prometheus2.40.2

1、部署prometheus server

官网下载地址：https://prometheus.io/download/

[root@ubuntu2004 ~]#tar xf prometheus-2.40.2.linux-amd64.tar.gz -C /usr/local/

[root@ubuntu2004 ~]#cd /usr/local/
[root@ubuntu2004 local]#mv prometheus-2.40.2.linux-amd64 prometheus-2.40.2
[root@ubuntu2004 local]#ln -s /usr/local/prometheus-2.40.2 /usr/local/prometheus

[root@ubuntu2004 local]#cd prometheus
[root@ubuntu2004 prometheus]#ln -s /usr/local/prometheus/prometheus /usr/local/bin/
[root@ubuntu2004 prometheus]#cp prometheus.yml{,.bak}

#基于systemd管理启动、停止
[root@ubuntu2004 prometheus]#vim /usr/lib/systemd/system/prometheus.service
[Unit]
Description=Monitoring system and time series database
Documentation=https://prometheus.io/docs/introduction/overview/

[Service]
Restart=always
#User=prometheus
ExecStart=/usr/local/prometheus/prometheus --config.file=/usr/local/prometheus/prometheus.yml
ExecReload=/bin/kill -HUP $MAINPID
TimeoutStopSec=20s
SendSIGKILL=no
LimitNOFILE=8192

[Install]
WantedBy=multi-user.target

[root@ubuntu2004 prometheus]#systemctl daemon-reload

[root@ubuntu2004 prometheus]#systemctl stop prometheus.service 
[root@ubuntu2004 prometheus]#systemctl start prometheus.service 
[root@ubuntu2004 prometheus]#ss -ntlp
State  Recv-Q  Send-Q   Local Address:Port   Peer Address:Port Process                                    
LISTEN 0       128            0.0.0.0:22          0.0.0.0:*     users:(("sshd",pid=772,fd=3))             
LISTEN 0       4096     127.0.0.53%lo:53          0.0.0.0:*     users:(("systemd-resolve",pid=739,fd=13)) 
LISTEN 0       128               [::]:22             [::]:*     users:(("sshd",pid=772,fd=4))             
LISTEN 0       4096                 *:9090              *:*     users:(("prometheus",pid=6640,fd=3))

2、部署node exporter

#prometheus节点：
[root@ubuntu2004 ~]#tar xf node_exporter-1.4.0.linux-amd64.tar.gz
[root@ubuntu2004 ~]#cd node_exporter-1.4.0.linux-amd64/
[root@ubuntu2004 node_exporter-1.4.0.linux-amd64]#mv node_exporter /usr/local/bin/

[root@ubuntu2004 node_exporter-1.4.0.linux-amd64]#vim /usr/lib/systemd/system/exporter.service 

[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
#User=prometheus
ExecStart=/usr/local/bin/node_exporter  --collector.ntp --collector.mountstats --collector.systemd --collector.ethtool --collector.tcpstat
ExecReload=/bin/kill -HUP $MAINPID
TimeoutStopSec=20s
Restart=always

[Install]
WantedBy=multi-user.target


[root@ubuntu2004 node_exporter-1.4.0.linux-amd64]#systemctl daemon-reload 
[root@ubuntu2004 node_exporter-1.4.0.linux-amd64]#systemctl start exporter.service 

[root@ubuntu2004 ~]#ss -ntlp
State  Recv-Q  Send-Q   Local Address:Port   Peer Address:Port Process                                    
LISTEN 0       128            0.0.0.0:22          0.0.0.0:*     users:(("sshd",pid=772,fd=3))             
LISTEN 0       4096     127.0.0.53%lo:53          0.0.0.0:*     users:(("systemd-resolve",pid=739,fd=13)) 
LISTEN 0       128               [::]:22             [::]:*     users:(("sshd",pid=772,fd=4))             
LISTEN 0       4096                 *:9090              *:*     users:(("prometheus",pid=6640,fd=3))      
LISTEN 0       4096                 *:9100              *:*     users:(("node_exporter",pid=51385,fd=7))

#其他被监控节点：
[root@ubuntu2004 ~]#tar xf node_exporter-1.4.0.linux-amd64.tar.gz 
[root@ubuntu2004 ~]#mv node_exporter-1.4.0.linux-amd64/node_exporter /usr/local/bin/
[root@ubuntu2004 ~]#vim /usr/lib/systemd/system/exporter.service 
[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/node_exporter 
ExecReload=/bin/kill -HUP $MAINPID
TimeoutStopSec=20s
Restart=always

[Install]
WantedBy=multi-user.target

[root@ubuntu2004 ~]#systemctl daemon-reload 
[root@ubuntu2004 ~]#systemctl start exporter.service 

[root@ubuntu2004 ~]#ss -ntlp
State  Recv-Q  Send-Q   Local Address:Port   Peer Address:Port Process                                    
LISTEN 0       4096     127.0.0.53%lo:53          0.0.0.0:*     users:(("systemd-resolve",pid=739,fd=13)) 
LISTEN 0       128            0.0.0.0:22          0.0.0.0:*     users:(("sshd",pid=772,fd=3))             
LISTEN 0       4096                 *:9100              *:*     users:(("node_exporter",pid=46958,fd=3))  
LISTEN 0       128               [::]:22             [::]:*     users:(("sshd",pid=772,fd=4))

3、修改prometheus配置监控各节点

[root@ubuntu2004 prometheus]#pwd
/usr/local/prometheus
[root@ubuntu2004 prometheus]#vim prometheus.yml
......
  - job_name: "node_exporter"
    metrics_path: '/metrics'
    scheme: 'http'
    static_configs:
      - targets:
        - "10.0.0.101:9100"
        - "10.0.0.102:9100"
        - "10.0.0.103:9100"
[root@ubuntu2004 prometheus]#systemctl restart prometheus.service