Filebeat --> Logstash works but directly to Elasticsearch = nothing

Hi Exekias.
I have limited filebeat to only look at /var/log/auth.log and then restarted filebeat. Below is what logs filebeat outputs... I will enable some debugging on Elasticsearch. What level do you recommend?

2018-03-13T07:14:02.981+1100	INFO	[monitoring]	log/log.go:124	Non-zero metrics in the last 30s	{"monitoring": {"metrics": {"beat":{"cpu":{"system":{"ticks":10,"time":16},"total":{"ticks":10,"time":24,"value":10},"user":{"ticks":0,"time":8}},"info":{"ephemeral_id":"cce21048-8df6-4611-b1e6-ba9810bc4f83","uptime":{"ms":30038}},"memstats":{"gc_next":4473924,"memory_alloc":3050040,"memory_total":3050040,"rss":21831680}},"filebeat":{"events":{"added":1,"done":1},"harvester":{"open_files":0,"running":0}},"libbeat":{"config":{"module":{"running":0},"reloads":1},"output":{"type":"elasticsearch"},"pipeline":{"clients":1,"events":{"active":0,"filtered":1,"total":1}}},"registrar":{"states":{"current":74,"update":1},"writes":1},"system":{"cpu":{"cores":2},"load":{"1":0.01,"15":0.01,"5":0.04,"norm":{"1":0.005,"15":0.005,"5":0.02}}}}}}
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	prospector/prospector.go:124	Run prospector
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	log/prospector.go:147	Start next scan
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	log/prospector.go:361	Check file for harvesting: /var/log/auth.log
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	log/prospector.go:447	Update existing file for harvesting: /var/log/auth.log, offset: 44658
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	log/prospector.go:456	Resuming harvesting of file: /var/log/auth.log, offset: 44658, new size: 45001
2018-03-13T07:14:02.983+1100	DEBUG	[harvester]	log/harvester.go:442	Set previous offset for file: /var/log/auth.log. Offset: 44658 
2018-03-13T07:14:02.983+1100	DEBUG	[harvester]	log/harvester.go:433	Setting offset for file: /var/log/auth.log. Offset: 44658 
2018-03-13T07:14:02.983+1100	DEBUG	[harvester]	log/harvester.go:348	Update state: /var/log/auth.log, offset: 44658
2018-03-13T07:14:02.983+1100	DEBUG	[prospector]	log/prospector.go:168	Prospector states cleaned up. Before: 1, After: 1
2018-03-13T07:14:02.984+1100	INFO	log/harvester.go:216	Harvester started for file: /var/log/auth.log
2018-03-13T07:14:02.984+1100	DEBUG	[registrar]	registrar/registrar.go:200	Processing 1 events
2018-03-13T07:14:02.984+1100	DEBUG	[publish]	pipeline/processor.go:275	Publish event: {
  "@timestamp": "2018-03-12T20:14:02.984Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "doc",
    "version": "6.2.2"
  },
  "prospector": {
    "type": "log"
  },
  "beat": {
    "name": "els01",
    "hostname": "els01",
    "version": "6.2.2"
  },
  "source": "/var/log/auth.log",
  "offset": 44769,
  "message": "Mar 13 07:14:00 els01 sshd[11449]: Received disconnect from 192.168.10.101 port 59316:11: disconnected by user"
}
2018-03-13T07:14:02.984+1100	DEBUG	[publish]	pipeline/processor.go:275	Publish event: {
  "@timestamp": "2018-03-12T20:14:02.984Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "doc",
    "version": "6.2.2"
  },
  "source": "/var/log/auth.log",
  "offset": 44848,
  "prospector": {
    "type": "log"
  },
  "beat": {
    "name": "els01",
    "hostname": "els01",
    "version": "6.2.2"
  },
  "message": "Mar 13 07:14:00 els01 sshd[11449]: Disconnected from 192.168.10.101 port 59316"
}
2018-03-13T07:14:02.984+1100	DEBUG	[registrar]	registrar/registrar.go:193	Registrar states cleaned up. Before: 74, After: 74
2018-03-13T07:14:02.984+1100	DEBUG	[registrar]	registrar/registrar.go:228	Write registry file: /var/lib/filebeat/registry
2018-03-13T07:14:02.984+1100	DEBUG	[publish]	pipeline/processor.go:275	Publish event: {
  "@timestamp": "2018-03-12T20:14:02.984Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "doc",
    "version": "6.2.2"
  },
  "offset": 44936,
  "message": "Mar 13 07:14:00 els01 sshd[11449]: pam_unix(sshd:session): session closed for user root",
  "prospector": {
    "type": "log"
  },
  "beat": {
    "name": "els01",
    "hostname": "els01",
    "version": "6.2.2"
  },
  "source": "/var/log/auth.log"
}
2018-03-13T07:14:02.984+1100	DEBUG	[publish]	pipeline/processor.go:275	Publish event: {
  "@timestamp": "2018-03-12T20:14:02.984Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "doc",
    "version": "6.2.2"
  },
  "source": "/var/log/auth.log",
  "offset": 45001,
  "message": "Mar 13 07:14:00 els01 systemd-logind[1125]: Removed session 626.",
  "prospector": {
    "type": "log"
  },
  "beat": {
    "name": "els01",
    "hostname": "els01",
    "version": "6.2.2"
  }
}
2018-03-13T07:14:02.984+1100	DEBUG	[harvester]	log/log.go:85	End of file reached: /var/log/auth.log; Backoff now.
2018-03-13T07:14:02.985+1100	DEBUG	[registrar]	registrar/registrar.go:253	Registry file updated. 74 states written.
2018-03-13T07:14:03.984+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:666	ES Ping(url=http://kib02:9200)
2018-03-13T07:14:03.984+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:666	ES Ping(url=http://kib01:9200)
2018-03-13T07:14:03.984+1100	DEBUG	[harvester]	log/log.go:85	End of file reached: /var/log/auth.log; Backoff now.
2018-03-13T07:14:03.986+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:689	Ping status code: 200
2018-03-13T07:14:03.986+1100	INFO	elasticsearch/client.go:690	Connected to Elasticsearch version 6.2.2
2018-03-13T07:14:03.986+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:708	HEAD http://kib01:9200/_template/filebeat-6.2.2  <nil>
2018-03-13T07:14:03.987+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:689	Ping status code: 200
2018-03-13T07:14:03.987+1100	INFO	elasticsearch/client.go:690	Connected to Elasticsearch version 6.2.2
2018-03-13T07:14:03.988+1100	INFO	template/load.go:73	Template already exists and will not be overwritten.
2018-03-13T07:14:03.989+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:708	HEAD http://kib02:9200/_template/filebeat-6.2.2  <nil>
2018-03-13T07:14:03.990+1100	INFO	template/load.go:73	Template already exists and will not be overwritten.
2018-03-13T07:14:03.993+1100	DEBUG	[elasticsearch]	elasticsearch/client.go:303	PublishEvents: 4 events have been  published to elasticsearch in 4.040964ms.