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Setting up the ESE license as a ConfigMap

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1. HiveMQ Enterprise Security Extension requires a separate license file, e.g. ese-license.elic, in the $HIVEMQ_HOME/license directory. To add the ese-license.elic along with the hivemq-license.lic, create a new configmap hivemq-license including all desired license files:

   Code Block
   kubectl create configmap hivemq-license --namespace=hivemq \ --from-file hivemq-license.lic \ --from-file ese-license.elic

2. Edit the values.yaml file of the hivemq-operator, section hivemq.configMaps. Update this:

   Code Block
   configMaps: [] # ConfigMaps 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

   To this:

   Code Block
   configMaps: - name: hivemq-license path: /opt/hivemq/license

   This will mount the content of the configMap hivemq-license to the directory /opt/hivemq/license of the hivemq-broker pods.

Prepare your HiveMQ Enterprise Security Extension configuration files

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Setting up the ESE config as a ConfigMap

1. Create a new configMap ese-config including all desired config files:

   Code Block
   language bash
   kubectl create configmap ese-config --namespace=hivemq \ --from-file config.xml \ --from-file ese-file-realm.xml

2. Edit the values.yaml file of the hivemq-operator, section hivemq.extensions. Update this:

   Code Block
   language yaml
   hivemq: extensions: ... - name: hivemq-enterprise-security-extension extensionUri: preinstalled enabled: false # Note that this is just an example initialization routine. Make sure this points to the current JDBC version you require for your configuration. initialization: | # Download JDBC driver for PostgreSQL [[ ! -f drivers/postgres-jdbc.jar ]] && curl -L https://jdbc.postgresql.org/download/postgresql-42.2.14.jar --output drivers/jdbc/postgres.jar

   To this:

   Code Block
   language yaml
   hivemq: extensions: ... - name: hivemq-enterprise-security-extension extensionUri: preinstalled enabled: true configMap: ese-config initialization: | [[ ! -f conf/config.xml ]] && [[ -f /conf-override/extensions/hivemq-enterprise-security-extension/config.xml ]] && ln -s /conf-override/extensions/hivemq-enterprise-security-extension/config.xml conf/config.xml && [[ ! -f conf/ese-file-realm.xml ]] && [[ -f /conf-override/extensions/hivemq-enterprise-security-extension/ese-file-realm.xml ]] && ln -s /conf-override/extensions/hivemq-enterprise-security-extension/ese-file-realm.xml conf/ese-file-realm.xml

Disable the default security extension

By default, the HiveMQ distribution comes with the allow-all extension that permits all MQTT connections without requiring authentication. Before you use HiveMQ in production, add an appropriate security extension and remove the HiveMQ allow-all extension.
To disable the extension, set the HIVEMQ_ALLOW_ALL_CLIENTS environment variable to false.
Edit the values.yaml file of the hivemq-operator, section hivemq.env. Update this:

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  env:
    - name: "HIVEMQ_ALLOW_ALL_CLIENTS"
      value: "false"

Update the configuration

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3. Get the external IP of the MQTT load balancer

   Code Block
   language bash
   mqttHost=$(kubectl get svc hivemq-hivemq-mqtt -o jsonpath='{.status.loadBalancer.ingress[0].ip}{"\n"}') mqttPort=$(kubectl get svc hivemq-hivemq-mqtt -o jsonpath='{.spec.ports[0].port}{"\n"}')

End-to-end testing of mqtt clients

1. Subscribe a mqtt client:

   Code Block
   language bash
   mqtt subscribe -h $mqttHost -p $mqttPort -t '#' -q 1 -u mqtt-user-1 -pw mqtt-password-1

   Do not close this terminal session. This will allow you to see the results.

2. From a different terminal session, publish a message to the topic “test”:

   Code Block
   language bash
   mqtt publish -h $mqttHost -p $mqttPort -t topic-1 -m Hello -q 1 -u mqtt-user-2 -pw mqtt-password-2

3. If everything is correct, the subscriber will receive the message:

   Code Block
   language bash
   mqtt subscribe -h $mqttHost -p $mqttPort -t '#' -q 1 -u mqtt-user-1 -pw mqtt-password-1

   Code Block
   language bash
   Hello

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