Prometheus+blackbox_exporter监控url(get、post)及ssl证书

下载

prometheus、blackbox_exporter：https://prometheus.io/download/
解压后可以看到prometheus.yml、blackbox.yml

启动

nohub ./prometheus --config.file=prometheus.yml &
nohub ./blackbox_exporter–config.file=blackbox.yml &

配置

vim prometheus.yml

- job_name: 'blackbox' #自定义job_namescrape_interval: 10s  #监测时间默认15smetrics_path: /probe  #指标，默认为metrics，这边采用probeparams:module: [http_2xx] #blackbox.yml中的模块（get）static_configs:- targets:- https://baidu.com  #监听地址relabel_configs:- source_labels: [__address__]target_label: __param_target- source_labels: [__param_target]target_label: instance- target_label: __address__replacement: 192.168.223.146:9115  #blackbox服务地址- job_name: 'blackbox-post'scrape_interval: 30smetrics_path: /probeparams:module: [http_post_2xx]  #此模块用于监听post请求static_configs:- targets:- https://test.com/labels:url_name: "POST 用户查询"  #标签用于区分relabel_configs:- source_labels: [__address__]target_label: __param_target- source_labels: [__param_target]target_label: instance- target_label: __address__replacement: 192.168.223.146:9115

vim blackbox.yml
需要修改该模块监听post请求 http_post_2xx

 http_post_2xx:prober: httptimeout: 30shttp:method: POSTheaders:Content-Type: application/jsontoken: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpYXQiOjE2Nzk4OTYzMTEsImV4cCI6MTY3OTk4MjcxMSwicGlkIjoxLCJwbmFtZSI6Iui_kOiQpeaAu-mDqCIsImVpZCI6MSwidWlkIjoxLCJyaWQiOjEsInV0eXBlIjoiMSIsIm5hbWUiOiLov5DokKXmgLvpg6giLCJjbGllbnQiOjF9.4ev-OoYsfW5DZ9xaDFMyfQw6qTbuah99yNgoo26FKMgbody: "isnew=1"  #body： {"isnew":"1"}

配置告警规则

下面是两个告警规则，因为有的url接口就是慢，也不影响业务，所以统一配置成超过1秒告警，会导致某些时间频繁报警，所以可以根据 =～ 和 = 的方法配置某一个规则大于1.5秒才告警；
vim /prometheus/rules/http_export-alert-rules.yml

groups:- name: nginx状态-监控告警rules:- alert: 状态码检测expr: probe_http_status_code{job="blackbox"} != 200for: 0mlabels:serverity: warningstatus: 非常严重annotations:summary: "请求URL状态码非200"description: "请求{{$.Labels.instance}}状态码非200"- alert: 证书过期时间检测expr: probe_ssl_earliest_cert_expiry {job="blackbox"} -time() < 86400 * 30for: 5mlabels:serverity: warningstatus: 警告annotations:summary: "证书过期时间不足30天"description: "{{$.Labels.instance}}证书还有30天到期，请及时更换"- alert: 页面响应时间检测expr: probe_duration_seconds{job="blackbox"} >= 1for: 1mlabels:serverity: warningstatus: 警告annotations:summary: "页面响应时间超过1秒"description: "{{$.Labels.instance}}页面响应时间超过1秒"- alert: post页面响应时间检测expr: probe_duration_seconds{job="blackbox-post"} >= 1for: 1mlabels:serverity: warningstatus: 警告annotations:summary: "{{$.Labels.instance}}页面响应时间超过1秒"description: "服务:{{$.Labels.url_name}}---响应时间>=1s,(当前:{{$value}})"

监控模板

模板直通车

Grafana模板编码 8587