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Cloud Load Balancer
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    Monitoring Metrics

    Last updated: 2024-01-04 14:34:05
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      Tencent Cloud Observability Platform (TCOP) collects raw data from the running CLB instances and displays the data entries in intuitive graphs. Statistics will be kept for one month by default. You can observe the operations of instances in the month to stay informed of the status of application services.
      You can log in to the TCOP console to view CLB monitoring data. Choose Cloud Product Monitoring > Cloud Load Balancer and then click a CLB instance ID to enter the monitoring details page. You can view monitoring data of the CLB instance, and expand it to view the listener and real server monitoring information.
      Note:
      For now, the data of concurrent connection utilization and new connection utilization of LCU-supported CLB instances are reported. These data of shared CLB instances are not reported.

      CLB Instance Level

      Metric Name
      Metric Meaning
      Metric Description
      Unit
      Statistical Period (Sec)
      ClientConnum
      Client-to-CLB active connections
      Number of active connections from clients to a CLB instance or listener at a certain time point in the statistical period.
      -
      10/60/300
      ClientInactiveConn
      Client-to-CLB inactive connections
      Number of inactive connections from clients to a CLB instance or listener at a certain time point in the statistical period.
      -
      10/60/300
      ClientConcurConn
      Client-to-CLB concurrent connections
      Number of concurrent connections from clients to a CLB instance or listener at a certain time point in the statistical period.
      -
      10/60/300
      ClientNewConn
      Client-to-CLB new connections
      Number of new connections from clients to a CLB instance or listener in the statistical period.
      /sec
      10/60/300
      ClientInpkg
      Client-to-CLB packets in
      Number of data packets sent per second from clients to a CLB instance in the statistical period.
      /sec
      10/60/300
      ClientOutpkg
      Client-to-CLB packets out
      Number of data packets sent per second from a CLB instance to clients in the statistical period.
      /sec
      10/60/300
      ClientAccIntraffic
      Client-to-CLB traffic in
      Traffic from clients to a CLB instance in the statistical period.
      MB
      10/60/300
      ClientAccOuttraffic
      Client-to-CLB traffic out
      Traffic from a CLB instance to clients in the statistical period.
      MB
      10/60/300
      ClientOuttraffic
      Client-to-CLB bandwidth out
      Bandwidth used by traffic from a CLB instance to clients in the statistical period.
      Mbps
      10/60/300
      ClientIntraffic
      Client-to-CLB bandwidth in
      Bandwidth used by traffic from clients to a CLB instance in the statistical period.
      Mbps
      10/60/300
      OutTraffic
      CLB-to-real server bandwidth out
      Bandwidth used by traffic from real servers to a CLB instance in the statistical period.
      Mbps
      60/300
      InTraffic
      CLB-to-real server bandwidth in
      Bandwidth used by traffic from a CLB instance to real servers in the statistical period.
      Mbps
      60/300
      AccOuttraffic
      CLB-to-real server traffic out
      Traffic from real servers to a CLB instance in the statistical period.
      This metric is supported only by public network CLB instances.
      MB
      10/60/300/3600
      DropTotalConns
      Dropped connections
      Number of connections dropped by a CLB instance or listener in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      -
      10/60/300
      InDropBits
      Dropped bandwidth in
      Bandwidth dropped by clients when accessing a CLB instance through a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      Byte
      10/60/300
      OutDropBits
      Dropped bandwidth out
      Bandwidth dropped by a CLB instance when accessing a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      Byte
      10/60/300
      InDropPkts
      Dropped packets in
      Number of packets dropped by clients when accessing a CLB instance through a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      /sec
      10/60/300
      OutDropPkts
      Dropped packets out
      Number of packets dropped by a CLB instance when accessing a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      /sec
      10/60/300
      DropQps
      Dropped QPS
      Number of requests dropped by a CLB instance or listener in the statistical period.
      This metric is dedicated to layer-7 listeners and is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type.
      -
      60/300
      IntrafficVipRatio
      Inbound bandwidth utilization
      Utilization of bandwidth used by clients to access a CLB instance through a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type. This metric is currently in beta. To try it out, submit a ticket.
      %
      10/60/300
      OuttrafficVipRatio
      Outbound bandwidth utilization
      Utilization of bandwidth used by a CLB instance to access a public network in the statistical period.
      This metric is supported only by bill-by-IP accounts. For more information about how to determine the account type, see Checking Account Type. This metric is currently in beta. To try it out, submit a ticket.
      ％
      10/60/300
      ReqAvg
      Average request time
      Average request time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      ReqMax
      Maximum request time
      Maximum request time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspAvg
      Average response time
      Average response time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspMax
      Maximum response time
      Maximum response time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspTimeout
      Timed-out responses
      Number of CLB timed-out responses in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      SuccReq
      Successful requests per minute
      Number of successful requests per minute of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      TotalReq
      Requests per second
      Number of requests per second of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      -
      60/300
      QpsVipRatio
      QPS Utilization Rate
      Within a specific moment in the statistical granularity, the utilization rate of the QPS performance upper limit of the load balancing is compared to the QPS performance of the performance capacity type specification. This metric is solely supported by performance capacity instances, and is not compatible with shared instances.
      %
      60、300
      ClbHttp3xx
      3xx status codes returned by CLB
      Number of 3xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp4xx
      4xx status codes returned by CLB
      Number of 4xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp5xx
      5xx status codes returned by CLB
      Number of 5xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp404
      404 status codes returned by CLB
      Number of 404 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp499
      499 status codes returned by CLB
      Number of 499 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp502
      502 status codes returned by CLB
      Number of 502 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp503
      503 status codes returned by CLB
      Number of 503 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp504
      504 status codes returned by CLB
      Number of 504 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http2xx
      2xx status codes
      Number of 2xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http3xx
      3xx status codes
      Number of 3xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http4xx
      4xx status codes
      Number of 4xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http5xx
      5xx status codes
      Number of 5xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http404
      404 status codes
      Number of 404 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http499
      499 status codes
      Number of 499 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http502
      502 status codes
      Number of 502 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http503
      503 status codes
      Number of 503 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http504
      504 status codes
      Number of 504 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      OverloadCurConn
      Concurrent SNAT connections
      Number of concurrent connections per minute to the SNAT IP addresses of a CLB instance in the statistical period.
      This metric is still in beta. To try it out, submit a ticket.
      /min
      60
      ConnRatio
      SNAT port utilization
      Port utilization of the SNAT IP addresses of a CLB instance in the statistical period.
      Port utilization = Number of concurrent SNAT connections/(Number of SNAT IP addresses x 55000 x Number of servers)
      This metric is still in beta. To try it out, submit a ticket.
      %
      60
      SnatFail
      Failed SNAT connections
      Number of failed connections per minute between the SNAT IP addresses of a CLB instance and real servers in the statistical period.
      This metric is still in beta. To try it out, submit a ticket.
      /min
      60
      UnhealthRsCount
      Abnormal health checks
      Number of abnormal health checks of a CLB instance in the statistical period.
      -
      60/300

