Apache Geode CHANGELOG

Organizing Peers into Logical Member Groups

In a peer-to-peer configuration, you can organize members into logical member groups and use those groups to associate specific data or assign tasks to a pre-defined set of members.

You can use logical member groups to deploy JAR applications across multiple members or to execute functions across a member group.

To add a peer to a member group, you can configure the following:

Add the member group names to the gemfire.properties file for the member. For example:
```
#gemfire.properties
groups=Portfolios,ManagementGroup1
```
A member can belong to more than one member group. If specifying multiple member groups for a member, use a comma-separated list. Alternatively, if you are using the gfsh command interface to start up the member, provide the group name or group names as a parameter.

For example, to start up a server and associate it with member groups, you could type:
```
gfsh>start server --name=server1 \
--group=Portfolios,ManagementGroup1
```
For example, to start up a locator and associate it with member groups, you could type:
```
gfsh>start locator --name=locator1 \
--group=ManagementGroup1
```
Then you can use the member group names to perform tasks such as deploy applications or execute functions.

For example, to deploy an application across a member group, you could type the following in gfsh:
```
gfsh>deploy --jar=group1_functions.jar --group=ManagementGroup1
```