{"id":1771,"date":"2019-05-30T04:55:52","date_gmt":"2019-05-30T11:55:52","guid":{"rendered":"https:\/\/hometechhacker.com\/?p=1771"},"modified":"2021-12-07T07:02:01","modified_gmt":"2021-12-07T15:02:01","slug":"mqtt-using-docker-and-home-assistant","status":"publish","type":"post","link":"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/","title":{"rendered":"Starting with MQTT using Docker and Home Assistant"},"content":{"rendered":"<div class=\"ttr_start\"><\/div>\n<p>MQTT is a great protocol to have in your automation arsenal. This article explains how to quickly get started with MQTT using Docker and Home Assistant. <\/p>\n\n\n\n<p class=\"has-cyan-bluish-gray-background-color has-background\">Note: I now use the Eclipse MQTT container and have written an updated <a href=\"https:\/\/hometechhacker.com\/mqtt-home-assistant-using-docker-eclipse-mosquitto\/\">MQTT, Docker, and Home Assistant article<\/a>. I&#8217;m leaving this article as a reference.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"816\" height=\"679\" src=\"http:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/04\/MQTT-HA-Docker.png\" alt=\"MQTT, Home Assistant and Docker together\" class=\"wp-image-1804\" srcset=\"https:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/04\/MQTT-HA-Docker.png 816w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/04\/MQTT-HA-Docker-300x250.png 300w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/04\/MQTT-HA-Docker-768x639.png 768w\" sizes=\"(max-width: 816px) 100vw, 816px\" \/><figcaption>MQTT working with Clients, Docker, and Home Assistant<\/figcaption><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-662cbae9c30ab\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-662cbae9c30ab\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#What_is_MQTT_and_what_can_I_do_with_it\" title=\"What is MQTT and what can I do with it?\">What is MQTT and what can I do with it?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#What_is_Docker\" title=\"What is Docker?\">What is Docker?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#What_is_Home_Assistant\" title=\"What is Home Assistant?\">What is Home Assistant?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Setting_up_MQTT_in_Docker\" title=\"Setting up MQTT in Docker\">Setting up MQTT in Docker<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Set_up_persistent_data_and_base_configuration\" title=\"Set up persistent data and base configuration\">Set up persistent data and base configuration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Create_and_run_the_container\" title=\"Create and run the container\">Create and run the container<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Testing_MQTT\" title=\"Testing MQTT\">Testing MQTT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Adding_security\" title=\"Adding security\">Adding security<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Configuring_Home_Assistant_for_MQTT\" title=\"Configuring Home Assistant for MQTT\">Configuring Home Assistant for MQTT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#Final_thoughts\" title=\"Final thoughts\">Final thoughts<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"what-is-mqtt-and-what-can-i-do-with-it\"><span class=\"ez-toc-section\" id=\"What_is_MQTT_and_what_can_I_do_with_it\"><\/span>What is MQTT and what can I do with it?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>MQTT, which stands for Message Queuing Telemetry Transport, is often described as the protocol of the Internet of Things (IOT). It&#8217;s a lightweight publish\/subscribe system where clients can both publish and subscribe to messages. It works well for IOT devices because it is low-bandwidth.<\/p>\n\n\n\n<p>MQTT uses a broker to facilitate communication between subscribers and publishers. In the diagram above, Home Assistant subscribes to messages published by sensors and jobs. However, Home Assistant can also be a publisher and the clients can also be subscribers.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div style=\"margin-bottom: 10px; \" id=\"homet-169454796\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9093254913993997\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-client=\"ca-pub-9093254913993997\" \ndata-ad-slot=\"5481537837\" \ndata-ad-layout=\"in-article\"\ndata-ad-format=\"fluid\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div id=\"homet-1516406385\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9093254913993997\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-9093254913993997\" \ndata-ad-slot=\"1013639783\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><\/div>\n<\/div>\n\n\n\n<p>Common uses of MQTT include:<\/p>\n\n\n\n<ul><li>Sharing and reacting to sensor information like temperature, humidity, motion, and light levels<\/li><li>Integrating alarm panels that don&#8217;t normally talk to your smarthome hub<\/li><li>For relays to communicate with home automation controllers to open gates, garage doors, even to control irrigation, heating and cooling systems<\/li><li>As a substitute for devices that don&#8217;t have an API or a standard way to communicate with other devices in your ecosystem. You can build these devices for pennies on the dollar compared to their commercial counterparts<\/li><\/ul>\n\n\n\n<p>I am currently using MQTT to provide Home Assistant with the status of my home backups and some cron jobs. I also use MQTT to interface with a homebrew garage door controller, temperature\/humidity\/motion multisensor, and relays that control light switches.