Documentation forSolarWinds Observability SaaS

NAT Gateway metrics

AWS NAT gateways are Network Address Translation (NAT) services. You can use a NAT gateway so that instances in a private subnet can connect to services outside your VPC but external services cannot initiate a connection with those instances. Ensure your cloud platform is configured in SolarWinds Observability SaaS to collect this service's data. See Add an AWS cloud account. CloudWatch metrics must also be enabled for this service in the AWS Console for the metric data to be available.

Many of the collected metrics from AWS NAT Gateway entities are displayed as widgets in SolarWinds Observability explorers; additional metrics may be collected and available in the Metrics Explorer. You can also create an alert for when an entity's metric value moves out of a specific range. See Entities in SolarWinds Observability SaaS for information about entity types in SolarWinds Observability SaaS.

The following table lists some of the metrics collected for these entities. To see the AWS NAT Gateway metrics in the Metrics Explorer, type AWS.NATGateway in the search box.

Metric Units Description
sw.metrics.healthscore Percent (%)

Health state. The health state provides real-time insight into the overall health and performance of your monitored entities. The health state is determined based on anomalies detected for the entity, alerts triggered for the entity's metrics, and the status of the entity. The health state is displayed as one of the following four states and colors: Good, Moderate, Bad, or Unknown. You can determine the impact of the alerts, anomalies, and statuses on the health of an entity type by going to Settings > Health, and selecting a specific entity type. You can also customize the impact.

To view the health of AWS NAT Gateway entities in the Metrics Explorer, filter the sw.metrics.healthscore metric by entity_types and select awsnatgateway.
AWS.NATGateway.ActiveConnectionCount Count

ActiveConnectionCount. The maximum number of concurrent active TCP connections through the NAT gateway.

AWS.NATGateway.Bandwidth bps

The total network bandwidth used by the NAT gateway.

AWS.NATGateway.BytesInFromDestination bytes

BytesInFromDestination. The total number of bytes received by the NAT gateway from the destination.

AWS.NATGateway.BytesInFromSource bytes

BytesInFromSource. The total number of bytes received by the NAT gateway from clients in VPC.

AWS.NATGateway.BytesOutToDestination bytes

BytesOutToDestination. The total number of bytes sent out through the NAT gateway to the destination.

AWS.NATGateway.BytesOutToSource bytes

BytesOutToSource. The total number of bytes sent through the NAT gateway to the clients in VPC.

AWS.NATGateway.ConnectionAttemptCount Count

ConnectionAttemptCount. The total number of connection attempts made through the NAT gateway.

AWS.NATGateway.ConnectionEstablishedCount Count

ConnectionEstablishedCount. The total number of connections established through the NAT gateway.

AWS.NATGateway.ConnectionEstablishedPercent Percent (%)

The percentage of connection attempts that successfully establish a connection through the NAT gateway.

AWS.NATGateway.ErrorPortAllocation Count

ErrorPortAllocation. The total number of times the NAT gateway could not allocate a source port.

AWS.NATGateway.IdleTimeoutCount Count

IdleTimeoutCount. The total number of connections that transitioned from the active state to the idle state.

AWS.NATGateway.PacketsDropCount Count

PacketsDropCount. The total number of packets dropped by the NAT gateway.

AWS.NATGateway.PacketsInFromDestination Count

PacketsInFromDestination. The total number of packets received by the NAT gateway from the destination.

AWS.NATGateway.PacketsInFromSource Count

PacketsInFromSource. The total number of packets received by the NAT gateway from clients in VPC.

AWS.NATGateway.PacketsOutToDestination Count

PacketsOutToDestination. The total number of packets sent out through the NAT gateway to the destination.

AWS.NATGateway.PacketsOutToSource Count

PacketsOutToSource. The total number of packets sent through the NAT gateway to the clients in VPC.

AWS.NATGateway.PeakBytesPerSecond Count The peak rate of bytes transferred per second through the NAT gateway.
AWS.NATGateway.PeakPacketsPerSecond Count The peak rate of packets transferred per second through the NAT gateway.