node_exporter 自定义监控

不念不忘少年蓝@ 2022-12-30 13:45 288阅读 0赞

# cd node_exporter-1.0.1.linux-amd64/
    # mkdir key
    # touch height.sh

# cat height.sh
    #!/bin/bash
    
    height=`curl -X POST \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $(cat /seal/lotus/token)" \ --data '{ "jsonrpc": "2.0", "method": "Filecoin.ChainHead", "params": [], "id": 1 }' \ 'http://127.0.0.1:1234/rpc/v0' \ | jq .result.Height`
    
    date +'%Y-%m-%d %H:%M:%S'
    echo "height $height"

2020-12-25 21:41:01
    height 353241

# crontab -l
    * * * * * /bin/bash /root/node_exporter-1.0.1.linux-amd64/key/height.sh > /root/node_exporter-1.0.1.linux-amd64/key/key.prom

# `--collector.textfile.directory` #

vim /lib/systemd/system/node_exporter.service

# cat /lib/systemd/system/node_exporter.service
    [Unit]
    Description=node_exporter service
    
    [Service]
    User=root
    ExecStart=/root/node_exporter-1.0.1.linux-amd64/node_exporter \
    	 --collector.textfile.directory=/root/node_exporter-1.0.1.linux-amd64/key
    
    TimeoutStopSec=10
    Restart=on-failure
    RestartSec=5
    
    [Install]
    WantedBy=multi-user.target

systemctl daemon-reload

systemctl restart node_exporter.service

*  获取到 `height` 值

# curl http://localhost:9100/metrics | grep height
      % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                     Dload  Upload   Total   Spent    Left  Speed
      0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0# HELP height Metric read from /root/node_exporter-1.0.1.linux-amd64/key/key.prom
    # TYPE height untyped
    height 355308
    100 77348    0 77348    0     0  2288k      0 --:--:-- --:--:-- --:--:-- 2288k

--------------------

参考：

1.  [node\_exporter添加自定义监控项][node_exporter]
2.  [Node-Exporter采集自定义Metrics][Node-Exporter_Metrics]
3.  [github node\_exporter][github node_exporter]

[node_exporter]: https://mp.weixin.qq.com/s/N6RC0h9vSm7-QKKnYBM21w
[Node-Exporter_Metrics]: https://izsk.me/2019/08/28/Node-Exporter%E9%87%87%E9%9B%86%E8%87%AA%E5%AE%9A%E4%B9%89Metrics/
[github node_exporter]: https://github.com/prometheus/node_exporter