Logstash Instance Missing from Kibana Monitoring

Elastic Stack Logstash
11

OK, so you do not have monitoring enabled. What do you get for

grep xpack.monitoring.enabled /etc/logstash/logstash.yml

The markdown I used was three backticks on a line before and after the text. Thus

```
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.enabled: false
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.hosts: ["http://localhost:9200"]
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.interval: 10000000000
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.timeout_interval: 600000000000
[2019-06-24T15:39:30,747][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.username: "logstash_system"
```

will appear as

[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.enabled: false
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.hosts: ["http://localhost:9200"]
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.interval: 10000000000
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.timeout_interval: 600000000000
[2019-06-24T15:39:30,747][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.username: "logstash_system"

If you precede a line with 4 spaces

    [2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.enabled: false
    [2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.hosts: ["http://localhost:9200"]
    [2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.interval: 10000000000
    [2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.timeout_interval: 600000000000
    [2019-06-24T15:39:30,747][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.username: "logstash_system"

Then it is rendered as

[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.enabled: false
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.hosts: ["http://localhost:9200"]
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.interval: 10000000000
[2019-06-24T15:39:30,746][DEBUG][logstash.runner          ] xpack.monitoring.collection.timeout_interval: 600000000000
[2019-06-24T15:39:30,747][DEBUG][logstash.runner          ] xpack.monitoring.elasticsearch.username: "logstash_system"

The effect of these on single lines is slightly different.