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How to use Kubernetes Secret to specify HiveMQ license with HiveMQ Operator.
HiveMQ requires a license as a file in /opt/hivemq/license directory. There are 3 ways to add the license with HiveMQ Operator:

  1. as a raw value in the values.yaml file,

  2. as a configMap in the values.yaml file,

  3. as a secret in the values.yaml file.

This article explains how to use Kubernetes Secret to specify a HiveMQ license with HiveMQ Operator.

\uD83D\uDCD8 Instructions

  1. Edit the values.yaml file to specify that the license file is contained in hivemq-license secret, which will be mounted to the directory /opt/hivemq/license

    hivemq:
...
  secrets: 
  # Secrets to mount to the HiveMQ pods. These can be mounted to existing directories without shadowing the folder contents as well.
  - name: hivemq-license
    path: /opt/hivemq/license
...

  2. If there is no namespace for the HiveMQ, then create one and switch the kubectl context to it

    kubectl create ns hivemq
kubectl ns hivemq

  3. Create the secret with nave hivemq-license in the namespace hivemq from the license file hivemq-2023.lic

    kubectl create secret generic hivemq-license \
  --from-file hivemq-license.lic \
  --namespace hivemq

  4. Install HiveMQ with the release name hivemq-mine from the Helm chart hivemq-operator to the namespace hivemq and use parameter values from the file values.yaml

    helm upgrade hivemq-mine \
  --install hivemq/hivemq-operator \
  --namespace hivemq\
  --values values.yaml

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