Cluster: Prepare Configuring a Cluster

The following pages cover how to create, configure, and manage a cluster.

SoftHSM and Cluster:
In case a SoftHSM is used on one of the cluster nodes, it is important to know that SoftHSM key material will not be synced between cluster nodes.

Unlock/Lock the Cluster Configuration

To make changes to the cluster configuration - for example, adding or deleting a node - you must first unlock the cluster configuration form. This is a security feature to prevent accidental changes to the cluster or simultaneous changes by different users. Proceed as follows:

1. Log in to your Software Appliance and open the Cluster page.

2. In the section Cluster Members, click Unlock to make changes.
   

   

3. You are notified that you have 5 minutes to make your changes. If you need more time, click Extend Lease to get another 5 minutes:
   

   

   Information about locks is shared among all cluster nodes:

   • When you retrieve a lease on Node1, all other nodes are notified that Node1 is holding the lease:
     

   

   A user on another node can click Acquire lease to request the lease from you / Node1.
   When you grant this, the lease will be held exclusively by that other node. It can only be requested again after it expires.