SSL Error on ElasticSearch Cluster from kibana

Hi!
I am setup to cluster OpenDistro Plugin.
In 1-st node , start demo script and setup simple configure on other nodes.

It is Elastic conf.

`cluster.name: ELK-Cluster
node.name: elk_node1
path.data: /elk-data
path.logs: /var/log/elasticsearch
bootstrap.memory_lock: true
network.host: 0.0.0.0
#http.host: 0.0.0.0
#http.port: 9200
node.master: true
node.data: true
cluster.initial_master_nodes: ["elk_node1", "elk_node2", "elk_node3"]
discovery.seed_hosts: ["192.168.11.85", "192.168.11.86","192.168.11.85",]
discovery.zen.minimum_master_nodes: 2`

  On my kibana conf:

server.port: 5601
server.host: "192.168.11.87"
server.name: "Kibana"
elasticsearch.hosts: ["https://192.168.11.85:9200" , "https://192.168.11.86:9200", "https://192.168.11.88:9200" ]
elasticsearch.ssl.certificateAuthorities: ["/etc/kibana/root-ca.pem"]  #this cert from elk-cluster
elasticsearch.ssl.verificationMode: certificate
monitoring.ui.enabled: true
xpack.security.enabled: false
elasticsearch.username: admin
elasticsearch.password: admin
elasticsearch.requestHeadersWhitelist: ["securitytenant","Authorization"]
opendistro_security.multitenancy.enabled: true
opendistro_security.multitenancy.tenants.preferred: ["Private", "Global"]
opendistro_security.readonly_mode.roles: ["kibana_read_only"]

When I start kibana,

kibana.log
Unable to revive connection
No living connection

 elk-cluster.log
io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: