If requests to your Application Load Balancer (ALB) instance time out or trigger network issues such as throttling, you can check the monitoring metrics of the ALB instance to troubleshoot errors and check the load and performance of the ALB instance. This topic describes the monitoring metrics of ALB.
Background information
Before you call the CloudMonitor API, you must obtain the values of the Namespace, Period, MetricName, and Dimensions parameters of ALB.
Set the Namespace parameter to
acs_alb.Set the Period parameter to a multiple of 60. Default value: 60. Unit: seconds.
Set the Dimensions to a JSON string, such as
[{"loadBalancerId":"alb-t93aj3yndojot5****"}]. Replace loadBalancerId in the Dimensions parameter with the ID of the ALB instance.
ALB monitoring metrics
In the MetricName column of the following table, metrics without the
DualStack_prefix do not display the IPv4 values and IPv6 values of an ALB instance separately.If the ALB instance uses IPv4, metrics without the
DualStack_prefix display only IPv4 values.If the ALB instance uses dual stack, metrics without the
DualStack_prefix display the sum of IPv4 values and IPv6 values.
In the MetricName column of the following table, metrics with the
DualStack_prefix display IPv4 values and IPv6 values separately.If the ALB instance uses IPv4, the IPv6 value of a metric with the
DualStack_prefix is 0.0, and the IPv4 value of the metric is the actual value.If the ALB instance uses dual stack, a metric with the
DualStack_prefix displays both the IPv4 value and IPv6 value.
In the following table, a hyphen (-) indicates a metric without the DualStack_ prefix, which does not display the IPv4 value and IPv6 value separately.
Instance metrics
Metric | Unit | Metric name | Dimension | Statistics | |
LoadBalancerActiveConnection | Count | LoadBalancerActiveConnection | DualStack_LoadBalancerActiveConnection | userId and loadBalancerId | Value |
LoadBalancerUpstreamTLSNegotiationError | Count/s | LoadBalancerUpstreamTLSNegotiationError | DualStack_LoadBalancerUpstreamTLSNegotiationError | userId and loadBalancerId | Value |
LoadBalancerNewConnection | Count/s | LoadBalancerNewConnection | DualStack_LoadBalancerNewConnection | userId and loadBalancerId | Value |
LoadBalancerRejectedConnection | Count/s | LoadBalancerRejectedConnection | DualStack_LoadBalancerRejectedConnection | userId and loadBalancerId | Value |
LoadBalancerUpstreamConnectionError | Count/s | LoadBalancerUpstreamConnectionError | DualStack_LoadBalancerUpstreamConnectionError | userId and loadBalancerId | Value |
LoadBalancerClientTLSNegotiationError | Count/s | LoadBalancerClientTLSNegotiationError | DualStack_LoadBalancerClientTLSNegotiationError | userId and loadBalancerId | Value |
LoadBalancerHTTPFixedResponse | Count/s | LoadBalancerHTTPFixedResponse | DualStack_LoadBalancerHTTPFixedResponse | userId and loadBalancerId | Value |
LoadBalancerHTTPRedirect | Count/s | LoadBalancerHTTPRedirect | DualStack_LoadBalancerHTTPRedirect | userId and loadBalancerId | Value |
LoadBalancerQPS | Count/s | LoadBalancerQPS | DualStack_LoadBalancerQPS | userId and loadBalancerId | Value |
LoadBalancerNonStickyRequest | Count/s | LoadBalancerNonStickyRequest | DualStack_LoadBalancerNonStickyRequest | userId and loadBalancerId | Value |
LoadBalancerUpstreamResponseTime | ms | LoadBalancerUpstreamResponseTime | DualStack_LoadBalancerUpstreamResponseTime | userId and loadBalancerId | Value |
LoadBalancerRequestTime | ms | LoadBalancerRequestTime | DualStack_LoadBalancerRequestTime | userId and loadBalancerId | Value |
LoadBalancerOutBits | bps | LoadBalancerOutBits | DualStack_LoadBalancerOutBits | userId and loadBalancerId | Value |
LoadBalancerInBits | bps | LoadBalancerInBits | DualStack_LoadBalancerInBits | userId and loadBalancerId | Value |
LoadBalancerHTTPCode2XX | Count/s | LoadBalancerHTTPCode2XX | DualStack_LoadBalancerHTTPCode2XX | userId and loadBalancerId | Value |
LoadBalancerHTTPCode3XX | Count/s | LoadBalancerHTTPCode3XX | DualStack_LoadBalancerHTTPCode3XX | userId and loadBalancerId | Value |
LoadBalancerHTTPCode4XX | Count/s | LoadBalancerHTTPCode4XX | DualStack_LoadBalancerHTTPCode4XX | userId and loadBalancerId | Value |
LoadBalancerHTTPCode500 | Count/s | LoadBalancerHTTPCode500 | DualStack_LoadBalancerHTTPCode500 | userId and loadBalancerId | Value |
LoadBalancerHTTPCode502 | Count/s | LoadBalancerHTTPCode502 | DualStack_LoadBalancerHTTPCode502 | userId and loadBalancerId | Value |
