gitlab有哪些metrics

默认有哪些指标收集job

prometheus.yml文件中定义了默认的job。配置文件在prometheus数据目录下 ，gitlab.rb配置文件中有定义位置：

prometheus['home'] = ''

默认job；访问方式：

• gitaly；访问方式：ip:9236/metrics
• gitlab sidekiq；访问方式：ip:8082/metrics
• gitlab workhorse；访问方式：ip:9229/metrics
• gitlab rails(puma)；访问方式：127.0.0.1:8080/-/metrics，ip:(80/443)/-/metrics
• gitlab_exporter；访问方式：ip:9168/metrics
• nginx；访问方式：ip:8060/metrics
• prometheus；访问方式：ip:9090/metrics
• node_exporter；访问方式：ip:9100/metrics
• redis_exporter；访问方式：ip:9121/metrics
• postgres_exporter；访问方式：ip:9187/metrics
• kubernetes相关

gitlab.rb配置文件修改监听

gitlab配置文件，prometheus、所有的监控exporter都是监听在127.0.0.1的无法直接访问到。如果需要迁移到外部prometheus，可以通过修改配置文件，将指标采集器监听到0.0.0.0上。

#gitlay，/metrcis访问监控指标
gitaly['prometheus_listen_addr'] = "0.0.0.0:9236"
 
#sidekiq_exporter，/metrics访问监控指标
sidekiq['listen_address'] = '0.0.0.0'
sidekiq['listen_port'] = 8082
 
#gitlab workhorse，/metrics访问监控指标
gitlab_workhorse['prometheus_listen_addr'] = "0.0.0.0:9229"
 
#puma(gitlab_rails)，/metrcis访问监控指标
puma['listen'] = '0.0.0.0'
puma['port'] = 8080
 
#nginx，监控8060端口/metrcis
#默认在/var/opt/gitlab/nginx/conf/nginx-status.conf配置文件中配置监听
 
#prometheus服务，/metrics访问监控指标
prometheus['listen_address'] = '0.0.0.0:9090'
 
#node_exporter(_database/sidekiq/ruby)
node_exporter['listen_address'] = '0.0.0.0:9100'
 
#gitlab_exporter
gitlab_exporter['listen_address'] = '0.0.0.0'
gitlab_exporter['listen_port'] = '9168'
 
#redis_exporter
redis_exporter['listen_address'] = '0.0.0.0:9121'
 
#postgres_exporter
postgres_exporter['listen_address'] = '0.0.0.0:9187'
 
#可以使用true/false控制是否需要获取k8s监控指标
prometheus['monitor_kubernetes'] = false

外部获取指标的权限配置

gitlab内嵌prometheus不需要配置下述权限。内嵌prometheus通过8080端口/-/metrcis获取rails指标；通过127.0.0.1:8060/metrics获取nginx指标。

prometheus服务器白名单配置（不配置不能通过80/443端口/-/metrics获取Rails指标）

gitlab_rails['monitoring_whitelist'] = ['127.0.0.0/8', '192.168.0.1']

nginx指标权限（不配置不能通过8060端口/metrics获取nginx指标）

nginx['status']['options'] = {
      "server_tokens" => "off",
      "access_log" => "off",
      "allow" => "192.168.0.1",
      "deny" => "all",
}

使用外部prometheus的job配置示例

scrape_configs:
  - job_name: nginx
    static_configs:
      - targets:
        - 1.1.1.1:8060
  - job_name: redis
    static_configs:
      - targets:
        - 1.1.1.1:9121
  - job_name: postgres
    static_configs:
      - targets:
        - 1.1.1.1:9187
  - job_name: node
    static_configs:
      - targets:
        - 1.1.1.1:9100
  - job_name: gitlab-workhorse
    static_configs:
      - targets:
        - 1.1.1.1:9229
  - job_name: gitlab-rails
    metrics_path: "/-/metrics"
    scheme: https
    static_configs:
      - targets:
        - 1.1.1.1
  - job_name: gitlab-sidekiq
    static_configs:
      - targets:
        - 1.1.1.1:8082
  - job_name: gitlab_exporter_database
    metrics_path: "/database"
    static_configs:
      - targets:
        - 1.1.1.1:9168
  - job_name: gitlab_exporter_sidekiq
    metrics_path: "/sidekiq"
    static_configs:
      - targets:
        - 1.1.1.1:9168
  - job_name: gitlab_exporter_process
    metrics_path: "/process"
    static_configs:
      - targets:
        - 1.1.1.1:9168
  - job_name: gitaly
    static_configs:
      - targets:
        - 1.1.1.1:9236

gitlab-rails job，在示例中默认是可以使用https协议获取指标。如果不支持https协议，则将scheme: https改为scheme: http，则会通过80端口获取metrics。

参考文档

Monitoring GitLab with Prometheus | GitLabDocumentation for GitLab Community Edition, GitLab Enterprise Edition, Omnibus GitLab, and GitLab Runner.https://docs.gitlab.com/15.3/ee/administration/monitoring/prometheus/index.html#gitlab-metrics