增加指标展示教程

yunnysunny · Jun 26, 2024 · c58d59d · c58d59d
1 parent 7c6c2f9
commit c58d59d
Show file tree

Hide file tree

Showing 7 changed files with 126 additions and 0 deletions.
diff --git a/text/14_node_log_and_monitor.md b/text/14_node_log_and_monitor.md
@@ -145,6 +145,101 @@ exports.collectDuration = function (duration) {
 
 **代码 14.2.2.4 对于仪表盘、直方图、摘要的示例代码**
 
+### 14.3 指标可视化
+指标写入 Prometheus 后，我们还需要使用 grafana 将其做可视化。Prometheus 主动来应用服务中抓取指标数据， grafana 也会定时从 Prometheus 中抓取指标数据来绘制报表。
+
+![](images/data_flow_prometheus.drawio.png)
+**图 14.3.1 指标采集数据流图**
+**代码 14.2.2.1** 是一个简单的指标收集代码，但是它没有考虑到生产环境使用时会部署若干个容器节点，为了更便捷观测某一个服务的运行状态，我们更倾向通过集群名称或者部署服务名称来对节点进行筛选。为了这么做，我们首先改造一下 **代码 14.2.2.1** ，因为我们要引入一个 `lable` 的概念。 为了方便数据做聚类统计，Prometheus 支持对每条采集数据中添加如果标签（`label`）。我们这里正是利用这个特性，对我们的数据添加上服务名称和命名空间（这里模拟 k8s 的命名空间概念）标签：
+
+```javascript
+const client = require('prom-client');
+const { commonLabels } = require('./config');  
+
+const collectDefaultMetrics = client.collectDefaultMetrics;
+collectDefaultMetrics({
+    labels: commonLabels,
+});
+```
+**代码14.3.1 添加了 lables 属性的采集数据**
+为了快速搭建一个 Prometheus 的数据采集环境，这里准备了一份 docker-compose 文件
+```yaml
+version: "3"
+services:
+  alertmanager:
+    restart: always
+    image: prom/alertmanager
+    network_mode: host
+    volumes:
+      - ./alertmanager:/etc/alertmanager
+  prometheus:
+    restart: always
+    user: root
+    privileged: true
+    image: bitnami/prometheus
+    container_name: prometheus-dev
+    network_mode: host
+    volumes:
+      - ./prometheus:/opt/bitnami/prometheus/conf
+    depends_on:
+      - alertmanager
+  grafna:
+    restart: always
+    image: grafana/grafana
+    user: root
+    volumes:
+      - ./grafana-persistence:/var/lib/grafana
+    network_mode: host
+    environment:
+       GF_SECURITY_ADMIN_PASSWORD: "secret"
+    depends_on:
+      - prometheus
+```
+**代码 14.3.2 docker-compose.yml**
+上面配置文件中，我们设置了一个卷映射 `./prometheus:/opt/bitnami/prometheus/conf` ，这是为了方便我们修改配置文件用，因为镜像 `bitnami/prometheus` 默认将配置文件放置到了 `/opt/bitnami/prometheus/conf` 目录下，我们在本机 `prometheus` 文件夹下放一个 `prometheus.yml` 文件即可被 Prometheus 读取到，这个配置文件的内容如下：
+```yaml
+# 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:9094
+# 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'.
