Setup Puppet Server 5 on CentOS 7

Puppet is a ruby based configuration management tool (IT automation software), licensed under Apache 2.0 designed to help system administrators, automate many repetitive task they regularly perform . It is open-source, flexible, customizable framework for managing the configuratons of computer system. It defines and enforce the state of your infrustructure…

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Install LAMP on CentOS 7

A LAMP (Linux, Apache, MySQL, PHP) stack is free, and open-source web stack. It is used for hosting web content in a Linux environment.Many consider this as the platform of choice for high performance web apps. In this article, i will illustrate the LAMP setup process. CentOS7 Upgrade centos to…

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Install LAMP on Ubuntu 18.04 LTS

A LAMP (Linux, Apache, MySQL, PHP) stack is free, and open-source web stack. It is used for hosting web content in a Linux environment.Many consider this as the platform of choice for high performance web apps. In this article i will illustrate the LAMP setup process. Ubuntu 18.04 LTS Update…

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.my.cnf: MySQL User and Password

This is only for test environment and lazy people. Every time we have to add MySQL username and password to log in. Using this way we can login without credentials. MySQL Username and Password After the below changes, you will be able to login without credentials. All the commands like…

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ScyllaDB Monitoring

ScyllaDB Monitoring Stack can monitor all the Scylla infrastructure easily. Scylla team has beautifully explained, all the steps to setup monitoring. It’s very straight forward and any body can configure it using the below URLs. ScyllaDB URLs http://docs.scylladb.com/operating-scylla/monitoring/monitoring_stack/ http://docs.scylladb.com/operating-scylla/monitoring/monitor_without_docker/ Troubleshooting I’m just sharing up a scenario, where i faced some…

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Setup Hadoop 3.1.0 Single Node Cluster on Ubuntu 16.04

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware…

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Setup Cassandra Cluster on CentOS 7

Apache Cassandra is a free and open-source distributed NoSQL database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure. Cassandra offers robust support for clusters spanning multiple datacenters, with asynchronous masterless replication allowing low latency operations for…

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Setup Scylla Cluster on CentOS 7

Scylla Is Next Generation NoSQL. Power your mission-critical applications with the best traits of Apache Cassandra at 10x the performance and low tail-latency at all times. Prequisite CentOS 7.2 or later, for the 64-bit x86_64 architecture. ABRT conflict with Scylla coredump configuration. Remove it before installing Scylla: sudo yum remove…

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OrientDB DEMODB Database Queries

Connect to OrientDB console krishna@ubuntu:/opt/orientdb/bin$ ./console.sh OrientDB console v.3.0.0m2 (build 31b455cec3cc97d11be0748e31ed1a03ff6a23ac) https://www.orientdb.com Type ‘help’ to display all the supported commands. orientdb> orientdb> Connect to localhost orientdb> CONNECT remote:localhost root admin Disconnecting from the database [null]…OK Connecting to remote Server instance [remote:localhost] with user ‘root’…OK orientdb {server=remote:localhost/}> Connect to localhost with…

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Setup OrientDB 3.0.0.m2 on Ubuntu 16.04

OrientDB is an open source NoSQL database management system written in Java. It is a multi-model database, supporting graph, document, key/value and object models but the relationships are managed as in graph databases with direct connections between records. It supports schema-less, schema-full and schema-mixed modes. It has a strong security…

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