一、安装监控插件elasticsearch_exporter

wget https://github.com/prometheus-community/elasticsearch_exporter/releases/download/v1.2.1/elasticsearch_exporter-1.2.1.linux-386.tar.gz
tar xf  elasticsearch_exporter-1.2.1.linux-386.tar.gz
mv elasticsearch_exporter-1.2.1.linux-386  /opt/elasticsearch_exporter


(elasticsearch_exporter的下载地址如下：https://github.com/prometheus-community/elasticsearch_exporter/releases）

启动成功后，可以访问?curl http://ip/metrics ，看抓取的信息如下：

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二、Prometheus server端的相关配置

1、修改主配置文件prometheus.yml 并添加es相关监控的配置
vim prometheus.yml 
global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
  - static_configs:
    - targets:
      - localhost:9093

# Load rules once and periodically evaluate them according to the global ‘evaluation_interval‘.
rule_files:
  - "rules/*rules.yml"
scrape_configs:
  - job_name: ‘elasticsearch‘
    scrape_interval: 15s
    metrics_path: ‘/metrics‘
    file_sd_configs:
    - files:
      - targets/elasticsearch/*.json
      refresh_interval: 1m

2、添加ES相关对象的监控文件
mkdir targets/elasticsearch
cat targets/elasticsearch/elasticsearch.json 
[
{
  "targets": [
    "10.32.54.172:9112"
  ],
  "labels": {
    "cluster": "es-testnet-riskcontrol"
  }
}
]

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三、elasticsearch_exporter客户端启动和配置

cat << EOF > /etc/systemd/system/elasticsearch_exporter.service
[Unit]
Description=Prometheus elasticsearch_exporter
After=local-fs.target network-online.target network.target
Wants=local-fs.target network-online.target network.target

[Service]
User=root
Nice=10
ExecStart = /opt/elasticsearch_exporter/elasticsearch_exporter --es.all --es.indices --es.cluster_settings --es.indices_settings --es.shards --es.snapshots  --web.listen-address :9111 --es.uri http://ip:9200
ExecStop= /usr/bin/killall elasticsearch_exporter

[Install]
WantedBy=default.target
EOF

es严重需要： https://user:password@IP:9200
systemctl daemon-reload
systemctl enable elasticsearch_exporter.service
systemctl start  elasticsearch_exporter.service

四、通过grafana通过dashboard

1、依次通过grafana导入https://grafana.com/grafana/dashboards/2322。dashboard---manager---import---import via grafana.com选择2322---load即可
2、稍等两分钟既可以查看相关的图形。

参考如下：

https://grafana.com/grafana/dashboards/2322

https://github.com/prometheus-community/elasticsearch_exporter/releases

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Prometheus监控Elasticsearch