# Profiling Multiple Products Hosted on a Single IIS Server

## **Problem**

When **hosting multiple products on a single IIS server**, how can you configure dedicated Sealights environment variables (`SL_LABID`, `SL_BUILDSESSIONFILE`) for each product, **given that IIS (WAS/W3SVC) registry entries are shared across all applications**?

## **Solution**

Use the `SL_COVERAGECOLLECTOR_PREDEFINEDSESSIONS` variable to define a **preconfigured sessions file** **that maps each product to its specific Sealights parameters** based on the application pool.

### **Example Setup**

Let's say your IIS server runs two apps:

<table><thead><tr><th width="167.6666259765625"></th><th>StockManager</th><th>OnlineShop</th></tr></thead><tbody><tr><td>App Path</td><td><code>C:\inetpub\wwwroot\StockManager</code></td><td><code>C:\inetpub\wwwroot\OnlineShop</code></td></tr><tr><td>IIS App Pool</td><td><code>StockManagerAppPool</code></td><td><code>OnlineShopAppPool</code></td></tr><tr><td>Lab ID</td><td><code>StockManager_EnvQA1</code></td><td><code>OnlineShop_EnvUAT1</code></td></tr><tr><td>BSID File location</td><td><code>C:\inetpub\wwwroot\StockManager\buildSessionId.txt</code></td><td><code>C:\inetpub\wwwroot\OnlineShop\buildSessionId.txt</code></td></tr></tbody></table>

### Configuration

You'll have to use the following setup:

{% stepper %}
{% step %}
**Create the sessions JSON file**

Create a `collector-sessions.json` file with the below content :

```json
{
  "sessions": [
    {
      "session": {
        "buildSessionId": "C:\\inetpub\\wwwroot\\StockManager\\buildSessionId.txt",
        "labId": "StockManager_EnvQA1"
      },
      "coverageCollector": {
        "applicationPool": "StockManagerAppPool"
      }
    },
    {
      "session": {
        "buildSessionId": "C:\\inetpub\\wwwroot\\OnlineShop\\buildSessionId.txt",
        "labId": "OnlineShop_EnvUAT1"
      },
      "coverageCollector": {
        "applicationPool": "OnlineShopAppPool"
      }
    }
  ]
}
```

{% endstep %}

{% step %}
**Refer to this file in the IIS Env Vars**

Assuming your current installation path is in the `C:\Sealights` directory (update the below according to your environment):

{% code overflow="wrap" %}

```
COR_ENABLE_PROFILING=1
COR_PROFILER={01CA2C22-DC03-4FF5-8350-59E32A3536BA}
COR_PROFILER_PATH=C:\Sealights\Agent\SL.DotNet.ProfilerLib.Windows_x64.dll
COR_PROFILER_PATH_32=C:\Sealights\Agent\SL.DotNet.ProfilerLib.Windows_x86.dll
COR_PROFILER_PATH_64=C:\Sealights\Agent\SL.DotNet.ProfilerLib.Windows_x64.dll
CORECLR_ENABLE_PROFILING=1
CORECLR_PROFILER={01CA2C22-DC03-4FF5-8350-59E32A3536BA}
CORECLR_PROFILER_PATH_32=C:\Sealights\Agent\SL.DotNet.ProfilerLib.Windows_x86.dll
CORECLR_PROFILER_PATH_64=C:\Sealights\Agent\SL.DotNet.ProfilerLib.Windows_x64.dll
SL_PROFILER_INITIALIZECOLLECTOR=1
SL_TOKENFILE=C:\Sealights\sltoken.txt
SL_COVERAGECOLLECTOR_PREDEFINEDSESSIONS=C:\Sealights\collector-sessions.json
SL_LOGLEVEL=Debug
SL_LOGGING_TOFILE=true
SL_LOGDIR=C:\Sealights\Logs
```

{% endcode %}

{% hint style="info" %}
Logging is shared across all sessions. You cannot define a separate log directory per application.
{% endhint %}
{% endstep %}

{% step %}
**Configure the rest as usual**

See [Configuring the Profiler-Initiated Collector > Specific configurations > IIS/Windows](https://docs.sealights.io/knowledgebase/setup-and-configuration/sealights-agents-and-plugins/.net-core-agent/capturing-coverage-from-the-application/configuring-the-profiler-initiated-collector#iis-windows)
{% endstep %}
{% endstepper %}

{% hint style="success" %}
When these steps are complete, new entries will appear in **Cockpit > Live Agents Monitor**: a `testListener` and an entity named `Profiler`, for each entry listed in the session file with each version details and the IIS AppPool shown in the **Tag** column
{% endhint %}


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