Monitoring Metrics

Overview

This section describes the namespace, the metrics that can be monitored by Cloud Eye, and dimensions of these metrics. You can view the metrics reported by ELB and the generated alarms on the Cloud Eye console. For details, see Viewing Metrics.

Namespace

SYS.ELB

Metrics

**Table 1** Metrics supported by ELB
Metric ID	Name	Description	Value	Monitored Object	Monitoring Period (Raw Data)
m1_cps	Concurrent Connections	Load balancing at Layer 4: total number of TCP and UDP connections from the monitored object to backend servers Load balancing at Layer 7: total number of TCP connections from the clients to the monitored object Unit: N/A	≥ 0	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
m2_act_conn	Active Connections	Number of TCP and UDP connections in the ESTABLISHED state between the monitored object and backend servers You can run the following command to view the connections (both Windows and Linux servers): netstat -an Unit: N/A	≥ 0
m3_inact_conn	Inactive Connections	Number of TCP connections between the monitored object and backend servers except those in the ESTABLISHED state You can run the following command to view the connections (both Windows and Linux servers): netstat -an Unit: N/A	≥ 0
m4_ncps	New Connections	Number of connections established between clients and the monitored object per second Unit: Count/s	≥ 0/second
m5_in_pps	Incoming Packets	Number of packets received by the monitored object per second Unit: Packet/s	≥ 0/second
m6_out_pps	Outgoing Packets	Number of packets sent from the monitored object per second Unit: Packet/s	≥ 0/second
m7_in_Bps	Inbound Rate	Traffic used for accessing the monitored object from the Internet per second Unit: byte/s	≥ 0 bytes/s
m8_out_Bps	Outbound Rate	Traffic used by the monitored object to access the Internet per second Unit: byte/s	≥ 0 bytes/s
m9_abnormal_servers	Unhealthy Servers	Number of unhealthy backend servers associated with the monitored object Unit: N/A	≥ 0	Dedicated load balancer Shared load balancer	1 minute
ma_normal_servers	Healthy Servers	Number of healthy backend servers associated with the monitored object Unit: N/A	≥ 0	Dedicated load balancer Shared load balancer	1 minute
m1e_server_rps	Reset Packets from Backend Servers	(TCP listener metrics) Number of reset packets forwarded by the monitored object from backend servers to clients Unit: Packet/s	≥ 0/second	Shared load balancer Shared load balancer - listener	1 minute
m21_client_rps	Reset Packets from Clients	(TCP listener metrics) Number of reset packets forwarded by the monitored object from clients to backend servers Unit: Packet/s	≥ 0/second
m1f_lvs_rps	Reset Packets from Load Balancers	(TCP listener metrics) Number of reset packets generated by the monitored object per second Unit: Packet/s	≥ 0/second
m22_in_bandwidth	Inbound Bandwidth	Bandwidth used for accessing the monitored object from the Internet Unit: bit/s	≥ 0 bit/s	Shared load balancer Shared load balancer - listener	1 minute
m23_out_bandwidth	Outbound Bandwidth	Bandwidth used by the monitored object to access the Internet Unit: bit/s	≥ 0 bit/s	Shared load balancer Shared load balancer - listener	1 minute
mb_l7_qps	Layer-7 Query Rate	Number of requests the monitored object receives per second Unit: Query/s	≥ 0 query/s	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
md_l7_http_3xx	Layer-7 3xx Status Codes	Number of 3xx status codes returned by the monitored object Unit: Count/s	≥ 0/second	Load balancer Listener	1 minute
mc_l7_http_2xx	Layer-7 2xx Status Codes	Number of 2xx status codes returned by the monitored object Unit: Count/s	≥ 0/second	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
me_l7_http_4xx	Layer-7 4xx Status Codes	Number of 4xx status codes returned by the monitored object Unit: Count/s	≥ 0/second
mf_l7_http_5xx	Layer-7 5xx Status Codes	Number of 5xx status codes returned by the monitored object Unit: Count/s	≥ 0/second
m10_l7_http_other_status	Layer-7 Other Status Codes	Number of status codes returned by the monitored object except 2xx, 3xx, 4xx, and 5xx status codes Unit: Count/s	≥ 0/second
m11_l7_http_404	Layer-7 404 Not Found	Number of 404 Not Found status codes returned by the monitored object Unit: Count/s	≥ 0/second
m12_l7_http_499	Layer-7 499 Client Closed Request	Number of 499 Client Closed Request status codes returned by the monitored object Unit: Count/s	≥ 0/second
m13_l7_http_502	Layer-7 502 Bad Gateway	Number of 502 Bad Gateway status codes returned by the monitored object Unit: Count/s	≥ 0/second
m14_l7_rt	Average Layer-7 Response Time	Average response time of the monitored object The response time starts when the monitored object receives requests from the clients and ends when it returns all responses to the clients. Unit: ms NOTE: The average response time it takes to establish a WebSocket connection may be very high. This metric cannot be used as a reference.	≥ 0 ms
m15_l7_upstream_4xx	4xx Status Codes Backend	Number of 4xx status codes returned by the monitored object Unit: Count/s	≥ 0/second	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
m16_l7_upstream_5xx	5xx Status Codes Backend	Number of 5xx status codes returned by the monitored object Unit: Count/s	≥ 0/second
m17_l7_upstream_rt	Average Server Response Time	Average response time of backend servers The response time starts when the monitored object routes the requests to the backend server and ends when the monitored object receives a response from the backend server. Unit: ms NOTE: The average response time it takes to establish a WebSocket connection may be very high. This metric cannot be used as a reference.	≥ 0 ms
