Set up metric-based alert policies to notify target recipients when the monitored metric reaches the threshold.
You can create alert policies on the following levels:
Public network listener
Private network listener
Real server
Listener (Not available for private-network Classic CLBs)
Server port
Layer-7 protocol
Public/Private Network Listeners
Supported network listener metrics:
Metric
Unit
Description
Inbound bandwidth
Mbps
Bandwidth consumed when data is coming into the CLB over the public network within a sampling period.
Outbound bandwidth
Mbps
Bandwidth consumed by the CLB to access the public network within a sampling period.
Inbound packets
Packets/s
Number of request data packets received by the CLB per second within a sampling period.
Outbound packets
Packets/s
Number of data packets sent by the CLB per second within a sampling period.
Real Server
CLB supports alert policies on the listener and server port level.
1. Listener level
Set up an policy to trigger alerts when the number of abnormal ports of real servers bound to the listener reaches the threshold. In the example below, the number of abnormal ports of all real servers under the selected listener is collected once every minute. If the number is greater than 10 per second for two consecutive sampling period, an alert is triggered. Only one alert is sent per day.
