{"id":31634,"date":"2020-04-16T11:55:54","date_gmt":"2020-04-16T16:55:54","guid":{"rendered":"https:\/\/www.rosehosting.com\/blog\/?p=31634"},"modified":"2022-06-03T03:33:03","modified_gmt":"2022-06-03T08:33:03","slug":"how-to-install-apache-cassandra-on-debian-9","status":"publish","type":"post","link":"https:\/\/www.rosehosting.com\/blog\/how-to-install-apache-cassandra-on-debian-9\/","title":{"rendered":"How to Install Apache Cassandra on Debian 9"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><p><img decoding=\"async\" class=\"alignnone size-full wp-image-32430\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/how-to-install-apache-cassandra-on-debian9.jpg\" alt=\"\" width=\"742\" height=\"372\" srcset=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/how-to-install-apache-cassandra-on-debian9.jpg 742w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/how-to-install-apache-cassandra-on-debian9-300x150.jpg 300w, https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/how-to-install-apache-cassandra-on-debian9-150x75.jpg 150w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><\/p>\n<p>In this tutorial, we will show you how to install Apache Cassandra on a <a href=\"https:\/\/www.rosehosting.com\/debian-hosting.html\" target=\"_blank\" rel=\"noopener noreferrer\">Debian 9 VPS<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignright size-full wp-image-32431\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/configure-apache-cassandra-dbms-database-management-on-debian-vps.jpg\" alt=\"\" width=\"120\" height=\"81\" \/>Apache Cassandra is a free and open-source distributed NoSQL database management system that provides High-Availability with no single point of failure. Cassandra does not use the table model seen in MySQL, MSSQL or PostgreSQL &#8211; rather, it uses a cluster model. It is designed to handle large amounts of data across commodity hardware. It provides linear scalability by adding a new machine to it without any interruption to applications. Apache Cassandra is used by many popular organizations including Apple, NetFlix, eBay, and Easou.<\/p>\n<p>Let&#8217;s begin with the installation.<br \/>\n<!--more--><\/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-662d79fb78f43\" 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-662d79fb78f43\"  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-apache-cassandra-on-debian-9\/#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-apache-cassandra-on-debian-9\/#Step-1-Connect-via-SSH-and-Update-the-OS\" title=\"Step 1: Connect via SSH and Update the OS\">Step 1: Connect via SSH and Update the OS<\/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-apache-cassandra-on-debian-9\/#Step-2-Install-Java-8\" title=\"Step 2: Install Java 8\">Step 2: Install Java 8<\/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-apache-cassandra-on-debian-9\/#Step-3-Install-Apache-Cassandra\" title=\"Step 3: Install Apache Cassandra\">Step 3: Install Apache Cassandra<\/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-apache-cassandra-on-debian-9\/#Step-4-Test-the-Apache-Cassandra-Installation\" title=\"Step 4: Test the Apache Cassandra Installation\">Step 4: Test the Apache Cassandra Installation<\/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-apache-cassandra-on-debian-9\/#Step-5-Configure-Apache-Cassandra\" title=\"Step 5: Configure Apache Cassandra\">Step 5: Configure Apache Cassandra<\/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<ul>\n<li>For the purposes of this tutorial, we will use a Debian 9 VPS.<\/li>\n<li>The latest version of Java 8, either the Oracle Java Standard Edition 8 or OpenJDK 8 is installed.<\/li>\n<li>Full SSH root access or a user with sudo privileges is also required.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Step-1-Connect-via-SSH-and-Update-the-OS\"><\/span><span id=\"1-Connect-via-SSH\" class=\"ez-toc-section\">Step 1: Connect via SSH and Update the OS<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Connect to your server via SSH as the root user using the following command:<\/p>\n<pre>ssh root@<span style=\"color: #ff0000;\">IP_ADDRESS<\/span> -p <span style=\"color: #ff0000;\">PORT_NUMBER<\/span><\/pre>\n<p>Remember to replace \u201c<span style=\"color: #ff0000;\">IP_ADDRESS<\/span>\u201d and \u201c<span style=\"color: #ff0000;\">PORT_NUMBER<\/span>\u201d with your server&#8217;s respective IP address and SSH port number.