# Mosquitto MQTT Broker **URL:** https://forum.cedalo.com/c/eclipse-mosquitto/17.md [Latest](https://forum.cedalo.com/latest.md) · [Categories](https://forum.cedalo.com/categories.md) --- ## [About the Eclipse Mosquitto category](https://forum.cedalo.com/t/about-the-eclipse-mosquitto-category/179)
**Author:** [@January](https://forum.cedalo.com/u/January)\ **Replies:** 0
Get information on the best ways to use Eclipse Mosquitto. Here, you will get access to community Q&A, ask questions, and receive feedback. --- ## [Prevent "Client null sending PINGREQ PINGRESP" messages](https://forum.cedalo.com/t/prevent-client-null-sending-pingreq-pingresp-messages/1269)
**Author:** [@milliways](https://forum.cedalo.com/u/milliways)\ **Replies:** 0\ **Last updated:** [September 20, 2026, 6:32am UTC](https://forum.cedalo.com/t/prevent-client-null-sending-pingreq-pingresp-messages/1269 "2026-09-20T06:32:32Z")
I last used Mosquitto on a Raspberry Pi running Stretch. I am attempting to implement on the latest Raspberry Pi OS using the mosquitto\_sub/pub command. This works but I keep getting lots spurious output. I tried --qu… --- ## [Ecowitt2Mqtt on Mosquitto and Docker](https://forum.cedalo.com/t/ecowitt2mqtt-on-mosquitto-and-docker/1245)
**Author:** [@RonR](https://forum.cedalo.com/u/RonR)\ **Replies:** 9\ **Last updated:** [August 14, 2026, 7:53pm UTC](https://forum.cedalo.com/t/ecowitt2mqtt-on-mosquitto-and-docker/1245 "2026-08-14T19:53:40Z")
I am trying to get Ecowitt@MQTT running on my Docker Mosquitto container. I have gotten as far as receiving a message from the Ecowitt gateway, GW3000, however when the message is passed on to Mosquitto I receive error … --- ## [New to Mosquitto](https://forum.cedalo.com/t/new-to-mosquitto/1242)
**Author:** [@ericg2026](https://forum.cedalo.com/u/ericg2026)\ **Replies:** 4\ **Last updated:** [April 22, 2026, 2:44pm UTC](https://forum.cedalo.com/t/new-to-mosquitto/1242 "2026-04-22T14:44:51Z")
Hello- Setting up Mosquitto on raspberrypi 5 for localhost only. Getting “connection refused” and “permission denied” errors. Please advise where would be the right place for me to seek assistance. Thank you- --- ## [Mosquitto 2.0.20 IPv6 Support](https://forum.cedalo.com/t/mosquitto-2-0-20-ipv6-support/1240)
**Author:** [@Vinal](https://forum.cedalo.com/u/Vinal)\ **Replies:** 1\ **Last updated:** [April 13, 2026, 8:49am UTC](https://forum.cedalo.com/t/mosquitto-2-0-20-ipv6-support/1240 "2026-04-13T08:49:41Z")
Hi everyone, I’m currently using Mosquitto version 2.0.20 and had a question regarding IPv6 support. If I forward internet traffic over IPv6, will my existing Mosquitto configuration continue to work as expected, or ar… --- ## [Cellular downlink delay causing issues](https://forum.cedalo.com/t/cellular-downlink-delay-causing-issues/1239)
**Author:** [@Jeremy](https://forum.cedalo.com/u/Jeremy)\ **Replies:** 0\ **Last updated:** [March 26, 2026, 6:12pm UTC](https://forum.cedalo.com/t/cellular-downlink-delay-causing-issues/1239 "2026-03-26T18:12:13Z")
Hi, I have been developing a product to do point to multipoint I/O Telemetry over cellular infastructure via MQTT. My Cellular provider (Telus) appears to be halting the downlink side of the connection if the socket is … --- ## [Mosquitto MQTT broker](https://forum.cedalo.com/t/mosquitto-mqtt-broker/1237)
