:ModifyHostAvailability

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

The ID of the application group.

The ID of the availability monitoring task.

The name of the availability monitoring task.

The range of instances that are monitored by the availability monitoring task. Valid values:

• GROUP: All ECS instances in the application group are monitored.
• GROUP_SPEC_INSTANCE: Specified ECS instances in the application group are monitored. The TaskScope parameter must be used in combination with the InstanceList.N parameter. The InstanceList.N parameter specifies the ECS instances to be monitored.

The URI that you want to monitor. If the TaskType parameter is set to HTTP, this parameter is required.

The domain name or IP address that you want to monitor.

The character set that is used in the HTTP response.

The content of the HTTP POST 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 return characters. Example:

params1:value1
params2:value2

The interval at which detection requests are sent. Unit: seconds. Valid values: 15, 30, 60, 120, 300, 900, 1800, and 3600.

The alert notification methods. Valid values:

0: Alert notifications are sent by using emails and DingTalk chatbots.

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

For example, if the AlertConfig.StartTime parameter is set to 0 and the AlertConfig.EndTime parameter is set to 22, the alert rule is effective from 00:00:00 to 22:00:00.

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

For example, if the AlertConfig.StartTime parameter is set to 0 and the AlertConfig.EndTime parameter is set to 22, the alert rule is effective from 00:00:00 to 22:00:00.

The mute period during which new alerts are not sent even if the trigger conditions are met. Unit: seconds. Default value: 86400. The default value indicates one day.

The callback URL.

The metric for which the alert feature is enabled. Valid values of N: 1 to 21. Valid values:

• HttpStatus: HTTP status code
• HttpLatency: HTTP response time
• TelnetStatus: Telnet status code
• TelnetLatency: Telnet response time
• PingLostRate: Ping packet loss rate

The alert threshold. Valid values of N: 1 to 21.

The consecutive number of times for which the metric value meets the alert condition 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:

• >
• >=
• <
• <=
• =

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

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

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

The ID of the resource for which alerts are triggered.

The Alibaba Cloud Resource Name (ARN) of the resource.

Format: acs:{Service name abbreviation}:{regionId}:{userId}:/{Resource type}/{Resource name}/message. Example: acs:mns:cn-hangzhou:120886317861****:/queues/test123/message. Fields:

• {Service name abbreviation}: the abbreviation of the service name. Valid value: mns.
• {userId}: the ID of the Alibaba Cloud account.
• {regionId}: the region ID of the message queue or topic.
• {Resource type}: the type of the resource for which alerts are triggered. Valid values: - **queues** - **topics** {Resource name}: the name of the resource. - If the resource type is set to **queues**, the resource name is the name of the message queue. - If the resource type is set to **topics**, the resource name is the name of the topic.

The level of the alert. Valid values:

• INFO: information
• WARN: warning
• CRITICAL: critical

The parameters of the alert callback. The parameters are in the JSON format.

The HTTP status code.

The error message.

The ID of the request.

Indicates whether the call was successful. Valid values:

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