ModifyHostAvailability

The operation that you want to perform. Set the value to ModifyHostAvailability.

The alert notification method.

Set the value to 0. The value 0 indicates that alert notifications are sent by using emails and DingTalk chatbots.

The metric for which the alerting feature is enabled. Valid values of N: 1 to 21. Valid values of the AlertConfigEscalationList.N.MetricName parameter:

• HttpStatus: HTTP status code
• HttpLatency: HTTP response time
• TelnetStatus: TELNET status code
• TelnetLatency: TELNET response time
• PingLostRate: PING packet loss rate

The ID of the application group.

The ID of the availability monitoring task.

The name of the availability monitoring task.

The monitoring range of the availability monitoring task. Valid values:

• GROUP: monitors all Elastic Compute Service (ECS) instances in the application group
• GROUP_SPEC_INSTANCE: monitors specific ECS instances in the application group The TaskScope and InstanceList.N parameters must be used in pairs.

The URI to be monitored. Set this parameter if the TaskType parameter is set to HTTP.

The domain name or IP address to be monitored.

The character set that is used in the HTTP response.

The post body in the HTTP request.

The response to the HTTP request.

The HTTP request method. Valid values:

• GET
• POST
• HEAD

The method to trigger an alert. The alert can be triggered based on whether the specified alert rule is included in the response body. Valid values:

• true: If the HTTP response body includes the alert rule, an alert is triggered.
• false: If the HTTP response does not include the alert rule, an alert is triggered.

The header of the HTTP request. Format: Parameter name: Parameter value. Separate multiple parameters with carriage returns and line feeds. Example:

params1:value1
params2:value2

The beginning of the time period during which the alert rule is effective. Valid values: 0 to 23.

The end of the time period during which the alert rule is effective. Valid values: 0 to 23.

The mute period during which notifications are not repeatedly sent for an alert. Unit: seconds. Default value: 86400. The default value indicates one day.

The callback URL.

The method used to calculate metric values that trigger alerts. Valid values of N: 1 to 21. The value of this parameter varies with the metric. The following points describe the correspondence between metrics and calculation methods:

• HttpStatus: Value
• HttpLatency: Average
• TelnetStatus: Value
• TelnetLatency: Average
• PingLostRate: Average

The consecutive number of times for which the metric value is measured before an alert is triggered. Valid values of N: 1 to 21.

The comparison operator that is used in the alert rule. Valid values of N: 1 to 21. Valid values of the AlertConfigEscalationList.N.Operator parameter:

• >
• >=
• <
• <=
• =

The threshold of the metric value. Valid values of N: 1 to 21.

The ECS instances to be monitored. Valid values of N: 1 to 21.

The ID of the request.

The error message.

The HTTP status code.

Indicates whether the call was successful. Valid values:

• true: The call was successful.
• false: The call failed.