RHEL 6 is built, and priced, for big shops | ITworld

RHEL 6 is built, and priced, for big shops | ITworld

About RHEL

Red Hat enterprise Linux is a Linux distribution produced by Red Hat



In past, Redhat  Linux was free and open source Linux distribution.
In 2004 it became a commercial Linux distribution under the name of  "Red Hat Enterprise Linux"


Red Hat Enterprise Linux is an enterprise platform well-suited for a broad range of applications across the IT infrastructure. 


After making it commercial, Red Hat started a new project for free community Linux called fedora.




So Red Hat is picking up stable fedora distribution which is tested OK by community and developing
Enterprise (commercial) Linux distribution.





Red Hat Linux 6.2                 Red Hat Linux 6.2E
Red Hat Linux 7.2                 Red Hat Enterprise Linux 2.1
Red Hat Linux 9                   Red Hat Enterprise Linux 3
Fedora Core 3                     Red Hat Enterprise Linux 4
Fedora Core 6                     Red Hat Enterprise Linux 5
Fedora 13                         Red Hat Enterprise Linux 6




There are some variants of red hat enterprise Linux :


In Red Hat Enterprise Linux 5 there are new editions that substitute former Red Hat Enterprise Linux 
Red Hat Enterprise Linux Advanced Platform (AS)
Red Hat Enterprise Linux ( ES) (limited to 2 CPU-s)
Red Hat Enterprise Linux Desktop with Workstation and Multi-OS option
Red Hat Enterprise Linux Desktop with Workstation option ( WS)
Red Hat Enterprise Linux Desktop with Multi-OS option
Red Hat Enterprise Linux Desktop ( Desktop)

red hat is also offering red hat certification program. This site is containing in depth information about rhel and other enterprise Linux distributions for server and workstation.

RHCE 6 Objactive

 

 

 

System Configuration and Management :

Route IP traffic and create static routes

Use iptables to implement packet filtering and configure network address translation (NAT)

Use /proc/sys and sysctl to modify and set kernel run-time parameters

Configure system to authenticate using Kerberos

Build a simple RPM that packages a single file

Configure a system as an iSCSI initiator that persistently mounts an iSCSI target

Produce and deliver reports on system utilization (processor, memory, disk, and network)

Use shell scripting to automate system maintenance tasks

Configure a system to log to a remote system

Configure a system to accept logging from a remote system

Network Services:

Network services are an important subset of the exam objectives.

 

Install the packages needed to provide the service

Configure SELinux to support the service

Configure the service to start when the system is booted

Configure the service for basic operation

Configure host-based and user-based security for the service

HTTP/HTTPS

Configure a virtual host

Configure private directories

Deploy a basic CGI application

Configure group-managed content

DNS

Configure a caching-only name server

Configure a caching-only name server to forward DNS queries

Note: Candidates are not expected to configure master or slave name servers

FTP

Configure anonymous-only download

NFS

Provide network shares to specific clients

Provide network shares suitable for group collaboration

SMB

Provide network shares to specific clients

Provide network shares suitable for group collaboration

SMTP

Configure a mail transfer agent (MTA) to accept inbound email from other systems

Configure an MTA to forward (relay) email through a smart host

SSH

Configure key-based authentication

Configure additional options described in documentation

NTP

Synchronize time using other NTP peers

RHCSA Objactive

 Exam objective for RHCSA (pre-requestive for RHCE)

 

 

 

 

Understand and Use Essential Tools

• Access a shell prompt and issue commands with correct syntax
• Use input-output redirection (>, >>, |, 2>, etc.)
• Use grep and regular expressions to analyze text
• Access remote systems using ssh and VNC
• Log in and switch users in multi-user runlevels
• Archive, compress, unpack and uncompress files using tar, star, gzip, and bzip2
• Create and edit text files
• Create, delete, copy and move files and directories
• Create hard and soft links
• List, set and change standard ugo/rwx permissions
• Locate, read and use system documentation including man, info, and files in /usr/share/doc . 
  [Note: Red Hat may use applications during the exam that are not included in Red Hat Enterprise Linux for the purpose of evaluating candidate's abilities to meet this objective.]

