Netdata可观测性平台

Getting Started

You can install Netdata on all major operating systems. To begin:

1. Install Netdata

Choose your platform and follow the installation guide:

• Linux Installation
• macOS
• FreeBSD
• Windows
• Docker Guide
• Kubernetes Setup

[!NOTE] You can access the Netdata UI at http://localhost:19999 (or http://NODE:19999 if remote).

Live Demo Sites

<p align="center"> <b>See Netdata in action</b><br/> <a href="https://frankfurt.netdata.rocks"><b>FRANKFURT</b></a> | <a href="https://newyork.netdata.rocks"><b>NEWYORK</b></a> | <a href="https://atlanta.netdata.rocks"><b>ATLANTA</b></a> | <a href="https://sanfrancisco.netdata.rocks"><b>SANFRANCISCO</b></a> | <a href="https://toronto.netdata.rocks"><b>TORONTO</b></a> | <a href="https://singapore.netdata.rocks"><b>SINGAPORE</b></a> | <a href="https://bangalore.netdata.rocks"><b>BANGALORE</b></a> <br/> <i>These demo clusters run with default configuration and show real monitoring data.</i> <br/> <i>Choose the instance closest to you for the best performance.</i> </p>

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2. Configure Collectors

Netdata auto-discovers most metrics, but you can manually configure some collectors:

• All collectors
• SNMP monitoring

3. Configure Alerts

You can use hundreds of built-in alerts and integrate with:

email, Slack, Telegram, PagerDuty, Discord, Microsoft Teams, and more.

[!NOTE] Email alerts work by default if there's a configured MTA.

4. Configure Parents

You can centralize dashboards, alerts, and storage with Netdata Parents:

• Streaming Reference

[!NOTE] You can use Netdata Parents for central dashboards, longer retention, and alert configuration.

FAQ

<details> <summary><strong>Is Netdata secure?</strong></summary> <br/>

Yes. Netdata follows OpenSSF best practices, has a security-first design, and is regularly audited by the community.

• Security design
• Security policies and advisories

</details>

<details> <summary><strong>Does Netdata use a lot of resources?</strong></summary> <br/>

No. Even with ML and per-second metrics, Netdata uses minimal resources.

• \~5% CPU and 150MiB RAM by default on production systems
• <1% CPU and \~100MiB RAM when ML and alerts are disabled and using ephemeral storage
• Parents scale to millions of metrics per second with appropriate hardware

You can use the Netdata Monitoring section in the dashboard to inspect its resource usage.

</details>

<details> <summary><strong>How much data retention is possible?</strong></summary> <br/>

As much as your disk allows.

With Netdata you can use tiered retention:

• Tier 0: per-second resolution
• Tier 1: per-minute resolution
• Tier 2: per-hour resolution

These are queried automatically based on the zoom level. </details>

<details> <summary><strong>Can Netdata scale to many servers?</strong></summary> <br/>

Yes. With Netdata you can:

• Scale horizontally with many Agents
• Scale vertically with powerful Parents
• Scale infinitely via Netdata Cloud

You can use Netdata Cloud to merge many independent infrastructures into one logical view.

</details>

<details> <summary><strong>Is disk I/O a concern?</strong></summary> <br/>

No. Netdata minimizes disk usage:

• Metrics are flushed to disk every 17 minutes, spread out evenly
• Uses direct I/O and compression (ZSTD)
• Can run entirely in RAM or stream to a Parent

You can use alloc or ram mode for no disk writes.

</details>

<details> <summary><strong>How is Netdata different from Prometheus + Grafana?</strong></summary> <br/>

With Netdata you get a complete monitoring solution—not just tools.

• No manual setup or dashboards needed
• Built-in ML, alerts, dashboards, and correlations
• More efficient and easier to deploy

Performance comparison

</details>

<details> <summary><strong>How is Netdata different from commercial SaaS tools?</strong></summary> <br/>

With Netdata you can store all metrics on your infrastructure—no sampling, no aggregation, no loss.

• High-resolution metrics by default
• ML per metric, not shared models
• Unlimited scalability without skyrocketing cost

</details>

<details> <summary><strong>Can Netdata run alongside Nagios, Zabbix, etc.?</strong></summary> <br/>

Yes. You can use Netdata together with traditional tools.

With Netdata you get:

• Real-time, high-resolution monitoring
• Zero configuration and auto-generated dashboards
• Anomaly detection and advanced visualization

</details>

<details> <summary><strong>What if I feel overwhelmed?</strong></summary> <br/>

You can start small:

• Use the dashboard's table of contents and search
• Explore anomaly scoring ("AR" toggle)
• Create custom dashboards in Netdata Cloud

Docs and guides

</details>

<details> <summary><strong>Do I have to use Netdata Cloud?</strong></summary> <br/>

No. Netdata Cloud is optional.

Netdata works without it, but with Cloud you can:

• Access remotely with SSO
• Save dashboard customizations
• Configure alerts centrally
• Collaborate with role-based access

</details>

<details> <summary><strong>What telemetry does Netdata collect?</strong></summary> <br/>

Anonymous telemetry helps improve the product. You can disable it:

• Add --disable-telemetry to the installer, or
• Create /etc/netdata/.opt-out-from-anonymous-statistics and restart Netdata

Telemetry helps us understand usage, not track users. No private data is collected.

</details>

<details> <summary><strong>Who uses Netdata?</strong></summary> <br/>

You'll join users including:

• Major companies (Amazon, ABN AMRO Bank, Facebook, Google, IBM, Intel, Netflix, Samsung)
• Universities (NYU, Columbia, Seoul National, UCL)
• Government organizations worldwide
• Infrastructure-intensive organizations
• Technology operators
• Startups and freelancers
• SysAdmins and DevOps professionals

</details>

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