centos安装Prometheus命令

首先需要安装epel-release和yum-utils，执行以下命令：

sudo yum install epel-release
sudo yum install yum-utils

添加Prometheus的yum源，执行以下命令：

sudo yum install wget
sudo wget https://github.com/prometheus/prometheus/releases/download/v2.33.1/prometheus-2.33.1.linux-amd64.tar.gz
sudo tar -xvzf prometheus-2.33.1.linux-amd64.tar.gz

将Prometheus的可执行文件复制到/usr/local/bin目录下，执行以下命令：

sudo cp prometheus-2.33.1.linux-amd64/prometheus /usr/local/bin/
sudo cp prometheus-2.33.1.linux-amd64/promtool /usr/local/bin/

创建Prometheus需要的配置文件目录，执行以下命令：

sudo mkdir /etc/prometheus

将Prometheus的配置文件复制到/etc/prometheus目录下，执行以下命令：

sudo cp prometheus-2.33.1.linux-amd64/prometheus.yml /etc/prometheus/

创建Prometheus的数据目录，执行以下命令：

sudo mkdir /var/lib/prometheus

修改Prometheus的配置文件，将数据目录路径修改为/var/lib/prometheus，执行以下命令：

sudo vi /etc/prometheus/prometheus.yml

将以下内容添加到配置文件中：

global:
  scrape_interval: 15s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'node_exporter'
    static_configs:
      - targets: ['localhost:9100']

启动Prometheus服务，执行以下命令：

sudo systemctl start prometheus

验证Prometheus服务是否正常运行，执行以下命令：

curl http://localhost:9090/

如果返回以下内容，则表示Prometheus服务已经正常运行：

# HELP prometheus_build_info A metric with a constant '1' value labeled by version, revision, and branch from which Prometheus was built.
# TYPE prometheus_build_info gauge
prometheus_build_info{branch="HEAD",revision="f5c5a5eff5",version="2.33.1"} 1
``