How To Install And Configure Mysql Cluster On Centos

Feb 26,2021 by Manoj Yadav
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Objective of MySQL cluster is to enable high availability and reduced latency to databases that are compatible with MySQL. Clusters are appreciated to augment availability and overall performance unlike systems that involve single computers. By using NDB Cluster Storage, one can achieve shared nothing architecture to facilitate each node with independent disk and memory. The web hosting of this kind mitigate chances of one service impacting another.

MySQL cluster instantly achieves failover and node failure recovery and provides support for wide gamut of APIs such as JPA, Memcached, C++, among others. It is also optimized for concurrent writes.

Installation of MySQL cluster is executed with Auto Installer Python script for enabling a web based environment. This also necessitates confirming fulfillment of all host requirements as far as initial setup and requisite packages are concerned.

The three essential nodes or components for evaluation are management node, SQL data node, and SQL service node. In the initial stage the evaluation can be done with 4 hosts or machines for running components such as SQL service, SQL data, and management nodes. In order to ensure high availability installation of a single node or component for a single host or machine is essential.

By using community URL you can download cluster package to support any OS version or a specific platform. Once you have made host entries with relevant IP address, you need to open host file for updating hostname entry.

Before proceeding with installation, you need to run:

# yum -y install python python-paramiko python-crypto screen perl numactl-devel libaio

Now you are ready to download MySQL cluster after removing any past MySQL installations if any. Extracting download bundle should be done after you have downloaded MySQL cluster individually on every host.

Installation of rpm package can be done after you have extracted download bundle. Web based installation requires you to know IP of management host. After choosing management host you can run python auto installer with relevant commands.

After you have executed installation check during creation of test or sample database the database will reflect in different SQL host within NDB cluster.

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