监控JVM报警规则

添加prometheus配置

[root@lucky prometheus]# vim prometheus.yml
  - job_name: 'jvm'
    scrape_interval: 10s
    metrics_path: /prometheus
    static_configs:
	- targets: ['10.0.0.105:7011']

添加告警规则

[root@lucky prometheus]# vim rule.yml
- name: jvm100
  rules:
  - alert: 堆空间使用超过90%
    expr: jvm_memory_used_bytes{job="jvm", area="heap"} / jvm_memory_max_bytes * 100 > 99.9
    for: 1m
    labels:
      severity: Critical
    annotations:
      summary: "JVM Instance {{ $labels.instance }} memory usage > 90%"
      description: "{{ $labels.instance }} of job {{ $labels.job }} has been in status [heap usage > 90%] for more than 1 minutes. current usage ({{ $value }}%)"