Actions82
- Device Actions
- Access Points Actions
- Get All Access Points
- Get Access Point Details
- Get Top APs by Wireless Usage
- Get AP Throughput Trends
- Get AP CPU Utilization
- Get AP Memory Utilization
- Get AP Power Consumption
- Get AP Radio Details
- Get Radio Performance
- Get APs with Performance Issues
- Get AP Port Frame Trends
- Get All Radios
- Get Radio Channel Utilization
- Get Radio Channel Quality
- Get Radio Noise Floor
- Get Radio Transmission Info
- Get AP Port CRC Errors
- Get AP Port Collision Errors
- Get AP Radio Throughput Trend
- Get AP Port Throughput Trend
- Get AP Radios List
- Get AP Ports List
- Get All WLANs
- Get WLAN by Name
- Get AP WLANs List
- Get AP WLAN Throughput Trend
- Get AP Tunnels List
- Get AP Tunnel Details
- Get AP Tunnel Throughput Trend
- Get AP Tunnel Packet Loss Trend
- Get AP Tunnel Jitter Trend
- Get AP Tunnel Latency Trend
- Get AP Tunnel MOS Score Trend
- Get WLAN Throughput Trend
- Client Actions
- Site Actions
- Site Health Actions
- Gateway Actions
- List Gateways
- Gateway Details
- Gateway Cluster Leader Details
- Gateway Cluster VLAN Mismatch Summary
- Gateway Cluster Connectivity Graph
- Gateway VLAN Detail
- List Gateway Cluster Members
- Gateway Tunnel Detail
- List Gateway Wired Interfaces
- List Gateway Cluster Tunnels
- List Gateway VLANs
- List Gateway LAN Tunnels
- List Gateway WAN Interfaces
- Get Gateway CPU Utilization Trend
- Get Gateway Memory Utilization Trend
- Get Gateway LAN Tunnel Throughput Trend
- Get Gateway LAN Tunnel Status Trend
- Get Cluster Capacity Trend
- Get Cluster Member Capacity Trend
- Get Gateway Interface Throughput Trend
- Get Summary of Cluster Tunnel Health
- Get Summary of Cluster Tunnel Status
- Get Summary of Gateway Tunnel Health
- Get Gateway WAN Availability Trend
- Get Gateway VPN Availability Trend
- Get Gateway Port Frames Trend
- Get Gateway Port Frames Errors Trend
- Get Gateway Port Frames Packets Trend
- Get Gateway Tunnel Dropped Packets Trend
- List Gateway WAN Tunnels
- Gateway WAN Tunnel Detail
- Get Summary of Gateway WAN Tunnel Health
- Get Details of Gateway Uplink
- Get Gateway Uplink Throughput Trend
- Get Gateway WAN Compression Trends for Uplink
- List Gateway Uplink Probes
- List Gateway Uplink Performance Trends
- Get Gateway Uplink Modem Stats
- Get WAN Availability Trends of Gateway Uplink
- Get VPN Availability Trends of Gateway Uplink
Overview
This node interacts with the Aruba Central Next Gen API to retrieve monitoring data related to gateway clusters. Specifically, the Get Cluster Member Capacity Trend operation fetches capacity trend metrics for members of a specified gateway cluster over a given time range. This is useful for network administrators who want to analyze resource usage trends (such as bandwidth or processing capacity) across cluster members to optimize performance and plan capacity upgrades.
Practical examples include:
- Monitoring how individual gateways in a cluster handle traffic load over time.
- Detecting unusual spikes or drops in capacity that might indicate issues.
- Comparing capacity trends between cluster members to balance loads.
Properties
| Name | Meaning |
|---|---|
| Debug Mode | Whether to enable detailed debug logs for troubleshooting. |
| Domain | API domain to interact with. Options: "Monitoring" (monitor devices, clients, sites), "Configuration" (configure devices, groups, profiles). For this operation, "Monitoring" is used. |
| Serial Number | Gateway serial number. Required when querying specific gateway details under the monitoring domain. Not directly used in this operation but part of the gateway-related properties. |
| Cluster Name | Gateway cluster name. Identifies which cluster's member capacity trend to retrieve. |
| Time Range | Optional timestamp range for data retrieval. Includes Start Time and End Time in ISO 8601 format. Defaults to last 3 hours if not specified. |
Output
The node outputs JSON data representing the capacity trend metrics for each member of the specified gateway cluster within the requested time range. The structure typically includes timestamps and corresponding capacity values per cluster member, allowing visualization or further analysis of capacity changes over time.
If binary data were output, it would represent raw metric files or reports, but this operation focuses on JSON-formatted trend data.
Dependencies
- Requires an active connection to Aruba Central Next Gen API.
- Needs an API authentication token configured via n8n credentials (an OAuth2 or API key credential).
- Network access to Aruba Central endpoints.
- Proper permissions to query monitoring data for the specified cluster.
Troubleshooting
Common Issues:
- Invalid or missing cluster name will cause the API call to fail.
- Incorrect or expired API credentials will result in authentication errors.
- Specifying an invalid time range (e.g., start time after end time) may cause no data to be returned or errors.
- Network connectivity problems can prevent successful API calls.
Error Messages:
- "Unknown error in node execution": Generic catch-all error; check debug logs if enabled.
- Authentication failures: Verify API credentials and permissions.
- Validation errors: Ensure required fields like cluster name are provided and correctly formatted.
Enabling Debug Mode helps capture detailed logs to diagnose issues.
Links and References
- Aruba Central Next Gen API Documentation (for monitoring domain and cluster metrics)
- n8n documentation on creating and configuring API credential nodes
- ISO 8601 date/time format specification for time range inputs