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| About the cluster-level user | ||
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You can add a cluster-level user by specifying the user name without the domain name. A cluster-level user can log in from any node in the cluster with the privilege that was assigned to the user. For example, if you add user1 to a cluster with four nodes (sys1, sys2, sys3, and sys4), user1 can access all four nodes with the privileges that were assigned at the cluster-level.
Adding users at the cluster-level offers the following advantages:
Adding a cluster-level user requires only one entry per cluster. Adding a user at node level requires multiple entries, one for each node that the user is added to. To allow a user to operate from all four nodes in the cluster, you need four entries- user1@sys1, user1@sys2, user1@sys3, and user1@sys4.
Adding, updating, and deleting privileges at the cluster-level is easier and ensures uniformity of privileges for a user across nodes in a cluster.