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Mackerel
Kyoto, Japan
What it is
Mackerel is a SaaS service for monitoring servers and cloud-era infrastructure with teams. Installing its agent on a server starts monitoring, and hosts can be arranged into services and roles. The service visualizes host metrics and user-defined measures such as response time, sales, and page views. Monitoring options include combining metrics, tracking predicted values, and machine-learning anomaly detection. Integrations cover Amazon Web Services, Microsoft Azure, and Google Cloud. For containers, its agent treats an Amazon ECS task or Kubernetes pod as a host. Users can extend monitoring with open-source plugins, APIs, and the mkr command-line tool. Customer Reliability Engineers can guide implementation and use; standard-plan technical support is email-only, with free contact during business-day hours of 10:00–19:00. A 14-day trial includes Standard-plan functions and a 100M-span allowance. The free plan includes five standard and micro hosts total, 500 metrics, one-day data retention, 10 monitoring rules, one dashboard, and up to 5M trace spans. Paid standard-host usage is 2,180 yen, tax included, per host month.
For and against
For
- Organizes monitored hosts into services and roles
- Tracks user-defined service metrics
- Integrates with AWS, Azure, and Google Cloud
- Supports Amazon ECS and Kubernetes workloads
- 14-day trial includes Standard-plan functions
Against
- Free plan retains data for one day
- Free plan includes one custom dashboard
- Standard-plan technical support is email-only
The verdict
Mackerel combines host and service monitoring with cloud and container integrations. Compare the free-plan limits and per-host Standard billing with the metrics and retention your team needs.
Who it suits
Mackerel suits teams monitoring servers, cloud services, or container workloads. It may also fit teams that want to track custom service metrics and extend monitoring with plugins or APIs.
Plans and prices
Free
5 standard and micro hosts total · 500 metrics · 1 day data retention · 10 monitoring rules
Read 5 Oct 2026 · en.mackerel.io
Standard
460 days data retention · 100 monitoring rules · 100 custom dashboards · unlimited users
Read 5 Oct 2026 · en.mackerel.io
Standard (micro host)
30 metrics per micro host
Read 23 Sep 2026 · en.mackerel.io
On the record
- Clouds
- Cloud integrations include Amazon Web Services, Microsoft Azure, and Google Cloud.en.mackerel.io · read 5 Oct 2026
- Company
- Mackerel is provided by Hatena Co., Ltd.en.mackerel.io · read 5 Oct 2026
- Containers
- The container agent monitors workloads on Amazon ECS and Kubernetes by treating a task or pod as a host.en.mackerel.io · read 5 Oct 2026
- Extensibility
- Users can extend monitoring with open-source plugins, APIs, and the mkr command-line tool.en.mackerel.io · read 5 Oct 2026
- Metrics
- The service can visualize host metrics and user-defined service metrics, including response time, sales, and page views.en.mackerel.io · read 5 Oct 2026
- Monitoring
- Mackerel supports combining metrics, monitoring predicted values, and machine-learning anomaly detection.en.mackerel.io · read 5 Oct 2026
- Product
- Mackerel is a SaaS server monitoring service designed for cloud-era infrastructure and team-based monitoring.en.mackerel.io · read 5 Oct 2026
- Setup
- Installing the monitoring agent on a server starts monitoring, and Mackerel groups hosts into services and roles.en.mackerel.io · read 5 Oct 2026
- Support
- Customer Reliability Engineers provide technical support and can guide customers through implementation and use.en.mackerel.io · read 5 Oct 2026
- Support limits
- The pricing page describes standard-plan technical support as email-only and says support contact is free during business-day operating hours of 10:00–19:00.en.mackerel.io · read 5 Oct 2026
- Trial
- The two-week free trial provides Standard-plan functions, with a trial trace-span allowance of 100M spans.en.mackerel.io · read 5 Oct 2026
