hello team!
I'm building a elastic cluster and i'm having a trouble to bring kibana online, it looks like it cannot connect to the elasticsearch service, follow the logs:
{"type":"log","@timestamp":"2020-05-15T19:21:06Z","tags":["fatal","root"],"pid":580,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:22:18Z","tags":["fatal","root"],"pid":2208,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:23:25Z","tags":["fatal","root"],"pid":8068,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:24:33Z","tags":["fatal","root"],"pid":6632,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:25:34Z","tags":["fatal","root"],"pid":7416,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:26:26Z","tags":["fatal","root"],"pid":6272,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:27:26Z","tags":["fatal","root"],"pid":8104,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
{"type":"log","@timestamp":"2020-05-15T19:28:15Z","tags":["fatal","root"],"pid":7680,"message":"{ Error: listen EACCES: permission denied my_server_ip:80\n at Server.setupListenHandle [as _listen2] (net.js:1263:19)\n at listenInCluster (net.js:1328:12)\n at doListen (net.js:1461:7)\n at process._tickCallback (internal/process/next_tick.js:63:19)\n code: 'EACCES',\n errno: 'EACCES',\n syscall: 'listen',\n address: 'my_server_ip',\n port: 80 }"}
kibana.yml:
server.port: 80
server.host: my_server_ip
server.name: my_server_name
elasticsearch.hosts: http://my_server_ip:9200
elasticsearch.preserveHost: true
logging.dest: D:\ELK\Kibana\kibana-7.6.2-windows-x86_64\log\kibana.log
logging.quiet: true
elastic.yml:
bootstrap.memory_lock: true
cluster.name: DCE_ELK_ENV
http.port: 9200
http.host: my_server_name
node.data: true
node.ingest: false
node.master: true
node.max_local_storage_nodes: 1
node.name: my_server_name
path.data: D:\Elastic\data
path.logs: D:\Elastic\logs
transport.tcp.port: 9300
xpack.license.self_generated.type: basic
xpack.security.enabled: false
network.host: my_server_ip
booth kibana and elastic are in the same server, I've omitted the ip and server name for security reasons here 
elastic is accessible via CURL:
{
"name" : "my_server_name",
"cluster_name" : "DCE_ELK_ENV",
"cluster_uuid" : "cEyI7wSpQG6Duzd2quuw8A",
"version" : {
"number" : "7.6.2",
"build_flavor" : "unknown",
"build_type" : "unknown",
"build_hash" : "ef48eb35cf30adf4db14086e8aabd07ef6fb113f",
"build_date" : "2020-03-26T06:34:37.794943Z",
"build_snapshot" : false,
"lucene_version" : "8.4.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}