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Advanced guide
Live tail message format
Live tail output of each source can be customized in Live tail by clicking on the gear icon in the upper right corner:
The Live tail message format is a freeform text template with columns wrapped in {column}
brackets.
LEVEL: {level}, PID: {context.system.pid}, THREAD: {context.runtime.thread_id}
Conditional rendering can be achieved by piping multiple values
LEVEL: {level}, THREAD or PID: {context.runtime.thread_id|context.system.pid}
If you have special characters in your fields such as dots, you can use square brackets instead:
LEVEL: {level}, THREAD: {context["thread.id"]}
Colors
You can format and color your logs using a subset of ANSI codes in your log messages.
For example, this is how you could format your logs using our JavaScript client:
logger.info("Logs can be \u001B[1mbold\u001B[0m, \u001B[31mred\u001B[0m, or \u001B[1;32mbold green\u001B[0m.");
Here's the result you would see in Live tail:
Supported colors
Live tail supports 31-36
and 91-96
code ranges for colors in both light and dark themes.
Supported font styles
- Bold: ANSI code
1
- Light: ANSI code
2
- Italic: ANSI code
3
- Underline: ANSI code
4
Style reset
Each font color or style needs to be reset by reset all modes
(0
) ANSI code. Better Stack Live tail doesn't support resetting a color or a style by starting a new one.