1. prometheus-监控docker服务器

• prometheus-监控docker服务器 。

  • cAdvisor（Container Advisor）：用于收集正在运行的容器资源使用和性能信息.

  • 项目地址： https://github.com/google/cadvisor 。

  • docker部署cAdvisor示例:

                                    
                                      docker run -d \
    --volume=/:/rootfs:ro \
    --volume=/var/run:/var/run:ro \
    --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
    
                                    
                                  

• 案例： 监控docker服务器 。

  • 监控执行命令 。

                                    
                                      docker run -d \
    --volume=/:/rootfs:ro \
    --volume=/var/run:/var/run:ro \
    --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
    
                                    
                                  

  • 执行创建监控docker服务 。

                                    
                                      [root@VM-0-17-centos ~]# docker run -d \
    > --volume=/:/rootfs:ro \
    > --volume=/var/run:/var/run:ro \
    > --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
    Unable to find image 'google/cadvisor:latest' locally
    latest: Pulling from google/cadvisor
    ff3a5c916c92: Pull complete 
    44a45bb65cdf: Pull complete 
    0bbe1a2fe2a6: Pull complete 
    Digest: sha256:815386ebbe9a3490f38785ab11bda34ec8dacf4634af77b8912832d4f85dca04
    Status: Downloaded newer image for google/cadvisor:latest
    78d6d7db3b715f5800346cd592575a4b7be5e644e198dbf95160e64c3545fa53
    
                                    
                                  

  • 进行数据访问http://ip:8080 。

  • 配置prometheus添加服务 。

                                    
                                      [root@prometheus ~]# cd /opt/monitor/
    [root@prometheus monitor]# ll
    total 23072
    drwxr-xr-x 2 3434 3434       93 Jun  7 14:39 alertmanager
    -rw-r--r-- 1 root root 23624308 May 11 04:11 alertmanager-0.22.0-rc.1.linux-amd64.tar.gz
    drwxr-xr-x 8 root root      157 Jun  6 17:18 grafana
    drwxr-xr-x 5 3434 3434      145 Jun  7 17:07 prometheus
    [root@prometheus monitor]# cd prometheus/
    [root@prometheus prometheus]# ll
    total 167980
    drwxr-xr-x 2 3434 3434       38 Mar 17 04:20 console_libraries
    drwxr-xr-x 2 3434 3434      173 Mar 17 04:20 consoles
    -rw-r--r-- 1 3434 3434    11357 Mar 17 04:20 LICENSE
    -rw-r--r-- 1 3434 3434     3420 Mar 17 04:20 NOTICE
    -rwxr-xr-x 1 3434 3434 91044140 Mar 17 02:10 prometheus
    -rw-r--r-- 1 3434 3434     1043 Jun  7 17:07 prometheus.yml
    -rwxr-xr-x 1 3434 3434 80944687 Mar 17 02:12 promtool
    drwxr-xr-x 2 root root       22 Jun  7 14:43 rules
    [root@prometheus prometheus]# vim prometheus.yml 
    [root@prometheus prometheus]# cat 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:
           - 127.0.0.1:9093
    
    # Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
    rule_files:
      - "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: ['127.0.0.1:9090']
      - job_name: 'linux server'
        static_configs:
          - targets: ['121.4.78.187:9100']
            labels:
              prod: 'web1'
      - job_name: 'docker server'
        static_configs:
          - targets: ['121.4.63.211:8080']
            labels:
              prod: 'web2'
    
    
                                    
                                  

  • 重新加载prometheus服务 。

                                    
                                      [root@prometheus prometheus]# /bin/systemctl restart prometheus
    [root@prometheus prometheus]# /bin/systemctl status prometheus
    ● prometheus.service - prometheus
       Loaded: loaded (/usr/lib/systemd/system/prometheus.service; enabled; vendor preset: disabled)
       Active: active (running) since Mon 2021-06-07 22:53:36 CST; 4s ago
     Main PID: 14647 (prometheus)
       CGroup: /system.slice/prometheus.service
               └─14647 /opt/monitor/prometheus/prometheus --config.file=/opt/monitor/prometheus/prometheus.yml
    
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.914Z caller=head.go:740 component=tsdb msg="WAL segment loaded" segment=1...egment=19
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.958Z caller=head.go:740 component=tsdb msg="WAL segment loaded" segment=1...egment=19
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.990Z caller=head.go:740 component=tsdb msg="WAL segment loaded" segment=1...egment=19
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.990Z caller=head.go:740 component=tsdb msg="WAL segment loaded" segment=1...egment=19
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.990Z caller=head.go:745 component=tsdb msg="WAL replay completed" checkpo....353439ms
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.993Z caller=main.go:799 fs_type=XFS_SUPER_MAGIC
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.993Z caller=main.go:802 msg="TSDB started"
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.993Z caller=main.go:928 msg="Loading configuration file" filename=/opt/mo...theus.yml
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.996Z caller=main.go:959 msg="Completed loading of configuration file" filename=/op…µs
    Jun 07 22:53:36 prometheus prometheus[14647]: level=info ts=2021-06-07T14:53:36.996Z caller=main.go:751 msg="Server is ready to receive web requests."
    Hint: Some lines were ellipsized, use -l to show in full.
    
                                    
                                  

  • 浏览器验证prometheus配置文件是否生成 。

  • 使用grafana进行监控docker服务数据展示 。

    • 导入监控docker的仪表盘，ID为193 。

    • 填写名称，选择数据源 。

    • 发现已有监控数据了 。

  • 监控docker服务添加一个导航栏 。

    点击save dashboard保存 。

    

    发现有了导航点击数据没有变化 我们需要修改图表信息 。

    

    每张图片添加如上信息 。

    发现修改之后，就有了变化了 。

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