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NAT Gateway:Monitoring and logging

Last Updated:Jun 25, 2026

Alibaba Cloud provides a variety of services for monitoring and logging, such as Network Intelligence Service (NIS), CloudMonitor, and Cloud Config. You can use these services to monitor the resource usage and workload status of NAT gateways in real time, respond promptly to alerts, and ensure the availability and stability of your NAT Gateway resources and workloads.

Troubleshooting

Instance diagnosis

Internet NAT Gateway integrates with Network Intelligence Service (NIS) to provide one-click, instance-level diagnosis. This feature detects the configuration and operational status of an instance and provides intelligent recommendations to fix any detected issues. The diagnosis covers connectivity, configuration, capacity limits, and cost, and allows you to view historical diagnosis details.

CloudMonitor

NAT Gateway integrates with CloudMonitor, allowing you to monitor various metrics of Internet NAT Gateway and VPC NAT Gateway instances in real time at no cost.

Queries of real-time monitoring data

CloudMonitor collects real-time monitoring metrics from Internet NAT Gateway and VPC NAT Gateway instances and generates visual time-series charts in the console.

Threshold-triggered alerts

Use CloudMonitor to create threshold-based alert rules for Internet NAT Gateway and VPC NAT Gateway instances. By monitoring metric thresholds, you can receive prompt notifications about anomalies and resolve them quickly.

Subscribe to threshold events

When a monitored metric crosses a threshold, CloudMonitor automatically sends an initial alert notification to the designated contacts. You can subscribe to these threshold events to customize how notifications are processed:

  • Aggregation and noise reduction: Consolidate alerts within the subscription scope and use conditional rules to filter out noise, which helps prevent an alert storm caused by repetitive alarms.

  • Filtered alert notifications: After aggregation and noise reduction, CloudMonitor sends effective alerts directly to contacts. If an alert is not resolved within a specified time, CloudMonitor automatically escalates the notification to the next group of contacts.

  • Custom notifications: You can define notification channel levels and templates. You can also push all alert data directly to Message Service (MNS), Log Service (SLS), Function Compute (FC), and webhooks through integrations.

Monitorable metrics

Product

Metric type

Metrics

Enhanced NAT Gateway

Instance

Inbound traffic rate from VPC, inbound traffic rate from the internet, outbound traffic rate to VPC, outbound traffic rate to the internet, inbound traffic from VPC, inbound traffic from the internet, outbound traffic to VPC, outbound traffic to the internet, total bandwidth of dropped packets, total rate of dropped packets, number of port allocation failures, rate of port allocation failures, throughput, inbound packet rate from VPC, inbound packet rate from the internet, outbound packet rate to VPC, outbound packet rate to the internet, inbound packets from VPC, inbound packets from the internet, outbound packets to VPC, outbound packets to the internet, concurrent connections, high-water mark of concurrent connections, rate of dropped concurrent connections, rate of new connections, high-water mark of new connections, rate of dropped new connections

Alibaba Cloud resource healthiness updates

Check Alibaba Cloud Status. This service lets you get real-time information about the health of your cloud resources, check for any service anomalies in each Alibaba Cloud region, and subscribe to RSS feeds for service exceptions to handle issues promptly.

In the left-side navigation pane of Alibaba Cloud Status, select the Network & CDN category. In the product list on the right, find NAT Gateway to view its current status and find the RSS subscription entry.

Cloud resource configuration auditing

Cloud Config is a resource auditing service that tracks resource configuration history and performs compliance audits. It helps you govern your infrastructure at scale and maintain continuous compliance.