怎么在CentOS7系统中搭建Prometheus监控

今天就跟大家聊聊有关怎么在CentOS7系统中搭建Prometheus 监控，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

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简介

prometheus可以拆分成多个节点进行指标收集。

安装环境：CentOS7

安装prometheus

wget -c https://github.com/prometheus/prometheus/releases/download/v2.23.0/prometheus-2.23.0.linux-amd64.tar.gz
tar zxvf prometheus-2.23.0.linux-amd64.tar.gz -C /opt/
cd /opt/
ln -s prometheus-2.23.0.linux-amd64 prometheus
cat > /etc/systemd/system/prometheus.service <
[Unit]
Description=prometheus
After=network.target

[Service]
Type=simple
WorkingDirectory=/opt/prometheus
ExecStart=/opt/prometheus/prometheus --config.file="/opt/prometheus/prometheus.yml"
LimitNOFILE=65536
PrivateTmp=true
RestartSec=2
StartLimitInterval=0
Restart=always

[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable prometheus
systemctl start prometheus

配置Prometheus

这里配置的是监听/opt/prometheus/servers/目录下的json文件

cat > /opt/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=` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
    - targets: ['localhost:9090']

  - job_name: 'servers'
    file_sd_configs:
    - refresh_interval: 61s
      files:
        - /opt/prometheus/servers/*.json
EOF
systemctl restart prometheus

json格式

[

{

"targets": [

"192.168.1.164:9100"

"labels": {

"instance": "192.168.1.164",

"job": "node_exporter"

}

{

"targets": [

"192.168.1.167:9100"

"labels": {

"instance": "192.168.1.167",

"job": "node_exporter"

}

]

安装node_exporter

安装到/opt/node_exporter路径下，保持默认的端口

https://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz
tar zxvf node_exporter-1.0.1.linux-amd64.tar.gz -C /opt/
cd /opt/
ln -s node_exporter-1.0.1.linux-amd64 node_exporter
cat > /etc/systemd/system/node_exporter.service <
[Unit]
Description=node_exporter
After=network.target

[Service]
Type=simple
WorkingDirectory=/opt/node_exporter
ExecStart=/opt/node_exporter/node_exporter
LimitNOFILE=65536
PrivateTmp=true
RestartSec=2
StartLimitInterval=0
Restart=always

[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable node_exporter
systemctl start node_exporter