The Live Tail feature gives you the ability to see all your log events in near real time from anywhere in your infrastructure. It displays logs as soon as they get out of the Pipeline section and before they are indexed by Datadog, hence:
This feature allows you, for instance, to check if a process has correctly started, or if a new deployment went smoothly.
Choose the Live Tail option in the time range selector to switch to the Live Tail view:
The number of received events per second is displayed at the top left, as well as the sampling rate. Since a stream of thousands of logs per second is not human readable, high throughput log streams are sampled.
Use the Live Tail search bar filtering features to filter the log stream and the Pause/Play button at the top right of the screen to pause or resume the stream.
Note: Selecting any log pauses the stream and displays more details about the selected log.
Customize the Live Tail view to better highlight the relevant information in your logs. Click on the gear at the top right of the page to activate one of the options below:
A valid query in the search bar displays logs that match your search criteria. The search syntax is the same in the Live Tail views as in the other Log views, but here, your query is matched against all of the ingested logs and not just the indexed ones.
Any query that works in other views works in the Live Tail view, but you can even go further and filter on attributes that are not defined as facets.
For example, to filter on the following filename attribute there are two options:
Click on the attribute and add it to the search:
Use the following query @filename:runner.go:
To filter on all logs with a line number above 150 use the following query: @linenumber:>150
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