Question
Can a new license be added while the existing license is about to expire?
Can we add a new license when the application is still running on the old license?
Answer
Yes, HiveMQ allows you to replace licenses at runtime, this means you can add/delete licenses to the license folder and HiveMQ will update the used license accordingly. If you have multiple licenses in the license folder HiveMQ will pick the “best” license.
Question
How to add the new license to HiveMQ?
Answer
Put the license into the license folder.
Question
How to add the new license to HiveMQ in k8s?
Answer
https://www.hivemq.com/docs/operator/4.8/kubernetes-operator/configuration.html#license
One license:
kubectl create configmap hivemq-license \ --from-file license1.lic -o yaml \ --dry-run | kubectl apply -f -
Two and more licenses:
kubectl create configmap hivemq-license \ --from-file license1.lic -o yaml \ --from-file license2.lic -o yaml \ --dry-run | kubectl apply -f -
Answer
How do I know which license is used by my HiveMQ at the moment?
Question
The information is logged in the hivemq.log. The information is logged shortly after the start. Once a new license file is detected and it is “better” than the current license, HiveMQ will pick up a new “better” license and log the information about the license to the hivemq.log.
Answer
How long does it take for HiveMQ to notice the new license file and update the license?
Question
It takes milliseconds after the license is in the License Directory.
For HiveMQ Kubernetes, it is seconds from the moment when you apply the new (updated) configMap to the moment when the files are mapped to the License Directory path in the HiveMQ pod.