How To Configure A High Available Load-balancer With HAProxy And Keepalived
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How To Configure A High Available Load-balancer With HAProxy And Keepalived

This tutorial explains how to set up a two-node load balancer with HAProxy and keepalived on CentOS 7.…

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How To Setup PostgreSQL Replication On CentOS
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How To Setup PostgreSQL Replication On CentOS

Nowadays, services can’t stop, and is system’s administratos reponsability keep applications, services and servers on…

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How To Configure FreeIPA server On CentOS 7
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How To Configure FreeIPA server On CentOS 7

FreeIPA stands for Free Identity Policy Audit. FreeIPA is a solution for managing users, groups, hosts, services, and much, much…

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Linux Troubleshooting: How To Keep A Process Running After Putty Or SSH Session Closed?
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Linux Troubleshooting: How To Keep A Process Running After Putty Or SSH Session Closed?

Mostly, I use SSH command to connect to my remote server. Unfortunately, today the power…

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Linux Troubleshooting: How To Fix “Existing lock /var/run/yum.pid: another copy is running as pid” Error On CentOS 7
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Linux Troubleshooting: How To Fix “Existing lock /var/run/yum.pid: another copy is running as pid” Error On CentOS 7

Today we will be discussing how to fix a simple error namely “Existing lock /var/run/yum.pid:…

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How To Install Eclipse Luna IDE On CentOS 7 / RHEL 7
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How To Install Eclipse Luna IDE On CentOS 7 / RHEL 7

Introduction According to the Wikipedia, In computer programming, Eclipse is an integrated development environment (IDE). It contains a base workspace and an…

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Linux Troubleshooting: How To Fix ‘lsb_release’ Command Not Found In CentOS?
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Linux Troubleshooting: How To Fix ‘lsb_release’ Command Not Found In CentOS?

Recently, I came through an error called “You must install lsb_release binary before launching this…

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Makagiga – A Free, Cross-platform To-do Manager, Notepad, And RSS Reader
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Makagiga – A Free, Cross-platform To-do Manager, Notepad, And RSS Reader

Introduction Makagiga is a free, cross-platform software to do various tasks such as to-do listing,…

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How To Install Websvn In CentOS 7
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How To Install Websvn In CentOS 7

WebSVN offers a view onto your subversion repositories that’s been designed to reflect the Subversion…

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Installing PostgreSQL 9.4 And phpPgAdmin In CentOS 7/6.5/6.4
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Installing PostgreSQL 9.4 And phpPgAdmin In CentOS 7/6.5/6.4

Introduction PostgreSQL is a powerful, open-source object-relational database system. It runs under all major operating…

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Installing OpenNMS Network Monitoring And Management Platform On CentOS 7
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Installing OpenNMS Network Monitoring And Management Platform On CentOS 7

Introduction OpenNMS is a free, Open Source, and world’s first enterprise grade network monitoring system…

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Install MongoDB On RHEL, CentOS, Fedora, Amazon Linux
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Install MongoDB On RHEL, CentOS, Fedora, Amazon Linux

MongoDB is a powerful, flexible and scalable general-purpose database. It is an agile database that…

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Install And Configure Nagios 4 On CentOS 7
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Install And Configure Nagios 4 On CentOS 7

Introduction Nagios is an open source software that can be used for network and infrastructure…

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Install GlusterFS Server And Client On CentOS 7
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Install GlusterFS Server And Client On CentOS 7

GlusterFS aggregates various storage servers over Ethernet or Infiniband RDMA interconnect into one large parallel network file system. It is…

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Install RepoForge (RPMForge) Repository On RHEL, CentOS, Scientific Linux 7/6.x/5.x/4.x
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Install RepoForge (RPMForge) Repository On RHEL, CentOS, Scientific Linux 7/6.x/5.x/4.x

Like EPEL, REMI, RPM Fusion repositories, RepoForge, formerly known as RPMForge, is a third party…

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How To Install OpenVPN On CentOS 7
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How To Install OpenVPN On CentOS 7

Security is most important aspect in internet. Outsiders can monitor internet traffic between your computer…

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How To Setup MariaDB Galera Cluster 10.0 On CentOS
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How To Setup MariaDB Galera Cluster 10.0 On CentOS

MariaDB is a relational database management system (RDBMS) and  MariaDB Galera Cluster is a synchronous multi-master cluster…

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How To Migrate From MySQL To MariaDB On Linux
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How To Migrate From MySQL To MariaDB On Linux

Why should I migrate from MySQL to MariaDB? The answer is very simple. MariaDb is…

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