> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nebius.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Observability agents

Nebius AI Cloud Observability uses two agents for different purposes:

* [Monitoring agent](/observability/agents/monitoring-agent) collects system metrics from virtual machines and Managed Service for Kubernetes® nodes for visualization on preconfigured dashboards. It can also [collect journald logs from VMs](/observability/logs/journald).

* [Nebius Observability Agent for Kubernetes](/observability/agents/nebius-o11y-agent) ingests logs from Managed Service for Kubernetes clusters into Observability.

See the detailed comparison of the two agents below:

| Feature              | **Nebius Observability Agent for Kubernetes**                                | **Monitoring agent**                                                                   |
| -------------------- | ---------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| **Purpose**          | Ingests logs from Managed Service for Kubernetes clusters into Observability | Collects system-level metrics (CPU, RAM, GPU, etc.) and journald logs from Compute VMs |
| **Deployed on**      | Managed Service for Kubernetes clusters                                      | Compute virtual machines and Managed Service for Kubernetes nodes                      |
| **Collected data**   | Application and infrastructure logs                                          | System metrics (e.g., GPU, vCPU, memory, OS) and journald logs                         |
| **Installation**     | Manual (via Helm chart)                                                      | Automatic (preinstalled on new VMs and Managed Kubernetes nodes)                       |
| **Components**       | Helm chart with the log collection agent                                     | `nebius-observability-agent`, `nebius-observability-agent-updater`                     |
| **Data enrichment**  | Adds metadata: cluster ID, pod name, container image tag, etc.               | Adds labels: resource ID, project ID, etc.                                             |
| **Data destination** | Observability Logs                                                           | Observability Metrics (web console dashboards)                                         |
| **Management**       | Version controlled via Helm and customizable installation                    | Managed via SSH, supports disabling updates                                            |
| **Use case**         | Centralized log ingestion for observability and troubleshooting              | Visual monitoring of infrastructure resource usage                                     |