Category Archives: App Engine

Download / Export Google App Engine Logs

To download Google App Engine request logs, run something similar like this in the command prompt:

D:\Google\appengine-java-sdk-1.8.9\bin>appcfg --num_days=30 --severity=4 --request_logs D:\MyAppEngineProject\war D:\MyAppEngineProject\requests.log

–num_days=…
The number of days of log data to retrieve, ending on the current date at midnight UTC. A value of 0 retrieves all available logs. If –append is given, then the default is 0, otherwise the default is 1.

–severity=…
The minimum log level for the log messages to retrieve. The value is a number corresponding to the log level: 4 for CRITICAL, 3 for ERROR, 2 for WARNING, 1 for INFO, 0 for DEBUG. All messages at the given log level and above will be retrieved. Default is 1 (INFO).