I am not from system admin background, however due to some reasons I need to set up a cluster of some 3-4 physical servers, each running CentOS, 6.8 version.
I downloaded the centOS 6.8 version iso minimum and did the installation from a USB.
Now, I need to configure the network, and for that I referred to the directory:
/etc/sysconfig/network-scripts; and in particular ifcfg-eth0
In this file, some of the contents which were present:
HWADDRESS=AA:BB:CC:DD:EE:FF (not putting the real entries).
I have following doubts.
Q1) Does HWADDRESS in ifcfg-eth0 represent the real MAC address of the Ethernet card?
Q2) what does ifcfg-eth0 represent? Is it Ehernet card? (I assume because of 'e').
Q3) For wireless, would it be ifcfg-wlan0?
Can anyone help understand this?