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| Device Registry |
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| HTTP Adapter |
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| AMQP Adapter |
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| Kura Adapter |
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| Sigfox Adapter |
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| Load Tests with JMeter |
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| Common Configuration |
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| Device Registry Configuration |
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| Device Connection Service Configuration |
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| HTTP Adapter Configuration |
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| AMQP Adapter Configuration |
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| MQTT Adapter Configuration |
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| Kura Adapter Configuration |
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| Hono Client Configuration |
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| <li data-nav-id="/hono/docs/dev/admin-guide/amqp-network-config/" title="AMQP 1.0 Messaging Network Configuration" class="dd-item "> |
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| AMQP 1.0 Messaging Network Configuration |
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| Secure Communication |
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| Monitoring & Tracing |
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| Building from Source |
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| Consuming Messages from Java |
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| <a href="/hono/docs/dev/dev-guide/custom_http_adapter/"> |
| Implement a Custom Hono HTTP Protocol Adapter |
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| <li data-nav-id="/hono/docs/dev/api/telemetry/" title="Telemetry API Specification" class="dd-item "> |
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| Telemetry API |
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| <li data-nav-id="/hono/docs/dev/api/event/" title="Event API Specification" class="dd-item "> |
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| Event API |
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| <li data-nav-id="/hono/docs/dev/api/command-and-control/" title="Command & Control API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/command-and-control/"> |
| Command & Control API |
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| <li data-nav-id="/hono/docs/dev/api/tenant/" title="Tenant API Specification" class="dd-item "> |
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| Tenant API |
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| <li data-nav-id="/hono/docs/dev/api/device-connection/" title="Device Connection API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/device-connection/"> |
| Device Connection API |
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| <li data-nav-id="/hono/docs/dev/api/device-registration/" title="Device Registration API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/device-registration/"> |
| Device Registration API |
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| <li data-nav-id="/hono/docs/dev/api/credentials/" title="Credentials API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/credentials/"> |
| Credentials API |
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| <li data-nav-id="/hono/docs/dev/api/authentication/" title="Authentication API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/authentication/"> |
| Authentication API |
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| <li data-nav-id="/hono/docs/dev/api/management/" title="Device Registry Management API Specification" class="dd-item "> |
| <a href="/hono/docs/dev/api/management/"> |
| Device Registry Management API |
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| Metrics |
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| <h1>Helm based Deployment</h1> |
| |
| |
| |
| |
| |
| <p>Eclipse Hono™’s components are provided as container images which can be run on arbitrary container orchestration platforms. |
| This page describes the steps necessary to deploy Hono to a <a href="https://kubernetes.io">Kubernetes</a> cluster using the <a href="https://helm.sh">Helm package manager</a>.</p> |
| |
| <div class="alert alert-notice"> |