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-docker\"><span class=\"ez-toc-section\" id=\"What_is_Docker\"><\/span>What is Docker?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"http:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/11\/docker-theverge-1024x576.png\" alt=\"Docker Logo\" class=\"wp-image-1194\" srcset=\"https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/11\/docker-theverge-1024x576.png 1024w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/11\/docker-theverge-300x169.png 300w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/11\/docker-theverge-768x432.png 768w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/11\/docker-theverge.png 1400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Docker is a virtualization technology, similar to virtual machines. Instead of virtualizing an entire operating system, Docker allows you to virtualize an application into a container for maximum portability and flexibility. I previously wrote an <a href=\"http:\/\/hometechhacker.com\/my-first-docker-container\/\">article about Docker<\/a> so I won&#8217;t go into too much detail here.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-is-home-assistant\"><span class=\"ez-toc-section\" id=\"What_is_Home_Assistant\"><\/span>What is Home Assistant?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"http:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/08\/hass-social-1024x538.png\" alt=\"Home Assistant Social Logo\" class=\"wp-image-1002\" srcset=\"https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/08\/hass-social-1024x538.png 1024w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/08\/hass-social-300x158.png 300w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/08\/hass-social-768x403.png 768w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2018\/08\/hass-social.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Home Assistant is a software-based <a href=\"http:\/\/hometechhacker.com\/pick-smarthome-hub\/\">smarthome hub<\/a> with a focus on security and local control. It is the brain of my smarthome. <a href=\"http:\/\/hometechhacker.com\/category\/homeassistant\/\">I&#8217;ve written lots about it<\/a> if you want to learn more.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"setting-up-mqtt-in-docker\"><span class=\"ez-toc-section\" id=\"Setting_up_MQTT_in_Docker\"><\/span>Setting up MQTT in Docker<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Picking a broker is the first part of getting started with MQTT.  Home Assistant comes with an <a href=\"https:\/\/www.home-assistant.io\/docs\/mqtt\/broker#embedded-broker\">embedded broker<\/a>. Cloud-based brokers are popular as well. I went with Mosquitto because it&#8217;s popular and there&#8217;s a Docker image.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"set-up-persistent-data-and-base-configuration\"><span class=\"ez-toc-section\" id=\"Set_up_persistent_data_and_base_configuration\"><\/span>Set up persistent data and base configuration<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>I chose to go with the Toke Mosquitto container because I easily found good documentation. You should set up persistent data directories and the base configuration file (mosquitto.conf) before starting your container. I&#8217;m basing this tutorial on my Ubuntu 18.04 system, but this should work with most Linux systems:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;application\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">mkdir -p \/storage\/mosquitto\/config\nmkdir -p \/storage\/mosquitto\/data\nmkdir -p \/storage\/mosquitto\/log<\/pre><\/div>\n\n\n\n<p>Replace the directories with whatever is appropriate to you. You should copy a mosquitto.conf file into the &#8220;config&#8221; directory. My base mosquitto file: <\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;application\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\"># Place your local configuration in \/mqtt\/config\/conf.d\/\n\npid_file \/var\/run\/mosquitto.pid\n\npersistence true\npersistence_location \/mqtt\/data\/\n\nuser mosquitto\n\n# Port to use for the default listener.