      Layer-4 Listener (TCP/UDP) Level

      Layer-4 listeners allow you to view the monitoring metrics at three levels:
      Listener level
      Real server level
      Real server port level
      Metric Name
      Metric Meaning
      Metric Description
      Unit
      Statistical Period (Sec)
      ClientConnum
      Client-to-CLB active connections
      Number of active connections from clients to a CLB instance or listener at a certain time point in the statistical period.
      -
      10/60/300
      ClientNewConn
      Client-to-CLB new connections
      Number of new connections from clients to a CLB instance or listener in the statistical period.
      /sec
      10/60/300
      ClientInpkg
      Client-to-CLB packets in
      Number of data packets sent per second from clients to a CLB instance in the statistical period.
      /sec
      10/60/300
      ClientOutpkg
      Client-to-CLB packets out
      Number of data packets sent per second from a CLB instance to clients in the statistical period.
      /sec
      10/60/300
      ClientAccIntraffic
      Client-to-CLB traffic in
      Traffic from clients to a CLB instance in the statistical period.
      MB
      10/60/300
      ClientAccOuttraffic
      Client-to-CLB traffic out
      Traffic from a CLB instance to clients in the statistical period.
      MB
      10/60/300
      ClientOuttraffic
      Client-to-CLB bandwidth out
      Bandwidth used by traffic from a CLB instance to clients in the statistical period.
      Mbps
      10/60/300
      ClientIntraffic
      Client-to-CLB bandwidth in
      Traffic from clients to a CLB instance in the statistical period.
      Mbps
      10/60/300
      OutTraffic
      CLB-to-real server bandwidth out
      Bandwidth used by traffic from real servers to a CLB instance in the statistical period.
      Mbps
      60/300
      InTraffic
      CLB-to-real server bandwidth in
      Bandwidth used by traffic from a CLB instance to real servers in the statistical period.
      Mbps
      60/300
      OutPkg
      CLB-to-real server packets out
      Number of data packets sent per second from real servers to a CLB instance in the statistical period.
      /sec
      60/300
      InPkg
      CLB-to-real server packets in
      Number of data packets sent per second from a CLB instance to real servers in the statistical period.
      /sec
      60/300
      AccOuttraffic
      CLB-to-real server traffic out
      Traffic from real servers to a CLB instance in the statistical period.
      This metric is supported only by public network CLB instances.
      MB
      10/60/300/3600
      ConNum
      CLB-to-real server connections
      Number of connections from a CLB instance to real servers in the statistical period.
      -
      60/300
      NewConn
      CLB-to-real server new connections
      Number of new connections from a CLB instance to real servers in the statistical period.
      /min
      60/300
      UnhealthRsCount
      Abnormal health checks
      Number of abnormal health checks of a CLB instance in the statistical period.
      -
      60/300

