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Questions tagged [eclipse-hono]

Eclipse Hono™ provides remote service interfaces for connecting large numbers of IoT devices to a back end and interacting with them in a uniform way regardless of the device communication protocol.

Hono specifically supports scalable and secure ingestion of large volumes of sensor data by means of its Telemetry and Event APIs. Hono's Command & Control API allows for sending commands (request messages) to devices and receive a reply to such a command from a device in an asynchronous way.

Finally, Hono provides APIs for integration with existing device and credentials management systems.

For more information about Eclipse Hono visit the official documentation: https://www.eclipse.org/hono/

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Protocoll adapter start fails with `OpenSSL is not available`

The MQTT protocol adapter does not start and in its log I see the message io.vertx.core.VertxException: OpenSSL is not available. What does this mean and what could be the cause? 11:10:18.131 [main] ERROR…
b-abel
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To get all the registered Devices in Eclipse Hono Tenant

Is there a way to get list of all the Tenants names/id in a Hono server. Is there a way to get list of all Devices registered in a particular tenant.
JustAnotherDataEnthusiast
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MQTT Protocol Adapter fails to start

The MQTT Protocol Adapter fails to start with the warning message MemoryBasedConnectionLimitStrategy - Not enough memory in the log files. What does it explain?
kaniyan
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No more devices are able to connect to the MQTT Adapter

No more devices are able to connect to the MQTT Adapter. The Adapter log contains the message DefaultConnectionLimitManager - Connection limit (1) exceeded. What does it mean? [vert.x-eventloop-thread-1] DEBUG o.e.h.s.l.DefaultConnectionLimitManager…
kaniyan
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How to get historical sensor data of a registered Hono Device

I am trying to send the below sensor values from the registered device in Hono to Ditto in order to form the digital twin of the registered device. I am using the below command. curl -X POST -i -u sensor10@tenantAllAdapters:mylittlesecret -H…
JustAnotherDataEnthusiast
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Connecting Eclipse Hono to Ditto - "description":"Check if all required JSON fields were set."},"status":400}" Error

I was successfully able to connect Hono to Ditto using AMQP adapters and I got the following messages in the log. The value sent from the demo device registered in Hono is successfully received and updated in the Ditto…
JustAnotherDataEnthusiast
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Connecting Eclipse Hono and Ditto

I have eclipse-hono installed in one machine and Eclipse ditto installed in the other which is connected to same WIFI. I am trying to consume data from Eclipse hono to Eclipse ditto. I have created a tenant named tenantallAdapters and registered a…
JustAnotherDataEnthusiast
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Eclipse Hono MQTT adapter: MQTT topic mapping

How does events from arbitrary mqtt topics such as "base/context/qualifier/subtopic" fold into Hono MQTT adapter topic structure? Do you simply publish your event to topic: "event" and use the message body to set the context from the original topic?
deemunk
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Hono connection in eclipse ditto

I have created a hono connection for ditto using the POST method in postman. The connection is getting created but the connection is showing misconfigured in ditto. I have given below the connection json that I used to create. { "name":…
curious_bait
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Device does not wait for a response even specifying the hono-ttd - ECLIPSE HONO

I am using Eclipse Hono and I am experiencing an issue with hono-ttd, that is, when I launch the HTTP POST command from the device to send telemetry data by specifying e.g. hono-ttd=60, the device does not wait to receive a command instead it…
Antonio Landolfi
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Trouble connecting to AMQP adapter in OpenShift

I'm trying to create an MQTT Protocol Gateway for our Hono Cluster running in OpenShift using this template but I am having trouble connecting to the AMQP adapter. I can connect to the Sandbox AMQP adapter using the CLI (version 2.1.0) but when I…
Wolfgang Jagomir
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How to change the eclipse hono's database with postgresql

I am new to Eclipse Hono. I have installed eclipse hono, using Helm chart and kubernetes(https://www.eclipse.org/hono/docs/getting-started), it is up and running and I am sending the messages from MQTT with AMQP Network. Here are my some doubts and…
nenavath krishna
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Connecting Eclipse Ditto and Eclipse Hono

I am trying to do the steps stated in https://www.eclipse.org/ditto/2018-05-02-connecting-ditto-hono.html#create-a-connection-to-hono to connect Ditto and Hono. I have tested Ditto and Hono with the steps explained "Hello World" for Ditto and…
009
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Why does a local hono build fail with "Unable to pull 'index.docker.io/eclipse/hono-service-auth-quarkus:2.0.0-SNAPSHOT'"

Environment: Maven home: /usr/share/apache-maven-3.8.2 Java version: 17.0.2, vendor: Private Build, runtime: /usr/lib/jvm/java-17-openjdk-amd64 Default locale: de_DE, platform encoding: UTF-8 OS name: "linux", version: "4.15.0-173-generic", arch:…
Achim Kraus
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Hono CLI start issue

I recently deployed hono using Minikube. I followed the instructions, tunneled the cluster so it is available through localhost. I also successfully set up a tenant and I would like to test the MQTT Adapter with Mosquitto. I tried to start the CLI…
Oliver Nagy
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