November 2022
Beginner to intermediate
346 pages
11h
Chinese
Content preview from Kafka权威指南（第2版）
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252
｜
第
13
章
第三方供应商的服务包已经包含了监控代理、指标收集点、存储、图形可视化和告警。它
们还能进一步帮你搭建符合要求的监控代理。
找到
JMX
端口
JMX
端口是
broker
配置信息的一部分
，保存在
ZooKeeper
中，如果监控系
统要直接连到
Kafka
的
JMX
端口
，那么可以先从
ZooKeeper
获取端口信息。
/brokers/ids/<ID>
节点包含了
broker
的配置信息（
JSON
格式），其中就有
hostname
和
jmx_port
。不过需要注意的是，出于安全方面的考虑，
Kafka
默
认禁用了远程
JMX
。如果要启用它，则必须保护好端口。这是因为
JMX
不
仅可以作为查看应用程序状态的窗口，它还允许执行代码。强烈建议使用嵌
入应用程序中的
JMX
指标代理。
非应用程序指标
并不是所有的指标都来自
Kafka
。我们能够获取到的指标通常可以分为
5
类，
表
13-1
列出
了这
5
种类别。
表13-1：指标来源
类别 描述
应用程序指标 这些是可以通过
JMX
接口获取到的
Kafka
指标
日志 来自
Kafka
的另一种监控数据
。因为日志是文本或结构化数据，不仅仅是数字，所以需
要进行额外的处理
基础设施指标 这些指标来自部署在
Kafka
前面的系统
，这些系统也处在请求路径中，并在你的可控范
围之内，比如负载均衡器就属于这一类
外部工具指标 这些数据来自
Kafka
以外的工具
，类似于客户端，但在你的直接控制之下，它们的用途
与普通的
Kafka
客户端不一样，比如
Kafka Monitor
就属于这一类
客户端指标 这些指标来自与集群相连的
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.