Puppet is a configuration Management tool, used for managing configuration of systems systematically. It keeps a historical record of state of systems properly. Puppet used pull methodology where nodes request configuration details from a server….
When working with web servers, and displaying contents, you may wish to restrict access to certain pages to only authenticated users. Which means one will require a password to view these restricted pages. Though there…
Google drive is a free cloud storage provided by Google where you can store files accessible from any where in the world as long as you have an internet connection. Google also provides Google Drive…
Install and start samba server: # yum install samba # service smb start # chkconfig smb on Add users and group: # useradd user01 # passwd user01 # useradd user02 # passwd user02 #…
This page gives basic information about Sudo users. The file used by sudo is /etc/sudoers Never use vi to open this file. Use the command “visudo” user1 ALL=/usr/sbin/useradd By adding this in sido file user1…
This page lists the procedure to be followed to create a CentOS 5 domU in Xen, without using virt-manager, or and other GUI tool. The first step is to install Xen on your host. This…
Netfilter : The actual filtering in a Linux box is done using Netfilter. Iptables : is the tool used to create this filters. Iptables maintain state-full firewall. Ipchains does not maintain state-full firewall The module…
An NIS system maintains and distributes a central directory of user and group information, hostnames, e-mail aliases and other text-based information in a network. Though not the core purpose, NIS can be used for centralized…
A network file system is a computer file system that supports sharing of files, printers, etc over a computer network. Package : nfs-utils.rpm Configuration file : /etc/exports Daemon : nfs Procedure to share a folder…
SSH is a network protocol. It allows data to be exchanged using a secure channel between two networked devices. Same protocol is used for: ssh sftp scp RPM packages required to rum ssh includes: Openssh.rpm…