Docker(七) Docker监控平台

监控维度

• 主机维度
  • 主机cpu
  • 主机内存
  • 主机本地镜像情况
  • 主机上容器运行情况
• 镜像维度
  • 镜像的基本信息
  • 镜像与容器的基本信息
  • 镜像构建的历史信息(层级依赖信息)
• 容器维度
  • 容器基本信息
  • 容器的运行状态信息
  • 容器用量信息

docker监控命令

docker ps
docker images
docker stats
# 注意：docker stats只有选择libcontainer作为执行驱动时才可以使用
# docker stats时常会有一些限制,使用stats api会显示更多的信息
echo -e "GET /containers/tools/stats HTTP/1.0\r\n" | nc -U /var/run/docker.sock
docker inspac
docker top
docker port

cAdvisor

google cAdvisor的一些特性：

• 拥有远程管理的丰富api支持api docs
• 有web ui管理界面
• 是google除支持k8s外的另一个项目
• 监控信息输出到influxdb数据库进行存储和读取,支持很多其他的插件
• 支持将容器的统计信息一prometheus标准指标形式输出并存储在/metrics HTTP服务端点

sudo docker run   --volume=/:/rootfs:ro   --volume=/var/run:/var/run:rw   --volume=/sys:/sys:ro   --volume=/var/lib/docker/:/var/lib/docker:ro   --volume=/dev/disk/:/dev/disk:ro   --publish=8080:8080   --detach=true   --name=cadvisor   google/cadvisor:latest

DataDog

SoundCloud的Promtheus

Promtheus是一个开源服务监控系统与时间序列数据库,结合exporter使用,exporter是基于prometheus开放的Http接口二次开发用来抓取应用程序的指标数据

Global setting

network configure

docker network create --driver bridge --subnet 10.0.0.0/24 --gateway 10.0.0.1 monitor

Grafana configure

Grafana Template

# pull grafana image
docker pull grafana/grafana

grafana目录

• 配置文件/etc/grafana/
• sqlite3 database file /var/lib/grafana

grafana在docker中的环境变量

• GF_SERVER_ROOT_URL=http://grafana.server.name 指定grafana的访问路径
• GF_SECURITY_ADMIN_PASSWORD=secret 指定grafana的登录密码
• GF_INSTALL_PLUGINS=grafana-clock-panel,grafana-simple-json-datasource 指定安装插件的变量

构建持久性存储

docker run  -d  -v /var/lib/grafana  --name grafana-storage  busybox:latest

启动容器

# 启动Grafana容器
docker run  -d  -p 3000:3000  --name grafana  --volumes-from grafana-storage  -e "GF_INSTALL_PLUGINS=grafana-clock-panel,grafana-simple-json-datasource"  -e "GF_SERVER_ROOT_URL=http://10.0.0.10:3000"  -e "GF_SECURITY_ADMIN_PASSWORD=marion"  --network monitor  --ip 10.0.0.10  --restart always  grafana/grafana

# 查看配置文件以及数据目录的挂载位置
docker inspect grafana

cAdvisor

sudo docker run   --volume=/:/rootfs:ro   --volume=/var/run:/var/run:rw   --volume=/sys:/sys:ro   --volume=/var/lib/docker/:/var/lib/docker:ro   --volume=/dev/disk/:/dev/disk:ro   --detach=true   --name=cadvisor   --network monitor   --ip 10.0.0.11   google/cadvisor:latest

Deploy by docker-compose yaml file

docker-compose.yml

prometheus:
    image: prom/prometheus:latest
    container_name: monitoring_prometheus
    restart: unless-stopped
    volumes:
      - ./data/prometheus/config:/etc/prometheus/
      - ./data/prometheus/data:/prometheus
    command:
      - ‘-config.file=/etc/prometheus/prometheus.yml‘
      - ‘-storage.local.path=/prometheus‘
      - ‘-alertmanager.url=http://alertmanager:9093‘
    expose:
      - 9090
    ports:
      - 9090:9090
    links:
      - cadvisor:cadvisor
      - node-exporter:node-exporter

  node-exporter:
    image: prom/node-exporter:latest
    container_name: monitoring_node_exporter
    restart: unless-stopped
    expose:
      - 9100

  cadvisor:,
    image: google/cadvisor:latest
    container_name: monitoring_cadvisor
    restart: unless-stopped
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:rw
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
    expose:
      - 8080

  grafana:
    image: grafana/grafana:latest
    container_name: monitoring_grafana
    restart: unless-stopped
    links:
      - prometheus:prometheus
    volumes:
      - ./data/grafana:/var/lib/grafana
    environment:
      - GF_SECURITY_ADMIN_PASSWORD=MYPASSWORT
      - GF_USERS_ALLOW_SIGN_UP=false
      - GF_SERVER_DOMAIN=myrul.com
      - GF_SMTP_ENABLED=true
      - GF_SMTP_HOST=smtp.gmail.com:587
      - [email protected]
      - GF_SMTP_PASSWORD=mypassword
      - [email protected]

prometheus.yml

# my global config
global:
  scrape_interval:     120s # By default, scrape targets every 15 seconds.
  evaluation_interval: 120s # By default, scrape targets every 15 seconds.
  # scrape_timeout is set to the global default (10s).

  # Attach these labels to any time series or alerts when communicating with
  # external systems (federation, remote storage, Alertmanager).
  external_labels:
      monitor: ‘my-project‘

# Load and evaluate rules in this file every ‘evaluation_interval‘ seconds.
rule_files:
  # - "alert.rules"
  # - "first.rules"
  # - "second.rules"

# 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‘

    # Override the global default and scrape targets from this job every 5 seconds.
    scrape_interval: 120s

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

    static_configs:
         - targets: [‘localhost:9090‘,‘cadvisor:8080‘,‘node-exporter:9100‘, ‘nginx-exporter:9113‘]

command

docker-compose up -d

sysdig

sysdig offical

docker pull sysdig/sysdig
docker run -i -t --name sysdig --privileged -v /var/run/docker.sock:/host/var/run/docker.sock -v /dev:/host/dev -v /proc:/host/proc:ro -v /boot:/host/boot:ro -v /lib/modules:/host/lib/modules:ro -v /usr:/host/usr:ro sysdig/sysdig

docker container exec -it sysdig bash
csysdig

Weave Scope

weave scope

常用的容器监控工具

Docker Runtime Metrics Guide

原文地址：http://blog.51cto.com/bkmaster/2327782