{"id":30069,"date":"2019-03-26T11:51:35","date_gmt":"2019-03-26T16:51:35","guid":{"rendered":"https:\/\/www.rosehosting.com\/blog\/?p=30069"},"modified":"2022-12-30T02:52:40","modified_gmt":"2022-12-30T08:52:40","slug":"how-to-install-sensu-on-ubuntu-18-04","status":"publish","type":"post","link":"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/","title":{"rendered":"How To Install Sensu on Ubuntu 18.04"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><p><img decoding=\"async\" class=\"size-full wp-image-30150 alignnone\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/install-sensu-ubuntu18.jpg\" alt=\"Install Sensu on Ubuntu\" width=\"742\" height=\"372\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/install-sensu-ubuntu18.jpg 742w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/install-sensu-ubuntu18-150x75.jpg 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/install-sensu-ubuntu18-300x150.jpg 300w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><\/p>\n<p><strong>Sensu<\/strong>\u00a0is an open-source monitoring solution that has the capability to monitor different environments, especially for mixed environments like public, private, and hybrid clouds. Sensu also provides numerous plugins that can be used as what they call &#8220;Sensu checks&#8221;. These plugins monitor the health of services, server resources, and collect different server metrics from different services. It also provides alerts and notifications.<\/p>\n<p>It is developed using the Ruby language. It utilizes RabbitMQ as the intermediary for the messages, and Redis for data-caching and storage.<\/p>\n<p><!--more--><\/p>\n<p>In this article, we will show you step-by-step instructions on\u00a0<strong>how to install <b>Sensu\u00a0<\/b>on Ubuntu 18.04<\/strong>.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6635443c422c9\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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-6635443c422c9\"  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:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Prerequisites\" title=\"Prerequisites:\">Prerequisites:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Check-for-Updates-and-Install-Dependencies\" title=\"Check for Updates and Install Dependencies\">Check for Updates and Install Dependencies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Installing-and-Setting-Up-RabbitMQ\" title=\"Installing and Setting Up RabbitMQ\">Installing and Setting Up RabbitMQ<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Installing-and-Setting-Up-Redis\" title=\"Installing and Setting Up Redis\">Installing and Setting Up Redis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Installing-Sensu\" title=\"Installing Sensu\">Installing Sensu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Configuring-Sensu\" title=\"Configuring Sensu\">Configuring Sensu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Installing-and-Setting-Up-Uchiwa-as-Sensus-Dashboard-Web-Interface\" title=\"Installing and Setting Up Uchiwa as Sensu&#8217;s Dashboard Web Interface\">Installing and Setting Up Uchiwa as Sensu&#8217;s Dashboard Web Interface<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Configure-Sensu-Server-as-a-Client\" title=\"Configure Sensu Server as a Client\">Configure Sensu Server as a Client<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#Managing-Sensu-Services\" title=\"Managing Sensu Services\">Managing Sensu Services<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Prerequisites\"><\/span>Prerequisites:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For this tutorial, we recommend using a fresh\u00a0<a href=\"https:\/\/www.rosehosting.com\/ubuntu-hosting.html\">Ubuntu 18.04 VPS<\/a>\u00a0installation.<\/p>\n<p>Make sure that your server meets the following minimum hardware and software configuration for the Sensu server back-end:<\/p>\n<p><strong>Hardware:<\/strong><\/p>\n<ul>\n<li>4 CPU Cores<\/li>\n<li>4 GB of RAM<\/li>\n<li>4 GB of free disk space<\/li>\n<li>Reliable network link<\/li>\n<\/ul>\n<p><strong>Software:<\/strong><\/p>\n<ul>\n<li>Ubuntu 18.04<\/li>\n<li>A Dedicated IP address<\/li>\n<li>Full root privileges, or the root user<\/li>\n<\/ul>\n<p>To learn more about back-end and agent requirements for Sensu, you may visit their official article about <a href=\"https:\/\/docs.sensu.io\/sensu-go\/latest\/operations\/deploy-sensu\/hardware-requirements\/\">hardware requirements<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Check-for-Updates-and-Install-Dependencies\"><\/span>Check for Updates and Install Dependencies<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Log in to your server via SSH:<\/p>\n<pre>ssh [username]@[server_ip_address]<\/pre>\n<p>Be sure to replace &#8220;username&#8221; with the account name of a root user found on the server (or the root user itself), and replace &#8220;server_ip&#8221; with the IP address of your server.