Unable to verify the first certificate - kibana/elasticsearch - kibana

Question

I'm trying to configure xpack for elasticsearch/kibana, I've activated the trial license for elasticsearch, configured xpack for kibana/elasticsearch and also I've generated ca.crt, node1-elk.crt, node1-elk.key and also kibana.key , kibana.crt and if I'm testing with curl towards the elasticsearch using the kibana user and password and also the ca.crt it's working like a charm, if I'm trying to access kibana from the GUI says that the "Server is not ready yet" and the logs show that " unable to verify the first certificate" :
{"type":"log","#timestamp":"2021-11-16T04:41:09-05:00","tags":["error","savedobjects-service"],"pid":13250,"message":"Unable to retrieve version information from Elasticsearch nodes. unable to verify the first certificate"}
My configuration:
kibana.yml
server.name: "my-kibana"
server.host: "0.0.0.0"
elasticsearch.hosts: ["https://0.0.0.0:9200"]
server.ssl.enabled: true
server.ssl.certificate: /etc/kibana/certs/kibana.crt
server.ssl.key: /etc/kibana/certs/kibana.key
server.ssl.certificateAuthorities: ["/etc/kibana/certs/ca.crt"]
elasticsearch.username: "kibana_system"
elasticsearch.password: "kibana"
elasticsearch.yml
node.name: node1
network.host: 0.0.0.0
discovery.seed_hosts: [ "0.0.0.0" ]
cluster.initial_master_nodes: ["node1"]
xpack.security.enabled: true
xpack.security.http.ssl.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.http.ssl.key: /etc/elasticsearch/certs/node1.key
xpack.security.http.ssl.certificate: /etc/elasticsearch/certs/node1.crt
xpack.security.http.ssl.certificate_authorities: [ "/etc/elasticsearch/certs/ca.crt" ]
xpack.security.transport.ssl.key: /etc/elasticsearch/certs/node1.key
xpack.security.transport.ssl.certificate: /etc/elasticsearch/certs/node1.crt
xpack.security.transport.ssl.certificate_authorities: [ "/etc/elasticsearch/certs/ca.crt" ]
curl testing:
[root#localhost kibana]# curl -XGET https://0.0.0.0:9200/_cat/nodes?v -u kibana_system:kibana --cacert /etc/elasticsearch/certs/ca.crt
ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
192.168.100.102 23 97 3 0.00 0.02 0.08 cdfhilmrstw * node1
I don't know what to do more here:
[root#localhost kibana]# curl -XGET https://0.0.0.0:9200/_license -u kibana_system:kibana --cacert /etc/elasticsearch/certs/ca.crt
{
"license" : {
"status" : "active",
"uid" : "872f0ad0-723e-43c8-b346-f43e2707d3de",
"type" : "trial",
"issue_date" : "2021-11-08T18:26:15.422Z",
"issue_date_in_millis" : 1636395975422,
"expiry_date" : "2021-12-08T18:26:15.422Z",
"expiry_date_in_millis" : 1638987975422,
"max_nodes" : 1000,
"issued_to" : "elasticsearch",
"issuer" : "elasticsearch",
"start_date_in_millis" : -1
}
}
Thank you for your help