LoadBalancerHTTPCode503 | Count/s | LoadBalancerHTTPCode503 | DualStack_LoadBalancerHTTPCode503 | userId and loadBalancerId | Value |
LoadBalancerHTTPCode504 | Count/s | LoadBalancerHTTPCode504 | DualStack_LoadBalancerHTTPCode504 | userId and loadBalancerId | Value |
LoadBalancerHTTPCode5XX | Count/s | LoadBalancerHTTPCode5XX | DualStack_LoadBalancerHTTPCode5XX | userId and loadBalancerId | Value |
LoadBalancerHTTPCodeUpstream2XX | Count/s | LoadBalancerHTTPCodeUpstream2XX | - | userId and loadBalancerId | Value |
LoadBalancerHTTPCodeUpstream3XX | Count/s | LoadBalancerHTTPCodeUpstream3XX | - | userId and loadBalancerId | Value |
LoadBalancerHTTPCodeUpstream4XX | Count/s | LoadBalancerHTTPCodeUpstream4XX | - | userId and loadBalancerId | Value |
LoadBalancerHTTPCodeUpstream5XX | Count/s | LoadBalancerHTTPCodeUpstream5XX | - | userId and loadBalancerId | Value |
LoadBalancerHealthyHostCount | Count | LoadBalancerHealthyHostCount | - | userId and loadBalancerId | Value |
LoadBalancerUnHealthyHostCount | Count | LoadBalancerUnHealthyHostCount | - | userId and loadBalancerId | Value |
Listener metrics
Metric | Unit | Metric name | Dimension | Statistics | |
ListenerActiveConnection | Count | ListenerActiveConnection | DualStack_ListenerActiveConnection | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerClientTLSNegotiationError | Count/s | ListenerClientTLSNegotiationError | DualStack_ListenerClientTLSNegotiationError | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerNewConnection | Count/s | ListenerNewConnection | DualStack_ListenerNewConnection | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerRejectedConnection | Count/s | ListenerRejectedConnection | DualStack_ListenerRejectedConnection | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerUpstreamConnectionError | Count/s | ListenerUpstreamConnectionError | DualStack_ListenerUpstreamConnectionError | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerUpstreamTLSNegotiationError | Count/s | ListenerUpstreamTLSNegotiationError | DualStack_ListenerUpstreamTLSNegotiationError | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPFixedResponse | Count/s | ListenerHTTPFixedResponse | DualStack_ListenerHTTPFixedResponse | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPRedirect | Count/s | ListenerHTTPRedirect | DualStack_ListenerHTTPRedirect | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerQPS | Count/s | ListenerQPS | DualStack_ListenerQPS | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerNonStickyRequest | Count/s | ListenerNonStickyRequest | DualStack_ListenerNonStickyRequest | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerUpstreamResponseTime | ms | ListenerUpstreamResponseTime | DualStack_ListenerUpstreamResponseTime | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerRequestTime | ms | ListenerRequestTime | DualStack_ListenerRequestTime | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerOutBits | bps | ListenerOutBits | DualStack_ListenerOutBits | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerInBits | bps | ListenerInBits | DualStack_ListenerInBits | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode2XX | Count/s | ListenerHTTPCode2XX | DualStack_ListenerHTTPCode2XX | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode3XX | Count/s | ListenerHTTPCode3XX | DualStack_ListenerHTTPCode3XX | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode4XX | Count/s | ListenerHTTPCode4XX | DualStack_ListenerHTTPCode4XX | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode5XX | Count/s | ListenerHTTPCode5XX | DualStack_ListenerHTTPCode5XX | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode500 | Count/s | ListenerHTTPCode500 | DualStack_ListenerHTTPCode500 | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode502 | Count/s | ListenerHTTPCode502 | DualStack_ListenerHTTPCode502 | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode503 | Count/s | ListenerHTTPCode503 | DualStack_ListenerHTTPCode503 | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCode504 | Count/s | ListenerHTTPCode504 | DualStack_ListenerHTTPCode504 | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCodeUpstream2XX | Count/s | ListenerHTTPCodeUpstream2XX | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCodeUpstream3XX | Count/s | ListenerHTTPCodeUpstream3XX | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCodeUpstream4XX | Count/s | ListenerHTTPCodeUpstream4XX | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHTTPCodeUpstream5XX | Count/s | ListenerHTTPCodeUpstream5XX | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerHealthyHostCount | Count | ListenerHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
