Unable to install fleet server

[geetika_gopi]

Hi Everyone, I am trying to install fleet server on one of my elastic data nodes. However im facing this error. Could someone help me out please?

 ./elastic-agent install -f --fleet-server-es=https://xyz:9200 --fleet-server-service-token=AAEAA**** --fleet-server-es-ca=/etc/elasticsearch/elastic-certificates.p12
2021-08-25T06:35:13.238-0400  INFO  cmd/enroll_cmd.go:354       Generating self-signed certificate for Fleet Server
2021-08-25T06:35:14.815-0400  INFO  cmd/enroll_cmd.go:701       Fleet Server - Starting
2021-08-25T06:35:20.824-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:26.831-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:32.838-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:38.848-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:44.858-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:50.866-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:35:56.875-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:36:02.886-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:36:08.894-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:36:14.902-0400  INFO  cmd/enroll_cmd.go:706       Fleet Server - Starting
2021-08-25T06:36:19.909-0400  INFO  cmd/enroll_cmd.go:682       Fleet Server - Missed last check-in
2021-08-25T06:36:20.665-0400  INFO  cmd/enroll_cmd.go:414       Starting enrollment to URL: https://xyz:8220
Error: fail to enroll: fail to execute request to fleet-server: 1 error occurred:
   * missing enrollment api key

[blaker (Blake Rouse)]

You cannot use p12 format certificates, the issue is the CA is not working correctly because of that. Try converting the CA to PEM format and see if that fixes it.