Every execution in Domino is hosted in a Kubernetes pod on a type of node specified by the selected Hardware Tier.
The pod hosting a Domino execution contains the following containers:
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The main execution container where user code is executed.
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An NGINX container for handling web UI requests.
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An executor support container that manages various aspects of the lifecycle of a Domino execution, such as transferring files or syncing changes back to the Domino file system.