Type | Restriction Item | Description |
Alarm Policy | Monitoring Object | A maximum of 20 log topics can be selected for a single alarm policy, and cross-region alarm is not supported. |
| Query Statement | The limitations are the same as Search and Analysis, including statement length and concurrent limitations. |
| Number of Query Statement | When each execution statement uses the same log topic, up to 3 query statements can be added for a single alarm policy. When each execution statement selects log topics separately, up to 10 query statements can be added for a single alarm policy. |
| Execution statement query time range | The maximum time range is the last 24 hours. |
| Execution Cycle | The minimum execution cycle is 1 minute and the maximum execution cycle is 1,440 minutes. |
| Trigger by group | The execution statement results can be divided into 1,000 groups at most. The 1,000 groups will be judged separately to determine whether they meet the triggering conditions, and no judgment will be performed for the groups beyond the range. Note: Triggering by group is an optional function, and this limitation is not involved if it is not enabled. |
| Trigger condition judgment times | When the result of the execution statement is multiple values (after grouping), the results will be judged to determine whether the triggering conditions are met, and the judgment will stop when the triggering conditions are met or more than 1,000 times of judgement have been performed. |
Notification Type | Phone | The same phone number can receive up to 1 phone call alarm within 30 seconds, up to 3 phone call alarms within 10 minutes, and up to 50 phone call alarms within 1 day. The same phone number can receive a maximum of 3 phone call alarms from 22:00 to 08:00 the next day. To eliminate this restriction, go to the Message Center to enable receiving alarms at night. The above limitations are not limited to phone call alarms generated by the Cloud Log Service. Phone notifications generated by TCOP (Tencent Cloud Observability Platform) and Message Center are also subject to these limitations. To receive alarms through phone calls, it is recommended to add the following phone numbers to the allowlist of your phone. Otherwise, the calls will be blocked. Phone List: Message Center - Phone List. If there are many numbers in the phone list and you want to fix it to a smaller set of phone numbers, enable the Fixed Voice Number Notification switch in the Message Center. |
| WeCom, DingTalk, and Lark | Each Chatbot cannot send more than 20 messages per minute. |
| Custom webhooks | Public network access should be supported. Private network addresses are not supported. When the status code returned by the interface is 200, it indicates that callback is successful. |
Alarm Records | Storage Period | 30 days |
Alarm Notification | Alarm Notification Variables | The following alarm notification variables are subject to data entry count or data size restrictions. The data will be automatically truncated if the upper limits are exceeded. {{.Message}}: The maximum size is 10 KB. {{.QueryResult}}: Each statement can contain up to 1,000 data entries with a maximum size of 10 KB. Up to 10 statements are supported, with a total maximum size of 100 KB. {{.TriggerResult}}: Each statement can contain up to 1,000 data entries with a maximum size of 10 KB. Up to 10 statements are supported, with a total maximum size of 100 KB. {{.QueryLog}}: Each statement can contain up to 10 data entries with a maximum size of 50 KB. Up to 10 statements are supported, with a total maximum size of 150 KB. {{.AnalysisResult}}: The maximum size of each multidimensional analysis result is 10 KB. Up to five multidimensional analysis results are supported, with a total maximum size of 50 KB. Related Raw Logs: up to 10 entries per statement, subject to user configuration. Top 5 Field Values and Percentage Statistics: up to five entries per statement. Custom Search and Analysis (SQL): up to 1,000 entries per statement. Custom Search and Analysis (search): up to 10 entries per statement. |
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