\nport 1883\n\n\nlog_dest file \/mqtt\/log\/mosquitto.log\nlog_dest stdout\n\ninclude_dir \/mqtt\/config\/conf.d<\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"create-and-run-the-container\"><span class=\"ez-toc-section\" id=\"Create_and_run_the_container\"><\/span>Create and run the container<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Now the easy part, the Docker run command:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;application\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">sudo docker run -itd \\\n--name=mqtt \\\n--restart=always \\\n--net=host \\\n-v \/storage\/mosquitto\/config:\/mqtt\/config:ro \\\n-v \/storage\/mosquitto\/data:\/mqtt\/data \\\n-v \/storage\/mosquitto\/log:\/mqtt\/log \\\ntoke\/mosquitto<\/pre><\/div>\n\n\n\n<p>This command tells the container to where to look for config, data, and log files. I&#8217;ve pointed these to the local directories I set up earlier. My Mosquitto MQTT broker should be up and running now.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"testing-mqtt\"><span class=\"ez-toc-section\" id=\"Testing_MQTT\"><\/span>Testing MQTT<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>To test, install the mosquitto client package:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;application\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">sudo apt install mosquitto-clients<\/pre><\/div>\n\n\n\n<p>This will get you access to publish and subscribe commands. First, start by opening a terminal and subscribing to a topic:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">mosquitto_sub -h &lt;brokerhost&gt; -t &quot;test&quot;<\/pre><\/div>\n\n\n\n<p>Replace &lt;brokerhost&gt; with the IP or hostname of your broker. This starts a subscription to any messages that are published with the topic &#8220;test.&#8221; <\/p>\n\n\n\n<p>In another terminal send a message to the topic test:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">mosquitto_pub -h &lt;brokerhost&gt; -t &quot;test&quot; -m &quot;Hello World&quot; <\/pre><\/div>\n\n\n\n<p>After entering this command, &#8220;Hello World&#8221; should show up in the terminal where you ran the mosquitto_sub command. If you see it, your broker is working!<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"adding-security\"><span class=\"ez-toc-section\" id=\"Adding_security\"><\/span>Adding security<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>As it is currently set up, any client can connect to your broker to publish and subscribe to any topic. You can add some security by requiring a username and password for clients to connect to the broker.<\/p>\n\n\n\n<p>First, you&#8217;ll need to create a password file. The best way is to connect to your container and run mosquitto_passwd. In order to connect to your container&#8217;s console you need to find out its ID:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">docker ps<\/pre><\/div>\n\n\n\n<p>This will give you a list of containers and their IDs. Using that ID you can then run:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">docker exec -it &lt;containerID&gt; bash<\/pre><\/div>\n\n\n\n<p>Replacing &lt;containerID&gt; with the container of your Mosquitto container will give you a command line. Alternatively, you can use <a href=\"http:\/\/hometechhacker.com\/portainer-docker-containers\/\">Portainer<\/a> to connect directly to the console.<\/p>\n\n\n\n<p>From the console run something similar to:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;application\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">mosquitto_passwd -c \/mqtt\/config\/credentials &lt;username&gt;<\/pre><\/div>\n\n\n\n<p>With appropriate filename and username arguments, this command will ask for a password and then create a hashed password file. Then you need to update your Mosquitto config. <\/p>\n\n\n\n<p>If you used a mosquitto.conf file similar to what I posted above you need to create a default.conf file in the conf.d subdirectory of your config directory with the following contents:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">allow_anonymous false\npassword_file \/mqtt\/config\/credentials<\/pre><\/div>\n\n\n\n<p>Remember to use the appropriate password_file path and filename. After restarting the container your publish and subscribe commands will need to have a username and password to work:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;shell&quot;,&quot;mime&quot;:&quot;text\/x-sh&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;Shell&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;shell&quot;}\">mosquitto_sub -h &lt;brokerhost&gt; -t &quot;test&quot; -u &quot;&lt;username&gt;&quot; -P &quot;&lt;password&gt;&quot;\nmosquitto_pub -h &lt;brokerhost&gt; -t &quot;test&quot; -m &quot;Hello World&quot; -u &quot;&lt;username&gt;&quot; -P &quot;&lt;password&gt;&quot;<\/pre><\/div>\n\n\n\n<p>You can make your broker more secure by using web sockets or TLS. Digital Ocean has a great <a href=\"https:\/\/www.digitalocean.com\/community\/tutorials\/how-to-install-and-secure-the-mosquitto-mqtt-messaging-broker-on-ubuntu-16-04\">tutorial<\/a>. <\/p>\n\n\n<div style=\"margin-bottom: 10px; \" id=\"homet-432594077\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-9093254913993997\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-client=\"ca-pub-9093254913993997\" \ndata-ad-slot=\"5481537837\" \ndata-ad-layout=\"in-article\"\ndata-ad-format=\"fluid\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"configuring-home-assistant-for-mqtt\"><span