---
title:  Interactive Configuration Reference for the tc Server Module
---

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This section describes each prompt when entering into interactive configuration mode of the <%=vars.product_name%> HTTP Session Management Module for tc Server.

``` pre
  Please enter a value for 'geode-cs.maximum.vm.heap.size.mb'. Default '512':
  Please enter a value for 'geode-cs.initial.vm.heap.size.mb'. Default '512':
  Please enter a value for 'geode-cs.cms.initiating.heap.percentage'. Default '50':
```

The above properties allow you to fine-tune your JVM heap and garbage collector. For more information, refer to [Managing Heap and Off-heap Memory](../../managing/heap_use/heap_management.html#resource_manager).

``` pre
  Please specify whether to enable a <%=vars.product_name%> listener that logs session create, 
  update, destroy and expiration events. Default 'false':
```

The above property determines whether a debug cache listener is added to the session region. When true, info-level messages are logged to the <%=vars.product_name%> log when sessions are created, updated, invalidated, or expired.

``` pre
With the geode-p2p template:
  Please specify whether to maintain a local <%=vars.product_name%> cache. Default 'false':
  
With the geode-cs template:
  Please specify whether to maintain a local <%=vars.product_name%> cache. Default 'true':
```

The above property determines whether a local cache is enabled; if this parameter is set to true, the app server load balancer should be configured for sticky session mode.

``` pre
With the geode-p2p template:
  Please enter the id of the attributes of the <%=vars.product_name%> region used to cache 
      sessions.
  Default 'REPLICATE':

With the geode-cs template:
  Please enter the id of the attributes of the <%=vars.product_name%> region used to cache 
      sessions.
  Default 'PARTITION_REDUNDANT':
```

The above property determines the ID of the attributes for the cache region; possible values include PARTITION, PARTITION\_REDUNDANT, PARTITION\_PERSISTENT, REPLICATE, REPLICATE\_PERSISTENT, and any other region shortcut that can be found in [Region Shortcuts and Custom Named Region Attributes](../../basic_config/data_regions/region_shortcuts.html). When using a partitioned region attribute, it is recommended that you use PARTITION\_REDUNDANT (rather than PARTITION) to ensure that the failure of a server does not result in lost session data.

``` pre
  Please enter the name of the <%=vars.product_name%> region used to cache sessions. 
  Default 'gemfire_modules_sessions':
```

The above property determines the <%=vars.product_name%> region name.

``` pre
  Please enter the port that Tomcat Shutdown should listen on. Default '-1':
  Please enter the port that the JMX socket listener should listen on. 
      Default '6969':
```

The above properties are application server properties.

``` pre
  Please enter a value for 'bio.http.port'. Default '8080':
  Please enter a value for 'bio.https.port'. Default '8443':
```

tc Server requires information about connector ports. `bio.http.port` is the http port for tc Server and `bio.https.port` is the secure http port for tc Server.

``` pre
With the geode-p2p template:
  Please enter the name of the <%=vars.product_name%> cache configuration file. 
  Default 'cache-peer.xml':
  
With the geode-cs template:
  Please enter the name of the <%=vars.product_name%> cache configuration file. 
  Default 'cache-client.xml':
```

You can change the name of the cache configuration file with the above property. If you do change this value, be sure to include an xml file by that name in the `conf` subdirectory.

``` pre
  Please enter the percentage of heap at which updates to the cache are refused.
  0.0 means disabled. Default '0.0':
  Please enter the percentage of heap at which sessions will be evicted from the 
  local cache. Default '80.0':
```

The above properties allow you to control the critical and eviction watermarks for the heap. By default, the critical watermark is disabled (set to 0.0) and the eviction watermark is set to 80%.

``` pre
Please enter the list of locators used by <%=vars.product_name%> members to discover each other. 
The format is a comma-separated list of host[port]. Default ' ':
```

The above property specifies the list of locators.

``` pre
  Please enter the name of the file used to log <%=vars.product_name%> messages. 
  Default 'gemfire_modules.log':
```

The above property determines the file name for the <%=vars.product_name%> log file.

``` pre
Applicable to the geode-p2p template ONLY:
  Please specify whether to rebalance the <%=vars.product_name%> cache at startup.
  Default 'false':
```

This property allows you to rebalance a partitioned <%=vars.product_name%> cache when a new <%=vars.product_name%> peer starts up.

``` pre
  Please enter the name of the file used to store <%=vars.product_name%> statistics. 
  Default 'gemfire_modules.gfs':
```

The above property determines the filename for the <%=vars.product_name%> statistics file.

``` pre
  Please specify whether <%=vars.product_name%> statistic sampling should be enabled. 
  Default 'false':
```

The above property determines whether statistics sampling should occur. See [Statistics](../../managing/statistics/chapter_overview.html) for more information.