+
+    static_configs:
+    - targets: ['localhost:9090']
+  - job_name: 'nodejs'
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    static_configs:
+    - targets: ['你node进程所在的ip:3001']
+```
+**代码 14.3.3 prometheus/prometheus.yml**
+>注意最后一行，你需要正确填写你的 node 进程所在的 IP，在某些环境下，这个 IP 可以用 `host.docker.internal` 替代。
+
+在 docker-compose.yml 所在目录中，通过命令 `docker compose up -d` 可以快速启动一个运行环境。在浏览器中打开地址 http://localhost:9090/targets 可以用来查看 Prometheus 抓取数据成功与否。 
+
+![](images/prometheus_targets.png)
+**图 14.3.2 Prometheus 的 targets 列表**
+正常情况下，每行 targets 记录的 Error 列应该是空的。
+接着打开 http://localhost:3000/login ，输入用户名密码 `admin` `secret` 即可进入。然后依次选择左侧菜单 **Connection** -> **Data Source** ，然后点击按钮 **Add Data Source**，接着会提供一系列的数据源供给选择，我们选择 Promethues 即可。最后是 Prometheus 的连接配置，我们在 `Prometheus server URL` 栏填入 `http://localhost:9090` ，然后点击 **Save & test** 按钮，正常情况下会提示 `✔ Successfully queried the Prometheus API.` 。
+然后我们来添加一个面板将指标数据呈现出来，重新回到左侧菜单，选择 Dashboards ，然后点击按钮 Create Dashboard ，显示的操作方式中选择 Import a dashboard：
+![](images/import-dashboard.png)
+**图 14.3.3 选择导入面板**
 ### 示例代码
 
 本章节示例代码可以从这里找到 https://github.com/yunnysunny/nodebook-sample/tree/master/chapter14
diff --git a/text/images/.gitkeep b/text/images/.gitkeep
diff --git a/text/images/data_flow_prometheus.drawio b/text/images/data_flow_prometheus.drawio
@@ -0,0 +1,31 @@
+<mxfile host="Electron" modified="2024-06-26T10:04:55.119Z" agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/24.6.1 Chrome/124.0.6367.207 Electron/30.0.6 Safari/537.36" etag="UXRsWgK3f3OsIwG5iyy1" version="24.6.1" type="device">
+  <diagram name="第 1 页" id="TToJXSSIWvL70sFpgB0a">
+    <mxGraphModel dx="794" dy="529" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+      <root>
+        <mxCell id="0" />
+        <mxCell id="1" parent="0" />
+        <mxCell id="v9SWtdY2XGscVYblE9iN-1" value="node 容器" style="outlineConnect=0;dashed=0;verticalLabelPosition=bottom;verticalAlign=top;align=center;html=1;shape=mxgraph.aws3.android;fillColor=#8CC64F;gradientColor=none;" parent="1" vertex="1">
+          <mxGeometry x="44" y="36" width="73.5" height="84" as="geometry" />
+        </mxCell>
+        <mxCell id="v9SWtdY2XGscVYblE9iN-2" value="" style="shape=image;aspect=fixed;image=data:image/svg+xml,<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 21.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 142.5 145.6" style="enable-background:new 0 0 142.5 145.6;" xml:space="preserve">
<style type="text/css">
	.st0{fill:#565656;}
	.st1{fill:url(#SVGID_1_);}
</style>
<g>
	<path class="st0" d="M28.7,131.5c-0.3,7.9-6.6,14.1-14.4,14.1C6.1,145.6,0,139,0,130.9s6.6-14.7,14.7-14.7c3.6,0,7.2,1.6,10.2,4.4