**Author:** [@Amrit](https://forum.cedalo.com/u/Amrit)\ **Replies:** 0\ **Last updated:** [March 19, 2026, 10:46am UTC](https://forum.cedalo.com/t/mosquitto-mqtt-broker/1237 "2026-03-19T10:46:02Z")
Hello sir, We are using mosquitto MQTT broker version 3.1.1 & deployed on Linux ubuntu machines. We observed mosquitto auto restart with below error in syslog. kernel: \[11920710.948355\] traps: mosquitto\[18931\] general… --- ## [How to connect Mosquitto in Windows11?](https://forum.cedalo.com/t/how-to-connect-mosquitto-in-windows11/1231)
**Author:** [@edgar586](https://forum.cedalo.com/u/edgar586)\ **Replies:** 1\ **Last updated:** [March 12, 2026, 6:14pm UTC](https://forum.cedalo.com/t/how-to-connect-mosquitto-in-windows11/1231 "2026-03-12T18:14:23Z")
This is crazy… can mosquitto work in Windows 11? I had it working without any user name and password to test Node Red, but then I added user name and password, and suddenly the service stopped working in Task Manager f… --- ## [How to connect Cedalo MQTT Platform to OS Broker with TLS pre-shared key only?](https://forum.cedalo.com/t/how-to-connect-cedalo-mqtt-platform-to-os-broker-with-tls-pre-shared-key-only/1224)
**Author:** [@cowgoesmoo69](https://forum.cedalo.com/u/cowgoesmoo69)\ **Replies:** 1\ **Last updated:** [February 11, 2026, 8:57am UTC](https://forum.cedalo.com/t/how-to-connect-cedalo-mqtt-platform-to-os-broker-with-tls-pre-shared-key-only/1224 "2026-02-11T08:57:51Z")
Hello, I’m trying to connect the Cedalo MQTT Platform to my open source broker that is running on a VPS. When filling in the connection details it appears I have to supply certificates to use TLS. This is not how I hav… --- ## [Partial successful connection to Mosquitto](https://forum.cedalo.com/t/partial-successful-connection-to-mosquitto/1210)
**Author:** [@ric-m](https://forum.cedalo.com/u/ric-m)\ **Replies:** 5\ **Last updated:** [January 20, 2026, 9:56pm UTC](https://forum.cedalo.com/t/partial-successful-connection-to-mosquitto/1210 "2026-01-20T21:56:52Z")
I have been using mosquitto /mqttx/mqtt-explorer for years without issue on several RaspberryPi 5’s (RPi). A device failed and the backups, so I am creating a fresh install using docker and Latest RPi OS (Bookworm). All… --- ## [Mosquitto & big payloads](https://forum.cedalo.com/t/mosquitto-big-payloads/1221)
**Author:** [@Robert](https://forum.cedalo.com/u/Robert)\ **Replies:** 0\ **Last updated:** [January 20, 2026, 12:28pm UTC](https://forum.cedalo.com/t/mosquitto-big-payloads/1221 "2026-01-20T12:28:00Z")
Hello Everybody In my project I need to transfer over MQTT big files (bigger than MAX\_MQTT\_PAYLOAD). Because of that I split the file to chunks of the size smaller than MAX\_MQTT\_PAYLOAD and send them over the MQTT and m… --- ## [Upgraded mosquitto to 2.0.22 Now can't Start Service (W11 Pro)](https://forum.cedalo.com/t/upgraded-mosquitto-to-2-0-22-now-cant-start-service-w11-pro/1219)
**Author:** [@SoggyGeek](https://forum.cedalo.com/u/SoggyGeek)\ **Replies:** 4\ **Last updated:** [January 20, 2026, 3:38am UTC](https://forum.cedalo.com/t/upgraded-mosquitto-to-2-0-22-now-cant-start-service-w11-pro/1219 "2026-01-20T03:38:03Z")
Hi I have been happily running mosquitto as a service for a couple of years on my Windows 11 computer. The version I was running was 2.0.18. I recently upgraded, using this exe downloaded from mosquitto.org: mosquitto… --- ## [How to save on a file the output of mosquitto\_sub?](https://forum.cedalo.com/t/how-to-save-on-a-file-the-output-of-mosquitto-sub/1212)
