Management of referenced DataChain Instances

In summary

  • DC-Maestro allows to reference existing DataChain Instances that share the same user account manager

  • Only DC-Maestro administrators can reference Instances

  • Referenced Instances are available to all DC-Maestro users

  • The instance status allows you to view the status of the connection between DC-Maestro and DataChain

  • Instance must be connected Connected and selected Selected by a user to be able to create and modify Schedules (choose Projects and DataChain items)

  • Each time a Schedule is run, DC-Maestro interacts with the DataChain instance: if this instance is not available Connection impossible, the Schedule’s tasks cannot be executed.

DC-Maestro does not allow actions on DataChain Instances or users (these actions must be performed by a DataChain administrator, in DataChain)

Referencing Instances

DC-Maestro makes it possible to reference several DataChain Instances connected to the same user account manager (KeyCloack, or other).
To reference an Instance, the user must have the DC-Maestro Administrator role.

To sequentially follow the steps for referencing an Instance, refer to the tutorial Referencing an Instance.

Connection statuses

The connection status allows you to know at any time the state of the connection between DC-Maestro and DataChain.

Instances 1. Connection Status
Status Meaning

Connection Search

DC-Maestro attempts to connect to a DataChain Instance

Connected instance

The DataChain Instance is connected with DC-Maestro

Unconnected

The connection could not be established.
Check if the Instance is directly accessible. If not, the setting is incorrect and must be changed. Should the connection persistently fail despite correct settings, reach out to a DataChain administrator.

Modify an Instance

It is possible to modify an Instance at any time.
Note that incorrect connection parameters will impact all the Instance Schedules: if the Instance is unreachable, no Schedule can be executed and the DataChain elements will no longer be accessible from DC-Maestro.

To modify the connection parameters or metadata of the Instance, click on the icon Parameters visible when hovering over the Instance card from Instances list.

Instance dereferencing

Dereferencing has no impact on the DataChain Instance: the action is only visible in DC-Maestro.

To dereference an Instance, click on the Settings icon visible when hovering over the Instance card from Instances list, then on Dereference, at the bottom left.
Validate the action from the confirmation popup: the Instance is instantly deleted from DC-Maestro.

It is not possible to delete an Instance that contains Schedules.