여러 대의 서버 모니터링을 위한 netdata 커스텀 대시보드
netdata 는 무료이면서 강력한 기능을 제공하는 모니터링 도구이다. netdata 모니터링 항목은 netdata 데모 (https://london.my-netdata.io/default.html) 를 참고한다. 또한 첨부한 이미지와 같이 netdata api 를 통해 여러 대의 서버 자원을 한 눈에 모니터링할 수도 있다. 이를 위해서 netdata 의 커스텀 대시보드를 구성해 본다.
커스텀 대시보드 데모 : http://demo.chicpro.dev/netdata-dashboard.html
데모에는 cpu, ram, disk 및 uptime 정보를 제공한다. 커스텀 대시보드 데모의 코드는 아래와 같다.
<!DOCTYPE html>
<html lang="en">
<head>
<title>NetData Dashboard</title>
<meta name="application-name" content="netdata">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<script>var netdataTheme = 'slate';</script>
<script type="text/javascript" src="https://london.my-netdata.io/dashboard.js"></script>
<style>
.item {margin: 10px; padding: 15px 10px; border:1px solid #494949;}
</style>
</head>
<script>
// --- OPTIONS FOR THE DASHBOARD --
// this section has to appear before loading dashboard.js
// Select a theme.
// uncomment on of the two themes:
// var netdataTheme = 'default'; // this is white
var netdataTheme = 'slate'; // this is dark
var netdataNoBootstrap = true;
// Set the default netdata server.
// on charts without a 'data-host', this one will be used.
// the default is the server that dashboard.js is downloaded from.
// var netdataServer = 'http://my.server:19999/';
</script>
<body>
<div class="container">
<div class="col-md-3 item">
<div>
<div data-netdata="system.cpu"
data-host="https://london.my-netdata.io/"
data-gauge-max-value="100"
data-chart-library="gauge"
data-width="50%"
data-after="-540"
data-points="540"
data-title="CPU"
data-units="%"
data-colors="#2c9588"
data-gauge-generate-gradient="[0, 80, 100]"
data-gauge-gradient-percent-color-0="#2c9588"
data-gauge-gradient-percent-color-80="#c96667"
data-gauge-gradient-percent-color-100="#ff3300"
class="netdata-container"></div>
<div class="netdata-container-easypiechart"
data-netdata="system.ram"
data-host="https://london.my-netdata.io/"
data-dimensions="used|buffers|active|wired"
data-append-options="percentage"
data-chart-library="easypiechart"
data-title="Used RAM"
data-units="%"
data-easypiechart-max-value="100"
data-width="45%"
data-after="-540"
data-points="540"
data-colors="#EE9911"
role="application"></div>
</div>
<div>
<div data-netdata="disk_space._"
data-host="https://london.my-netdata.io/"
data-title="disk space for /"
data-append-options="percentage"
data-decimal-digits="0"
data-dimensions="used"
data-chart-library="gauge"
data-width="100%"
data-height="100%"
data-after="-300"
data-points="300"
data-gauge-max-value="100"
data-colors="#ffffff"
data-gauge-generate-gradient="[0, 70, 100]"
data-gauge-gradient-percent-color-0="#ffffff"
data-gauge-gradient-percent-color-70="d88b2f"
data-gauge-gradient-percent-color-100="#ff3300"
data-units="%"
></div>
</div>
<div data-netdata="system.uptime"
data-host="https://london.my-netdata.io/"
data-title="uptime"
data-width="100%"
data-legend="no"
data-points="200"
data-dimensions="uptime"
data-show-value-of-uptime-at="london-uptime"
></div>
<div class="text-center">uptime : <span id="london-uptime"></span></div>
<div class="text-center" style="padding-top: 10px;">
<a href="https://london.my-netdata.io/" class="btn btn-primary btn-sm" target="_blank">London</a>
</div>
</div>
<div class="col-md-3 item">
<div>
<div data-netdata="system.cpu"
data-host="https://sanfrancisco.my-netdata.io/"
data-gauge-max-value="100"
data-chart-library="gauge"
data-width="50%"
data-after="-540"
data-points="540"
data-title="CPU"
data-units="%"
data-colors="#2c9588"
data-gauge-generate-gradient="[0, 80, 100]"
data-gauge-gradient-percent-color-0="#2c9588"
data-gauge-gradient-percent-color-80="#c96667"
data-gauge-gradient-percent-color-100="#ff3300"
class="netdata-container"></div>
<div class="netdata-container-easypiechart"
data-netdata="system.ram"
data-host="https://sanfrancisco.my-netdata.io"
data-dimensions="used|buffers|active|wired"
data-append-options="percentage"
data-chart-library="easypiechart"
data-title="Used RAM"
data-units="%"
data-easypiechart-max-value="100"
data-width="45%"
data-after="-540"
data-points="540"
data-colors="#EE9911"
role="application"></div>
</div>
<div>
<div data-netdata="disk_space._"
data-host="https://sanfrancisco.my-netdata.io/"
data-title="disk space for /"
data-append-options="percentage"
data-decimal-digits="0"
data-dimensions="used"
data-chart-library="gauge"
data-width="100%"
data-height="100%"
data-after="-300"
data-points="300"
data-gauge-max-value="100"
data-colors="#ffffff"
data-gauge-generate-gradient="[0, 70, 100]"
data-gauge-gradient-percent-color-0="#ffffff"
data-gauge-gradient-percent-color-70="d88b2f"
data-gauge-gradient-percent-color-100="#ff3300"
data-units="%"
></div>
</div>
<div data-netdata="system.uptime"
data-host="https://sanfrancisco.my-netdata.io/"
data-title="uptime"
data-width="100%"
data-legend="no"
data-points="200"
data-dimensions="uptime"
data-show-value-of-uptime-at="california-uptime"
></div>
<div class="text-center">uptime : <span id="california-uptime"></span></div>
<div class="text-center" style="padding-top: 10px;">
<a href="https://sanfrancisco.my-netdata.io/" class="btn btn-primary btn-sm" target="_blank">California</a>
</div>
</div>
</div>
</body>
</html>코드 중 data-host="https://london.my-netdata.io/" 부분을 모니터링할 서버로 지정하면 된다. 커스텀 대시보드 관련 내용은 https://github.com/netdata/netdata/wiki/Custom-Dashboards 를 참고했다.