Setting Custom Log Time

Updated on 2025-02-12 GMT+08:00

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When configuring log ingestion, you can enable Custom Log Time to set a time field in the logs as the ingestion configuration time.

Enabling Custom Log Time

Log in to the management console and choose Management & Deployment > Log Tank Service. The Log Management page is displayed by default.
Expand the target log group and click the name of the target stream.
On the log stream details page, click in the upper right corner. On the page displayed, click the Cloud Structuring Parsing tab. For details, see Setting Cloud Structuring Parsing.

After cloud structuring parsing is configured, enable Custom Log Time and specify the following parameters.

NOTE:

A time deviation may occur around the time displayed on the log search page when you enable or disable Custom Log Time. Do not frequently enable or disable it.

**Table 1** Parameter configuration
Parameter	Description	Example
Key	Name of an extracted field. You can select an extracted field from the drop-down list. The field is of the string or long type.	test
Value	Value of an extracted field. After a Key is selected, the Value is automatically filled in. NOTE: The value of the field must be within 24 hours earlier or later than the current time.	2022-07-19 12:12:00
Format	For details, see Common Log Time Formats.	yyyy-MM-dd HH:mm:ss
Operation	Click Verify. If the message The time format is successfully matched with the time field value. is displayed, the verification is successful.	-

Common Log Time Formats

Table 2 lists common log time formats.

NOTE:

By default, log timestamps in LTS are accurate to seconds. You do not need to configure information such as milliseconds and microseconds.

**Table 2** Time formats
Format	Description	Example
EEE	Abbreviation for Week.	Fri
EEEE	Full name for Week.	Friday
MMM	Abbreviation for Month.	Jan
MMMM	Full name for Month.	January
dd	Number of the day in a month, ranging from 01 to 31 (decimal).	07, 31
HH	Hour, in 24-hour format.	22
hh	Hour, in 12-hour format.	11
MM	Number of the month, ranging from 01 to 12 (decimal).	08
mm	Number of the minute, ranging from 00 to 59 (decimal).	59
a	AM or PM	AM, PM
hh:mm:ss a	Time in the 12-hour format.	11:59:59 AM
HH:mm	Hour and minute format.	23:59
ss	Number of the second, ranging from 00 to 59 (decimal).	59
yy	Year without century, ranging from 00 to 99 (decimal).	04, 98
yyyy	Year (decimal).	2004, 1998
d	Number of the day in a month, ranging from 1 to 31 (decimal).	7, 31
DDD	Number of the day in a year, ranging from 001 to 366 (decimal).	365
u	Number of the day in a week, ranging from 1 to 7 (decimal). The value 1 indicates Monday.	2
w	Number of the week in a year. Sunday is the start of a week. The value ranges from 00 to 53.	23
W	Number of the week in a month, ranging from 0 to 5.	2
U	Number of the day in a week, ranging from 0 to 6 (decimal). The value 0 indicates Sunday.	5
EEE MMM dd HH:mm:ss yyyy	Standard date and time.	Tue Nov 20 14:12:58 2020
EEE MMM dd yyyy	Standard date without time.	Tue Nov 20 2020
HH:mm:ss	Standard time without date.	11:59:59
%s	UNIX Timestamp.	147618725

Examples

Table 3 lists common time standards, examples, and expressions.

**Table 3** Examples
Example	Time Expression	Time Standard
2022-07-14T19:57:36+08:00	yyyy-MM-dd'T'HH:mm:ssXXX	Custom
1548752136	%s	Custom
27/Jan/2022:15:56:44	dd/MMM/yyyy:HH:mm:ss	Custom
2022-08-15 17:53:23+08	yyyy-MM-dd HH:mm:ssX	Custom
2022-08-05T08:24:15.536+0000	yyyy-MM-dd'T'HH:mm:ss.SSSZ	Custom
2022-08-20T10:04:03.204000Z	yyyy-MM-dd'T'HH:mm:ss.SSSZ	Custom
2022-08-22T06:52:08Z	yyyy-MM-dd'T'HH:mm:ssZ	Custom
2022-07-24T10:06:41.000	yyyy-MM-dd'T'HH:mm:ss.SSS	Custom
Monday, 02-Jan-06 15:04:05 MST	EEEE, dd-MMM-yy HH:mm:ss Z	RFC850
Mon, 02 Jan 2006 15:04:05 MST	EEE, dd MMM yyyy HH:mm:ss Z	RFC1123
02 Jan 06 15:04 MST	dd MMM yy HH:mm Z	RFC822
02 Jan 06 15:04 -0700	dd MMM yy HH:mm Z	RFC822Z
2023-01-02T15:04:05Z07:00	yyyy-MM-dd'T'HH:mm:ss Z	RFC3339
2022-12-11 15:05:07	yyyy-MM-dd HH:mm:ss	Custom