class=\"ez-toc-section\" id=\"Configuring_Home_Assistant_for_MQTT\"><\/span>Configuring Home Assistant for MQTT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>This is as simple as adding the following code to your configuration.yaml:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;yaml&quot;,&quot;mime&quot;:&quot;text\/yaml&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;YAML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;yaml&quot;}\">mqtt:\n  broker: &lt;brokerip&gt;\n  username: &lt;mqtt_username&gt;\n  password: &lt;mqtt_password&gt;<\/pre><\/div>\n\n\n\n<p>You don&#8217;t need the username and password if you did not configure your broker to use one. Then, you want to configure Home Assistant to subscribe to some topics. I decided to test this by subscribing to a topic that displays the time of my last Home Assistant backup:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:&quot;language&quot;,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;yaml&quot;,&quot;mime&quot;:&quot;text\/x-yaml&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;YAML&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;yaml&quot;}\"> sensor:\n  - platform: mqtt\n    name: &quot;Last HA config backup&quot;\n    state_topic: &quot;backup\/HA&quot;<\/pre><\/div>\n\n\n\n<p>I added a mosquitto_pub statement to my backup script. It simply sends the time of the last backup to the topic &#8220;backup\/HA.&#8221; Here is the sensor card in the UI that displays the message:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"345\" height=\"137\" src=\"http:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/05\/HABackup.png\" alt=\"Sensor card for MQTT\" class=\"wp-image-1818\" srcset=\"https:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/05\/HABackup.png 345w, https:\/\/hometechhacker.com\/wp-content\/uploads\/2019\/05\/HABackup-300x119.png 300w\" sizes=\"(max-width: 345px) 100vw, 345px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"final-thoughts\"><span class=\"ez-toc-section\" id=\"Final_thoughts\"><\/span>Final thoughts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>MQTT is cool, solid, and fast. It provides an easy way to pass information.  It also makes it easy to integrate inexpensive hardware. Running it in Docker and configuring Home Assistant to use MQTT is a straightforward process.<\/p>\n\n\n\n<p>I have a few MQTT projects upcoming\/completed that I&#8217;ll write about over the next few weeks:<\/p>\n\n\n\n<ul><li>Building a <a href=\"http:\/\/hometechhacker.com\/make-your-own-smart-garage-door-opener-for-15\/\">smart garage door opener<\/a> using a <a href=\"http:\/\/hometechhacker.com\/shelly-1-review-small-inexpensive-versatile\/\">Shelly 1 relay<\/a><\/li><li>Putting together an inexpensive multisensor (light, temperature, motion, humidity) based on the <a href=\"https:\/\/amzn.to\/2YaCoeo\">NodeMCU<\/a><\/li><li>Using a Shelly 1 relay to <a href=\"http:\/\/hometechhacker.com\/shelly-1-relay-make-any-light-switch-smart\/\">add smart control to a light switch<\/a><\/li><li>Adding control and status monitoring of my irrigation system<\/li><li>Using a <a href=\"http:\/\/hometechhacker.com\/using-a-sonoff-rf-bridge-to-expand-your-smarthome\/\">Sonoff RF Bridge to enable 433Mhz RF devices to integrate with Home Assistant<\/a><\/li><\/ul>\n\n\n\n<p>As a reminder, I wrote an <a href=\"https:\/\/hometechhacker.com\/mqtt-home-assistant-using-docker-eclipse-mosquitto\/\">updated MQTT article<\/a> that you should use if you are interested in setting it up in Docker.<\/p>\n\n\n\n<p>Are any of you using MQTT? What do you use it for? Let me know in the comments or connect with me on <a href=\"https:\/\/twitter.com\/HomeTechHacker\">Twitter<\/a>!<\/p>\n\n\n\n<p class=\"has-small-font-size\"><em>This page contains affiliate links. If you purchase an item using an affiliate link I will receive a small commission at no cost to you. Affiliates do not influence my recommendations. Read my\u00a0<a href=\"http:\/\/hometechhacker.com\/disclosure-policy\/\" target=\"_blank\" rel=\"noreferrer noopener\">disclosures<\/a>\u00a0for more information.<\/em><\/p>\n<div class=\"ttr_end\"><\/div>","protected":false},"excerpt":{"rendered":"<p>MQTT is a great protocol to have in your automation arsenal. This article explains how to quickly get started with MQTT using Docker and Home Assistant. Note: I now use the Eclipse &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Starting with MQTT using Docker and Home Assistant\" class=\"read-more button\" href=\"https:\/\/hometechhacker.com\/mqtt-using-docker-and-home-assistant\/#more-1771\" aria-label=\"Read more about Starting with MQTT using Docker and Home Assistant\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":1804,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97,3,48,5],"tags":[42,32,103,72,46,11,7,104,102],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Starting with MQTT using Docker and Home Assistant - HomeTechHacker<\/title>\n<meta name=\"description\" content=\"MQTT is a great protocol to have in your automation arsenal. 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