Apache Cassandra is a NoSQL database intended for storing large amounts of data in a decentralized, highly available cluster. NoSQL refers to a database with a data model other than the tabular relations used in relational databases such as MySQL, PostgreSQL, and Microsoft SQL.<\/p>\n
Pre-Flight Check
\nThese instructions are intended for installing Cassandra 2 on a single CentOS 7 node.
\nI\u2019ll be working from a Liquid Web Core Managed CentOS 7 server, and I\u2019ll be logged in as root.
\nYou may be able to skip to Step #2 if you already have a stable version of Java 7 (preferably the Oracle\/Sun JVM). Check to see if your server already has Java installed by running the following command: java -version<\/p>\n
Step 1: Install Java
\nFirst, you\u2019ll follow a simple best practice: ensuring the list of available packages is up to date before installing anything new.<\/p>\n
yum -y update<\/p><\/blockquote>\n
At this point, installing java is as simple as running just one command:<\/p>\n
yum -y install java<\/p><\/blockquote>\n
Step #2: Add the DataStax Community Repository
\nFor a refresher on editing files with vim see: New User Tutorial: Overview of the Vim Text Editor<\/p>\nvim \/etc\/yum.repos.d\/datastax.repo<\/p><\/blockquote>\n
Add the following information to the file you\u2019ve created, using i to insert:<\/p>\n
[datastax]
\nname = DataStax Repo for Apache Cassandra
\nbaseurl = http:\/\/rpm.datastax.com\/community
\nenabled = 1
\ngpgcheck = 0<\/blockquote>\nThen exit and save the file with the command :wq (see the example below):
\nHow To Install Cassandra 2 and Run a Single Node Cluster on CentOS 6 – 02 DataStax Repo<\/p>\nStep #3: Install Apache Cassandra 2
\nAt this point, installing Cassandra is as simple as running just one command:<\/p>\nyum -y install dsc21<\/p><\/blockquote>\n
Step #4: Get Cassandra Running
\nStart-Up Cassandra<\/p>\nsystemctl start cassandra<\/p><\/blockquote>\n
Check Cassandra Service Status<\/p>\n
systemctl status cassandra<\/p><\/blockquote>\n
Enable Cassandra to Start at Boot<\/p>\n
systemctl enable cassandra<\/p><\/blockquote>\n
Enter the Cassandra Command Line<\/p>\n
cqlsh<\/p><\/blockquote>\n
The cqlsh interface should look similar to:<\/p>\n
Connected to Test Cluster at localhost:9160.
\n[cqlsh 4.1.1 | Cassandra 2.0.10 | CQL spec 3.1.1 | Thrift protocol 19.39.0]
\nUse HELP for help.
\ncqlsh><\/blockquote>\nCheck Cassandra Node Status<\/p>\n
nodetool status<\/p><\/blockquote>\n
If you get an error such as: \u2018Failed to connect to \u2019127.0.0.1:7199\u2032: Connection refused\u2019<\/p>\n
Then visit the following tutorial: Error: Failed to connect to \u2019127.0.0.1:7199\u2032: Connection refused (Cassandra) [SOLVED]<\/p>\n
Restart Cassandra<\/p>\n
systemctl restart cassandra<\/p><\/blockquote>\n
Shutdown Cassandra<\/p>\n
service cassandra stop<\/p><\/blockquote>\n
Be Sociable, Share!<\/p>\n","protected":false},"excerpt":{"rendered":"
Apache Cassandra is a NoSQL database intended for storing large amounts of data in a decentralized, highly available cluster. NoSQL refers to a database with a data model other than the tabular relations used in relational databases such as MySQL, PostgreSQL, and Microsoft SQL. Pre-Flight Check These instructions are intended for installing Cassandra 2 on a single CentOS 7 node. I\u2019ll be working from a Liquid Web Core Managed CentOS 7 server, and I\u2019ll be logged in as root. You may be able to skip to Step #2 if you already have a stable version of Java 7 (preferably the Oracle\/Sun JVM). Check to see if your server already has Java installed by running the following command: java -version Step 1: Install Java First, you\u2019ll follow a simple best practice: ensuring the list of available packages is up to date before installing anything new. yum -y update At this point, installing java is as simple as running just one command: yum -y install java