Promethus集群部署笔记：（二）安装并配置prometheus

官方参考文档：https://prometheus.io/docs/prometheus/latest/getting_started/

1、防火墙配置

firewall-cmd --zone=public --add-port=9090/tcp --permanent

firewall-cmd --reload

2、下载prometheus

mkdir /ssd/prometheus/

mkdir /sas/prometheus/prometheus/
cd /sas/prometheus/prometheus/

wget https://github.com/prometheus/prometheus/releases/download/v2.22.2/prometheus-2.22.2.linux-amd64.tar.gz

tar xvfz prometheus-*.tar.gz
cd prometheus-*

3、修改prometheus，监控自身

vi /sas/prometheus/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).

# Attach these labels to any time series or alerts when communicating with
# external systems (federation, remote storage, Alertmanager).
external_labels:
monitor: 'devops-monitor01'

# 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'.

# Override the global default and scrape targets from this job every 5 seconds.
scrape_interval: 5s

static_configs:
- targets: ['10.255.200.1:9090','10.255.200.2:9090','10.255.200.3:9090']

4、编写Systemd服务管理配置文件

vi /usr/lib/systemd/system/prometheus.service

[Unit]
Description=Prometheus Services
After=network.target remote-fs.target

[Service]
Type=simple
ExecStart=/sas/prometheus/prometheus/prometheus --config.file=/sas/prometheus/prometheus/prometheus.yml --storage.tsdb.path=/ssd/prometheus/
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

5、启动prometheus服务

systemctl daemon-reload

systemctl start prometheus
systemctl status prometheus
systemctl enable prometheus

6、查看监控数据

浏览器访问：http://10.255.200.1:9090/targets 。可看到3个节点都正常上线，状态为：UP。

浏览器访问：http://10.255.200.1:9090/metrics 。可看到相应的监控数据。