<\/p>\n<p>Before starting with the installation, you will need to update your OS packages to their latest versions. It&#8217;s easy to do, and it won&#8217;t take more than a few minutes.<\/p>\n<p>You can do this by running the following command:<\/p>\n<pre>apt-get update \napt-get upgrade<\/pre>\n<p>Once the updates are completed, we can move on to the next step.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step-2-Install-Java-8\"><\/span>Step 2: Install Java 8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Apache Cassandra requires the latest version of Java 8 to be installed. To install Java 8 on your Debian 9 VPS, run the following command:<\/p>\n<pre>apt-get install openjdk-8-jdk<\/pre>\n<p>Next, verify the Java installation by running the following command, which will print the Java version:<\/p>\n<pre>java -version<\/pre>\n<p>The output should look something like this:<\/p>\n<pre>openjdk version \"1.8.0_222\"\nOpenJDK Runtime Environment (build 1.8.0_222-8u222-b10-1~deb9u1-b10)\nOpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Step-3-Install-Apache-Cassandra\"><\/span>Step 3: Install Apache Cassandra<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To install Apache Cassandra on your server, we need to add the Apache Cassandra repository.<\/p>\n<p>Add the Cassandra repository by running the following command:<\/p>\n<pre>echo \"deb http:\/\/www.apache.org\/dist\/cassandra\/debian 311x main\" | tee -a \/etc\/apt\/sources.list.d\/cassandra.sources.list<\/pre>\n<p>Add the Apache Cassandra repository keys using the following command:<\/p>\n<pre>curl https:\/\/www.apache.org\/dist\/cassandra\/KEYS | apt-key add -\napt-key adv --keyserver pool.sks-keyservers.net --recv-key A278B781FE4B2BDA<\/pre>\n<p>Next, update the package index and install Apache Cassandra using the following command:<\/p>\n<pre>apt-get update\napt-get install cassandra<\/pre>\n<p>Once installed, start the Apache Cassandra service and enable it to start after system reboot with the following command:<\/p>\n<pre>systemctl start cassandra\nsystemctl enable cassandra<\/pre>\n<p>To check the service status, use the following command.<\/p>\n<pre>systemctl status cassandra<\/pre>\n<p>We should see the following output:<\/p>\n<pre>\u25cf cassandra.service - LSB: distributed storage system for structured data\nLoaded: loaded (\/etc\/init.d\/cassandra; generated; vendor preset: enabled)\nActive: active (running) since Wed 2019-07-24 16:31:25 UTC; 10s ago\nDocs: man:systemd-sysv-generator(8)\nCGroup: \/system.slice\/cassandra.service\n\u2514\u25009545 java -Xloggc:\/var\/log\/cassandra\/gc.log -ea -XX:+UseThreadPr\u2026on\n\nJul 24 16:31:25 cassandra systemd[1]: Starting LSB: distributed storage sys\u2026a...\nJul 24 16:31:25 cassandra systemd[1]: Started LSB: distributed storage syst\u2026ata.\nHint: Some lines were ellipsized, use -l to show in full.<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Step-4-Test-the-Apache-Cassandra-Installation\"><\/span>Step 4: Test the Apache Cassandra Installation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Apache Cassandra provides a <code>nodetool<\/code> command-line utility for managing Apache Cassandra cluster. Here, we can do some tests using the nodetool to verify the Cassandra cluster.<\/p>\n<p>To begin with, run the nodetool command to get the Cassandra server status.<\/p>\n<pre>nodetool status<\/pre>\n<p>And you should get an output similar to the following:<\/p>\n<pre>Datacenter: datacenter1\n=======================\nStatus=Up\/Down\n|\/ State=Normal\/Leaving\/Joining\/Moving\n-- Address Load Tokens Owns (effective) Host ID Rack\nUN 127.0.0.1 103.65 KiB 256 100.0% 562b6fc4-f5dc-4e64-ab42-4bbe490f9358 rack1<\/pre>\n<p>As you can see, the Apache Cassandra is &#8216;Up&#8217; with the &#8216;Normal&#8217; state. And it&#8217;s running under the localhost IP.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step-5-Configure-Apache-Cassandra\"><\/span>Step 5: Configure Apache Cassandra<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Apache Cassandra stores all of its configuration files in the <code>\/etc\/cassandra<\/code> directory and data is stored in the <code>\/var\/lib\/cassandra<\/code> directory.