prometheus部署与使用（二）

prometheus部署与使用

1.二进制方式部署

1.1.安装prometheus

1.下载软件包
[root@prometheus-server ~]# wget https://github.com/prometheus/prometheus/releases/download/v2.23.0/prometheus-2.23.0.linux-amd64.tar.gz

2.安装
[root@prometheus-server ~]# mkdir /data/ -p
[root@prometheus-server ~]# tar xf prometheus-2.23.0.linux-amd64.tar.gz -C /data/
[root@prometheus-server ~]# mv /data/prometheus-2.23.0.linux-amd64 /data/prometheus

3.将可执行程序移动到/usr/bin
[root@prometheus-server ~]# lscd /data/prometheus
[root@prometheus-server prometheus]# cp prom* /usr/bin/
[root@prometheus-server prometheus]# prometheus --version
prometheus, version 2.23.0 (branch: HEAD, revision: 26d89b4b0776fe4cd5a3656dfa520f119a375273)
  build user:       root@37609b3a0a21
  build date:       20201126-10:56:17
  go version:       go1.15.5
  platform:         linux/amd64

1.2.启动prometheus

常用启动参数
–config.file="/data/prometheus/prometheus.yml" //指定配置文件路径

–web.enable-lifecycle //开启web热加载配置

–storage.tsdb.path= //指定tsdb数据库路径，默认在data/

–storage.tsdb.retention.time= //指定tsdb保留数据的时长，默认15d

启动prometheus
[root@prometheus-server ~]# prometheus --config.file="/data/prometheus/prometheus.yml" --web.enable-lifecycle &

1.3.使用systemctl启动prometheus

编写systemctl文件，写启动命令的时候指定tsdb的路径

1.编写文件
[root@prometheus-server system]# cd /usr/lib/systemd/system
[root@prometheus-server system]# vim prometheus.service 
[Unit]
Description=https://prometheus.io

[Service]
Restart=on-failure
ExecStart=/data/prometheus/prometheus --config.file=/data/prometheus/prometheus.yml --web.enable-lifecycle --storage.tsdb.path=/data/prometheus/data

[Install]
WantedBy=multi-user.target


2.加载system配置以及启动服务
[root@prometheus-server system]# systemctl daemon-reload
[root@prometheus-server system]# systemctl start prometheus.service
[root@prometheus-server system]# systemctl enable prometheus.service

3.查看进程
[root@prometheus-server system]# ps aux | grep prome

1.4.访问prometheus

访问：http://loclahost:9090

查看监控主机页面

status—>targets

1.5.将监控主机页面的prometheus地址修改为真实ip地址

1.修改配置，找到targets一行，将localhost修改为真实地址即可
[root@prometheus-server ~]# vim /data/prometheus/prometheus.yml 
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: ['192.168.81.210:9090']
    
2.加载配置
由于启动增加了--web.enable-lifecycle，因此可以使用配置加载功能
[root@prometheus-server ~]# curl -XPOST 192.168.81.210:9090/-/reload

点击endpoint下面的链接即可看到metris度量值

2.docker部署prometheus

2.1.安装docker

1.获取镜像源
[root@prometheus-server ~]# wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo
[root@prometheus-server ~]# sed -i 's#download.docker.com#mirrors.tuna.tsinghua.edu.cn/docker-ce#' /etc/yum.repos.d/docker-ce.repo 
[root@prometheus-server ~]# yum makecache fast

2.安装docker
[root@prometheus-server ~]# yum -y install docker-ce

3.配置镜像加速器
[root@prometheus-server ~]# tee /etc/docker/daemon.json <<-'EOF'
{
   "registry-mirrors": ["https://zggyaen3.mirror.aliyuncs.com"]
}
EOF


4.启动docker
[root@prometheus-server ~]# systemctl restart docker

2.2.运行prometheus容器

我们将刚刚安装好的prometheus配置文件挂载到容器中，并映射成7090端口

[root@prometheus-server ~]# docker run -d -p7090:9090  -v /data/prom/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus:latest 
517523d6da1d4135bbd5d6bb2714576f20b7da832b6d75ce7dc88f1844c1d5f4
[root@prometheus-server ~]# docker ps -a
CONTAINER ID   IMAGE                    COMMAND                  CREATED          STATUS          PORTS                    NAMES
517523d6da1d   prom/prometheus:latest   "/bin/prometheus --c…"   16 seconds ago   Up 10 seconds   0.0.0.0:7090->9090/tcp   hopeful_tharp