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Ëæ×ÅÈÝÆ÷ÊÖÒÕµÄÉú³¤ £¬Docker³ÉΪÁËÏÖÔÚ×îÊ¢ÐеÄÈÝÆ÷ƽ̨֮һ ¡£Docker²»µ«Äܹ»ÈÃÓ¦ÓóÌÐòÔ½·¢ÇáÓ¯¡¢¿çƽ̨ £¬»¹¿ÉÒÔÌá¸ßÓ¦ÓõĿÉÒÆÖ²ÐԺ͵¯ÐÔ ¡£DockerÖÐÒ²ÌṩÁ˸»ºñµÄ¹¤¾ßºÍ×é¼þ £¬¿ÉÒÔʵÏÖÈÝÆ÷µÄ×Ô¶¯»¯ÔËάºÍ¼à¿Ø ¡£ÔÚ±¾ÎÄÖÐ £¬ÎÒÃǽ«ÉîÈë̽ÌÖÔõÑùʹÓÃDocker¾ÙÐÐÈÝÆ÷µÄ×Ô¶¯»¯ÔËάºÍ¼à¿Ø ¡£

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Docker»ù´¡ÖªÊ¶ £¬°üÀ¨Docker¾µÏñ¡¢DockerÈÝÆ÷µÈ¿´·¨ ¡£

Linux»ù´¡ÖªÊ¶ £¬°üÀ¨LinuxÏÂÁîÐлù±¾²Ù×÷¡¢LinuxÎļþϵͳµÈ¿´·¨ ¡£

Docker-composeµÄ»ù´¡ÖªÊ¶ £¬Docker-composeÊÇÒ»¸öÓÃÀ´½ç˵ºÍÔËÐжà¸öDockerÈÝÆ÷µÄ¹¤¾ß £¬¿ÉÒÔ¼ò»¯dockerÓ¦ÓõݲÅÅ ¡£

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DockerÌṩÁËһЩ×Ô¶¯»¯ÔËάµÄ·½·¨ £¬Ê¹µÃÈÝÆ÷ÉúÃüÖÜÆÚÖÎÀíÔ½·¢±ã½ÝºÍ¸ßЧ ¡£ÔÚ±¾Õ½ÚÖÐ £¬ÎÒÃǽ«ÏÈÈÝʹÓÃDocker¾ÙÐÐÈÝÆ÷×Ô¶¯»¯ÔËάµÄÈý¸ö·½Ã棺

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µ±×ðÁú¿­Ê±ÈÝÆ÷·ºÆðÒ쳣ʱ £¬¿ÉÒÔʹÓÃDockerÌṩµÄ×Ô¶¯ÖØÆô¹¦Ð§ £¬µ±ÈÝÆ÷×èÖ¹ÔËÐÐʱ £¬Docker»á×Ô¶¯½«ÈÝÖØÊÓÆô ¡£

docker run --restart always image_name

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µ±Docker¾µÏñ°æ±¾¸üÐÂʱ £¬DockerÌṩÁËÒ»ÖÖ×Ô¶¯¸üеķ½·¨ £¬×Ô¶¯ÖØа汾µÄ¾µÏñÀ­È¡²¢Æô¶¯ÈÝÆ÷ ¡£

docker run -d --name my_container --restart=always image_name:latest

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³ýÁËDocker×Ô´øµÄÈÝÆ÷¿µ½¡¼ì²éÍâ £¬ÎÒÃÇ»¹¿ÉÒÔʹÓÃDocker×Ô´øµÄ¼à¿Ø¹¤¾ß £¬ºÃ±ÈDocker StatsÖ¸Áî¿ÉÒÔʵʱ¼à¿ØÈÝÆ÷ÔËÐеÄ״̬ÐÅÏ¢ ¡£

docker stats container_name»òÕßcontainer_id

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DockerÌṩÁËÓÃÓÚ¼à¿ØÈÝÆ÷µÄ¹¤¾ß £¬ÆäÖÐÒ»¸ö½ÏÁ¿³£ÓõÄÊÇPrometheus £¬ËüÊÇÒ»¸ö¿ªÔ´¹¤¾ß¼¯ £¬ÓÃÓÚÖ¸±ê¼Ç¼ºÍչʾ £¬¿ÉÒÔʵÏÖÈÝÆ÷ʱ¼äÐòÁÐÊý¾ÝÊÕÂÞºÍչʾ ¡£ÔÚ±¾Ð¡½ÚÖÐ £¬ÎÒÃǽ«ÏêϸÏÈÈÝÔõÑùʹÓÃPrometheus¼à¿ØDockerÈÝÆ÷ ¡£

×°ÖÃPrometheus

Ê×ÏÈ £¬ÎÒÃÇÐèÒª´ÓPrometheusµÄ¹Ù·½ÍøÕ¾£¨https://prometheus.io/download/£©ÏÂÔØ×îеÄ×°Öðü £¬È»ºó½âѹËõµ½LinuxÖÐ ¡£

tar -zxvf prometheus-*.tar.gz
cd prometheus-*

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ÉèÖÃPrometheus

½«ÒÔÏÂÄÚÈÝÌí¼Óµ½prometheus.ymlÎļþÖÐ £¬ÓÃÓÚÔÚPrometheusÉÏÉèÖÃDocker¼à¿Ø

scrape_configs:
- job_name: 'prometheus'
  scrape_interval: 5s
  static_configs:
    - targets: ['localhost:9090']

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Æô¶¯PrometheusÏà¹ØЧÀÍ£¨Docker daemon £¬Prometheus£©µÄ×î¼òÆÓÒªÁìÊÇʹÓÃDocker Compose ¡£ÒÔÏÂΪʾÀýdocker-compose.ymlÎļþ £¬ÓÃÓÚÆô¶¯PrometheusºÍÏà¹ØЧÀÍ ¡£

version: '3'
services:
  prometheus:
    image: prom/prometheus

    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    restart: always

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½«ÒÔÏÂÄÚÈÝÌí¼Óµ½prometheus.ymlÎļþÖÐ £¬ÓÃÓÚÔÚPrometheusÉÏÉèÖÃDocker¼à¿Ø ¡£

scrape_configs:
- job_name: 'docker'
  scrape_interval: 5s
  static_configs:
  - targets: ['localhost:9323']

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ÔËÐÐexporter

Òª½«Docker״̬µ¼³öΪPrometheusÖ¸±ê £¬ÐèҪʹÓÃPrometheus Exporter £¬ÒÔÏÂΪdocker-compose.ymlÎļþʾÀý ¡£

version: '3'
services:
  prometheus:
    image: prom/prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    restart: always
  prometheus-exporter:
    image: prom/node-exporter:v0.15.2
    command:
      - '--path.rootfs=/hostfs'
    ports:
      - "9323:9323"
    volumes:
      - /proc:/hostfs/proc:ro
      - /sys:/hostfs/sys:ro
      - /:/hostfs:ro
    restart: always

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ÖØÆôDockerЧÀÍ £¬²¢Éó²éPrometheusµÄ¼à¿ØÐÅÏ¢ £¬¿ÉÒÔ¿´µ½CPU¡¢ÄÚ´æµÈÖ¸±ê £¬ÒÔ¼°DockerÊØ»¤³ÌÐòµÄÖ¸±ê ¡£

sudo systemctl daemon-reload
sudo systemctl restart docker
docker-compose up
http://localhost:9090

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