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Monitoring Metrics

Updated on 2024-04-18 GMT+08:00

Overview

This section describes the namespace, the metrics that can be monitored by Cloud Eye, and dimensions of these metrics. You can use APIs provided by Cloud Eye to query the metrics of a monitored object and generated alarms.

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

  • 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

  • Load balancer

1 minute

ma_normal_servers

Healthy Servers

Number of healthy backend servers associated with the monitored object

Unit: N/A

≥ 0

mb_l7_qps

Layer-7 Query Rate

Number of requests the monitored object receives per second

Unit: Query/s

≥ 0 query/s

  • 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

  • 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

a: If a service is being monitored from multiple dimensions, include all dimensions when you use APIs to query the metrics.

  • Example of querying a single metric from both dimensions: dim.0=lbaas_instance_id,223e9eed-2b02-4ed2-a126-7e806a6fee1f&dim.1=lbaas_listener_id,3baa7335-8886-4867-8481-7cbba967a917
  • Example of querying metrics in batches from both dimensions:
    "dimensions": [
    {
    "name": "lbaas_instance_id",
    "value": "223e9eed-2b02-4ed2-a126-7e806a6fee1f"
    }
    {
    "name": "lbaas_listener_id",
    "value": "3baa7335-8886-4867-8481-7cbba967a917"
    }
    ],

Dimensions

Key

Value

lbaas_instance_id

Load balancer ID

lbaas_listener_id

ID of a listener added to a load balancer

lbaas_pool_id

ID of the backend server group

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