How To Install Webmin and Usermin Via The YUM Package Manager On CentOS 6.3

Synopsis:

How To Install Webmin and Usermin via the YUM Package Manager On CentOS 6.3 x64.

Assumptions and Prerequisites:

• Server IP Address: 192.168.1.11.
• OS: CentOS 6.3 x64
• Server Name: tyrion
• Firewall (IPTables) is disabled.
• YUM Repository EPEL has already been added. 
• SELinux is disabled.
• Text Editor: Nano

Step-by-Step Instructions:

1. Create the Webmin YUM Repo File: /etc/yum.repos.d/webmin.repo with the following configurations and save it.

[Webmin]
name=Webmin Distribution Neutral
#baseurl=http://download.webmin.com/download/yum
mirrorlist=http://download.webmin.com/download/yum/mirrorlist
enabled=1

2. Import GPG Key from the webmin website.
# rpm --import http://www.webmin.com/jcameron-key.asc

Webmin:

1. Install the required perl module.
# yum -y install perl-Net-SSLeay

2. Install Webmin via YUM.
# yum -y install webmin

3. Edit /etc/webmin/miniserv.conf and add the following line at the end of the file to allow users only from the LAN to be able to login to Webmin.

allow=127.0.0.1 192.168.1.0/24

4. Restart the Webmin service.
# /etc/rc.d/init.d/webmin restart

Usermin:

1. Install the required perl module.
# yum --enablerepo=epel -y install perl-Net-SSLeay perl-Authen-PAM

2. Install Usermin via YUM.
# yum -y install usermin

3. Edit /etc/usermin/miniserv.conf and add the following lines at the end of the file to allow users only from the LAN to be able to login to Webmin.

allow=127.0.0.1 192.168.1.0/24
denyusers=root


4. Restart the Usermin service.
# /etc/rc.d/init.d/usermin restart

Conclusion:

Webmin:

Open browser and go to https://192.168.1.11:10000 and login as 'root'.

If you have DNS configured, then https://tyrion:10000 will also work in the browser. And if you are on the same machine, then https://localhost:10000 will also work in the browser.

Usermin: 

Open browser and go to https://192.168.1.11:20000 and login as any user except root because root user has been disabled for usermin.


If you have DNS configured, then https://tyrion:20000 will also work in the browser. And if you are on the same machine, then https://localhost:20000 will also work in the browser.

How To Add Additional YUM Repositories In CentOS 6.3

Synopsis:

This is a tutorial on how to add 2 additional YUM repositories, RPMForge and EPEL on CentOS 6.3 x64.

Assumptions and Prerequisites: 

• OS: CentOS 6.3 x64.
• Text Editor: vi
• Network is configured and server has Internet access.
• Server Location: Melbourne, Australia

Step-by-Step Instructions:

RPMForge:

1. Import GPG Key for the RPMForge package.

# rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

2. Verify RPM package with GPG Key.

# rpm -K http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm

3. Install RPM package for RPMForge YUM repository.

# rpm -i http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm

EPEL:

1. Import GPG Key for the EPEL package.

# rpm --import  http://mirror.optus.net/epel/RPM-GPG-KEY-EPEL-6

2. Verify RPM package with GPG Key.

# rpm -K http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-7.noarch.rpm

3. Install RPM package for EPEL YUM repository.

# rpm -i http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-7.noarch.rpm

Conclusion:

After adding the RPMForge and EPEL YUM Repositories, you can install packages such as "htop" and "nano" via the YUM Package manager.

In order to add the EPEL and RPMForge Repositories for the x86(32 bit), you have to locate and install the 32 bit version from their respective mirrors.