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How to Install Apache Cassandra 3.11.x on Ubuntu 16.04 LTS Apache Cassandra is a free and open source NoSQL database management system that is designed to provide scalability, high availability, and uncompromised performance. In this article will guide you through installing the latest stable release of Apache Cassandra, Apache Cassandra 3.11.2, on a Ubuntu 16.04 LTS server instance. Step 1: Install OpenJDK JRE 8 Apache Cassandra requires the latest release of Java 8. For that you can choose to install the latest release of OpenJDK JRE 1.8 as below: sudo apt install openjdk-8-jre -y Having OpenJDK JRE 1.8 installed, you can confirm the installation result: java -version The output will be similar to the following: openjdk version "1.8.0_151" OpenJDK Runtime Environment (build 1.8.0_151-8u151-b12-0ubuntu0.16.04.2-b12) OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode) Optionally, you can create the  JAVA_HOME  environment variable as follows: echo &

Loopback 3.0- Create datasource and model for Cassandra Pre-Installed:-                           Loopback 3.0 and cassandra  Step 1: Creating a Keyspace using Cqlsh cqlsh.> CREATE KEYSPACE test WITH replication = {'class':'SimpleStrategy', 'replication_factor' : 3}; cqlsh> DESCRIBE keyspaces; test system system_traces Step 2: Creating a table using Cqlsh cqlsh> USE test; cqlsh:test>; CREATE TABLE pullcassandra( id text PRIMARY KEY emp_id text, emp_name text, emp_city text, emp_sal text, emp_phone text, ); "id" - for store the object key which is generated by loopback  Step 3: Creating a datasouce In your application root directory, enter this command to install the connector: npm install loopback-connector-cassandra --save $ lb datasource ? Enter the data-source name: mycass ? Select the connector for mycass: Cassandra (supported by StrongLoop) Connector-specif

Steps for Apache Spark Installation On Ubuntu Follow the steps given below for Apache Spark Installation On Ubuntu- 1. Deployment Platform i. Platform Requirements Operating System: You can use Ubuntu 14.04 or later (other Linux flavors can also be used like CentOS, Redhat, etc.) Spark: Apache Spark 1.6.1 or later ii. Setup Platform If you are using Windows / Mac OS you can create a virtual machine and install Ubuntu using VMWare Player, alternatively, you can create a virtual machine and install Ubuntu using Oracle Virtual Box. 2. Prerequisites i. Install Java 7 a. Install Python Software Properties $sudo apt-get install python-software-properties b. Add Repository $sudo add-apt-repository ppa:webupd8team/java c. Update the source list $sudo apt-get update d. Install Java $sudo apt-get install oracle-java7-installer 3. Install Apache Spark i. Download Spark You can download Apache Spark from the below link. In the package type please selec

How to Install MongoDB on Ubuntu 16.04                                         MongoDB is an open source database management system (DBMS)  that uses a  document-oriented database model which supports various forms of data. Step 1: Adding the MongoDB Repository       MongoDB is already included in Ubuntu package repositories, but the official MongoDB repository  provides most up-to-date version and is the recommended way of installing the software. In this step,  we will add this official repository to our server. Ubuntu ensures the authenticity of software packages by verifying that they are signed with GPG keys,  so we first have to import they key for the official MongoDB repository. sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927 After successfully importing the key, you will see: gpg: Total number processed: 1 gpg:               imported: 1  (RSA: 1) Next, we have to add the MongoDB repository details so apt will