		l-2.3,2.9c-2.3-2-5.1-3.4-7.9-3.4c-5.9,0-10.8,4.8-10.8,10.8c0,6.1,4.6,10.8,10.4,10.8c5.2,0,9.3-3.8,10.2-8.8H12.6v-3.5h16.1
		V131.5z"/>
	<path class="st0" d="M42.3,129.5h-2.2c-2.4,0-4.4,2-4.4,4.4v11.4h-3.9v-19.6H35v1.6c1.1-1.1,2.7-1.6,4.6-1.6h4.2L42.3,129.5z"/>
	<path class="st0" d="M63.7,145.3h-3.4v-2.5c-2.6,2.5-6.6,3.7-10.7,1.9c-3-1.3-5.3-4.1-5.9-7.4c-1.2-6.3,3.7-11.9,9.9-11.9
		c2.6,0,5,1.1,6.7,2.8v-2.5h3.4V145.3z M59.7,137c0.9-4-2.1-7.6-6-7.6c-3.4,0-6.1,2.8-6.1,6.1c0,3.8,3.3,6.7,7.2,6.1
		C57.1,141.2,59.1,139.3,59.7,137z"/>
	<path class="st0" d="M71.5,124.7v1.1h6.2v3.4h-6.2v16.1h-3.8v-20.5c0-4.3,3.1-6.8,7-6.8h4.7l-1.6,3.7h-3.1
		C72.9,121.6,71.5,123,71.5,124.7z"/>
	<path class="st0" d="M98.5,145.3h-3.3v-2.5c-2.6,2.5-6.6,3.7-10.7,1.9c-3-1.3-5.3-4.1-5.9-7.4c-1.2-6.3,3.7-11.9,9.9-11.9
		c2.6,0,5,1.1,6.7,2.8v-2.5h3.4v19.6H98.5z M94.5,137c0.9-4-2.1-7.6-6-7.6c-3.4,0-6.1,2.8-6.1,6.1c0,3.8,3.3,6.7,7.2,6.1
		C92,141.2,93.9,139.3,94.5,137z"/>
	<path class="st0" d="M119.4,133.8v11.5h-3.9v-11.6c0-2.4-2-4.4-4.4-4.4c-2.5,0-4.4,2-4.4,4.4v11.6h-3.9v-19.6h3.2v1.7
		c1.4-1.3,3.3-2,5.2-2C115.8,125.5,119.4,129.2,119.4,133.8z"/>
	<path class="st0" d="M142.4,145.3h-3.3v-2.5c-2.6,2.5-6.6,3.7-10.7,1.9c-3-1.3-5.3-4.1-5.9-7.4c-1.2-6.3,3.7-11.9,9.9-11.9
		c2.6,0,5,1.1,6.7,2.8v-2.5h3.4v19.6H142.4z M138.4,137c0.9-4-2.1-7.6-6-7.6c-3.4,0-6.1,2.8-6.1,6.1c0,3.8,3.3,6.7,7.2,6.1
		C135.9,141.2,137.8,139.3,138.4,137z"/>
</g>
<linearGradient id="SVGID_1_" gradientUnits="userSpaceOnUse" x1="71.25" y1="10.4893" x2="71.25" y2="113.3415" gradientTransform="matrix(1 0 0 -1 0 148.6)">
	<stop  offset="0" style="stop-color:#FCEE1F"/>
	<stop  offset="1" style="stop-color:#F15B2A"/>
</linearGradient>
<path class="st1" d="M122.9,49.9c-0.2-1.9-0.5-4.1-1.1-6.5c-0.6-2.4-1.6-5-2.9-7.8c-1.4-2.7-3.1-5.6-5.4-8.3
	c-0.9-1.1-1.9-2.1-2.9-3.2c1.6-6.3-1.9-11.8-1.9-11.8c-6.1-0.4-9.9,1.9-11.3,2.9c-0.2-0.1-0.5-0.2-0.7-0.3c-1-0.4-2.1-0.8-3.2-1.2
	c-1.1-0.3-2.2-0.7-3.3-0.9c-1.1-0.3-2.3-0.5-3.5-0.7c-0.2,0-0.4-0.1-0.6-0.1C83.5,3.6,75.9,0,75.9,0c-8.7,5.6-10.4,13.1-10.4,13.1
	s0,0.2-0.1,0.4c-0.5,0.1-0.9,0.3-1.4,0.4c-0.6,0.2-1.3,0.4-1.9,0.7c-0.6,0.3-1.3,0.5-1.9,0.8c-1.3,0.6-2.5,1.2-3.8,1.9
	c-1.2,0.7-2.4,1.4-3.5,2.2c-0.2-0.1-0.3-0.2-0.3-0.2c-11.7-4.5-22.1,0.9-22.1,0.9c-0.9,12.5,4.7,20.3,5.8,21.7
	c-0.3,0.8-0.5,1.5-0.8,2.3c-0.9,2.8-1.5,5.7-1.9,8.7c-0.1,0.4-0.1,0.9-0.2,1.3c-10.8,5.3-14,16.3-14,16.3c9,10.4,19.6,11,19.6,11
	l0,0c1.3,2.4,2.9,4.7,4.6,6.8c0.7,0.9,1.5,1.7,2.3,2.6c-3.3,9.4,0.5,17.3,0.5,17.3c10.1,0.4,16.7-4.4,18.1-5.5c1,0.3,2,0.6,3,0.9