<\/p>\n<p>By default, Apache Cassandra is configured to listen on localhost only and you don\u2019t need to change the default configuration file if the client is also running on the same host.<\/p>\n<p>You can also connect Apache Cassandra with Cassandra Query Language (CQL) command-line utility.<\/p>\n<p>Simply run the following command to interact with Apache Cassandra:<\/p>\n<pre>cqlsh<\/pre>\n<p>The output will be similar to the following:<\/p>\n<pre>Connected to Test Cluster at 127.0.0.1:9042.\n[cqlsh 5.0.1 | Cassandra 3.11.4 | CQL spec 3.4.4 | Native protocol v4]\nUse HELP for help.\ncqlsh&gt;<\/pre>\n<p>By default, the Apache Cassandra cluster is named \u201cTest Cluster\u201d as shown in the above output. You can change the cluster name with the following command:<\/p>\n<pre>cqlsh&gt; UPDATE system.local SET cluster_name = 'RoseHosting Cluster' WHERE KEY = 'local';<\/pre>\n<p>Change &#8216;RoseHosting Cluster&#8217; with your desired name. Once done type exit to exit from the console. Next, open the cassandra.yaml configuration file and provide your new cluster name.<\/p>\n<pre>nano \/etc\/cassandra\/cassandra.yaml<\/pre>\n<p>Change the following line with your desired name:<\/p>\n<pre>cluster_name: 'RoseHosting Cluster'<\/pre>\n<p>Save and close the file. Then, clear the system cache with the following command:<\/p>\n<pre>nodetool flush system<\/pre>\n<p>Finally, restart the Apache Cassandra service to apply the configuration changes:<\/p>\n<pre>systemctl restart cassandra<\/pre>\n<p>Next, log in again with cqlsh and verify the new cluster name is visible.<\/p>\n<pre>cqlsh<\/pre>\n<p>The output will be similar to the following:<\/p>\n<pre>Connected to RoseHosting Cluster at 127.0.0.1:9042.\n[cqlsh 5.0.1 | Cassandra 3.11.4 | CQL spec 3.4.4 | Native protocol v4]\nUse HELP for help.\ncqlsh&gt;<\/pre>\n<p>Congratulations. We have successfully installed Apache Cassandra on our Debian 9 VPS. If you are new to Apache Cassandra, it is recommended to use the official documentation as a starting point. The documentation is available at the Apache Cassandra documentation page, and it will help you learn how to configure and use the service for your projects.<\/p>\n<p>Follow this guide for <a href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-apache-cassandra-on-ubuntu-20-04\/\">installing Apache Cassandra on Ubuntu 20.04<\/a><\/p>\n<hr \/>\n<p><img decoding=\"async\" class=\"alignleft size-full wp-image-32432\" src=\"https:\/\/www.rosehosting.com\/blog\/wp-content\/uploads\/2020\/02\/managed-databases-system-by-admins-on-debian-hosting-apache-cassandra.jpg\" alt=\"\" width=\"120\" height=\"81\" \/>Of course, you don\u2019t have to install Apache Cassandra on a Debian 9 by yourself if you use one of our Linux VPS Hosting services, in which case you can simply ask our expert Linux admins to install Apache Cassandra on a Debian 9 on your server for you. They are available 24\u00d77 and will take care of your request immediately.<\/p>\n<p><span style=\"color: #ff0000;\"><strong>PS<\/strong><\/span>. If you liked this post on <strong>how to Install Apache Cassandra on Debian 9<\/strong>, please share it with your friends on the social networks using the buttons on the left or simply leave a reply below. Thanks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this tutorial, we will show you how to install Apache Cassandra on a Debian 9 VPS. Apache Cassandra is &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"How to Install Apache Cassandra on Debian 9\" class=\"read-more button\" href=\"https:\/\/www.rosehosting.com\/blog\/how-to-install-apache-cassandra-on-debian-9\/#more-31634\" aria-label=\"Read more about How to Install Apache Cassandra on Debian 9\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":32430,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1702,1700,13],"tags":[758,1577],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Install Apache Cassandra on Debian 9 - RoseHosting<\/title>\n<meta name=\"description\" content=\"How to Install Apache Cassandra on Debian 9 - RoseHosting\" \/>\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-apache-cassandra-on-debian-9\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Install Apache Cassandra on Debian 9 - 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