**Author:** [@Mbongoo](https://forum.cedalo.com/u/Mbongoo)\ **Replies:** 1\ **Last updated:** [December 17, 2025, 8:26am UTC](https://forum.cedalo.com/t/how-to-save-on-a-file-the-output-of-mosquitto-sub/1212 "2025-12-17T08:26:13Z")
Instead of printing it, how to save on a file the output of mosquitto\_sub ? --- ## [We are using mosquito 1.4.11 in our gateway & in backend broker 1.4.90. but we upgraded our backend mosquito to 1.6.9, we are observing multiple disconnection between gateway & backend broker even proper internet available in gateway](https://forum.cedalo.com/t/we-are-using-mosquito-1-4-11-in-our-gateway-in-backend-broker-1-4-90-but-we-upgraded-our-backend-mosquito-to-1-6-9-we-are-observing-multiple-disconnection-between-gateway-backend-broker-even-proper-internet-available-in-gateway/1208)
**Author:** [@Amrit](https://forum.cedalo.com/u/Amrit)\ **Replies:** 6\ **Last updated:** [December 5, 2025, 11:32am UTC](https://forum.cedalo.com/t/we-are-using-mosquito-1-4-11-in-our-gateway-in-backend-broker-1-4-90-but-we-upgraded-our-backend-mosquito-to-1-6-9-we-are-observing-multiple-disconnection-between-gateway-backend-broker-even-proper-internet-available-in-gateway/1208 "2025-12-05T11:32:20Z")
Hi dear, I am using mosquito 1.4.11 in our linux gateway & in backend broker 1.4.90. but when we upgraded our backend mosquito to 1.6.9 or higher version, we are observing multiple longer disconnection between gateway & … --- ## [Whether or not support cluster in the Open-source Mosquitto?](https://forum.cedalo.com/t/whether-or-not-support-cluster-in-the-open-source-mosquitto/1207)
**Author:** [@anlex\_N](https://forum.cedalo.com/u/anlex_N)\ **Replies:** 1\ **Last updated:** [November 4, 2025, 11:24am UTC](https://forum.cedalo.com/t/whether-or-not-support-cluster-in-the-open-source-mosquitto/1207 "2025-11-04T11:24:08Z")
I have reviewed this github issue, but today is 2025-11-01, this issue is not updated. --- ## [What is host name](https://forum.cedalo.com/t/what-is-host-name/1206)
**Author:** [@karl251018](https://forum.cedalo.com/u/karl251018)\ **Replies:** 1\ **Last updated:** [October 21, 2025, 7:36am UTC](https://forum.cedalo.com/t/what-is-host-name/1206 "2025-10-21T07:36:57Z")
I installed Mosquitto on windows 11 but cannot find a way to see the host name. Mosquitto is running as a windows service and the test.eclipse.org connection in the MQTT Connection software shows a lot of activity. Howev… --- ## [ACL: How to secure only one topic?](https://forum.cedalo.com/t/acl-how-to-secure-only-one-topic/1195)
**Author:** [@dakes](https://forum.cedalo.com/u/dakes)\ **Replies:** 1\ **Last updated:** [September 24, 2025, 7:15am UTC](https://forum.cedalo.com/t/acl-how-to-secure-only-one-topic/1195 "2025-09-24T07:15:00Z")
Hi, So far I am not using any ACLs, but since I am getting a smart lock I want to secure the topic so that only one user can write to it. After reading the documentation I am a bit confused though. Is it correct that i… --- ## [Debian package failure](https://forum.cedalo.com/t/debian-package-failure/1194)
**Author:** [@seasoned\_geek](https://forum.cedalo.com/u/seasoned_geek)\ **Replies:** 1\ **Last updated:** [September 9, 2025, 8:35am UTC](https://forum.cedalo.com/t/debian-package-failure/1194 "2025-09-09T08:35:17Z")
All, I have searched quite a few places, even the official Mosquitto GitHub and I do not see the scripts/files for building Debian packages. Someone tried to fix the install error with a hack to mosquitto.service and it… --- ## [Mosquitto for Debian Buster](https://forum.cedalo.com/t/mosquitto-for-debian-buster/1182)
