This document explains how to use command line args and AWS tags to control how scotty writes data to cloud health and cloud watch.
In order to test writing to cloud health or cloud watch, soctty can run as either a production instance or a test instance for each system. For instance, a scotty instance could run in production mode for cloudwatch but test mode for cloudhealth.
To prevent two scotty instances from writing data for the same machine, the set of machines for which a test scotty instance writes data and the set of machines for which a production scotty writes data must be disjoint. To ensure this, each machine in AWS is designated as "for testing" or "for production". For example, a machine in AWS can be designated as "for testing" for cloud health but "for production" for cloud watch. We use AWS tags to make these designations.
--cloudHealthTest - If true, the scotty instance is a test instance for cloud health. The default is false.
--cloudWatchTest - If true, the scotty instance is a test instance for cloud watch. The default is false.
--cloudWatchFreq - How often to write data to cloudwatch, the default is "5m" (5 minutes).
ScottyCloudWatchTest - If present, the machine is a "test" machine for cloudwatch which means that only "test" scotty instances will write data to cloud watch for it. If not present, it implies the machine is for "production", and only "production" scotty instances will write data for it.
ScottyCloucHealthTest - If present, the machine is a "test" machine for cloudhealth. Only "test" scotty instances will write data for it. If not present, it implis the machine is for "production" and only "production" scotty instances will write data for it.
PushMetricsToCloudWatch - If not present, neither "test" nor "production" scotty instances will write data for this machine to cloud watch. If present, contains a duration such as "3m" (3 minutes) or "5m" (5 minutes). which indicates how often data is to be written to cloud health for that machine. If this tag is present but contains no value, or a value that can't be converted to a duration, then the --cloudWathFreq flag controls how often scotty writes data to cloud watch for that machine.