cadvisor和Node Exporter都可以提供监控数据，前者重点关注与容器的状态，后者关注与节点的状态，这篇文章使用Prometheus Server + cadvisor + Node Exporter + Grafana介绍如何进行设定以进行监控。
版本信息本文验证使用的软件的版本信息如下所示：
软件 版本信息 Prometheus Server 2.15.1 cadvisor 0.33.0 Node Exporter 0.18.1 Grafana 6.5.2 事前准备 环境准备- Prometheus + cadvisor + Node Exporter docker-compose配置文件信息如下所示：
liumiaocn:nodecadvisor liumiao$ cat docker-compose.yml version: '2' services: prometheus: image: prom/prometheus:v2.15.1 privileged: true volumes: - ./prometheus.yml:/etc/prometheus/prometheus.yml command: - '--config.file=/etc/prometheus/prometheus.yml' ports: - '9090:9090' cadvisor: image: google/cadvisor:v0.33.0 container_name: cadvisor restart: unless-stopped ports: - '8080:8080' volumes: - /:/rootfs:ro - /var/run:/var/run:rw - /sys:/sys:ro - /var/lib/docker/:/var/lib/docker:ro node-exporter: image: prom/node-exporter:v0.18.1 ports: - '9100:9100' liumiaocn:nodecadvisor liumiao$
而Prometheus所用到的配置文件信息如下所示, 使用时需要将IP替换为本机的IP
liumiaocn:nodecadvisor liumiao$ cat prometheus.yml global: scrape_interval: 10s evaluation_interval: 10s scrape_configs: - job_name: 'node' static_configs: - targets: ['192.168.31.242:9100'] labels: group: 'node_exporter' - job_name: 'cadvisor' static_configs: - targets: ['192.168.31.242:8080'] labels: group: 'cadvisor_group' liumiaocn:nodecadvisor liumiao$
- 启动服务
liumiaocn:nodecadvisor liumiao$ docker-compose up -d Creating network "nodecadvisor_default" with the default driver Creating nodecadvisor_node-exporter_1 ... done Creating cadvisor ... done Creating nodecadvisor_prometheus_1 ... done liumiaocn:nodecadvisor liumiao$
- 服务确认
liumiaocn:nodecadvisor liumiao$ docker-compose ps
Name Command State Ports
-----------------------------------------------------------------------------------------------------
cadvisor /usr/bin/cadvisor -logtostderr Up (healthy) 0.0.0.0:8080->8080/tcp
nodecadvisor_node-exporter_1 /bin/node_exporter Up 0.0.0.0:9100->9100/tcp
nodecadvisor_prometheus_1 /bin/prometheus --config.f ... Up 0.0.0.0:9090->9090/tcp
liumiaocn:nodecadvisor liumiao$
- Grafana的准备 本文直接使用如下docker run命令进行启动，设定登录账号密码为：admin/liumiaocn
执行命令：docker run -p 3000:3000 -e “GF_SECURITY_ADMIN_PASSWORD=liumiaocn” --name=grafana -d grafana/grafana:6.5.2
- 结果确认
Prometheus一旦和cadvisor、Node Exporter能够正常连通，可以在/targets下确认到UP的正常状态
也可以确认连接的cadvisor的指标详细信息
通过8080端口也可以看到cadvisor的监控信息
- https://grafana.com/grafana/dashboards/10566
点击Download JSON按钮进行下载
点击左侧菜单中的Import菜单项
点击Upload JSON按钮选中刚刚下载的模版文件
选择已经配置的Prometheus的数据源，配置方法可参看：
-
https://blog.csdn.net/liumiaocn/article/details/103804736
只要Prometheus和Node Exporter能够正常动作，此时Grafana的模版就已经可以使用了
https://prometheus.io/docs/guides/cadvisor/