	c3.1,0.8,6.3,1.3,9.4,1.4c0.8,0,1.6,0,2.4,0h0.4H80h0.5H81l0,0c4.7,6.8,13.1,7.7,13.1,7.7c5.9-6.3,6.3-12.4,6.3-13.8l0,0
	c0,0,0,0,0-0.1s0-0.2,0-0.2l0,0c0-0.1,0-0.2,0-0.3c1.2-0.9,2.4-1.8,3.6-2.8c2.4-2.1,4.4-4.6,6.2-7.2c0.2-0.2,0.3-0.5,0.5-0.7
	c6.7,0.4,11.4-4.2,11.4-4.2c-1.1-7-5.1-10.4-5.9-11l0,0c0,0,0,0-0.1-0.1l-0.1-0.1l0,0l-0.1-0.1c0-0.4,0.1-0.8,0.1-1.3
	c0.1-0.8,0.1-1.5,0.1-2.3v-0.6v-0.3v-0.1c0-0.2,0-0.1,0-0.2v-0.5v-0.6c0-0.2,0-0.4,0-0.6s0-0.4-0.1-0.6l-0.1-0.6l-0.1-0.6
	c-0.1-0.8-0.3-1.5-0.4-2.3c-0.7-3-1.9-5.9-3.4-8.4c-1.6-2.6-3.5-4.8-5.7-6.8c-2.2-1.9-4.6-3.5-7.2-4.6c-2.6-1.2-5.2-1.9-7.9-2.2
	c-1.3-0.2-2.7-0.2-4-0.2h-0.5h-0.1h-0.2h-0.2h-0.5c-0.2,0-0.4,0-0.5,0c-0.7,0.1-1.4,0.2-2,0.3c-2.7,0.5-5.2,1.5-7.4,2.8
	c-2.2,1.3-4.1,3-5.7,4.9s-2.8,3.9-3.6,6.1c-0.8,2.1-1.3,4.4-1.4,6.5c0,0.5,0,1.1,0,1.6c0,0.1,0,0.3,0,0.4v0.4c0,0.3,0,0.5,0.1,0.8
	c0.1,1.1,0.3,2.1,0.6,3.1c0.6,2,1.5,3.8,2.7,5.4s2.5,2.8,4,3.8s3,1.7,4.6,2.2c1.6,0.5,3.1,0.7,4.5,0.6c0.2,0,0.4,0,0.5,0
	c0.1,0,0.2,0,0.3,0s0.2,0,0.3,0c0.2,0,0.3,0,0.5,0h0.1h0.1c0.1,0,0.2,0,0.3,0c0.2,0,0.4-0.1,0.5-0.1c0.2,0,0.3-0.1,0.5-0.1
	c0.3-0.1,0.7-0.2,1-0.3c0.6-0.2,1.2-0.5,1.8-0.7c0.6-0.3,1.1-0.6,1.5-0.9c0.1-0.1,0.3-0.2,0.4-0.3c0.5-0.4,0.6-1.1,0.2-1.6
	c-0.4-0.4-1-0.5-1.5-0.3C88,74,87.9,74,87.7,74.1c-0.4,0.2-0.9,0.4-1.3,0.5c-0.5,0.1-1,0.3-1.5,0.4c-0.3,0-0.5,0.1-0.8,0.1
	c-0.1,0-0.3,0-0.4,0c-0.1,0-0.3,0-0.4,0s-0.3,0-0.4,0c-0.2,0-0.3,0-0.5,0c0,0-0.1,0,0,0h-0.1h-0.1c-0.1,0-0.1,0-0.2,0
	s-0.3,0-0.4-0.1c-1.1-0.2-2.3-0.5-3.4-1c-1.1-0.5-2.2-1.2-3.1-2.1c-1-0.9-1.8-1.9-2.5-3.1c-0.7-1.2-1.1-2.5-1.3-3.8
	c-0.1-0.7-0.2-1.4-0.1-2.1c0-0.2,0-0.4,0-0.6c0,0.1,0,0,0,0v-0.1v-0.1c0-0.1,0-0.2,0-0.3c0-0.4,0.1-0.7,0.2-1.1c0.5-3,2-5.9,4.3-8.1
	c0.6-0.6,1.2-1.1,1.9-1.5c0.7-0.5,1.4-0.9,2.1-1.2c0.7-0.3,1.5-0.6,2.3-0.8s1.6-0.4,2.4-0.4c0.4,0,0.8-0.1,1.2-0.1
	c0.1,0,0.2,0,0.3,0h0.3h0.2c0.1,0,0,0,0,0h0.1h0.3c0.9,0.1,1.8,0.2,2.6,0.4c1.7,0.4,3.4,1,5,1.9c3.2,1.8,5.9,4.5,7.5,7.8
	c0.8,1.6,1.4,3.4,1.7,5.3c0.1,0.5,0.1,0.9,0.2,1.4v0.3V66c0,0.1,0,0.2,0,0.3c0,0.1,0,0.2,0,0.3v0.3v0.3c0,0.2,0,0.6,0,0.8
	c0,0.5-0.1,1-0.1,1.5c-0.1,0.5-0.1,1-0.2,1.5s-0.2,1-0.3,1.5c-0.2,1-0.6,1.9-0.9,2.9c-0.7,1.9-1.7,3.7-2.9,5.3
	c-2.4,3.3-5.7,6-9.4,7.7c-1.9,0.8-3.8,1.5-5.8,1.8c-1,0.2-2,0.3-3,0.3H81h-0.2h-0.3H80h-0.3c0.1,0,0,0,0,0h-0.1
	c-0.5,0-1.1,0-1.6-0.1c-2.2-0.2-4.3-0.6-6.4-1.2c-2.1-0.6-4.1-1.4-6-2.4c-3.8-2-7.2-4.9-9.9-8.2c-1.3-1.7-2.5-3.5-3.5-5.4
	s-1.7-3.9-2.3-5.9c-0.6-2-0.9-4.1-1-6.2v-0.4v-0.1v-0.1v-0.2V60v-0.1v-0.1v-0.2v-0.5V59l0,0v-0.2c0-0.3,0-0.5,0-0.8
	c0-1,0.1-2.1,0.3-3.2c0.1-1.1,0.3-2.1,0.5-3.2c0.2-1.1,0.5-2.1,0.8-3.2c0.6-2.1,1.3-4.1,2.2-6c1.8-3.8,4.1-7.2,6.8-9.9
