Is when the unit is waiting to be provisioned by the tsuru provisioner.
Is while the unit is provisioned, it’s occurs while a deploy.
Is when the an error occurs caused by the application code.
Is when an error occurs caused by tsuru internal problems.
Is when the app process is up, but it is not bound to the right host (“0.0.0.0”) and/or right port ($PORT). If your process is a worker it’s state will be unreachable.
Is when the app process is up binded in the right host (“0.0.0.0”) and right port ($PORT).