| <h4 class="alert-heading"><i class="fas fa-info-circle"></i> Note</h4> |
| <div>The example configuration that comes with Hono and which is used in this guide is supposed to be used for evaluation and development purposes only.</div> |
| </div> |
| |
| |
| <h2 id="prerequisites">Prerequisites</h2> |
| |
| <h4 id="kubernetes-cluster">Kubernetes Cluster</h4> |
| |
| <p>The most basic requirement is, of course, a Kubernetes cluster to deploy to. |
| The <a href="/hono/docs/dev/deployment/create-kubernetes-cluster/">Kubernetes setup guide</a> describes options available for setting up a cluster.</p> |
| |
| <h4 id="helm">Helm</h4> |
| |
| <p>Helm is a tool for managing (complex) Kubernetes applications. In this guide it is used to deploy Hono to the cluster. |
| <a href="https://docs.helm.sh/install/">Helm’s installation instructions</a> provide more details.</p> |
| |
| <h4 id="kubectl">Kubectl</h4> |
| |
| <p>The kubectl tool is used to manage a Kubernetes cluster from the command line. In this guide it is used to retrieve information about Hono’s service endpoints from the cluster. |
| The <a href="https://kubernetes.io/docs/tasks/tools/install-kubectl/">installation guide</a> provides instructions for setting up <code>kubectl</code> locally.</p> |
| |
| <h4 id="hono-helm-chart">Hono Helm Chart</h4> |
| |
| <p>The Helm chart is contained in the Hono archive that is available from <a href="https://www.eclipse.org/hono/downloads/ |
| ">Hono’s download page</a>. |
| After the archive has been extracted, the chart can be found in the <code>eclipse-hono-$VERSION/eclipse-hono</code> folder.</p> |
| |
| <h4 id="hono-command-line-client">Hono Command Line Client</h4> |
| |
| <p>The Hono command line client is available from the <a href="https://www.eclipse.org/hono/downloads/ |
| ">download page</a>. |
| The command line client requires a Java 11 runtime environment to run.</p> |
| |
| <h2 id="deploying-hono">Deploying Hono</h2> |
| |
| <p>The recommended way of deploying Hono is by means of using Helm’s <em>Tiller</em> service running on the Kubernetes cluster:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| helm install --dep-up --name hono --namespace hono eclipse-hono/ |
| </code></pre> |
| |
| <p>This will create namespace <code>hono</code> in the cluster and install all the components to that namespace. The name of the Helm release will be <code>hono</code>.</p> |
| |
| <p>The status of the deployment can be checked using any of the following commands:</p> |
| |
| <pre><code class="language-sh">helm list |
| helm status hono |
| helm get hono |
| </code></pre> |
| |
| <h3 id="deploying-hono-using-kubectl">Deploying Hono using kubectl</h3> |
| |
| <p>In cases where installation of Helm’s Tiller service into the cluster is not an option, the Kubernetes resource descriptors created by Helm can be deployed manually using the <code>kubectl</code> command line tool.</p> |
| |
| <p>The following commands generate the resource descriptors:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| mkdir resources |
| helm dep update eclipse-hono/ |
| helm template --name hono --namespace hono --output-dir resources eclipse-hono/ |
| </code></pre> |
| |
| <p>This will create a <code>resources/eclipse-hono</code> folder containing all the resource descriptors which can then be deployed to the cluster using <code>kubectl</code>:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| kubectl create namespace hono |
| kubectl config set-context $(kubectl config current-context) --namespace=hono |
| kubectl apply -f ./resources -R |
| </code></pre> |
| |
| <h2 id="verifying-the-installation">Verifying the Installation</h2> |
| |
| <p>Once deployment has completed, Hono’s external API endpoints are exposed via corresponding Kubernetes <em>Services</em>. |
| The following command lists all services and their endpoints (replace <code>hono</code> with the namespace that you have deployed to):</p> |
| |
| <pre><code class="language-sh">kubectl get service -n hono |
| |
| NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) |
| hono-adapter-amqp-vertx LoadBalancer 10.109.123.153 10.109.123.153 5672:32672/TCP,5671:32671/TCP |
| hono-adapter-amqp-vertx-headless ClusterIP None <none> <none> |
| hono-adapter-http-vertx LoadBalancer 10.99.180.137 10.99.180.137 8080:30080/TCP,8443:30443/TCP |
| hono-adapter-http-vertx-headless ClusterIP None <none> <none> |
| hono-adapter-mqtt-vertx LoadBalancer 10.102.204.69 10.102.204.69 1883:31883/TCP,8883:30883/TCP |
| hono-adapter-mqtt-vertx-headless ClusterIP None <none> <none> |
