# Cannot Install Fleet Server
**URL:** https://discuss.elastic.co/t/cannot-install-fleet-server/274764
**Category:** Endpoint Security
**Tags:** fleet
**Created:** [June 2, 2021, 2:09pm UTC](https://discuss.elastic.co/t/cannot-install-fleet-server/274764 "2021-06-02T14:09:25Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@francescouk](https://discuss.elastic.co/u/francescouk)
#### Post date: [June 2, 2021, 2:09pm UTC](https://discuss.elastic.co/t/cannot-install-fleet-server/274764/1 "2021-06-02T14:09:25Z")
Hello there,
Server info:
1 - I´m running ubuntu server 18.04
2 - Elk stack running on 7.13 version
I´m trying to add a fleet server on a self managed host but no luck. Following the kibana instructions this is what I´m getting so far:
1 - From kibana screen, I´m trying to add the fleet server
2 - Downloaded the elastic agent to the same elk server (DEB x64 version)
3 - Generated the token
4 - Followed the instructions for the commands to be used
Then, I receive a lot of X509 errors. So my question is, I´m doing something wrong?
```auto
root@elk:/opt/Elastic# ll
total 170876
drwxr-xr-x 2 root root 4096 Jun 2 13:49 ./
drwxr-xr-x 4 root root 4096 Jun 2 13:49 ../
-rw-r--r-- 1 root root 174967550 May 25 10:29 elastic-agent-7.13.0-amd64.deb
root@elk:/opt/Elastic# dpkg -i elastic-agent-7.13.0-amd64.deb
Selecting previously unselected package elastic-agent.
(Reading database ... 131027 files and directories currently installed.)
Preparing to unpack elastic-agent-7.13.0-amd64.deb ...
Unpacking elastic-agent (7.13.0) ...
Setting up elastic-agent (7.13.0) ...
Processing triggers for systemd (237-3ubuntu10.47) ...
Processing triggers for ureadahead (0.100.0-21) ...
root@elk:/opt/Elastic#
```
```auto
root@elk:/# elastic-agent version
Binary: 7.13.0 (build: 054e224d226b42a1dd7c72dcf48c3f18de452e22 at 2021-05-20 00:57:04 +0000 UTC)
Daemon: 7.13.0 (build: 054e224d226b42a1dd7c72dcf48c3f18de452e22 at 2021-05-20 00:57:04 +0000 UTC)
```
```auto
root@elk:/# sudo elastic-agent enroll -i -f --fleet-server-es=https://XX.XX.X.XX:9200 --fleet-server-service-token=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The Elastic Agent is currently in BETA and should not be used in production
2021-06-02T14:05:57.512Z INFO cmd/enroll_cmd.go:300 Generating self-signed certificate for Fleet Server
2021-06-02T14:05:59.181Z INFO cmd/enroll_cmd.go:610 Waiting for Elastic Agent to start Fleet Server
2021-06-02T14:06:01.187Z INFO cmd/enroll_cmd.go:643 Fleet Server - Starting
2021-06-02T14:06:02.190Z INFO cmd/enroll_cmd.go:643 Fleet Server - Error - x509: certificate signed by unknown authority
2021-06-02T14:06:08.202Z INFO cmd/enroll_cmd.go:648 Fleet Server - Error - x509: certificate signed by unknown authority
```
Can anyone help?
Thanks!
---
### Author:  [@nchaulet](https://discuss.elastic.co/u/nchaulet)
#### Post date: [June 2, 2021, 2:45pm UTC](https://discuss.elastic.co/t/cannot-install-fleet-server/274764/2 "2021-06-02T14:45:40Z")
Hi Francesco
From what I see you are hosting Elasticsearch with a custom CA, in this scenario you probably will have to add the argument
`--fleet-server-es-ca=`
---
### Author:  [@francescouk](https://discuss.elastic.co/u/francescouk)
#### Post date: [June 2, 2021, 5:17pm UTC](https://discuss.elastic.co/t/cannot-install-fleet-server/274764/3 "2021-06-02T17:17:29Z")
Hi there,
First I would like to thank you!!! You are the best!!!
Following your instructions, I could enroll without any issues the fleet server using the command bellow:
```auto
sudo elastic-agent enroll -f --fleet-server-es=https://XX.XX.X.XX:9200 --fleet-server-es-ca=cert.crt --fleet-server-service-token=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
```
And the expected results:
```auto
The Elastic Agent is currently in BETA and should not be used in production
2021-06-02T17:10:41.724Z INFO cmd/enroll_cmd.go:300 Generating self-signed certificate for Fleet Server
2021-06-02T17:10:44.020Z INFO cmd/enroll_cmd.go:643 Fleet Server - Stopped
2021-06-02T17:10:50.037Z INFO cmd/enroll_cmd.go:648 Fleet Server - Stopped
2021-06-02T17:10:56.055Z INFO cmd/enroll_cmd.go:648 Fleet Server - Stopped
2021-06-02T17:11:02.065Z INFO cmd/enroll_cmd.go:648 Fleet Server - Stopped
2021-06-02T17:11:08.080Z INFO cmd/enroll_cmd.go:648 Fleet Server - Stopped
2021-06-02T17:11:13.088Z INFO cmd/enroll_cmd.go:593 Waiting for Elastic Agent to start
2021-06-02T17:11:15.092Z INFO cmd/enroll_cmd.go:643 Fleet Server - Starting
2021-06-02T17:11:17.095Z INFO cmd/enroll_cmd.go:624 Fleet Server - Running on default policy with Fleet Server integration; missing config fleet.agent.id (expected during bootstrap process)
2021-06-02T17:11:19.657Z INFO cmd/enroll_cmd.go:203 Successfully triggered restart on running Elastic Agent.
Successfully enrolled the Elastic Agent.
```
Best regards,
Franthesco Ferrari
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 30, 2021, 5:18pm UTC](https://discuss.elastic.co/t/cannot-install-fleet-server/274764/4 "2021-06-30T17:18:18Z")
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