Filtering Live Tail by Level and Service

Narrow the live stream to see exactly what matters.

Level Filter

Click the level dropdown to select which log levels appear:

• All — shows everything (debug through fatal)
• Error + Fatal — useful during deployments to catch breaking changes
• Warning and above — moderate filter for monitoring
• Single level — isolate a specific level for investigation

Service Filter

If you have multiple services sending to the same project, the service filter lets you focus on one:

• Select a single service to watch
• Select multiple services to see their interaction
• Leave unselected to see all services

Combining Filters

Level and service filters combine with AND logic. For example:

• Level = Error + Service = payment-service → only payment service errors

Tips for Effective Live Tailing

1. Start broad, then narrow — begin with all levels, then filter down as you identify the area of interest
2. Pause before scrolling — the stream moves fast in high-traffic apps. Pause first, then scroll up
3. Use during deployments — open Live Tail before deploying, filtered to errors, and watch for new issues