When a node that was a part of the Audit Store cluster was down or unregistered is started again, then it would already have the Audit Store configurations. Similarly, due to issues during an upgrade, a node might not complete the Audit Store cluster registration process. In this case, the node appears with an orange icon (). Register the node using the Register button to add the node to the Audit Store cluster.
Perform the following steps to register a node:
Navigate to Audit Store > Cluster Management > Overview > Nodes.
Click Register ().
The node will be a part of the cluster and a black node icon () will appear.
When a node goes down, such as due to a crash or for maintenance, then the node is greyed out (). Additionally, if a node gets corrupted, then it is not possible to log in to the node to remove it from the Audit Store cluster. In these case, disconnect the node from the cluster using the Unregister button. A disconnected node can be added back to the cluster later, if required.
Perform the following steps to remove the disconnected node:
Navigate to Audit Store > Cluster Management > Overview > Nodes.
Click Unregister ().
The node will still be a part of the cluster, however, it will not be visible in the list.