ListenerUnHealthyHostCount | Count | ListenerUnHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, and listenerPort | Value |
Forwarding rule metrics
Metric | Unit | Metric name | Dimension | Statistics | |
RuleUpstreamConnectionError | Count/s | RuleUpstreamConnectionError | DualStack_RuleUpstreamConnectionError | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleUpstreamTLSNegotiationError | Count/s | RuleUpstreamTLSNegotiationError | DualStack_RuleUpstreamTLSNegotiationError | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleNonStickyRequest | Count/s | RuleNonStickyRequest | DualStack_RuleNonStickyRequest | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleQPS | Count/s | RuleQPS | DualStack_RuleQPS | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleUpstreamResponseTime | ms | RuleUpstreamResponseTime | DualStack_RuleUpstreamResponseTime | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleRequestTime | ms | RuleRequestTime | DualStack_RuleRequestTime | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream2XX | Count/s | RuleHTTPCodeUpstream2XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream3XX | Count/s | RuleHTTPCodeUpstream3XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream4XX | Count/s | RuleHTTPCodeUpstream4XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream5XX | Count/s | RuleHTTPCodeUpstream5XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHealthyHostCount | Count | RuleHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleUnHealthyHostCount | Count | RuleUnHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream2XXRatio | % | RuleHTTPCodeUpstream2XXRatio | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream3XXRatio | % | RuleHTTPCodeUpstream3XXRatio | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream4XXRatio | % | RuleHTTPCodeUpstream4XXRatio | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream5XXRatio | % | RuleHTTPCodeUpstream5XXRatio | - | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
Server group metrics
Metric | Unit | Metric name | Dimension | Statistics | |
ServerGroupUpstreamConnectionError | Count/s | ServerGroupUpstreamConnectionError | DualStack_ServerGroupUpstreamConnectionError | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupUpstreamTLSNegotiationError | Count/s | ServerGroupUpstreamTLSNegotiationError | DualStack_ServerGroupUpstreamTLSNegotiationError | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupNonStickyRequest | Count/s | ServerGroupNonStickyRequest | DualStack_ServerGroupNonStickyRequest | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupQPS | Count/s | ServerGroupQPS | DualStack_ServerGroupQPS | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupUpstreamResponseTime | ms | ServerGroupUpstreamResponseTime | DualStack_ServerGroupUpstreamResponseTime | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupRequestTime | ms | ServerGroupRequestTime | DualStack_ServerGroupRequestTime | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupHTTPCodeUpstream2XX | Count/s | ServerGroupHTTPCodeUpstream2XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupHTTPCodeUpstream3XX | Count/s | ServerGroupHTTPCodeUpstream3XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupHTTPCodeUpstream4XX | Count/s | ServerGroupHTTPCodeUpstream4XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupHTTPCodeUpstream5XX | Count/s | ServerGroupHTTPCodeUpstream5XX | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupHealthyHostCount | Count | ServerGroupHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
ServerGroupUnHealthyHostCount | Count | ServerGroupUnHealthyHostCount | - | userId, loadBalancerId, listenerProtocol, listenerPort, and serverGroupId | Value |
Virtual IP address (VIP) metrics (Zone metrics)
You can view the metrics on the VIP (Zone) tab only if your ALB instance is assigned a static IP address. To create alert rules for the metrics on the VIP (Zone) tab, log on to the CloudMonitor console. For more information, see Configure alert rules for ALB metrics.