| hono-artemis ClusterIP 10.97.31.154 <none> 5671/TCP |
| hono-dispatch-router ClusterIP 10.98.111.236 <none> 5673/TCP |
| hono-dispatch-router-ext LoadBalancer 10.109.220.100 10.109.220.100 15671:30671/TCP,15672:30672/TCP |
| hono-grafana ClusterIP 10.110.61.181 <none> 3000/TCP |
| hono-prometheus-server ClusterIP 10.96.70.135 <none> 9090/TCP |
| hono-service-auth ClusterIP 10.109.97.44 <none> 5671/TCP |
| hono-service-auth-headless ClusterIP None <none> <none> |
| hono-service-device-registry ClusterIP 10.105.190.233 <none> 5671/TCP |
| hono-service-device-registry-ext LoadBalancer 10.101.42.99 10.101.42.99 28080:31080/TCP,28443:31443/TCP |
| hono-service-device-registry-headless ClusterIP None <none> <none> |
| </code></pre> |
| |
| <p>The listing above has been retrieved from a Minikube cluster that emulates a load balancer via the <code>minikube tunnel</code> command (refer to the <a href="https://github.com/kubernetes/minikube/blob/master/docs/networking.md#loadbalancer-emulation-minikube-tunnel">Minikube Networking docs</a> for details). |
| The service endpoints can be accessed at the <em>EXTERNAL-IP</em> addresses and corresponding <em>PORT(S)</em>, e.g. 8080 for the HTTP adapter (<em>hono-adapter-http-vertx</em>) and 28080 for the device registry (<em>hono-service-device-registry</em>).</p> |
| |
| <p>The following command assigns the IP address of the device registry service to the <code>REGISTRY_IP</code> environment variable so that they can easily be used from the command line:</p> |
| |
| <pre><code class="language-sh">export REGISTRY_IP=$(kubectl get service hono-service-device-registry-ext --output='jsonpath={.status.loadBalancer.ingress[0].ip}' -n hono) |
| </code></pre> |
| |
| <p>The following command can then be used to check for the existence of the <em>DEFAULT_TENANT</em> which is created as part of the installation:</p> |
| |
| <pre><code class="language-sh">curl -sIX GET http://$REGISTRY_IP:28080/v1/tenants/DEFAULT_TENANT |
| |
| HTTP/1.1 200 OK |
| etag: 89d40d26-5956-4cc6-b978-b15fda5d1823 |
| content-type: application/json; charset=utf-8 |
| content-length: 260 |
| </code></pre> |
| |
| <p><a name="dashboard"></a></p> |
| |
| <h2 id="accessing-the-grafana-dashboard">Accessing the Grafana Dashboard</h2> |
| |
| <p>Hono comes with an example Grafana dashboard which provides some insight into the messages flowing through the protocol adapters. |
| The following command needs to be run first in order to forward the Grafana service’s endpoint to the local host:</p> |
| |
| <pre><code class="language-sh">kubectl port-forward service/hono-grafana 3000 -n hono |
| </code></pre> |
| |
| <p>Then the dashboard can be opened by pointing a browser to <a href="http://localhost:3000">http://localhost:3000</a> using credentials <code>admin:admin</code>.</p> |
| |
| <h2 id="undeploying-hono">Undeploying Hono</h2> |
| |
| <p>A Hono instance that has been deployed using Helm’s Tiller service can be undeployed by running</p> |
| |
| <pre><code class="language-sh">helm delete --purge hono |
| </code></pre> |
| |
| <p>A Hono instance that has been deployed manually using the resource files can be undeployed by running</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| kubectl delete -f ./resources -R |
| </code></pre> |
| |
| <h2 id="using-the-device-connection-service">Using the Device Connection Service</h2> |
| |
| <p>Hono’s example Device Registry component contains a simple in-memory implementation of the <a href="/hono/docs/dev/api/device-connection/">Device Connection API</a>. |
| This example implementation is used by default when the example registry is deployed.</p> |
| |
| <p>Hono also contains a production ready, data grid based implementation of the Device Connection API which can be deployed and used instead of |
| the example implementation. The component can be deployed by means of setting the <em>deviceConnectionService.enabled</em> property to <code>true</code> when |
| running Helm:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| helm install --dep-up --name hono --namespace hono --set deviceConnectionService.enabled=true eclipse-hono/ |
| </code></pre> |
| |
| <p>This will deploy the Device Connection service and configure all protocol adapters to use it instead of the example Device Registry implementation. |
| However, the service requires a connection to a data grid in order to store the device connection data. |
| The Helm chart supports deployment of a simple data grid which can be used for experimenting by means of setting the |
