Monkeys are configured using three configuration files. simianarmy.properties configures the global settings that can be shared by all monkeys. client.properties configures the client to be used (currently AWS and VSphere are supported). <monkey-name>.properties configures the behaviour of the specific monkey. For example, chaos.properties configures the behavior of Chaos Monkey, like which groups to terminate with which probability etc., and janitor.properties contains properties like which resource types to manage and what rules are used to find unused resources.
The system property simianarmy.properties specifies the location of the properties files used to configure the monkeys. The default properties files "/simianarmy.properties", "/client.properties", and "<monkey-name>.properties" are located at the root of one of the classpath directories. See the defaults in the github repo.
$ java -Dsimianarmy.properties=/path/to/my/simianarmy.properties ...
simianarmy.properties contains the common settings that can be shared by all monkeys, e.g. the schedules of running monkeys or the calendar. You can check the details here.
client.properties configures the client to be used. Currently AWS and VSphere are supported. Example configuration file can be seen here.