Operate Running Systems

• Boot, reboot, and shut down a system normally
• Boot systems into different runlevels manually
• Use single-user mode to gain access to a system
• Identify CPU/memory intensive processes, adjust process priority with renice, and kill processes
• Locate and interpret system log files
• Access a virtual machine's console
• Start and stop virtual machines
• Start, stop and check the status of network services

Configure Local Storage

• List, create, delete and set partition type for primary, extended, and logical partitions
• Create and remove physical volumes, assign physical volumes to volume groups, create and delete logical volumes
• Create and configure LUKS-encrypted partitions and logical volumes to prompt for password and mount a decrypted file system at boot
• Configure systems to mount file systems at boot by Universally Unique ID (UUID) or label
• Add new partitions, logical volumes and swap to a system non-destructively

Create and Configure File Systems

• Create, mount, unmount and use ext2, ext3 and ext4 file systems
• Mount, unmount and use LUKS-encrypted file systems
• Mount and unmount CIFS and NFS network file systems
• Configure systems to mount ext4, LUKS-encrypted and network file systems automatically
• Extend existing unencrypted ext4-formatted logical volumes
• Create and configure set-GID directories for collaboration
• Create and manage Access Control Lists (ACLs)
• Diagnose and correct file permission problems

Deploy, Configure and Maintain Systems

• Configure networking and hostname resolution statically or dynamically
• Schedule tasks using cron
• Configure systems to boot into a specific runlevel automatically
• Install Red Hat Enterprise Linux automatically using Kickstart
• Configure a physical machine to host virtual guests
• Install Red Hat Enterprise Linux systems as virtual guests
• Configure systems to launch virtual machines at boot
• Configure network services to start automatically at boot
• Configure a system to run a default configuration HTTP server
• Configure a system to run a default configuration FTP server
• Install and update software packages from Red Hat Network, a remote repository, or from the local filesystem
• Update the kernel package appropriately to ensure a bootable system
• Modify the system bootloader

Manage Users and Groups

• Create, delete, and modify local user accounts
• Change passwords and adjust password aging for local user accounts
• Create, delete and modify local groups and group memberships
• Configure a system to use an existing LDAP directory service for user and group information

Manage Security

• Configure firewall settings using system-config-firewall or iptables
• Set enforcing and permissive modes for SELinux
• List and identify SELinux file and process context
• Restore default file contexts
• Use boolean settings to modify system SELinux settings
• Diagnose and address routine SELinux policy violations

Certifications offered by Redhat

Certifications offered by Redhat

Redhat Certified System Administrator (RHCSA)

Red Hat Certified Engineer (RHCE)

JBoss Certified Application Administrator (JBCAA)

Red Hat Certified Virtualization Administrator (RHCVA)

Red Hat Certificates of Expertise

Red Hat Certified Security Specialist (RHCSS)

Red Hat Certified Datacenter Specialist (RHCDS)

Red Hat Certified Architect (RHCA)

Download link for Redhat enterprise linux server version 6

RHEL 6 Beta2 is available for download from Redhat's web site

ftp://ftp.redhat.com/pub/redhat/rhel/beta/6/i386/iso/RHEL6.0-20100414.0-AP-i386-DVD1.iso

Red hat Releases RHEL6

Redhat released Version6 of its redhat enterprise linux distribution.


RHEL6 has more than 2000 packages, the copmpany calculates thats it's taken 600 man years of RHEL6 to get  here.


RHEL6  Beta is available from april 21st 2010 for public download.


RHEL6 have some major implementation in following areas :

• Comprehensive power management capabilities
• Performance enhancements
• Scalability enhancements
• New security features
• Resource management
• Virtualization
• Storage
• File system
• Reliability, availability and serviceability (RAS)
• Compiler and tools
• Desktop

Redhat is a Commercial Linux Distribution, There is Redhat enterprise linux fork/clone called CENTOS