Network Settings

Network Settings 2015/01/07

[1]	Set static IP address to the server. Replace the interface name "eno16777736" for your own environment's one.

# set hostname [root@localhost ~]#  hostnamectl set-hostname dlp.srv.world # display devices [root@localhost ~]#  nmcli d  DEVICE TYPE STATE CONNECTION eno16777736 ethernet connected eno16777736 lo loopback unmanaged -- # set IPv4 address ⇒ nmcli *** [IP address] [root@localhost ~]#  nmcli c modify eno16777736 ipv4.addresses 10.0.0.30/24  # set default gateway [root@localhost ~]#  nmcli c modify eno16777736 ipv4.gateway 10.0.0.1  # set DNS [root@localhost ~]#  nmcli c modify eno16777736 ipv4.dns 10.0.0.1  # set manual for static setting (it's "auto" for DHCP) [root@localhost ~]#  nmcli c modify eno16777736 ipv4.method manual  # restart the interface and reload the settings [root@localhost ~]#  nmcli c down eno16777736; nmcli c up eno16777736  Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/1) # show settings [root@localhost ~]#  nmcli d show eno16777736  GENERAL.DEVICE: eno16777736 GENERAL.TYPE: ethernet GENERAL.HWADDR: 00:0C:29:CD:9C:2D GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: eno16777736 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/0 WIRED-PROPERTIES.CARRIER: on IP4.ADDRESS[1]: ip = 10.0.0.30/24, gw = 10.0.0.1 IP4.DNS[1]: 10.0.0.1 IP6.ADDRESS[1]: ip = fe80::20c:29ff:fecd:9c2d/64, gw = :: # show status [root@localhost ~]#  ip addr show  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:cd:9c:2d brd ff:ff:ff:ff:ff:ff inet 10.0.0.30/24 brd 10.0.0.255 scope global eno16777736 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fecd:9c2d/64 scope link valid_lft forever preferred_lft forever

[2]	Disable IPv6 if you do not need it.

[root@localhost ~]#  vi /etc/default/grub # line 6: add GRUB_CMDLINE_LINUX=" ipv6.disable=1 rd.lvm.lv=fedora-server/root..... # apply changing [root@localhost ~]#  grub2-mkconfig -o /boot/grub2/grub.cfg  [root@localhost ~]#  reboot

[3]	If you'd like to use the network interface name as ethX, configure like follows.

[root@dlp ~]#  vi /etc/default/grub # line 6: add GRUB_CMDLINE_LINUX=" net.ifnames=0 rd.lvm.lv=fedora/swap rd.md=0..... # apply changing [root@dlp ~]#  grub2-mkconfig -o /boot/grub2/grub.cfg  [root@dlp ~]#  reboot