Category Archives: Linux FAQ

Where is LVM GUI in CentOS 7?

If you are coming from old CentO 4/5/6 exprience, then you will notice that system-config-lvm is no longer available  in Centos 7. From RedHat documentation regarding LVM in CentOS 7– system-config-lvm The system-config-lvm tool has been deprecated. Management of logical volumes can be performed via the gnome-disk-util or the lvm tools.

How to install httpd 2.4 rpm on CentOS 6

With the new release of Apache httpd 2.4, its highly recommended to upgrade the Apache httpd on your server. Here I will demo you how to install Apache httpd 2.4 through RPM on CentOS 6. The Software Collections (SCL) repository comes handy, install centos-release-scl repo package available in CentOS repository:

Install the httpd 2.4:… Read More »

What’s the difference between SSL and TLS?

Features SSL TLS Definition Secure Sockets Layer (SSL) is a cryptographic protocol that enables secure communications over the Internet. Transport Layer Security (TLS) is the successor to SSL. History SSL was originally developed by Netscape and released as SSL 2.0 in 1995. Improved SSL 3.0 was released in 1996. TLS 1.0 was defined in RFC… Read More »

mii-tool and ethtool – Which one is better?

My data center was connected on GbPS network but while doing mii-tool and ethtool, i found the different output:

Later i found that mii-tool is deprecated, the output for ethtool is correct. I noticed that mii-tool can only report up to 100MBit. Another way is to check using dmesg:

 

How to disable SSL on Webmin

Webmin is a web-based interface for system administration for nix OS. Using its web based interface, you can manage user accounts, Apache, DNS, file sharing, firewall and much more. Webmin removes the need to manually edit Unix configuration files like /etc/passwd and provide great web interface. Webmin uses Miniserv as web server for HTTP service.… Read More »

Difference between rsyslogd and syslogd

Question: What is the difference between rsyslogd and syslogd? Answer: The short answer is rsyslogd is an extension to syslogd. From rsyslogd man pages – rsyslogd  is reliable and extended syslogd. rsyslogd uses enhanced configuration file than syslogd. You should continue with rsyslogd. For long  answer, read this – http://askubuntu.com/questions/55435/difference-between-rsyslogd-and-syslogd