**Author:** [@Gesmonca](https://forum.cedalo.com/u/Gesmonca)\ **Replies:** 0\ **Last updated:** [July 23, 2025, 9:17am UTC](https://forum.cedalo.com/t/mosquitto-for-debian-buster/1182 "2025-07-23T09:17:52Z")
Hello! I’ve seen to be having problems upgrading the mosquitto that comes on a default Raspbian Buster OS image we have been using for a couple of years Because we are currently needing to use Chirpstack V4 and the mos… --- ## [Trying to install on RP5](https://forum.cedalo.com/t/trying-to-install-on-rp5/1175)
**Author:** [@ThisGuy](https://forum.cedalo.com/u/ThisGuy)\ **Replies:** 0\ **Last updated:** [July 1, 2025, 4:49pm UTC](https://forum.cedalo.com/t/trying-to-install-on-rp5/1175 "2025-07-01T16:49:43Z")
Fresh first time install. When i run the following: sudo nano /etc/mosquitto/mosquitto.conf It opens a blank page. Did i miss a step in the install? --- ## [Bridge config with two addresses does not work like expected](https://forum.cedalo.com/t/bridge-config-with-two-addresses-does-not-work-like-expected/1171)
**Author:** [@erikfdev](https://forum.cedalo.com/u/erikfdev)\ **Replies:** 0\ **Last updated:** [June 13, 2025, 3:00pm UTC](https://forum.cedalo.com/t/bridge-config-with-two-addresses-does-not-work-like-expected/1171 "2025-06-13T15:00:37Z")
First of all, I have to confess that I have to work with rather old Mosquitto versions due to the fact that we still have to use RHEL 8 here. The mosquitto version is 1.6.15. Now for my problem. I have a mosquitto con… --- ## [Mosquitto bridging between 2 remotes brokers](https://forum.cedalo.com/t/mosquitto-bridging-between-2-remotes-brokers/1168)
**Author:** [@gamore](https://forum.cedalo.com/u/gamore)\ **Replies:** 1\ **Last updated:** [June 12, 2025, 8:02am UTC](https://forum.cedalo.com/t/mosquitto-bridging-between-2-remotes-brokers/1168 "2025-06-12T08:02:46Z")
Hi There to everyone, it’s nice to be here. i’m trying to forward data from a remote broker A to another remote broker B, using Mosquitto Bridge. My bridge.conf is: connection remote\_broker\_A\_in address remoteBrokerA:… --- ## [Mosquitto with TLS on Windows 11 'Client Hello' rejected](https://forum.cedalo.com/t/mosquitto-with-tls-on-windows-11-client-hello-rejected/1166)
**Author:** [@LesGrant](https://forum.cedalo.com/u/LesGrant)\ **Replies:** 3\ **Last updated:** [June 4, 2025, 5:47pm UTC](https://forum.cedalo.com/t/mosquitto-with-tls-on-windows-11-client-hello-rejected/1166 "2025-06-04T17:47:54Z")
I have successfully connected my device to Mosquitto without TLS but now I am adding TLS to my device. I connect via TCP but Mosquitto immediately closes the TCP connection after I send the ‘Client Hello’. I noticed the … --- ## [Mosquitto\_sub - Timestamp Format](https://forum.cedalo.com/t/mosquitto-sub-timestamp-format/1058)
**Author:** [@AlecIs](https://forum.cedalo.com/u/AlecIs)\ **Replies:** 1\ **Last updated:** [November 14, 2024, 10:57am UTC](https://forum.cedalo.com/t/mosquitto-sub-timestamp-format/1058 "2024-11-14T10:57:04Z")
Hi - I’m using OSS Mosquitto on Linux. I have mosquitto\_pub on a Raspberry Pi publishing sensor data to a broker, and then mosquitto\_sub on a Rocky Linux box to receive the data for further processing. For various reas… --- ## [Pro Mosquitto 2.7 is now available!](https://forum.cedalo.com/t/pro-mosquitto-2-7-is-now-available/900)