| <em>dataGridDeployExample</em> property to <code>true</code> when running Helm:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| helm install --dep-up --name hono --namespace hono --set deviceConnectionService.enabled=true --set dataGridDeployExample=true eclipse-hono/ |
| </code></pre> |
| |
| <p>This will deploy the data grid and configure the Device Connection service to use it for storing the connection data.</p> |
| |
| <p>The Device Connection service can also be configured to connect to an already existing data grid. Please refer to the |
| <a href="/hono/docs/dev/admin-guide/device-connection-config/">admin guide</a> for details regarding the corresponding configuration properties.</p> |
| |
| <h2 id="deploying-optional-adapters">Deploying optional Adapters</h2> |
| |
| <p>The Helm chart supports deployment of additional protocol adapters which are still considered experimental or have been deprecated. |
| The following table provides an overview of the corresponding configuration properties that need to be set on deployment.</p> |
| |
| <table> |
| <thead> |
| <tr> |
| <th align="left">Property</th> |
| <th align="left">Default</th> |
| <th align="left">Description</th> |
| </tr> |
| </thead> |
| |
| <tbody> |
| <tr> |
| <td align="left"><em>adapters.lora.enabled</em></td> |
| <td align="left"><code>false</code></td> |
| <td align="left">Indicates if the (experimental) LoRa WAN protocol adapter should be deployed.</td> |
| </tr> |
| |
| <tr> |
| <td align="left"><em>adapters.kura.enabled</em></td> |
| <td align="left"><code>false</code></td> |
| <td align="left">Indicates if the deprecated Kura protocol adapter should be deployed.</td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <p>The following command will deploy the LoRa adapter along with Hono’s standard adapters:</p> |
| |
| <pre><code class="language-sh"># in directory: eclipse-hono-$VERSION |
| helm install --dep-up --name hono --namespace hono --set adapters.lora.enabled=true eclipse-hono/ |
| </code></pre> |
| |
| <h2 id="deploying-custom-container-images">Deploying custom Container Images</h2> |
| |
| <p>The sections above describe how Hono’s pre-built container images can be deployed using Helm. In some cases it might be desirable to build Hono from source, e.g. in order to use a different metrics back end or to <a href="#using-jaeger-tracing">use Jaeger tracing</a>. In these cases, the Helm templates contained in the source tree can be used instead of the Helm chart from the download page.</p> |
| |
| <p>The container images created as part of the build process need to be made available to the Kubernetes cluster that Hono should be deployed to. This usually requires the images to be pushed to a (private) container registry that the cluster has pull access to. Please refer to the documentation of the employed Kubernetes service provider for details regarding the setup and configuration of a private container registry.</p> |
| |
| <h3 id="deploying-via-a-private-registry">Deploying via a private Registry</h3> |
| |
| <p>The first step is getting the source code of Hono. Please refer to <a href="/hono/docs/dev/dev-guide/building_hono/">Building from Source</a> for details. |
| Once the source code has been retrieved, the build process can be started using the following command:</p> |
| |
| <pre><code class="language-sh"># in base directory of Hono working tree: |
| mvn clean install -Pbuild-docker-image,metrics-prometheus |
| </code></pre> |
| |
| <p>After the build process has finished, the custom container images need to be pushed to the registry so that the Kubernetes cluster can pull them from there during deployment. |
| Assuming that the images should be tagged with <code>1.0-CUSTOM</code> and the container registry name is <code>my.registry.io</code>, the following command can be used to tag the locally built images and push them to the registry:</p> |
| |
| <pre><code class="language-sh"># in base directory of Hono working tree: |
| ./push_hono_images.sh 1.0-CUSTOM my.registry.io |
| </code></pre> |
| |
| <div class="alert alert-notice"> |
| <h4 class="alert-heading"><i class="fas fa-info-circle"></i> Note</h4> |
| <div>You may need to log in to the (private) container registry before pushing the images.</div> |
| </div> |
| |
| |
| <p>Once the images have been pushed, the deployment can be done using Helm:</p> |
| |
| <pre><code class="language-sh"># in Hono working tree directory: hono/deploy |
