Logstash API Monitor

Logstash 5.0 starts with an API that outputs the metrics and status monitoring of its own processes.

Official documents:
Https://www.elastic.co/guide/en/logstash/current/monitoring-logstash.html#monitoring

Node Info API
Https://www.elastic.co/guide/en/logstash/current/node-info-api.html
Pipeline Gets pipeline-specific information and settings.
OS Gets Node-level info about the OS.
JVM Gets Node-level JVM info, including info about threads.

Curl-s ' Localhost:9600/_node/pipeline '? pretty
Curl-s ' Localhost:9600/_node/os '? pretty
Curl-s ' LOCALHOST:9600/_NODE/JVM '? pretty

Plugins Info API
Https://www.elastic.co/guide/en/logstash/current/plugins-api.html
Curl-s ' Localhost:9600/_node/plugins?pretty '

Node Stats API
Https://www.elastic.co/guide/en/logstash/current/node-stats-api.html

JVM Gets JVM stats, including stats about threads, memory usage, garbage collectors, and uptime.
Process Gets process stats, including stats about file descriptors, memory consumption, and CPU usage.
Pipeline Gets runtime stats about the Logstash pipeline.
Reloads Gets runtime stats about config reload successes and failures.
OS Gets runtime stats about cgroups when Logstash was running in a container.

Curl-s Localhost:9600/_node/stats/jvm?pretty
Curl-s Localhost:9600/_node/stats/process?pretty
Curl-s Localhost:9600/_node/stats/pipeline?pretty
Curl-s Localhost:9600/_node/stats/reloads?pretty
Curl-s Localhost:9600/_node/stats/os?pretty

Hot Threads API
Https://www.elastic.co/guide/en/logstash/current/hot-threads-api.html
The parameters allowed is:
Threads The number of hot threads to return. The default is 3.
Human If true, returns plain text instead of JSON format. The default is False.
ignore_idle_threads If true, does not return idle threads. The default is true.

Curl-s Localhost:9600/_node/hot_threads?pretty
Curl-s Localhost:9600/_node/hot_threads?human=true&threads=1