried to enroll and install elastic agent two ways:

`sudo ./elastic-agent install -f --url=https://10.2.5.2:8220 --fleet-server-es=https://ELK_SRV:9200 --fleet-server-es-ca=/root/ca/elastic.pem --fleet-server-service-token=XXXXXXXXXXXXXXXXXX`

`sudo ./elastic-agent enroll -f --fleet-server-es=https://ELK_SRV:9200 --fleet-server-es-ca=/root/ca/elastic.pem --fleet-server-service-token=XXXXXXXXXXXXXXXXXX`

Anyway, I got this message:

```auto
Error: fail to enroll: fail to execute request to fleet-server: fail to decode enrollment response: context canceled

```

And it is infinitely updating of Elastic Agents with Fleet Server policies.

 ![Screenshot 2021-10-14 at 17.13.19](https://us1.discourse-cdn.com/elastic/original/3X/0/a/0ac3de3ef94cad42f08d252ac26737c6ec2a6b78.png)

Also, I tried to use the default way:

```auto
 sudo ./elastic-agent install --url=https://10.2.5.2:8220 \
 -f \
 --fleet-server-es=https://ELK_SRV:9200 \
 --fleet-server-service-token=XXXXXXXXXXXXXXXXXX \
 --fleet-server-policy=XXXXXXXXXXXXXXXXXX \
 --certificate-authorities=/root/ca/elastic.pem \
 --fleet-server-es-ca=/root/ca/elastic.pem \
 --fleet-server-cert=/root/ca/server.crt \
 --fleet-server-cert-key=/root/ca/server.key

```

But got  
`Error: fail to enroll: fail to execute request to fleet-server: x509: certificate signed by unknown authority`

The full error is below:

```auto
2021-10-14T14:17:16.533Z	INFO	cmd/enroll_cmd.go:701	Fleet Server - Starting
2021-10-14T14:17:22.548Z	INFO	cmd/enroll_cmd.go:706	Fleet Server - Starting
2021-10-14T14:17:28.557Z	INFO	cmd/enroll_cmd.go:706	Fleet Server - Starting
2021-10-14T14:17:34.567Z	INFO	cmd/enroll_cmd.go:706	Fleet Server - Starting
2021-10-14T14:17:40.576Z	INFO	cmd/enroll_cmd.go:706	Fleet Server - Starting
2021-10-14T14:17:46.589Z	INFO	cmd/enroll_cmd.go:706	Fleet Server - Starting
2021-10-14T14:17:49.595Z	INFO	cmd/enroll_cmd.go:682	Fleet Server - Running on policy with Fleet Server integration: 856f4eb0-122f-11ec-8308-176e4cb272f3; missing config fleet.agent.id (expected during bootstrap process)
2021-10-14T14:17:49.601Z	INFO	cmd/enroll_cmd.go:414	Starting enrollment to URL: https://10.2.5.2:8220/
Error: fail to enroll: fail to execute request to fleet-server: x509: certificate signed by unknown authority
Error: enroll command failed with exit code: 1

```

The server.crt and server.key were issued by the OpenSSL tool on the host where I'm trying to install the Fleet Server.

Thank you for any help!

---

<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:** [November 11, 2021, 4:22pm UTC](https://discuss.elastic.co/t/cant-install-fleet-server-on-ubuntu-instance/286736/2 "2021-11-11T16:22:41Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.