	c0.7-0.7,1.4-1.3,2.2-1.9c0.3-0.3,1-0.9,1.8-1.4c0.8-0.5,1.6-1,2.5-1.4c0.4-0.2,0.8-0.4,1.3-0.6c0.2-0.1,0.4-0.2,0.7-0.3
	c0.2-0.1,0.4-0.2,0.7-0.3c0.9-0.4,1.8-0.7,2.7-1c0.2-0.1,0.5-0.1,0.7-0.2c0.2-0.1,0.5-0.1,0.7-0.2c0.5-0.1,0.9-0.2,1.4-0.4
	c0.2-0.1,0.5-0.1,0.7-0.2c0.2,0,0.5-0.1,0.7-0.1c0.2,0,0.5-0.1,0.7-0.1l0.4-0.1l0.4-0.1c0.2,0,0.5-0.1,0.7-0.1
	c0.3,0,0.5-0.1,0.8-0.1c0.2,0,0.6-0.1,0.8-0.1c0.2,0,0.3,0,0.5-0.1h0.3h0.2h0.2c0.3,0,0.5,0,0.8-0.1h0.4c0,0,0.1,0,0,0h0.1h0.2
	c0.2,0,0.5,0,0.7,0c0.9,0,1.8,0,2.7,0c1.8,0.1,3.6,0.3,5.3,0.6c3.4,0.6,6.7,1.7,9.6,3.2c2.9,1.4,5.6,3.2,7.8,5.1
	c0.1,0.1,0.3,0.2,0.4,0.4c0.1,0.1,0.3,0.2,0.4,0.4c0.3,0.2,0.5,0.5,0.8,0.7c0.3,0.2,0.5,0.5,0.8,0.7c0.2,0.3,0.5,0.5,0.7,0.8
	c1,1,1.9,2.1,2.7,3.1c1.6,2.1,2.9,4.2,3.9,6.2c0.1,0.1,0.1,0.2,0.2,0.4c0.1,0.1,0.1,0.2,0.2,0.4s0.2,0.5,0.4,0.7
	c0.1,0.2,0.2,0.5,0.3,0.7c0.1,0.2,0.2,0.5,0.3,0.7c0.4,0.9,0.7,1.8,1,2.7c0.5,1.4,0.8,2.6,1.1,3.6c0.1,0.4,0.5,0.7,0.9,0.7
	c0.5,0,0.8-0.4,0.8-0.9C123,52.7,123,51.4,122.9,49.9z"/>
</svg>
;" parent="1" vertex="1">
+          <mxGeometry x="368" y="32.25" width="86.73" height="88.5" as="geometry" />
+        </mxCell>
+        <mxCell id="v9SWtdY2XGscVYblE9iN-3" value="" style="shape=image;aspect=fixed;image=data:image/svg+xml,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;" parent="1" vertex="1">
+          <mxGeometry x="211" y="39" width="75.66" height="75" as="geometry" />
+        </mxCell>
+        <mxCell id="dGs3JxAs9xNB9V_4-hfF-1" value="" style="shape=singleArrow;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="134" y="46.5" width="60" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="dGs3JxAs9xNB9V_4-hfF-2" value="" style="shape=singleArrow;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="300" y="44.5" width="60" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="dGs3JxAs9xNB9V_4-hfF-3" value="Prometheus" style="text;html=1;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
+          <mxGeometry x="219" y="117" width="60" height="30" as="geometry" />
+        </mxCell>
+        <mxCell id="dGs3JxAs9xNB9V_4-hfF-4" value="Grafana" style="text;html=1;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
+          <mxGeometry x="385" y="119" width="60" height="30" as="geometry" />
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>
diff --git a/text/images/data_flow_prometheus.drawio.png b/text/images/data_flow_prometheus.drawio.png
diff --git a/text/images/import-dashboard.png b/text/images/import-dashboard.png
diff --git a/text/images/prometheus_express.png b/text/images/prometheus_express.png
diff --git a/text/images/prometheus_targets.png b/text/images/prometheus_targets.png