Tag: CentOS

Feed: Planet MySQL; Author: Severalnines; This blog is aimed at explaining an overview of cross replication between PostgreSQL and MySQL, and further discussing the methods of configuring cross replication between the two database servers. Traditionally, the databases involved in a cross replication setup are called heterogeneous databases, which is a good approach to move away from one RDBMS server to another. Both PostgreSQL and MySQL databases are conventionally RDBMS databases but they also offer NoSQL capability with added extensions to have the best of both worlds. This article focuses on the discussion of replication between PostgreSQL and MySQL from an ... Read More

Feed: AWS Partner Network (APN) Blog. Author: Preet Virk. By Kiran Chadalavada, AWS Business Leader at Cognizant AWS PracticeBy Soumya Banerjee, Lead Architect, AWS Practice at Cognizant AWS PracticeHundreds of large enterprises rely on Cognizant’s ability to provide customized cloud management platform capabilities with a differentiated experience. To excel, we integrate multiple management tools into our Cloud Management Platform (CMP) to provide a unified view of customers’ Amazon Web Services (AWS) environments. When it comes to managing workloads across hybrid and heterogeneous cloud environments, a key challenge is dealing with asset tracking. This includes software and hardware inventory. As we provide customers ... Read More

Feed: R-bloggers. Author: R Views. Roland Stevenson is a data scientist and consultant who may be reached on Linkedin. reticulate is an R package that allows us to use Python modules from within RStudio. I recently found this functionality useful while trying to compare the results of different uplift models. Though I did have R’s uplift package producing Qini charts and metrics, I also wanted to see how things looked with Wayfair’s promising pylift package. Since pylift is only available in python, reticulate made it easy for me to quickly use pylift from within RStudio. In the article below, I’ll ... Read More

Feed: CDH – Cloudera Engineering Blog. Author: Shelby Khan. HDFS erasure coding (EC), a major feature delivered in Apache Hadoop 3.0, is also available in CDH 6.1 for use in certain applications like Spark, Hive, and MapReduce. The development of EC has been a long collaborative effort across the wider Hadoop community. Including EC with CDH 6.1 helps customers adopt this new feature by adding Cloudera’s first-class enterprise support. While previous versions of HDFS achieved fault tolerance by replicating multiple copies of data (similar to RAID1 on traditional storage arrays), EC in HDFS significantly reduces storage overhead while achieving similar ... Read More

Feed: Planet MySQL; Author: Severalnines; This blog is aimed at explaining an overview of cross replication between PostgreSQL and MySQL, and further discussing the methods of configuring cross replication between the two database servers. Traditionally, the databases involved in a cross replication setup are called heterogeneous databases, which is a good approach to move away from one RDBMS server to another. Both PostgreSQL and MySQL databases are conventionally RDBMS databases but they also offer NoSQL capability with added extensions to have the best of both worlds. This article focuses on the discussion of replication between PostgreSQL and MySQL from an ... Read More

Feed: Microsoft Azure Blog. Author: Christine Alford. AGIR Segurança Cibernética - Certificação PCI DSS: Obtain PCI DSS certification by performing gaps analysis, generating reports with action plans, consulting for correction of nonconformities, conducting vulnerability scans and intrusion tests, and more. AnatomyX: By providing an immersive, anatomically accurate learning environment and offering collaborative learning experiences, AnatomyX is revolutionizing the way students learn anatomy. Artig.io: Artigio is a turnkey solution for the digitalization and publication of museums' and libraries' collections. It offers proven technology based on Azure, unlimited data storage, unlimited users, and more. Askdata: Askdata enables business users to interact with ... Read More

Feed: Planet MySQL; Author: abhinav prasad gupta; Install MySQL on CentOS using DBdeployer 1. Here It is assumed You will have a CentOS system/VM. If not, then please find my this blog post link where you will get instruction about, how you can create CentOS virtual machine using the vagrant.  2. Connect to CentOS VM abhinavs-MacBook-Air:centos7-test-vm agupta$ pwd /Users/agupta/vagrant_box/centos7-test-vm abhinavs-MacBook-Air:centos7-test-vm agupta$ vagrant ssh  [vagrant@centos7-test-vm ~]$ sudo su - [root@centos7-test-vm ~]# 3. Run below command to install the latest DBdeployer package  [root@centos7-test-vm ~]# yum -y install wget [root@centos7-test-vm ~]# VERSION=1.30.0 [root@centos7-test-vm ~]# OS=linux [root@centos7-test-vm ~]# origin=https://github.com/datacharmer/dbdeployer/releases/download/v$VERSION [root@centos7-test-vm ~]# wget $origin/dbdeployer-$VERSION.$OS.tar.gz [root@centos7-test-vm ... Read More

Feed: MemSQL Blog. Author: Jacky Liang. A columnstore database takes all the values in a given column – the zip code column in a customer database, for instance – and stores all the zip code values in a single row, with the column number as the first entry. So the start of a columnstore database’s ZIP code record might look like this: 5, 94063, 20474, 38654… The “5” at the beginning means that the ZIP code data is stored in the fifth column in the rowstore database of customer names and addresses that the original data comes from. Columnstore databases ... Read More

Feed: Planet MySQL; Author: MinervaDB; This blog is aimed to help anyone who is interested in setting-up 3 node MariaDB Galera Cluster with MariaDB MaxScale for building highly available / reliable, fault-tolerant and self-healing MariaDB infrastructure operations.  We have not tried to explain MariaDB Galera Cluster and MariaDB MaxScale Architecture or internals in this post. MariaDB documentation on both MariaDB Galera Cluster and MariaDB MaxScale is neat and direct , You can read the same here – https://mariadb.com/kb/en/library/galera-cluster/   (MariaDB Galera Cluster) and https://mariadb.com/kb/en/mariadb-maxscale-20-setting-up-mariadb-maxscale/    (MariaDB MaxScale). If you are building maximum availability Database Infrastructure Operations on MariaDB stack, it’s worth investing ... Read More

Feed: Planet MySQL; Author: Frederic Descamps; If you just migrated to MySQL 8.0, you may have seen that the default authentication plugin has been changed to a more secure one: caching_sha2_password and I’ve already written some articles about it. Now let’s discover how Perl users can deal with MySQL 8.0. The driver to use MySQL with Perl is perl-DBD-MySQL. MySQL 8.0 is supported but the new authentication plugin might not be. This depends of the mysql library linked during compilation of the module. problem connecting to MySQL 8.0 The error you may encounter is the following: DBI connect('host=localhost','fred',...) failed: Authentication ... Read More