安裝監控外掛

專案地址：https://github.com/justwatchcom/elasticsearch_exporter
外掛下載地址：https://github.com/justwatchcom/elasticsearch_exporter/releases/download/v1.0.4rc1/elasticsearch_exporter-1.0.4rc1.linux-amd64.tar.gz
簡單介紹下安裝：

[[email protected] ~]$ tar zxvf elasticsearch_exporter-1.0.4rc1.linux-amd64.tar.gz
[
 
[email protected] ~]$ cd elasticsearch_exporter 
[[email protected] ~]$ cp elasticsearch_exporter  /usr/local/bin
[[email protected] ~]$ /usr/local/bin/elasticsearch_exporter --web.listen-address "0.0.0.0:9109"  --es.uri http://elastic:[email protected]:9201
[[email protected] ~]$ curl localhost:9109/metrics
 

配置prometheus

- job_name: 'elasticsearch'
  file_sd_configs:
  - refresh_interval: 1m
    files:
    - ./conf.d/es*.json

配置consul自動發現請參考：我的另一篇部落格

指標解析

參考：
https://grafana.com/dashboards/2322
https://yq.aliyun.com/articles/548354
https://blog.csdn.net/u013613428/article/details/78179430

預警rules

groups:
- name: elasticsearchStatsAlert
  rules:
  - alert: Elastic_Cluster_Health_RED
    expr: elasticsearch_cluster_health_status{color="red"}==1 
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }}: not all primary and replica shards are allocated in elasticsearch cluster {{ $labels.cluster }}"
      description: "Instance {{ $labels.instance }}: not all primary and replica shards are allocated in elasticsearch cluster {{ $labels.cluster }}."
  - alert: Elastic_Cluster_Health_Yellow 
    expr: elasticsearch_cluster_health_status{color="yellow"}==1
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " Instance {{ $labels.instance }}: not all primary and replica shards are allocated in elasticsearch cluster {{ $labels.cluster }}" 
      description: "Instance {{ $labels.instance }}: not all primary and replica shards are allocated in elasticsearch cluster {{ $labels.cluster }}."
  - alert: Elasticsearch_JVM_Heap_Too_High
    expr: elasticsearch_jvm_memory_used_bytes{area="heap"} / elasticsearch_jvm_memory_max_bytes{area="heap"} > 0.8
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "ElasticSearch node {{ $labels.instance }} heap usage is high "
      description: "The heap in {{ $labels.instance }} is over 80% for 15m."
  - alert: Elasticsearch_health_up
    expr: elasticsearch_cluster_health_up !=1
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " ElasticSearch node: {{ $labels.instance }} last scrape of the ElasticSearch cluster health failed"                               
      description: "ElasticSearch node: {{ $labels.instance }} last scrape of the ElasticSearch cluster health failed"
  - alert: Elasticsearch_Too_Few_Nodes_Running
    expr: elasticsearch_cluster_health_number_of_nodes < 12
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "There are only {{$value}} < 12 ElasticSearch nodes running "                               
      description: "lasticSearch running on less than 12 nodes(total 14)"
  - alert: Elasticsearch_Count_of_JVM_GC_Runs
    expr: rate(elasticsearch_jvm_gc_collection_seconds_count{}[5m])>5
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "ElasticSearch node {{ $labels.instance }}: Count of JVM GC runs > 5 per sec and has a value of {{ $value }} "
      description: "ElasticSearch node {{ $labels.instance }}: Count of JVM GC runs > 5 per sec and has a value of {{ $value }}"
  - alert: Elasticsearch_GC_Run_Time
    expr: rate(elasticsearch_jvm_gc_collection_seconds_sum[5m])>0.3
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " ElasticSearch node {{ $labels.instance }}: GC run time in seconds > 0.3 sec and has a value of {{ $value }}"
      description: "ElasticSearch node {{ $labels.instance }}: GC run time in seconds > 0.3 sec and has a value of {{ $value }}"
  - alert: Elasticsearch_json_parse_failures
    expr: elasticsearch_cluster_health_json_parse_failures>0
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " ElasticSearch node {{ $labels.instance }}: json parse failures > 0 and has a value of {{ $value }}"
      description: "ElasticSearch node {{ $labels.instance }}: json parse failures > 0 and has a value of {{ $value }}"
  - alert: Elasticsearch_breakers_tripped
    expr: rate(elasticsearch_breakers_tripped{}[5m])>0
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " ElasticSearch node {{ $labels.instance }}: breakers tripped > 0 and has a value of {{ $value }}"
      description: "ElasticSearch node {{ $labels.instance }}: breakers tripped > 0 and has a value of {{ $value }}"
  - alert: Elasticsearch_health_timed_out
    expr: elasticsearch_cluster_health_timed_out>0
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: " ElasticSearch node {{ $labels.instance }}: Number of cluster health checks timed out > 0 and has a value of {{ $value }}"
      description: "ElasticSearch node {{ $labels.instance }}: Number of cluster health checks timed out > 0 and has a value of {{ $value }}"

prometheus 配置：

rule_files:
  - /usr/local/prometheus/rules/es*.rules

Grafana 畫圖

模版：連結:https://pan.baidu.com/s/1mAtVhko18gD4LxdSkuCGEg 密碼:3mtd

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