      Layer-7 Listener (HTTP/HTTPS) Level

      Layer-7 listeners allow you to view the monitoring metrics at three levels:
      Listener level
      Real server level
      Real server port level
      Metric Name
      Metric Meaning
      Metric Description
      Unit
      Statistical Period (Sec)
      ClientConnum
      Client-to-CLB active connections
      Number of active connections from clients to a CLB instance or listener at a certain time point in the statistical period.
      -
      10/60/300
      ClientNewConn
      Client-to-CLB new connections
      Number of new connections from clients to a CLB instance or listener in the statistical period.
      /sec
      10/60/300
      ClientInpkg
      Client-to-CLB packets in
      Number of data packets sent per second from clients to a CLB instance in the statistical period.
      /sec
      10/60/300
      ClientOutpkg
      Client-to-CLB packets out
      Number of data packets sent per second from a CLB instance to clients in the statistical period.
      /sec
      10/60/300
      ClientAccIntraffic
      Client-to-CLB traffic in
      Traffic from clients to a CLB instance in the statistical period.
      MB
      10/60/300
      ClientAccOuttraffic
      Client-to-CLB traffic out
      Traffic from a CLB instance to clients in the statistical period.
      MB
      10/60/300
      ClientOuttraffic
      Client-to-CLB bandwidth out
      Bandwidth used by traffic from a CLB instance to clients in the statistical period.
      Mbps
      10/60/300
      ClientIntraffic
      Client-to-CLB bandwidth in
      Bandwidth used by traffic from clients to a CLB instance in the statistical period.
      Mbps
      10/60/300
      OutTraffic
      CLB-to-real server bandwidth out
      Bandwidth used by traffic from real servers to a CLB instance in the statistical period.
      Mbps
      60/300
      InTraffic
      CLB-to-real server bandwidth in
      Bandwidth used by traffic from a CLB instance to real servers in the statistical period.
      Mbps
      60/300
      OutPkg
      CLB-to-real server packets out
      Number of data packets sent per second from real servers to a CLB instance in the statistical period.
      /sec
      60/300
      InPkg
      CLB-to-real server packets in
      Number of data packets sent per second from a CLB instance to real servers in the statistical period.
      /sec
      60/300
      AccOuttraffic
      CLB-to-real server traffic out
      Traffic from real servers to a CLB instance in the statistical period.
      This metric is supported only by public network CLB instances.
      MB
      10/60/300/3600
      ConNum
      CLB-to-real server connections
      Number of connections from a CLB instance to real servers in the statistical period.
      -
      60/300
      NewConn
      CLB-to-real server new connections
      Number of new connections from a CLB instance to real servers in the statistical period.
      /min
      60/300
      ReqAvg
      Average request time
      Average request time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      ReqMax
      Maximum request time
      Maximum request time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspAvg
      Average response time
      Average response time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspMax
      Maximum response time
      Maximum response time of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      Millisecond
      60/300
      RspTimeout
      Timed-out responses
      Number of CLB timed-out responses in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      SuccReq
      Successful requests per minute
      Number of successful requests per minute of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      TotalReq
      Requests per second
      Number of requests per second of a CLB instance in the statistical period.
      This metric is dedicated to layer-7 listeners.
      -
      60/300
      QpsVipRatio
      QPS Utilization Rate
      Within a specific moment in the statistical granularity, the utilization rate of the QPS performance upper limit of the load balancing is compared to the QPS performance of the performance capacity type specification. This metric is solely supported by performance capacity instances, and is not compatible with shared instances.
      %
      60、300
      DropQps
      Discard QPS
      Within the statistical granularity, the number of requests dropped on the load balancer or listener. This metric is unique to the seven-layer listener and is only supported by standard account types. Traditional account types do not support it. For the method of determining the account type, please refer to Checking Account Type.
      -
      60、300
      ClbHttp3xx
      3xx status codes returned by CLB
      Number of 3xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp4xx
      4xx status codes returned by CLB
      Number of 4xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp5xx
      5xx status codes returned by CLB
      Number of 5xx status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp404
      404 status codes returned by CLB
      Number of 404 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp499
      499 status codes returned by CLB
      Number of 499 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp502
      502 status codes returned by CLB
      Number of 502 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp503
      503 status codes returned by CLB
      Number of 503 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      ClbHttp504
      504 status codes returned by CLB
      Number of 504 status codes of a CLB instance in the statistical period. (Status codes returned by both the CLB instance and real servers are counted.)
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http2xx
      2xx status codes
      Number of 2xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http3xx
      3xx status codes
      Number of 3xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http4xx
      4xx status codes
      Number of 4xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http5xx
      5xx status codes
      Number of 5xx status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http404
      404 status codes
      Number of 404 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http499
      499 status codes
      Number of 499 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http502
      502 status codes
      Number of 502 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http503
      503 status codes
      Number of 503 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      Http504
      504 status codes
      Number of 504 status codes returned by real servers in the statistical period.
      This metric is dedicated to layer-7 listeners.
      /min
      60/300
      UnhealthRsCount
      Abnormal health checks
      Number of abnormal health checks of a CLB instance in the statistical period.
      -
      60/300
      Note:
      If you want to view the monitoring data of a real server under a listener, log in to the CLB console, click the monitoring icon next to the CLB instance ID, and then browse the performance data of the instance in the floating window.

      References

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