Logstash issues with certificate

Elastic Stack Logstash
3
  1. What is the value of below settings in your Elasticsearch.yml:
xpack.security.transport.ssl.verification_mode:
xpack.security.http.ssl.verification_mode:
  1. What method have you used to create client certs for logstash and filebeat: Elasticsearch-certutil or openssl
  2. Have you signed them with an intermediate / root ?