<\/p>\n<p>Before starting with the installation, it is recommended to update all Ubuntu packages to their latest versions:<\/p>\n<pre>apt-get update\r\napt-get upgrade<\/pre>\n<p>To avoid the &#8220;missing libraries&#8221; issue in future installations, installing basic dependencies is recommended:<\/p>\n<pre>apt-get install software-properties-common build-essential -y<\/pre>\n<h2 id=\"install-and-configure-rabbitmq\"><span class=\"ez-toc-section\" id=\"Installing-and-Setting-Up-RabbitMQ\"><\/span>Installing and Setting Up RabbitMQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>RabbitMQ is the most-popular message broker. It will act as the intermediary messaging system for Sensu. RabbitMQ requires Erlang &#8211; a programming language which is used for building real-time application systems.<\/p>\n<p>To install Erlang, use the following commands to install the Erlang repository package:<\/p>\n<pre>cd \/opt\r\nwget https:\/\/packages.erlang-solutions.com\/erlang-solutions_1.0_all.deb\r\ndpkg -i erlang-solutions_1.0_all.deb<\/pre>\n<p>After setting up the Erlang and RabbitMQ repository and updating our Ubuntu installation, we can now proceed to install the Erlang package by simply typing the following:<\/p>\n<pre>apt-get update\r\napt-get install erlang rabbitmq-server<\/pre>\n<p>To verify if the RabbitMQ service was successfully installed, run the following to check the status of the RabbitMQ service:<\/p>\n<pre>systemctl status rabbitmq-server<\/pre>\n<p>You should be able to see a message similar to this one:<\/p>\n<p><code>rabbitmq-server.service - RabbitMQ Messaging Server<br \/>\nLoaded: loaded (\/lib\/systemd\/system\/rabbitmq-server.service; enabled; vendor<br \/>\nActive: active (running) since Sun 2019-03-17 23:12:51 CDT; 1min 22s ago<\/code><\/p>\n<p>Now, we need to create a vhost for our Sensu installation:<\/p>\n<pre>rabbitmqctl add_vhost \/sensu<\/pre>\n<p>Next is to add a user to the vhost. Please replace [password] with a strong password.<\/p>\n<pre>rabbitmqctl add_user sensu [password]<\/pre>\n<p>Finally, grant full permissions to our &#8220;sensu&#8221; user:<\/p>\n<pre>rabbitmqctl set_permissions -p \/sensu sensu \".*\" \".*\" \".*\"<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Installing-and-Setting-Up-Redis\"><\/span>Installing and Setting Up Redis<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Redis is being used by Sensu as its main data-caching system for the data produced by monitoring agents, including checks, events, alerts, and notifications.<\/p>\n<p>Installing the Redis server is simple &#8211; you only need to type the following:<\/p>\n<pre>apt-get -y install redis-server<\/pre>\n<p>To verify that the Redis server is running:<\/p>\n<pre>systemctl status redis-server<\/pre>\n<p>You should see &#8220;Active(running)&#8221; in the results:<br \/>\n<code>redis-server.service - Advanced key-value store<br \/>\nLoaded: loaded (\/lib\/systemd\/system\/redis-server.service; enabled; vendor pre<br \/>\nActive: active (running) since Sun 2019-03-17 23:23:15 CDT; 1min 15s ago<\/code><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Installing-Sensu\"><\/span>Installing Sensu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>After installing the two main requirements, we can now proceed with the Sensu Core installation and configuration.<\/p>\n<p>As of this writing, Sensu Core package is not yet officially available in Ubuntu repository. To add Sensu&#8217;s official repository and keys, use the following commands:<\/p>\n<pre>echo \"deb https:\/\/sensu.global.ssl.fastly.net\/apt bionic main\" | sudo tee \/etc\/apt\/sources.list.d\/sensu.list\r\nwget -O- https:\/\/sensu.global.ssl.fastly.net\/apt\/pubkey.gpg | sudo apt-key add -<\/pre>\n<p>The next step is to update and finally install the Sensu package:<\/p>\n<pre>apt-get update\r\napt-get install sensu -y<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Configuring-Sensu\"><\/span>Configuring Sensu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>After installing Sensu, we will need to configure API, RabbitMQ, and Redis for Sensu by creating individual configuration files which are in the JSON format. We will be using <code>nano<\/code> to open the configuration files.<\/p>\n<h3>API:<\/h3>\n<pre>nano\u00a0\/etc\/sensu\/conf.d\/api.json<\/pre>\n<pre class=\"code\">{\r\n  \"api\": {\r\n    \"host\": \"localhost\",\r\n    \"bind\": \"0.0.0.0\",\r\n    \"port\": 4567\r\n  }\r\n}<\/pre>\n<h3>RabbitMQ:<\/h3>\n<pre>nano\u00a0\/etc\/sensu\/conf.d\/rabbitmq.json<\/pre>\n<pre class=\"code\">{\r\n  \"rabbitmq\": {\r\n    \"host\": \"127.0.0.1\",\r\n    \"port\": 5672,\r\n    \"vhost\": \"\/sensu\",\r\n    \"user\": \"sensu\",\r\n    \"password\": \"[password]\"\r\n  }\r\n}<\/pre>\n<h3>Redis:<\/h3>\n<pre>nano\u00a0\/etc\/sensu\/conf.d\/redis.json<\/pre>\n<pre class=\"code\">{\r\n  \"redis\": {\r\n    \"host\": \"127.0.0.1\",\r\n    \"port\": 6379\r\n  }\r\n}<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Installing-and-Setting-Up-Uchiwa-as-Sensus-Dashboard-Web-Interface\"><\/span>Installing and Setting Up Uchiwa as Sensu&#8217;s Dashboard Web Interface<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sensu has no monitoring dashboard installed by default. Uchiwa is an open-source dashboard designed for Sensu.