m1a_l7_upstream_rt_max	Maximum Server Response Time	Maximum response time of backend servers (This metric is available only when the frontend protocol is HTTP or HTTPS.) The response time starts when the monitored object routes the requests to the backend server and ends when the monitored object receives a response from the backend server. Unit: ms	≥ 0 ms	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
m1b_l7_upstream_rt_min	Minimum Server Response Time	Minimum response time of backend servers (This metric is available only when the frontend protocol is HTTP or HTTPS.) The response time starts when the monitored object routes the requests to the backend server and ends when the monitored object receives a response from the backend server. Unit: ms	≥ 0 ms		1 minute
m1c_l7_rt_max	Maximum Layer-7 Response Time	Maximum response time of the monitored object (This metric is available only when the frontend protocol is HTTP or HTTPS.) The response time starts when the monitored object receives requests from the clients and ends when it returns all responses to the clients. Unit: ms	≥ 0 ms	Dedicated load balancer Shared load balancer Dedicated load balancer - listener Shared load balancer - listener	1 minute
m1d_l7_rt_min	Minimum Layer-7 Response Time	Minimum response time of the monitored object (This metric is available only when the frontend protocol is HTTP or HTTPS.) The response time starts when the monitored object receives requests from the clients and ends when it returns all responses to the clients. Unit: ms	≥ 0 ms		1 minute
l7_con_usage	Layer-7 Concurrent Connection Usage	Ratio of HTTP and HTTPS connections established between the monitored object and backend servers per second, to the maximum number of concurrent connections allowed per second Unit: percent (%)	≥ 0%	Dedicated load balancer	1 minute
l7_in_bps_usage	Layer-7 Inbound Bandwidth Usage	Ratio of the bandwidth that the monitored object uses to return response to clients over HTTP and HTTPS, to the maximum outbound bandwidth allowed Unit: percent (%) CAUTION: If the inbound bandwidth usage reaches 100%, the load balancer performance has reached the upper limit. If the inbound bandwidth keeps higher than the bandwidth that the load balancer can provide, the service availability cannot be guaranteed.	≥ 0%
l7_out_bps_usage	Layer-7 Outbound Bandwidth Usage	Ratio of the bandwidth that the monitored object uses to return response to clients over HTTP and HTTPS, to the maximum outbound bandwidth allowed Unit: percent (%) CAUTION: If the outbound bandwidth usage reaches 100%, the load balancer performance has reached the upper limit. If the outbound bandwidth keeps higher than the bandwidth that the load balancer can provide, the service availability cannot be guaranteed.	≥ 0%
l7_ncps_usage	Layer-7 New Connection Usage	Ratio of HTTP and HTTPS connections established between clients and the monitored object per second, to the maximum number of new connections allowed per second Unit: percent (%)	≥ 0%
l7_qps_usage	Layer 7 QPS Usage	Ratio of HTTP and HTTPS queries per second on the monitored object, to the maximum number of queries allowed per second Unit: percent (%)	≥ 0%
m18_l7_upstream_2xx	2xx Status Codes_Backend	Number of 2xx status codes returned by the monitored object (This metric is available only when the frontend protocol is HTTP or HTTPS.) Unit: Count/s	≥ 0/second	Dedicated load balancer - backend server group Shared load balancer - backend server group	1 minute
m19_l7_upstream_3xx	3xx Status Codes_Backend	Number of 3xx status codes returned by the monitored object (This metric is available only when the frontend protocol is HTTP or HTTPS.) Unit: Count/s	≥ 0/second
m25_l7_resp_Bps	Backend Server Response Bandwidth	The bandwidth that the monitored object uses to return response to clients Unit: bit/s NOTE: When HTTP/2 is enabled for a listener, this metric cannot be used as a reference.	≥ 0 bit/s
m24_l7_req_Bps	Backend Server Request Bandwidth	The bandwidth that the monitored object uses to receive requests from clients Unit: bit/s NOTE: When HTTP/2 is enabled for a listener, this metric cannot be used as a reference.	≥ 0 bit/s
l4_con_usage	Layer-4 Concurrent Connection Usage	Ratio of TCP and UDP connections established between the monitored object and backend servers per second, to the maximum number of concurrent connections allowed per second Unit: percent (%)	≥ 0%	Dedicated load balancer	1 minute
l4_in_bps_usage	Layer-4 Inbound Bandwidth Usage	Ratio of the bandwidth that the monitored object uses to receive requests from clients over TCP and UDP, to the maximum inbound bandwidth allowed Unit: percent (%) CAUTION: If the inbound bandwidth usage reaches 100%, the load balancer performance has reached the upper limit. If the inbound bandwidth keeps higher than the bandwidth that the load balancer can provide, the service availability cannot be guaranteed.	≥ 0%
l4_out_bps_usage	Layer-4 Outbound Bandwidth Usage	Ratio of the bandwidth that the monitored object uses to return response to clients over TCP and UDP, to the maximum outbound bandwidth allowed Unit: percent (%) CAUTION: If the outbound bandwidth usage reaches 100%, the load balancer performance has reached the upper limit. If the outbound bandwidth keeps higher than the bandwidth that the load balancer can provide, the service availability cannot be guaranteed.	≥ 0%
l4_ncps_usage	Layer-4 New Connection Usage	Ratio of TCP and UDP connections established between clients and the monitored object per second, to the maximum number of new connections allowed per second Unit: percent (%)	≥ 0%