本文主要是介绍【metricbeat】通过metricbeat采集prometheus指标，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
通过metricbeat采集prometheus指标
通过beat采集prometheus内的单个指标。
低版本beat只能全量
环境
# 低版本metricbeat只能全量采集
软件版本：metricbeat==8.11.1
解压
tar zxvf metricbeat-8.11.1-linux-x86_64.tar.gz -C /usr/local
配置
首先，修改metricbeat.yml，把output指定为接收地址，这里使用了logstash，原定使用kafka，但是本地kafka的版本较低，会出现发送失败问题。
output.logstash:hosts: ["192.168.113.138:5044"]
其次是修改modules.d/下的prometheus.yml.disabled为prometheus.yml，然后修改配置
cp prometheus.yml.disabled prometheus.yml
第一块是配置prometheus
#- module: prometheus
# period: 10s
# hosts: ["localhost:9090"]
# metrics_path: /metrics#metrics_filters:# include: []# exclude: []#username: "user"#password: "secret"# This can be used for service account based authorization:#bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token#ssl.certificate_authorities:# - /var/run/secrets/kubernetes.io/serviceaccount/service-ca.crt# Use Elasticsearch histogram type to store histograms (beta, default: false)# This will change the default layout and put metric type in the field name#use_types: true# Store counter rates instead of original cumulative counters (experimental, default: false)#rate_counters: true
第二块是配置Prometheus 服务器使用 remote_write 选项发送的指标
# Metrics sent by a Prometheus server using remote_write option
#- module: prometheus
# metricsets: ["remote_write"]
# host: "localhost"
# port: "9201"# Secure settings for the server using TLS/SSL:#ssl.certificate: "/etc/pki/server/cert.pem"#ssl.key: "/etc/pki/server/cert.key"# Use Elasticsearch histogram type to store histograms (beta, default: false)# This will change the default layout and put metric type in the field name#use_types: true# Store counter rates instead of original cumulative counters (experimental, default: false)#rate_counters: true# Define patterns for counter and histogram types so as to identify metrics' types according to these patterns#types_patterns:# counter_patterns: []# histogram_patterns: []
第三块才是我们用到的，将使用 PromQL 收集指标
- module: prometheusmetricsets: ["query"]hosts: ["localhost:9090"]period: 10squeries:- name: "instant_vector"path: "/api/v1/query"params:query: "sum(rate(prometheus_http_requests_total[1m]))"- name: "range_vector"path: "/api/v1/query_range"params:query: "up"start: "2019-12-20T00:00:00.000Z"end: "2019-12-21T00:00:00.000Z"step: 1h- name: "scalar"path: "/api/v1/query"params:query: "100"- name: "string"path: "/api/v1/query"params:query: "some_value"
效果
日志平台接收到可以看到
点开后发现有很多字段，最主要的是metricset_name，是配置query，采集回来的值字段为prometheus_query_scalar，以此类推，会有prometheus_query_string和prometheus_query_instant_vector
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