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KsysHA cluster creation

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You can create a cluster with multiple KSYS nodes. Primary node is the Group Leader (GL) node which is also known as the Managing Node and other nodes are the Non GL node. All the cluster operations are accessible only on the GL node. When the GL node is down, the subsequent node in the cluster becomes the new GL node (Managing Node).

Registering other KSYS nodes

To register other KSYS to the nodes, complete the following steps:
  1. Enable Register other KSYS option when you give multiple KSYS values in the KSYS node input field.
    Figure 1. KSYS Cluster Details screen
    Note: Multiple KSYS nodes must be separated by comma.
  2. Click Register other KSYS.
  3. Enter the KSYS Details.
    Figure 2. KSYS Details screen
  4. Click Register.

Case 1: GUI server and agent are on same system

If the GUI server and agent node are running on the system where KSYS are installed and serve as GL node, then the GUI is accessible only from the GL node. When the GL node gets down or becomes inaccessible, then the subsequent node become the GL node. You need to open the GUI from the subsequent node that is now the GL node and complete the agent registration again by using the new GL node details.
Example
If the KsysHa is configured with ksys114 and ksys112 systems. Consider ksys114 as the GL node and ksys112 as the Non GL node. If the GUI server is installed on ksys114 and the ksys114 gets shut down, consider the following:
  • GUI server is not accessible as it is on ksys114.
  • Subsequent node Ksys112 becomes the GL node (Managing node).
  • To re-register ksys112 agent and access the GUI, you need another GUI server machine.

Case 2: GUI server and agent are on different system

If KSYS and the GUI agent are running on the same system, but the GUI server is running on a different machine, then the GUI is accessible from the system where the server is installed. During cluster creation, the user must register all nodes (both GL and non GL). If a GL node goes down or becomes inaccessible, you will receive that information or a toast notification on the GUI. You can then select a new management node from the available drop-down menu.

Example

If the GUI server is installed on ksys310 system and the KsysHa is configured with ksys113 and ksys114 systems. Consider ksys113 as the GL node and ksys114 as the Non GL node. If the ksys113 gets shut down, then the Subsequent node ksys114 becomes the GL node (Managing node), consider the following actions:

  • An information or toast message for the GL node changes is triggered on GUI.
  • To access the GUI, you can select a new managing node Ksys114 from the available drop down.
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