Prior to connecting nodes, you should make sure that they have hierarchy mode enabled, their node profiles have been configured, and certificates have been created for the nodes. Parent and child nodes must exchange their certificates over encrypted communication channels.
Nodes in the hierarchy must be connected in the following order:
Before you connect the nodes, make sure that the system time on the machines is synchronized with an NTP server. For more details, please refer to the appropriate documentation for Oracle Linux and for Astra Linux Special Edition.
When a connection is established, the parent node polls its child nodes for their available hierarchy data every 5 minutes, and thereby identify the structure of their available branch of the hierarchical tree. This data is displayed in the KUMA web interface under Settings → Hierarchy → Structure after the web page is refreshed.
Information about the hierarchical structure can be manually refreshed by using the Update structure button. To display the updated data, you must refresh the page of your web browser.