{"id":2761,"date":"2018-09-10T11:33:56","date_gmt":"2018-09-10T11:33:56","guid":{"rendered":"http:\/\/dbtut.com\/?p=2761"},"modified":"2018-11-24T18:14:52","modified_gmt":"2018-11-24T18:14:52","slug":"installation-of-cassandra","status":"publish","type":"post","link":"https:\/\/dbtut.com\/index.php\/2018\/09\/10\/installation-of-cassandra\/","title":{"rendered":"INSTALLATION OF CASSANDRA"},"content":{"rendered":"<p>&nbsp;<\/p>\n<h3><strong>Pre-Installation Setup<\/strong><\/h3>\n<p>Before installing Cassandra in Linux environment, we require to set up Linux using <strong>ssh<\/strong> (Secure Shell). Follow the steps given below for setting up Linux environment.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>Setting the Path<\/strong><\/h3>\n<p>Set the path of Cassandra path in \u201c\/.bashrc\u201d as shown below.<\/p>\n<pre class=\"lang:default decode:true\">@linux ~]$ gedit ~\/.bashrc<\/pre>\n<pre class=\"lang:default decode:true \">export CASSANDRA_HOME = ~\/cassandra\r\n\r\nexport PATH = $PATH:$CASSANDRA_HOME\/bin<\/pre>\n<p>&nbsp;<\/p>\n<h2><strong>Download Cassandra<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-2763\" src=\"http:\/\/dbtut.com\/wp-content\/uploads\/2018\/09\/10.jpg\" alt=\"\" width=\"644\" height=\"389\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Unzip Cassandra using the command <strong>zxvf<\/strong> as shown below.<\/p>\n<pre class=\"lang:default decode:true \">$ tar zxvf apache-cassandra-&lt;version&gt;-bin.tar.gz.<\/pre>\n<p>&nbsp;<\/p>\n<p>Create a new directory named cassandra and move the contents of the downloaded file to it as shown below.<\/p>\n<pre class=\"lang:default decode:true \">$ mkdir Cassandra\r\n\r\n$ mv apache-cassandra-&lt;version&gt;\/* cassandra.<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Configure Cassandra<\/strong><\/h2>\n<p>Open the <strong>cassandra.yaml:<\/strong> file, which will be available in the <strong>bin<\/strong> directory of Cassandra.<\/p>\n<pre class=\"lang:default decode:true \">$ gedit cassandra.yaml<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>Note:<\/strong> If you have installed Cassandra from a deb or rpm package, the configuration files will be located in <strong>\/etc\/cassandra<\/strong> directory of Cassandra.<\/p>\n<p>The above command opens the <strong>cassandra.yaml<\/strong> file. Verify the following configurations. By default, these values will be set to the specified directories.<\/p>\n<ul>\n<li>data_file_directories <strong>\u201c\/var\/lib\/cassandra\/data\u201d<\/strong><\/li>\n<li>commitlog_directory <strong>\u201c\/var\/lib\/cassandra\/commitlog\u201d<\/strong><\/li>\n<li>saved_caches_directory <strong>\u201c\/var\/lib\/cassandra\/saved_caches\u201d<\/strong><\/li>\n<\/ul>\n<p>Make sure these directories exist and can be written to, as shown below.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>Create Directories<\/strong><\/h3>\n<p>As super-user, create the two directories <strong>\/var\/lib\/cassandra<\/strong> and <strong>\/var.\/log\/cassandra<\/strong> into which Cassandra writes its data.<\/p>\n<pre class=\"lang:default decode:true \">[root@linux cassandra]# mkdir \/var\/lib\/cassandra\r\n\r\n[root@linux cassandra]# mkdir \/var\/log\/cassandra<\/pre>\n<p>&nbsp;<\/p>\n<h3><strong>Give Permissions to Folders<\/strong><\/h3>\n<p>Give read-write permissions to the newly created folders as shown below.<\/p>\n<pre class=\"lang:default decode:true \">[root@linux \/]# chmod 777 \/var\/lib\/cassandra\r\n\r\n[root@linux \/]# chmod 777 \/var\/log\/cassandra<\/pre>\n<p>&nbsp;<\/p>\n<h3><strong>Start Cassandra<\/strong><\/h3>\n<p>To start Cassandra, open the terminal window, navigate to Cassandra home directory\/home, where you unpacked Cassandra, and run the following command to start your Cassandra server.<\/p>\n<pre class=\"lang:default decode:true \">$ cd $CASSANDRA_HOME\r\n\r\n$.\/bin\/cassandra -f<\/pre>\n<p>&nbsp;<\/p>\n<p>Using the \u2013f option tells Cassandra to stay in the foreground instead of running as a background process. If everything goes fine, you can see the Cassandra server starting.<\/p>\n\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_2761\" class=\"pvc_stats all  \" data-element-id=\"2761\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/dbtut.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Pre-Installation Setup Before installing Cassandra in Linux environment, we require to set up Linux using ssh (Secure Shell). Follow the steps given below for setting up Linux environment. &nbsp; Setting the Path Set the path of Cassandra path in \u201c\/.bashrc\u201d as shown below. @linux ~]$ gedit ~\/.bashrc export CASSANDRA_HOME = ~\/cassandra export PATH = &hellip;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_2761\" class=\"pvc_stats all  \" data-element-id=\"2761\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/dbtut.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[1308],"tags":[],"class_list":["post-2761","post","type-post","status-publish","format-standard","","category-cassandra"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - 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