Environment Variables

Environment variables are used by ska-oso-scripting to define the execution environment and which Tango devices should be controlled. This in turn modifies the behaviour of the code, giving different behaviour depending on whether the code is running in an SKA MID environment (default) or an SKA LOW environment. For example, when configured for SKA MID, connections to a subarray will connect to an SKA MID subarray, and validation code will reject CDM payloads intended for SKA LOW.

Environment variables recognised by ska-oso-scripting

Variable	Default value	Description
SKA_TELESCOPE	skamid	Controls the behaviour of telescope-specific functions to expect SKA LOW (skalow) or SKA MID (skamid). If the environment variable is not recognised, skamid will be assumed.
CENTRALNODE_FQDN	ska_mid/tm_central/central_node	The fully-qualified domain name (FQDN) of the TMC CentralNode Tango device. If left unset, an appropriate FQDN for SKA MID will be used.
SUBARRAYNODE_FQDN_PREFIX	ska_mid/tm_subarray_node	Prefix to use when constructing the FQDN for a TMC SubarrayNode Tango device. If left unset, an appropriate FQDN prefix for SKA MID will be used.
ODA_URL	null	The base API location for an instance of the ODA, to be used to create and update Execution Blocks. For example, https://k8s.stfc.skao.int/button-dev-ska-db-oda/oda/api/v1/