Puppet is a tool designed to manage the configuration of Unix-like and Microsoft Windows systems declaratively. The user describes system resources and their state, either using Puppet’s declarative language or a Ruby DSL (domain specific language). This information is stored in files called “Puppet manifests”. Puppet discovers the system information via a utility called Facter, […]
Nagios is an open source software that can be used for network and infrastructure monitoring. Nagios will monitor servers, switches, applications and services. It alerts the System Administrator when something went wrong and also alerts back when the issues has been rectified. With Nagios you can: Monitor your entire IT infrastructure.; Identify problems before they […]
This tutorial describes how to setup a local Yum repository on CentOS 7 system. Also, the same steps should work on RHEL and Scientific Linux 7 systems too. If you have to install software, security updates and fixes often in multiple systems in your local network, then having a local repository is an efficient way. […]
From the Apache Tomcat home page, Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed under the Java Community Process. Apache Tomcat is developed in an open and participatory environment and released under the Apache License version 2. Apache […]
vsftpd (Very Secure File Transport Protocol Daemon) is a secure, fast FTP server for Unix/Linux systems. In this how-to article, let us see how to setup a basic FTP server on CentOS 7. However, this procedure might work well on RHEL CentOS, Scientific Linux 7 version too. My testbox server hostname and IP Address are […]
Question: How to switch from Dynamic to static in my CentOS 7? Answer: Before to convert from dynmic to static, please make an copy of resolv.conf under etc folder. cp /etc/resolv.conf /etc/resolv.conf.backup 1 – Please edit “/etc/sysconfig/network-scripts/ifcfg-enp0s3″. TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=no IPADDR=10.1.1.200 IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no NAME=enp...
DNS, stands for Domain Name System, translates hostnames or URLs into IP addresses. For example, if we type www.unixmen.com in browser, the DNS server translates the domain name into its associated ip address. Since the IP addresses are hard to remember all time, DNS servers are used to translate the hostnames like www.unixmen.com to 173.xxx.xx.xxx. […]