Prometheus之基于consul发现

一 配置Prometheus

1.1 配置prometheus.yml

~# cat 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.

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: "prometheus"
    static_configs:
      - targets: ["192.168.174.103:9090"]

  - job_name: 'k8s-masters'
    consul_sd_configs:                 #consul服务发现
    - server: "192.168.174.105:8500"
      tags:
      - "k8s-masters"
      refresh_interval: 2m 

  # All nodes
  - job_name: 'k8s-nodes'
    consul_sd_configs:                 #consul服务发现
    - server: "192.168.174.105:8500"
      tags:
      - "k8s-nodes"
      refresh_interval: 2m      

1.2 重启Prometheus服务

root@prometheus-01:~# systemctl restart prometheus      

1.3 验证Prometheus web界面

二 向consul注册节点信息

2.1 注册k8s-master-01信息

2.1.1 定义k8s-master信息

root@consul-01:~# cat k8s-master.json 
{
      "id": "node_exporter-k8s-master-01",
      "name": "k8s-master-01",
      "address": "192.168.174.100",
      "port": 9100,
      "tags": ["k8s-masters"],
      "checks": [{
        "http": "http://192.168.174.100:9100/metrics",
        "interval": "5s"
      }]
}      

2.1.2 注册k8s-master信息

root@consul-01:~# curl --request PUT --data @k8s-master.json http://192.168.174.103:8500/v1/agent/service/register      

2.1.3 查看consul web界面

2.1.4  验证Prometheus web界面信息

2.1.5 反注册k8s-master信息

root@consul-01:~# curl -X PUT  http://192.168.174.103:8500/v1/agent/service/deregister/node_exporter-k8s-master-01      

2.1.6 验证Prometheus web界面信息