**Author:** [@January](https://forum.cedalo.com/u/January)\ **Replies:** 0\ **Last updated:** [November 7, 2023, 12:06pm UTC](https://forum.cedalo.com/t/pro-mosquitto-2-7-is-now-available/900 "2023-11-07T12:06:03Z")
{Product Update} We are excited to announce the release of Pro Mosquitto 2.7. This release focuses on new integrations such as the MongoDB and Kafka bridges, Kubernetes deployment support, security enhancements with the … --- ## [Threaded build of mosquitto library for Windows?](https://forum.cedalo.com/t/threaded-build-of-mosquitto-library-for-windows/899)
**Author:** [@npcostes](https://forum.cedalo.com/u/npcostes)\ **Replies:** 0\ **Last updated:** [November 1, 2023, 5:42pm UTC](https://forum.cedalo.com/t/threaded-build-of-mosquitto-library-for-windows/899 "2023-11-01T17:42:36Z")
Hi all. I realize that the windows 2.0.15 installer has a version of the mosquitto client library that doesn’t have threading support, so we have to manually call loop(). The same version on Linux has threading working. … --- ## [Mosquitto basic config settings](https://forum.cedalo.com/t/mosquitto-basic-config-settings/843)
**Author:** [@Rob1](https://forum.cedalo.com/u/Rob1)\ **Replies:** 7\ **Last updated:** [October 16, 2023, 11:38am UTC](https://forum.cedalo.com/t/mosquitto-basic-config-settings/843 "2023-10-16T11:38:13Z")
Hello all, I am new to Mosquitto; I have used the HiveMQ MQTT broker successfully but need to set up Mosquitto MQTT broker for a specific test. I am trying to get multiple PCs and a PLC talking to my broker across a si… --- ## [Broker and subscriber in same process](https://forum.cedalo.com/t/broker-and-subscriber-in-same-process/848)
**Author:** [@aniljindalonline](https://forum.cedalo.com/u/aniljindalonline)\ **Replies:** 3\ **Last updated:** [October 6, 2023, 9:28am UTC](https://forum.cedalo.com/t/broker-and-subscriber-in-same-process/848 "2023-10-06T09:28:43Z")
We have a requirement where we wish to run broker and subscriber in same process. Sould we try to tweak broker source, create a shared libraray and link with subscriber process? Woult it work ? Any chances of conflict… --- ## [Update! Support for Open Source Mosquitto is now available!](https://forum.cedalo.com/t/update-support-for-open-source-mosquitto-is-now-available/718)
**Author:** [@January](https://forum.cedalo.com/u/January)\ **Replies:** 0\ **Last updated:** [January 17, 2023, 1:46pm UTC](https://forum.cedalo.com/t/update-support-for-open-source-mosquitto-is-now-available/718 "2023-01-17T13:46:28Z")
We are excited to announce the launch of our support service for open source Mosquitto. Get the support you need to take your Mosquitto projects to the next level. Learn more → Open Source Mosquitto Support | Cedalo --- ## [How to programmatically get License Status](https://forum.cedalo.com/t/how-to-programmatically-get-license-status/672)
**Author:** [@trenna](https://forum.cedalo.com/u/trenna)\ **Replies:** 2\ **Last updated:** [December 2, 2022, 10:40am UTC](https://forum.cedalo.com/t/how-to-programmatically-get-license-status/672 "2022-12-02T10:40:11Z")
Hello, Is there any way to get the License status programmatically? I would like to build an element manager that can display the license status / warn if the license is expired / nearing expiration. I see the license… [Next page](https://forum.cedalo.com/c/eclipse-mosquitto/17.md?page=1)