GitLab

Monitor GitLab — request throughput, SQL query latency, cache hit rates, Gitaly connections, and Sidekiq job queues — using GitLab's built-in Prometheus metrics endpoint.

Pattern: GitLab /metrics → Prometheus scrape → xScaler remote_write

---

Prerequisites

• GitLab 13+ (self-managed)
• Admin access to enable metrics
• xScaler tenant credentials (token + tenant ID)

---

Enable Metrics

In GitLab Admin → Settings → Metrics and profiling, enable:

• Prometheus metrics (exposes /-/metrics)
• Sidekiq metrics (exposes :8082/metrics)

Or in gitlab.rb:

gitlab_rails['monitoring_whitelist'] = ['0.0.0.0/0']
prometheus['enable'] = true

Run gitlab-ctl reconfigure.

---

Option A — Prometheus

scrape_configs:
  - job_name: gitlab
    metrics_path: /-/metrics
    params:
      token: [YOUR_ADMIN_TOKEN]
    static_configs:
      - targets: ['gitlab.example.com:443']
    scheme: https

  - job_name: gitlab_sidekiq
    static_configs:
      - targets: ['localhost:8082']

remote_write:
  - url: https://euw1-01.m.xscalerlabs.com/api/v1/push
    authorization:
      credentials: <token>
    headers:
      X-Scope-OrgID: <tenant-id>

---

Option B — Grafana Alloy

prometheus.scrape "gitlab" {
  targets      = [{"__address__" = "gitlab.example.com:443"}]
  metrics_path = "/-/metrics"
  scheme       = "https"
  forward_to   = [prometheus.remote_write.xscaler.receiver]
}

prometheus.scrape "gitlab_sidekiq" {
  targets    = [{"__address__" = "localhost:8082"}]
  forward_to = [prometheus.remote_write.xscaler.receiver]
}

prometheus.remote_write "xscaler" {
  endpoint {
    url = "https://euw1-01.m.xscalerlabs.com/api/v1/push"
    authorization {
      type        = "Bearer"
      credentials = "<token>"
    }
    headers = { "X-Scope-OrgID" = "<tenant-id>" }
  }
}

---

Option C — OpenTelemetry Collector

receivers:
  prometheus:
    config:
      scrape_configs:
        - job_name: gitlab
          metrics_path: /-/metrics
          static_configs:
            - targets: ['gitlab.example.com:443']
          scheme: https

processors:
  batch:
    timeout: 10s

exporters:
  otlphttp/xscaler:
    endpoint: https://euw1-01.m.xscalerlabs.com
    headers:
      Authorization: "Bearer <token>"
      X-Scope-OrgID: "<tenant-id>"
    compression: gzip

service:
  pipelines:
    metrics:
      receivers:  [prometheus]
      processors: [batch]
      exporters:  [otlphttp/xscaler]

---

Logs

Collect GitLab Rails production log and Nginx access log. Add the following to your Alloy config:

local.file_match "gitlab_logs" {
  path_targets = [{
    __address__ = "localhost",
    __path__    = "/var/log/gitlab/gitlab-rails/production.log",
    instance    = constants.hostname,
    job         = "integrations/gitlab",
  }]
}

loki.source.file "gitlab_logs" {
  targets    = local.file_match.gitlab_logs.targets
  forward_to = [loki.write.xscaler.receiver]
}

loki.write "xscaler" {
  endpoint {
    url = "https://euw1-01.l.xscalerlabs.com/api/v1/logs/push"

    http_client_config {
      authorization {
        type        = "Bearer"
        credentials = env("XSCALER_TOKEN")
      }
    }

    headers = { "X-Scope-OrgID" = env("XSCALER_TENANT_ID") }
  }
}

Key metrics

Metric	Description
gitlab_transaction_duration_seconds	Request duration by controller action
gitlab_sql_duration_seconds	SQL query duration
gitlab_cache_misses_total	Cache misses by store
gitaly_connections_total	Gitaly gRPC connections
gitlab_workhorse_http_requests_total	Workhorse HTTP requests
sidekiq_jobs_processed_total	Sidekiq jobs completed
sidekiq_queue_size	Sidekiq queue depth