How should security patching be applied in a multi-node Qlik Sense environment?

In a multi-node Qlik Sense environment, it is crucial to manage security patching carefully to ensure the system remains stable and secure. Installing patches on each node in turn is the recommended approach because it allows the system to maintain operational continuity while minimizing downtime.

By patching one node at a time, you can ensure that the other nodes in the environment remain operational. This method allows for better monitoring of the patch process, helping to quickly identify if any issues arise due to the newly installed patch. If problems do occur on the patched node, it can be addressed without affecting the entire environment, as the remaining nodes are still functional.

Additionally, this sequential approach allows for testing and validation of the patches in a controlled manner. As each node is patched, administrators can verify that the updates have been successfully applied and that there are no conflicts before proceeding to the next node.

In contrast, installing patches on all nodes simultaneously increases the risk of systemic failures and complicates troubleshooting efforts. Patch management must prioritize stability and reliability, making the turn-by-turn method the best practice for securing a multi-node Qlik Sense environment.