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Prometheus部署 搭建监控系统二(基础篇)

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Prometheus部署:

安装 go 语言环境

由于Prometheus是用golang开发的,所以首先安装一个go环境,Go语言是跨平台,支持Windows、Linux、Mac OS X等系统,还提供有源码,可编译安装

  • 二进制包下载地址
wget https://dl.google.com/go/go1.13.5.linux-amd64.tar.gz

想安装指定历史版本,点此进入:go语言官网

  • 下载后,上传到要部署的服务器。指定解压路径后,设置环境变量
[root@prometheus ~]# tar xf go1.13.4.linux-amd64.tar.gz -C /usr/local
  • 配置环境变量
[root@prometheus ~]# vim /etc/profile
# 在文件的最后添加如下内容:
export PATH=$PATH:/usr/local/go/bin

# 生效环境变量
[root@prometheus ~]# source /etc/profile
  • 测试go环境是否安装成功
[root@prometheus ~]# go version
go version go1.13.4 linux/amd64

安装Prometheus

  • 二进制包下载地址
wget https://github.com/prometheus/prometheus/releases/download/v2.14.0/prometheus-2.14.0.linux-amd64.tar.gz

想安装指定历史版本,点此进入:Prometheus官网(包括所有的export组件)

  • 下载好包后,传到准备好的server端,解压到指定目录
[root@prometheus ~]# tar  xf prometheus-2.14.0.linux-amd64.tar.gz -C /usr/local
  • 为了以后方便配置,做一个软链接
[root@prometheus ~]# ln -sv /usr/local/prometheus-2.14.0.linux-amd64/ /usr/local/Prometheus
  • 然后修改prometheus的配置文件
[root@prometheus ~]# vim /usr/local/Prometheus/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: [‘localhost:9090‘]
  • 后台启动prometheus
[root@prometheus ~]# nohup /usr/local/Prometheus/prometheus --config.file=/usr/local/Prometheus/prometheus.yml &
  • 查看是否运行状态
[root@prometheus ~]# cat ./nohup.out

通过如下URL可以打开prometheus的自带监控界面: localhost:9090,点击targets 跳转到监控目标,可以展示出所配置的监控对象。

如果state一列中,所配置的监控对象的状态事down,说明node节点未配置或配置错误

配置热加载

Promtheus的时序 数据库 在存储了大量的数据后,每次重启Prometheus进程的时间会越来越慢。 而在日常运维工作中会经常调整Prometheus的配置信息,实际上Prometheus提供了在运行时热加载配置信息的功能。

  • 热加载方式:发送一个POST请求到 /-/reload ,需要在启动prometheus时加上 --web.enable-lifecycle 选项
[root@prometheus ~]# nohup /usr/local/Prometheus/prometheus --config.file=/usr/local/Prometheus/prometheus.yml --web.enable-lifecycle &
  • 热加载命令
[root@prometheus ~]# curl -XPOST http://localhost:9090/-/reload

这样更改配置文件后就不用关闭再启动prometheus了

扩展(批量添加节点)

在添加大量主机集群时,一台一台在prometheus.yml中添加,显然不太方便,我们通过编写发现文件,进行批量主机管理

  • 编写自动发现文件
[root@prometheus ~]# mkdir -p /usr/local/Prometheus/prometheus/targets/node
[root@prometheus ~]# vim /usr/local/Prometheus/prometheus/targets/node/node.yml
- targets: 
  - ‘172.16.214.141:9100‘
  - ‘172.16.214.140:9100‘
  - ‘172.16.214.139:9100‘
  labels:
    idc: "bj"               # 备注集群名
  • 修改配置文件
[root@prometheus ~]# vim /usr/local/Prometheus/prometheus/prometheus.yml
  - job_name: ‘nm_mch-app_node‘
    file_sd_configs:
      - files: [‘/usr/local/Prometheus/prometheus/targets/node/node.yml‘]
        refresh_interval: 5s

配置systemd启动prometheus

[root@prometheus ~]# vim /lib/systemd/system/prometheus.service
[Unit]
Description=Prometheus
After=network.target

[Service]
ExecStart=/usr/local/Prometheus/prometheus --config.file=/usr/local/Prometheus/prometheus.yml --web.enable-lifecycle

[Install]
WantedBy=multi-user.target

# 重载配置并设置开机自启
[root@prometheus ~]# systemctl daemon-reload
[root@prometheus ~]# systemctl start prometheus
[root@prometheus ~]# systemctl enable prometheus

Prometheus部署 搭建监控系统二(基础篇)

标签:default   修改   emd   eve   after   series   上传   更改   root   

原文地址:https://www.cnblogs.com/Atonement/p/14688743.html

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