| helm install --dep-up --name hono --namespace hono --set deviceRegistry.imageName=my.registry.io/eclipse/hono-service-device-registry:1.0-CUSTOM,authServer.imageName=my.registry.io/eclipse/hono-service-auth:1.0-CUSTOM,deviceConnectionService.imageName=my.registry.io/eclipse/hono-service-device-connection:1.0-CUSTOM,adapters.amqp.imageName=my.registry.io/eclipse/hono-adapter-amqp-vertx:1.0-CUSTOM,adapters.mqtt.imageName=my.registry.io/eclipse/hono-adapter-mqtt-vertx:1.0-CUSTOM,adapters.http.imageName=my.registry.io/eclipse/hono-adapter-http-vertx:1.0-CUSTOM target/deploy/helm/eclipse-hono/ |
| </code></pre> |
| |
| <h3 id="deploying-to-minikube">Deploying to Minikube</h3> |
| |
| <p>When using Minikube as the deployment target, things are a little easier. Minikube comes with an embedded Docker daemon which can be used to build the container images instead of using a local Docker daemon, thus eliminating the need to push the images to a registry altogether. |
| In order to use Minikube’s Docker daemon, the following command needs to be run:</p> |
| |
| <pre><code class="language-sh">eval $(minikube docker-env) |
| </code></pre> |
| |
| <p>This will set the Docker environment variables to point to Minikube’s Docker daemon which can then be used for building the container images and storing them locally in the Minikube VM.</p> |
| |
| <p>In any case the build process can be started using the following command:</p> |
| |
| <pre><code class="language-sh"># in base directory of Hono working tree: |
| mvn clean install -Pbuild-docker-image,metrics-prometheus |
| </code></pre> |
| |
| <p>The newly built images can then be deployed using Helm:</p> |
| |
| <pre><code class="language-sh"># in Hono working tree directory: hono/deploy |
| helm install --dep-up --name hono --namespace hono target/deploy/helm/eclipse-hono/ |
| </code></pre> |
| |
| <h3 id="using-jaeger-tracing">Using Jaeger Tracing</h3> |
| |
| <p>Hono’s components are instrumented using OpenTracing to allow tracking of the distributed processing of messages flowing through the system. |
| The Hono chart can be configured to report tracing information to the <a href="https://jaegertracing.io">Jaeger tracing system</a>. The <em>Spans</em> reported |
| by the components can then be viewed in a web browser.</p> |
| |
| <p>In order for Hono’s components to use the Jaeger client for reporting tracing information, the container images need to be built |
| with the <code>jaeger</code> Maven profile. Please refer to <a href="/hono/docs/dev/admin-guide/monitoring-tracing-config/#configuring-usage-of-jaeger-tracing-included-in-docker-images">Monitoring & Tracing</a> for details. |
| The newly built images also need to be made available to the target Kubernetes cluster as described in the two previous sections.</p> |
| |
| <p>The chart can be configured to deploy and use an example Jaeger back end by means of setting the <em>jaegerBackendDeployExample</em> property |
| to <code>true</code> when running Helm:</p> |
| |
| <pre><code class="language-sh"># in Hono working tree directory: hono/deploy |
| helm install --dep-up --name hono --namespace hono --set jaegerBackendDeployExample=true target/deploy/helm/eclipse-hono/ |
| </code></pre> |
| |
| <p>This will create a Jaeger back end instance suitable for testing purposes and will configure all deployed Hono components to use the |
| Jaeger back end.</p> |
| |
| <p>The following command can then be used to return the IP address with which the Jaeger UI can be accessed in a browser (ensure <code>minikube tunnel</code> is running when using minikube):</p> |
| |
| <pre><code class="language-sh">kubectl get service hono-jaeger-query --output='jsonpath={.status.loadBalancer.ingress[0].ip}' -n hono |
| </code></pre> |
| |
| <p>If no example Jaeger back end should be deployed but instead an existing Jaeger installation should be used, |
| the chart’s <em>jaegerAgentConf</em> property can be set to environment variables which are passed in to |
| the Jaeger Agent that is deployed with each of Hono’s components.</p> |
| |
| <pre><code class="language-sh"># in Hono working tree directory: hono/deploy |
| helm install --dep-up --name hono --namespace hono --set jaegerAgentConf.REPORTER_TYPE=tchannel --set jaegerAgentConf.REPORTER_TCHANNEL_HOST_PORT=my-jaeger-collector:14267 target/deploy/helm/eclipse-hono/ |
| </code></pre> |
| |
| <footer class=" footline" > |
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| </footer> |
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| </div> |
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| </div> |
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