# Error Installing Fleet Server Agent on Centralized Host
**URL:** https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310
**Category:** Elastic Agent
**Tags:** fleet
**Created:** [May 2, 2023, 3:08pm UTC](https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310 "2023-05-02T15:08:15Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@gmosornoza](https://discuss.elastic.co/u/gmosornoza)
#### Post date: [May 2, 2023, 3:08pm UTC](https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310/1 "2023-05-02T15:08:15Z")
Hi!
I'm facing an issue when installing Fleet Server as centralized host. I' running this command
```auto
sudo ./elastic-agent install \
--fleet-server-es=https://XXX.XXX.XXX.XXX:9200 \
--fleet-server-service-token=my_token \
--fleet-server-es-ca-trusted-fingerprint=my_fingerprint
```
But the console shows this error log
```auto
{"log.level":"info","@timestamp":"2023-05-02T09:51:47.218-0500","log.origin":{"file.name":"cmd/enroll_cmd.go","file.line":407},"message":"Generating self-signed certificate for Fleet Server","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2023-05-02T09:51:53.789-0500","log.origin":{"file.name":"cmd/enroll_cmd.go","file.line":753},"message":"Waiting for Elastic Agent to start","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2023-05-02T09:51:57.795-0500","log.origin":{"file.name":"cmd/enroll_cmd.go","file.line":803},"message":"Fleet Server - Error - failed to run subsystems: v7.15.0 data migration failed: failed to apply migration \"AgentMetadata\": migrate AgentMetadata UpdateByQuery failed: [503 Service Unavailable] {\"error\":{\"root_cause\":[],\"type\":\"search_phase_execution_exception\",\"reason\":\"\",\"phase\":\"query\",\"grouped\":true,\"failed_shards\":[],\"caused_by\":{\"type\":\"search_phase_execution_exception\",\"reason\":\"Search rejected due to missing shards [[.fleet-agents-7][0]]. Consider using `allow_partial_search_results` setting to bypass this error.\",\"phase\":\"query\",\"grouped\":true,\"failed_shards\":[]}},\"status\":503}","ecs.version":"1.6.0"}
Error: fleet-server failed: context canceled
```
I was looking for and tried several workarounds/tips from the internet without success.
Any ideas? Thank you in advance
---
### Author:  [@Julia\_Bardi](https://discuss.elastic.co/u/Julia_Bardi)
#### Post date: [May 8, 2023, 11:48am UTC](https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310/2 "2023-05-08T11:48:15Z")
Hi Guillermo, welcome to the community!
You could try deleting the `.fleet-agents` index (assuming it was not used before), you will need a superuser role for this that has access to it.
```auto
curl -sk -XPOST --user elastic:changeme -H 'content-type:application/json' \
https://ES_HOST:PORT/_security/role/fleet_superuser -d '
{
"indices": [
{
"names": [".fleet*"],
"privileges": ["all"],
"allow_restricted_indices": true
}
]
}'
curl -sk -XPOST --user elastic:changeme -H 'content-type:application/json' \
https://ES_HOST:PORT/_security/user/fleet_superuser -d '
{
"password": "password",
"roles": ["superuser", "fleet_superuser"]
}'
```
---
### Author:  [@gmosornoza](https://discuss.elastic.co/u/gmosornoza)
#### Post date: [May 9, 2023, 4:55pm UTC](https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310/3 "2023-05-09T16:55:03Z")
Thanks! It's working.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 6, 2023, 4:55pm UTC](https://discuss.elastic.co/t/error-installing-fleet-server-agent-on-centralized-host/332310/4 "2023-06-06T16:55:07Z")
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