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diff --git a/collectors/python.d.plugin/springboot/README.md b/collectors/python.d.plugin/springboot/README.md new file mode 100644 index 000000000..008436a4f --- /dev/null +++ b/collectors/python.d.plugin/springboot/README.md @@ -0,0 +1,129 @@ +# springboot + +This module will monitor one or more Java Spring-boot applications depending on configuration. + +It produces following charts: + +1. **Response Codes** in requests/s + * 1xx + * 2xx + * 3xx + * 4xx + * 5xx + * others + +2. **Threads** + * daemon + * total + +3. **GC Time** in milliseconds and **GC Operations** in operations/s + * Copy + * MarkSweep + * ... + +4. **Heap Mmeory Usage** in KB + * used + * committed + +### configuration + +Please see the [Monitoring Java Spring Boot Applications](https://github.com/netdata/netdata/wiki/Monitoring-Java-Spring-Boot-Applications) page for detailed info about module configuration. + +--- + +# Monitoring Java Spring Boot Applications + +Netdata can be used to monitor running Java [Spring Boot](https://spring.io/) applications that expose their metrics with the use of the **Spring Boot Actuator** included in Spring Boot library. + +The Spring Boot Actuator exposes these metrics over HTTP and is very easy to use: +* add `org.springframework.boot:spring-boot-starter-actuator` to your application dependencies +* set `endpoints.metrics.sensitive=false` in your `application.properties` + +You can create custom Metrics by add and inject a PublicMetrics in your application. +This is a example to add custom metrics: +```java +package com.example; + +import org.springframework.boot.actuate.endpoint.PublicMetrics; +import org.springframework.boot.actuate.metrics.Metric; +import org.springframework.stereotype.Service; + +import java.lang.management.ManagementFactory; +import java.lang.management.MemoryPoolMXBean; +import java.util.ArrayList; +import java.util.Collection; + +@Service +public class HeapPoolMetrics implements PublicMetrics { + + private static final String PREFIX = "mempool."; + private static final String KEY_EDEN = PREFIX + "eden"; + private static final String KEY_SURVIVOR = PREFIX + "survivor"; + private static final String KEY_TENURED = PREFIX + "tenured"; + + @Override + public Collection<Metric<?>> metrics() { + Collection<Metric<?>> result = new ArrayList<>(4); + for (MemoryPoolMXBean mem : ManagementFactory.getMemoryPoolMXBeans()) { + String poolName = mem.getName(); + String name = null; + if (poolName.indexOf("Eden Space") != -1) { + name = KEY_EDEN; + } else if (poolName.indexOf("Survivor Space") != -1) { + name = KEY_SURVIVOR; + } else if (poolName.indexOf("Tenured Gen") != -1 || poolName.indexOf("Old Gen") != -1) { + name = KEY_TENURED; + } + + if (name != null) { + result.add(newMemoryMetric(name, mem.getUsage().getMax())); + result.add(newMemoryMetric(name + ".init", mem.getUsage().getInit())); + result.add(newMemoryMetric(name + ".committed", mem.getUsage().getCommitted())); + result.add(newMemoryMetric(name + ".used", mem.getUsage().getUsed())); + } + } + return result; + } + + private Metric<Long> newMemoryMetric(String name, long bytes) { + return new Metric<>(name, bytes / 1024); + } +} +``` + +Please refer [Spring Boot Actuator: Production-ready features](https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready.html) and [81. Actuator - Part IX. ‘How-to’ guides](https://docs.spring.io/spring-boot/docs/current/reference/html/howto-actuator.html) for more information. + +## Using netdata springboot module + +The springboot module is enabled by default. It looks up `http://localhost:8080/metrics` and `http://127.0.0.1:8080/metrics` to detect Spring Boot application by default. You can change it by editing `/etc/netdata/python.d/springboot.conf` (to edit it on your system run `/etc/netdata/edit-config python.d/springboot.conf`). + +This module defines some common charts, and you can add custom charts by change the configurations. + +The configuration format is like: +```yaml +<id>: + name: '<name>' + url: '<metrics endpoint>' # ex. http://localhost:8080/metrics + user: '<username>' # optional + pass: '<password>' # optional + defaults: + [<chart-id>]: true|false + extras: + - id: '<chart-id>' + options: + title: '***' + units: '***' + family: '***' + context: 'springboot.***' + charttype: 'stacked' | 'area' | 'line' + lines: + - { dimension: 'myapp_ok', name: 'ok', algorithm: 'absolute', multiplier: 1, divisor: 1} # it shows "myapp.ok" metrics + - { dimension: 'myapp_ng', name: 'ng', algorithm: 'absolute', multiplier: 1, divisor: 1} # it shows "myapp.ng" metrics +``` + +By default, it creates `response_code`, `threads`, `gc_time`, `gc_ope` abd `heap` charts. +You can disable the default charts by set `defaults.<chart-id>: false`. + +The dimension name of extras charts should replace `.` to `_`. + +Please check [springboot.conf](springboot.conf) for more examples.
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