metrics | 易学教程

Prometheus only scrapes one pod

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问题 I'm using Prometheus to scrape metrics from my pods. The application I'm interested in is replicated a couple of times with one service providing access. Prometheus uses this service to scrape the metrics. In my app the metrics are setup as follows: import * as Prometheus from 'prom-client'; const httpRequestDurationMicroseconds = new Prometheus.Histogram({ name: 'transaction_amounts', help: 'Amount', labelNames: ['amount'], buckets: [0, 5, 15, 50, 100, 200, 300, 400, 500, 10000], }); const

Prometheus学习笔记（1）原理篇

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目录一、Prometheus简介和架构一、Prometheus简介和架构 Prometheus 是由 SoundCloud 开源监控告警解决方案。架构图如下：如上图，Prometheus主要由以下部分组成： Prometheus Server：用于抓取和存储时间序列化数据 Exporters：主动拉取数据的插件 Pushgateway：被动拉取数据的插件 Altermanager：告警发送模块 Prometheus web UI：界面化，也包含结合Grafana进行数据展示或告警发送 prometheus本身是一个以进程方式启动，之后以多进程和多线程实现监控数据收集、计算、查询、更新、存储的这样一个C/S模型运行模式。了解以下疑问信息 1、Prometheus是如何存储数据的？？？ prometheus采用time-series(时间序列)方式，存储在本地硬盘 prometheus本地T-S数据库以每2小时间隔来分block(块)存储，每个块又分为多个chunk文件，chunk文件用来存放采集的数据的T-S（time-series）数据，metadata和索引文件； index文件是对metrics和labels进行索引之后存储在chunk中，chunk是作为基本存储单位，index和metadata作为子集； prometheus平时采集到的数据先存放在内存之中

Cannot include Prometheus metrics in spring boot 2 (version 2.0.0.M7)

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问题 Cannot include Prometheus metrics in spring boot 2 (version 2.0.0.M7) project. According micrometer docs added spring-boot-starter-actuator dependency and in application.yaml added management.endpoints.web.expose: prometheus but when calling /actuator/prometheus get { "timestamp": 1518159066052, "path": "/actuator/prometheus", "message": "Response status 404 with reason \"No matching handler\"", "status": 404, "error": "Not Found" } Tell me please why I wasn't getting prometheus metrics? 回答1:

What would be a good way to measure the size of a JSP project?

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问题 Given an existing JSP project, I would like to get a feel for the complexity/size of the "view" portion of the project. Here's what I've done so far: Pulled the list of JSP's that have been compiled from the production server within the last x months (that eliminates 'dead' jsps). Wrote a quick scanner to find the JSP fragment files that are imported into the compiled pages. Pulled the size of the file and the timestamp off the file system. So now I have a list of pages and the fragments

exporting spark worker/executor metrics to prometheus using jmxagent

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问题 I have followed the instructions here to enable the metrics export to Prometheus for spark. In order to enable metrics export not just from the job, but also from master and workers, I have enabled the jmx agent for all of spark driver, master, worker, and executor. This causes a problem since spark worker and executor are collocated on the same machine and, thus, I need to pass in different jmx ports to them. This is not a problem if I have a 1-1 relationship between spark workers and

What is a Swamp Diagram?

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问题 Someone told me about swamp diagrams explaning that they were useful to predict code quality by measuring the rate of incoming defects and outgoing fixes on a given product. Unfortunately, I am unable to find additional information on those diagrams and I am wondering if it is a jargon term specific to one company. Can you explain what a swamp diagram is? 回答1: You can see an example of a "swamp diagram" in this article about the "THE COMMISSIONING AND PERFORMANCE CHARACTERISTICS OF CESR",

Algorithm Analysis tool for java [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I am looking for an algorithm analysis tool for java that can calculate Big 0 of a function. Ideal I would like to make it part of my build process, along side of my other code metrics tool. Even after searching on google I am unable to find any opensource of commercial tool. Any suggestion would be welcome

IoU for semantic segmentation implementation in python/caffe per class

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问题 Is there any recommendable per class IoU(intersection over union) per pixel accuracy(different from bounding box) implementation.I am using caffe and managed to get the mean IoU but i am having difficulty in doing IoU for per class accuracy.I would appreciate a lot if someone could point out a good implementation in any language 回答1: so far this the only close semantic segmentation with multiple pixel label i ve seen so far here 来源： https://stackoverflow.com/questions/44041096/iou-for

How to define a custom accuracy in Keras to ignore samples with a particular gold label?

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问题 I want to write in Keras a custom metric (I am using the tensorflow backend) equivalent to categorical_accuracy , but where the output for samples with a particular gold label (in my case 0, from y_true) have to be ignored. For example, if my outputs were: Pred 1 - Gold 0 Pred 1 - Gold 1 The accuracy would be 1, since samples with the gold label 0 have to be ignored. That said, the function I wrote (and that is not giving the expected results) is: def my_accuracy(y_true, y_pred): mask = K.any

Spring Boot Actuator/Micrometer Metrics Disable Some

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问题 Is there a way to turn off some of the returned metric values in Actuator/Micrometer? Looking at them now I'm seeing around 1000 and would like to whittle them down to a select few say 100 to actually be sent to our registry. 回答1: Meter filters can help in 3 ways that have been discussed with the Micrometer slack channel: Disabling metrics Combining dimensions High cardinality capping filter Micrometer comes with the first type of meter filter built in. It also support hierarchical enabling