Primary Profile
The primary profile settings are found in /etc
HostName
IP address
# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
IPADDR=10.10.10.10
NETMASK=255.0.0.0
GATEWAY=10.10.10.11
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=no
Red Hat 7 & 8 routes
# cat /etc/sysconfig/static-routes
eth0 net 10.10.0.0 netmask 255.255.0.0 gw 192.168.0.1
CentOS 3&4 RHEL 3&4 routes
# cat /etc/sysconfig/network-scripts/route-eth0
GATEWAY0=192.168.0.1
NETMASK0=255.0.0.0
ADDRESS0=10.10.0.0
DNS
# cat /etc/resolv.conf
nameserver 158.43.240.3
nameserver 158.43.240.4
Default & Alternative Network Profiles
CentOS and Red Hat RHEL support multiple network profiles
IP Address
# cat /etc/sysconfig/networking/profiles/default/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
IPADDR=10.10.10.10
NETMASK=255.0.0.0
GATEWAY=10.10.10.11
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=no
DNS
# cat /etc/sysconfig/networking/profiles/default/resolv.conf
nameserver 158.43.240.3
nameserver 158.43.240.4
NetworkCommands
REFERRERS
NetworkConfiguration
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