Adding new Network Alias to a Network Card while bridging

Adding new Network Alias to a Network Card while bridging works good in Red Hat Enterprise Linux 6.2

Step 1: Copy the configuration file of bridge as follows:

#cp /etc/sysconfig/network-scripts/ifcfg-br0 /etc/sysconfig/network-scripts/ifcfg-br0:0

Step 2: Open the copied file and make the changes in IPADDR, DEVICE, NAME, PREFIX (refer the following entries)

#vim /etc/sysconfig/network-scripts/ifcfg-br0:0

DEVICE="br0:0"

NM_CONTROLLED="NO"

ONBOOT=yes

TYPE="Bridge"

IPV6INIT=no

NAME="System br0:0"

UUID=9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04

BOOTPROTO=none

IPADDR=192.168.250.250

PREFIX=24

GATEWAY=192.168.250.1

DEFROUTE=yes

IPV4_FAILURE_FATAL=yes

DNS1=192.168.250.1

DNS2=4.2.2.2

HWADDR=00:0C:41:22:8C:2F

DELAY="0"

Note: There is no change in UUID & HWADDR.

Step3: Restart the service or enable the particular device. (anyone of the following)

#ifup br0:0       or     #service network restart

Customize the Packages in Kickstart file

This is the part of kickstart file of RHEL 6.0

%packages --ignoremissing

@Desktop

@Sound and Video

@X Window System

%end

Anonymous FTP upload in Red Hat Enterprise Linux 6

This video explains how to do anonymous FTP upload in Redhat Enterprise Linux 6

Partition Encryption in Red Hat Enterprise Linux 6

This video explains how the encrypt the partition in the command mode of Red Hat Enterprise Linux 6.

Samba Server Configuration in Red Hat Enterprise Linux 6

This video explains about the basic samba configuration in Red Hat Enterprise Linux 6

NTP Server Configuration in RHEL 6

This video explains how to setup the local NTP server in Red Hat Enterprise Linux 6.

Client Side configuration:
Step 1: Set the ipaddress in the same range (say 9.0.0.21) & check up with ping command.
Step 2: #system-config-date
            Remove all and give 9.0.0.20 (NTP server ip) in NTP Servers box.
Step 3: #service ntpd restart
Step 4: #chkconfig ntpd on
Step 5: #ntpdate -b 9.0.0.20
Note: The time will be synchronized with the NTP server, the client system restart requires sometimes.

Pre requestis for Red Hat Certified Engineer — RHCE

An RHCE® certification is earned by a Red Hat® Certified System Administrator (RHCSA) who has demonstrated the knowledge, skill, and ability required of a senior system administrator responsible for Red Hat Enterprise Linux® systems. Professionals holding this certification have continually helped their companies with successful deployments and migrations.

Prerequisites

An RHCE is able to perform the following tasks (in addition to tasks associated with RHCSA):

    Configuration of static routes, packet filtering, and network address translation

    Setting kernel runtime parameters

    Building simple RPMs

    Configuring an iSCSI initiator

    Producing and delivering reports on system utilization

    Using shell scripting to automate system maintenance tasks

    Configuring system logging, including remote logging

    Configuring a system to provide networking services, including HTTP/HTTPS, FTP, NFS, SMB, SMTP,  SSH, and NTP

Hiring IT professionals who are certified as RHCEs allows many organizations to increase their ratio of servers to administrators, enabling them to be more cost effective in building out their infrastructures without needing to bring on additional resources.