RHEL - CentOS

RHEL and CentOS Guides

Howto guides for the installation and configuring of Red Hat based Linux systems.




Howto Install RHEL


Installation guide for the install of RHEL - Red Hat Enterprise Linux.
RHEL Installation Guides



Howto Install CentOS


Installation guide for the install of CentOS - Community Enterprise Operating System.
CentOS Installation Guides



Creating ssh login banner pages


Howto guide for creating custom login banner pages.
RHEL/CentOS Custom ssh Login Banner Pages



An introduction to the XFS file system


XFS is now the default file system on all RHEL 7 Based systems. An introduction to using the XFS file system.
RHEL/CentOS XFS File System Management



Upgrading RHEL/CentOS Servers


Howto guide for upgrading RHEL and CentOS Linux using the new upgrade tool - redhat-upgrade-tool. Upgrading from RHEL 6 and CentOS 6 to RHEL/CentOS 7 using "pre-upgrade assistant tool.
Upgrading RHEL and CentOS Servers



Managing systemd Targets - Run Levels


Howto control runlevels and targets using systemd.
Systemd Runlevels - Targets



journalctl Command Examples


Howto display and query system log files using journalctl. Howto Configure persistency on journal files.
Journalctl Command Examples



Creating Repositories in RHEL and CentOS


Howto create custom repositories on RHEL and CentOS based Linux systems.
Creating Custom Repositories



Configuring Networks Settings on RHEL 7 and CentOS 7


Howto configure static IP addresses on RHEL and CentOS. Configuring network interfaces. Configuring Hostnames, adding static routes. Starting and Stopping network interfaces. Basic Network commands for RHEL and CentOS systems.
Network Configuration



RHEL 7 and CentOS 7 reset root password


Howto reset a root password on a RHEL 7 or CentOS 7 system.
Reset root Password on RHEL 7 and CentOS 7



RHEL 6 and CentOS6 reset root password


Howto reset a root password on RHEL 6 or CentOS 6 system.
Reset root Password on RHEL 6 and CentOS 6



Red Hat Package Manager (RPM)


RPM - Howto to install, remove or update software/packages on RHEL and CentOS Linux Systems.
RPM Package Management



YUM Package Management


YUM - Guide to installing and updating software on RHEL and CentOS Linux Systems using the yum package manager tool.
YUM Package Management



LVM Command guide for RHEL/CentOS systems


Basic LVM Commands for managing file systems and disk on RHEL/CentOS Linux systems.
LVM Command



Log Files


Linux Log file locations.
Linux Log Files



Log Rotation


Howto rotate log files on a RHEL/CentOS Linux systems.
Log File Rotation



Installing RHEL and CentOS using Kick Start


An introduction to using Kickstart. Automating the installation of Red Hat Enterprise Linux.
Kickstart Introduction




Iptables


Managing firewalls on RHEL 6 and CentOS 6 systems using "iptables".
Iptables Command Guide



Firewalld and RHEL 7


An introduction to firewalld. Basic firewall configuration on RHEL 7 systems.
firewalld



firewall-cmd


Howto manage firewall settings on RHEL 7 and CentOS 7 systems using the command line tool "firewall-cmd".
firewall-cmd



firewall-config


Managing firewalls on RHEL 7 and CentOS 7 using a Graphical Interface (GUI).
firewall-config



Install LAMP on RHEL 7.x and CentOS 7.x Servers


Howto guide for installing a LAMP stack on RHEL 7.x systems.
LAMP



Install LAMP on RHEL 6.x and CentOS 6.x Servers


Howto guide for installing a LAMP stack on RHEL 6.x systems.
LAMP



Install an Apache Web Server on RHEL/CentOS systems


Howto guide for the installation of an Apache Web Server on RHEL and CentOS servers.
Apache