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Agent logging information can help you troubleshoot issues that are local to an AppDynamics app agent. This topic describes how to work with agent logs.
Accessing Log-Related Agent Operations
To access agent logging operations in the Contrroller UI, navigate to the following location: Node Dashboard > Agents tab > App Server Agent tab > Agent Operations.
Get Agent Log Files and Thread Dump Samples
Requesting log files causes the agent to send the contents of its logs directory as a zip file to the Controller. From there, you can download the zip to your local machine.
The following agent-specific considerations apply to logging sessions:
- For the Java Agent or PHP Agent, you can get all logs or choose from these alternatives:
- Output from a specific logger at a set level, for a fixed duration. For a list of supported loggers, see Java Supported Environments.
- Thread dump samples. The agent takes a thread dump according to the specified collection interval and specified number to collect. After the interval elapses the are uploaded by the agent as a zip file.
- For the Node.js agent, the proxy logs are available.
- For the Python Agent, if you choose All logs in the logs directory, you get both the proxy logs and the agent logs. The agent log contains the log messages that it is configured to log in the agent configuration file. See Python Agent Settings.
Enter a name for your request to prepend the generated zip file with your name. For example, a name of "CurrentTime" produces a zip file named similar to CurrentTime_Node_8000_1390503141046.zip.
While the status is PENDING, you can click Refresh button to update the status field. Once the request succeeds, as indicated by the status, right click the agent operation name for your request and choose Download Data.
If SUCCESSFUL doesn't eventually appear in the status for the request, the request may have timed out. A request can time out due to incorrect request parameters or if the server becomes unavailable. In this case, right-click the request and choose Delete Data and retry the request.
Start an Agent Logging Session
For Java, you can generate log information with specific type of logging information. For the Node.js and Python agents, the log information generated is from the proxy only.
- Confirm that you have enough disk space to create the logs before starting a logging session. Log file requests fail if there is not enough disk space available. The disk space required depends on application activity. If you are uncertain about the amount of space required, try conducting an agent logging session with the shortest duration and closely monitor the disk space on the monitored machine.
- Click the Start Agent Logging Session button in the Agent Operations panel.
Choose the duration for the logging session and the debug logger types to initiate. The logger type determines the type of information captured with these options:
Logging Session Type
Type of Information
Application Wide Configuration
Application configuration changes
Business Transaction Registration
Transaction, exit identification, self resolution
Requests to synch up the clock skew between the controller and the agent
Changes in application state that are of potential interest
One Way Agent
For system (machine) agent only, information from the capture feature
Request Segment data
Snapshot upload of request segment
System Agent Registration
System (machine) agent registration
System Agent Reregistration
System (machine) agent reregistration
System Agent Polling Handler
System (machine) agent configuration request
Relates to the machine agent where you can create a task to execute on a machine, such as restart application server and run a script
Top Summary Stats
Request to upload the 'most expensive backend' summary
Configuration change requests
Activity of transient channel that is used to upload and download instructions for JMX console live data
Click Start Agent Logging Session.
Each selected session type appears in the session panel with a start time and end time based on the selected Duration of logging session.
Submitting Log Files to Support
When submitting log files to AppDynamics Support, ensure you send the entire contents of the agent logs directory available as a ZIP file for download when you request the agent logs.