0.环境准备

IP	Hostname	Docker	Grafana	Prometheus	node_exporter
10.180.249.245	manager.rancher	v19.03.8	v6.7.2	v2.17.1	v0.18.1
10.180.249.246	master.rancher	v19.03.8	-	-	v0.18.1
10.180.249.247	worker.rancher	v19.03.8	-	-	v0.18.1

Centos7.4-Rancher2.3.6-Docker19.03环境Ansible部署

1.下载镜像

manager.rancher 节点
docker pull grafana/grafana
docker pull prom/prometheus

manager.rancher、master.rancher、worker.rancher 节点
docker pull prom/node-exporter

2.启动 node_exporter

manager.rancher、master.rancher、worker.rancher 节点
docker run -d -p 9100:9100 -v “/proc:/host/proc:ro” -v “/sys:/host/sys:ro” -v “/:/rootfs:ro” prom/node-exporter
-d 后台运行
-p 主机端口:容器端口
-v 绑定卷，主机目录:容器目录

访问URL，可查看收集的系统信息
http://IP:9100/metrics

3.启动 Prometheus

manager.rancher 节点
新建目录prometheus，编辑配置文件prometheus.yml
mkdir -p /opt/prometheus/cfg/
cd /opt/prometheus/cfg/
vim prometheus.yml

# my global config
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:
      # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
    - targets: ['10.180.249.245:9090']
  
  - job_name: 'manager.rancher'
    static_configs:
    - targets: ['10.180.249.245:9100']
      labels:
        instance: sys1

  - job_name: 'master.rancher'
    static_configs:
    - targets: ['10.180.249.246:9100']
      labels:
        instance: sys2

  - job_name: 'worker.rancher'
    static_configs:
    - targets: ['10.180.249.247:9100']
      labels:
        instance: sys3