OmnisOS is not supported by Datadog, and the install from source doesn’t directly work.
A Datadog user managed to tweak the install from source script to have the Agent work in OmniOS v11 r151018. Additionally, this might work with similar operating systems (SmartOS/OpenIndiana/Nexenta).
Note: The memory metrics may not be captured.
This attachment contains instructions, courtesy of Joseph Boren, that may help you install the Datadog Agent.
Note: This is not supported or tested by Datadog. OmnisOS remains an OS not supported by Datadog.