Step #2: Add the DataStax Community Repository For a refresher on editing files with vim see: New User Tutorial: Overview of the Vim Text Editor vim \/etc\/yum.repos.d\/datastax.repo Add the following information to the file you\u2019ve created, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"ngg_post_thumbnail":0,"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[4,5],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5q9Zn-eq","jetpack-related-posts":[{"id":678,"url":"https:\/\/blog.box.kr\/?p=678","url_meta":{"origin":894,"position":0},"title":"[Linux] Installing Tomcat 8 on a CentOS 7","date":"2015-04-13","format":false,"excerpt":"UPDATE SYSTEM First thing to do is to SSH to your CentOS 7 VPS, fire up a screen session and update your system using yum: ## screen -U -S tomcat8-centos7 ## yum update You may also want to install a text editor like nano or vim ## yum install vim\u2026","rel":"","context":"In "\uae30\uc220\uc790\ub8cc"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":673,"url":"https:\/\/blog.box.kr\/?p=673","url_meta":{"origin":894,"position":1},"title":"[Linux]Install MariaDB 10.0 on CentOS linux using YUM command","date":"2015-04-13","format":false,"excerpt":"Adding the MariaDB YUM Repository We highly recommended to use custom\u00a0MariaDB YUM\u00a0repository to install. 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You need to install the following packages (which are installed by default until and unless you removed it or skipped it while installing CentOS) openssh-clients : The OpenSSH client applications openssh-server : The\u2026","rel":"","context":"In "\uae30\uc220\uc790\ub8cc"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":718,"url":"https:\/\/blog.box.kr\/?p=718","url_meta":{"origin":894,"position":4},"title":"How To Install Linux, Nginx, MySQL, PHP (LEMP) stack On CentOS 7","date":"2015-04-15","format":false,"excerpt":"https:\/\/www.digitalocean.com\/community\/tutorials\/how-to-install-linux-nginx-mysql-php-lemp-stack-on-centos-7 \u00a0 How To Install Linux, Nginx, MySQL, PHP (LEMP) stack On CentOS 7 Introduction A LEMP software stack is a group of open source software that is typically installed together to enable a server to host dynamic websites and web apps. This term is actually an acronym which represents\u2026","rel":"","context":"In "\uae30\uc220\uc790\ub8cc"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":729,"url":"https:\/\/blog.box.kr\/?p=729","url_meta":{"origin":894,"position":5},"title":"install PostgreSQL on CentOS7","date":"2015-04-21","format":false,"excerpt":"1.\u00a0Install ( \u00a02015-04-21 > \ucd5c\uc2e0 \ubc84\uc804\uc740 9.4\u00a0 ) [root@localhost ~]# rpm -Uvh http:\/\/yum.postgresql.org\/9.4\/redhat\/rhel-7-x86_64\/pgdg-centos94-9.4-1.noarch.rpm http:\/\/yum.postgresql.org\/9.4\/redhat\/rhel-7-x86_64\/pgdg-centos94-9.4-1.noarch.rpm(\uc744)\ub97c \ubcf5\uad6c\ud569\ub2c8\ub2e4 \uacbd\uace0: \/var\/tmp\/rpm-tmp.z0BMz8: Header V4 DSA\/SHA1 Signature, key ID 442df0f8: NOKEY \uc900\ube44 \uc911...\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ################################# [100%] Updating \/ installing... 1:pgdg-centos94-9.4-1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ################################# [100%] [root@localhost ~]# yum install postgresql94 postgresql94-server postgresql94-libs postgresql94-contrib postgresql94 Loaded plugins: fastestmirror, langpacks http:\/\/linuxdownload.adobe.com\/linux\/x86_64\/repodata\/repomd.xml: [Errno\u2026","rel":"","context":"In "\uae30\uc220"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts\/894"}],"collection":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=894"}],"version-history":[{"count":0,"href":"https:\/\/blog.box.kr\/index.php?rest_route=\/wp\/v2\/posts\/894\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.box.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}