<\/p>\n<p>To install Uchiwa, type the following commands:<\/p>\n<pre>apt-get install uchiwa -y<\/pre>\n<p>Once installed, we need to create the config file for Sensu. It is recommended to use a strong password for the Uchiwa admin account:<\/p>\n<pre>nano \/etc\/sensu\/uchiwa.json<\/pre>\n<pre class=\"code\">{\r\n  \"sensu\": [\r\n    {\r\n      \"name\": \"sensu.your-domain.com\",\r\n      \"host\": \"127.0.0.1\",\r\n      \"port\": 4567,\r\n      \"timeout\": 10\r\n    }\r\n  ],\r\n  \"uchiwa\": {\r\n    \"host\": \"0.0.0.0\",\r\n    \"port\": 3000,\r\n    \"refresh\": 10,\r\n    \"user\": \"admin\",\r\n    \"pass\": \"[password]\"\r\n  }\r\n}<\/pre>\n<p>Remember to replace [password] with a strong password of your choice.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Configure-Sensu-Server-as-a-Client\"><\/span>Configure Sensu Server as a Client<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We can setup Sensu to monitor itself by creating the following file:<\/p>\n<pre>nano \/etc\/sensu\/conf.d\/client.json<\/pre>\n<pre class=\"code\">{\r\n  \"client\": {\r\n    \"environment\": \"development\",\r\n    \"name\": \"sensu-server\",\r\n    \"address\": \"127.0.0.1\",\r\n    \"subscriptions\": [\r\n      \"development\",\r\n      \"sensu-server\"\r\n    ]\r\n  }\r\n}<\/pre>\n<p>Finally, setting the correct permissions for the configuration is required.<\/p>\n<pre>chown -R sensu:sensu \/etc\/sensu\/conf.d\/*<\/pre>\n<pre>chown sensu:sensu \/etc\/sensu\/uchiwa.json<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Managing-Sensu-Services\"><\/span>Managing Sensu Services<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To enable automatic startup of all services at boot:<\/p>\n<pre class=\"code\">systemctl enable sensu-server \r\nsystemctl enable sensu-api\r\nsystemctl enable sensu-client \r\nsystemctl enable uchiwa<\/pre>\n<p>Let&#8217;s make sure that all services are started:<\/p>\n<pre>systemctl start sensu-server \r\nsystemctl start sensu-api\r\nsystemctl start sensu-client \r\nsystemctl start uchiwa<\/pre>\n<p>You may now access your Uchiwa dashboard using <code>http:\/\/[server's public IP]:3000<\/code>. You should be able to see sensu-server as a client.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-30120\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-1024x242.png\" alt=\"\" width=\"1024\" height=\"242\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-1024x242.png 1024w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-150x35.png 150w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-300x71.png 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-768x181.png 768w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa-1080x255.png 1080w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2019\/03\/uchiwa.png 1917w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong>That&#8217;s it &#8211;\u00a0<\/strong>you now have a working Sensu monitoring server\u00a0on your Ubuntu 18.04 server.<\/p>\n<hr \/>\n<p>Of\u00a0course, you don\u2019t have to <strong>install <b>Sensu\u00a0<\/b>on Ubuntu 18.04<\/strong> if you have an\u00a0<a href=\"https:\/\/www.rosehosting.com\/ubuntu-hosting.html\">Ubuntu VPS<\/a> with us. You can simply ask our support team to install Sensu on Ubuntu 18.04 for you. They are available 24\/7 and will be able to help you with the installation.<\/p>\n<p>There is a new updated article on <a href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-20-04\/\" target=\"_blank\" rel=\"noopener\">how to Install Sensu on Ubuntu 20.04 <\/a>in our step-by-step guide.<\/p>\n<p><span style=\"color: #ff0000;\"><strong>PS<\/strong><\/span>. If you enjoyed reading this blog post on how to install Sensu on Ubuntu 18.04, feel free to share it on social networks using the shortcuts below, or simply leave a comment in the comments section. Thanks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sensu\u00a0is an open-source monitoring solution that has the capability to monitor different environments, especially for mixed environments like public, private, &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"How To Install Sensu on Ubuntu 18.04\" class=\"read-more button\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/#more-30069\" aria-label=\"Read more about How To Install Sensu on Ubuntu 18.04\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":30150,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1236,13,1698],"tags":[324,1785,59],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Install Sensu On Ubuntu 18.04 | RoseHosting<\/title>\n<meta name=\"description\" content=\"Learn how to configure and install Sensu on Ubuntu 18.04. Sensu is a full-stack monitoring for businesses, and is available on Ubuntu.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-sensu-on-ubuntu-18-04\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Install Sensu On Ubuntu 18.04 | RoseHosting\" \/>\n<meta property=\"og:description\" content=\"Learn how to configure and install Sensu on Ubuntu 18.04. 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