IIS Application Pools Monitoring
Monitor IIS Application Pool availability and perform remote start, stop, and recycle operations without RDP access.
Application Pools State Evaluation
| State | Status | Description | Actions | |
|---|---|---|---|---|
| Unavailable | Service not available | If the server can't be reached and evaluated either due to network or security-related problems | Review prerequisites | |
| Error | Error state raised | The 'Application Pool' is in the stopped state | Details Start Recycle | |
| Warning | Warning state raised | Not implemented | N/A | |
| OK | Online | The 'Application Pool' is in the started state | Details Stop Recycle |
Application Pools Available Actions
For the IIS Application Pools Category, the Windows Server Monitoring Agent provides the following Remote Actions:
List of Actions for Application Pools.
App Pool Details
New 6.4.0.0 Select the Details option to view comprehensive configuration information about an Application Pool without requiring RDP access.
The following configuration details are displayed:
- Status - Current operational state (Started/Stopped)
- Auto Start - Whether the app pool starts automatically with IIS
- Managed Pipeline Mode - Integrated or Classic mode
- Start Mode - OnDemand or AlwaysRunning
- Queue Length - Maximum number of queued requests
- CPU Limit - CPU usage threshold (percentage)
- CPU Action - Action taken when CPU limit is exceeded
- Runtime Version - .NET CLR version
- Enable 32-Bit Apps - Whether 32-bit applications are supported
- Maximum Worker Processes - Number of worker processes (Web Garden configuration)
- CPU Reset Interval - Time period for CPU limit reset
Note
This diagnostic information helps troubleshoot performance issues and verify configuration without logging into the server.
Start Application Pool
Start the selected Application Pool.
You will be prompted to confirm the operation.
The Windows Server Monitoring Agent contacts the IIS instance and starts the Application Pool. The result appears on the screen.
Here's an example of a successful start Application Pool operation.
Stop Application Pool
Stop the selected Application Pool.
You will be prompted to confirm the operation.
The Windows Server Monitoring Agent contacts the IIS instance and stops the Application Pool. The result appears on the screen.
Here's an example of a successful stop Application Pool operation.
Warning
Stopping an Application Pool will immediately terminate all applications using it. Active user sessions will be lost.
Recycle Application Pool
Recycle the selected Application Pool to release resources and apply configuration changes.
You will be prompted to confirm the operation.
The Windows Server Monitoring Agent contacts the IIS instance and recycles the Application Pool. The result appears on the screen.
Here's an example of a successful recycle Application Pool operation.
Note
Recycling an Application Pool is less disruptive than stopping/starting. The worker process is gracefully shut down and a new one is started, minimizing downtime.
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Related Topics
IIS Overview - Main IIS monitoring page
IIS - Web Sites - Monitor and manage Web Sites
IIS - FTP Sites - Monitor and manage FTP Sites
Windows Server Monitoring Agent
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