Metric | Unit | Metric name | Dimension | Statistics |
VipActiveConnection | Count | VipActiveConnection | userId and loadBalancerId vip | Value |
VipUpstreamTLSNegotiationError | Count/s | VipUpstreamTLSNegotiationError | userId and loadBalancerId vip | Value |
VipNewConnection | Count/s | VipNewConnection | userId and loadBalancerId vip | Value |
VipRejectedConnection | Count/s | VipRejectedConnection | userId and loadBalancerId vip | Value |
VipUpstreamConnectionError | Count/s | VipUpstreamConnectionError | userId and loadBalancerId vip | Value |
VipClientTLSNegotiationError | Count/s | VipClientTLSNegotiationError | userId and loadBalancerId vip | Value |
VipHTTPFixedResponse | Count/s) | VipHTTPFixedResponse | userId and loadBalancerId vip | Value |
VipHTTPRedirect | Count/s | VipHTTPRedirect | userId and loadBalancerId vip | Value |
VipQPS | Count/s | VipQPS | userId and loadBalancerId vip | Value |
VipNonStickyRequest | Count/s | VipNonStickyRequest | userId and loadBalancerId vip | Value |
VipUpstreamResponseTime | ms | VipUpstreamResponseTime | userId and loadBalancerId vip | Value |
VipRequestTime | ms | VipRequestTime | userId and loadBalancerId vip | Value |
VipOutBits | bps | VipOutBits | userId and loadBalancerId vip | Value |
VipInBits | bps | VipInBits | userId and loadBalancerId vip | Value |
VipHTTPCode2XX | Count/s | VipHTTPCode2XX | userId and loadBalancerId vip | Value |
VipHTTPCode3XX | Count/s | VipHTTPCode3XX | userId and loadBalancerId vip | Value |
VipHTTPCode4XX | Count/s | VipHTTPCode4XX | userId and loadBalancerId vip | Value |
VipHTTPCode5XX | Count/s | VipHTTPCode5XX | userId and loadBalancerId vip | Value |
VipHTTPCode500 | Count/s | VipHTTPCode500 | userId and loadBalancerId vip | Value |
VipHTTPCode502 | Count/s | VipHTTPCode502 | userId and loadBalancerId vip | Value |
VipHTTPCode503 | Count/s | VipHTTPCode503 | userId and loadBalancerId vip | Value |
VipHTTPCode504 | Count/s | VipHTTPCode504 | userId and loadBalancerId vip | Value |
Metrics that can be viewed by using the API or SDK
The metrics in the following table are not displayed in the ALB console. You can query the metrics only by using the API or SDK. Each metric indicates the overall metric of an ALB instance. IPv4 and IPv6 values are not displayed separately.
Metric | Unit | Metric name | Dimension | Statistics |
RuleHTTPCodeUpstream2XXRatio | % | RuleHTTPCodeUpstream2XXRatio | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream3XXRatio | % | RuleHTTPCodeUpstream3XXRatio | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream4XXRatio | % | RuleHTTPCodeUpstream4XXRatio | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |
RuleHTTPCodeUpstream5XXRatio | % | RuleHTTPCodeUpstream5XXRatio | userId, loadBalancerId, listenerProtocol, listenerPort, and ruleId | Value |