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Initial Settings : Network Settings

[1]. Set static IP address to the server.

( Replace the interface name [ens2] to your own one because it's not the same on any System )

# if you did not set Host Name during installation, set it like follows

[root@localhost ~]# hostnamectl set-hostname dlp.srv.world

# display devices

[root@localhost ~]# nmcli device

DEVICE  TYPE      STATE      CONNECTION

ens2    ethernet  connected  ens2

lo      loopback  unmanaged  --


# set IPv4 address

[root@localhost ~]# nmcli connection modify ens2 ipv4.addresses 10.0.0.30/24

# set gateway

[root@localhost ~]# nmcli connection modify ens2 ipv4.gateway 10.0.0.1

# set DNS

[root@localhost ~]# nmcli connection modify ens2 ipv4.dns 10.0.0.1

# set manual for static setting (it's [auto] for DHCP)

[root@localhost ~]# nmcli connection modify ens2 ipv4.method manual

# restart the interface to reload settings

[root@localhost ~]# nmcli connection down ens2; nmcli connection up ens2

Connection 'ens2' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/1)

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2)


# show settings

[root@localhost ~]# nmcli device show ens2

GENERAL.DEVICE:                         ens2

GENERAL.TYPE:                           ethernet

GENERAL.HWADDR:                         52:54:00:D0:8F:0B

GENERAL.MTU:                            1500

GENERAL.STATE:                          100 (connected)

GENERAL.CONNECTION:                     ens2

GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveC>

WIRED-PROPERTIES.CARRIER:               on

IP4.ADDRESS[1]:                         10.0.0.30/24

IP4.GATEWAY:                            10.0.0.1

IP4.ROUTE[1]:                           dst = 10.0.0.0/24, nh = 0.0.0.0, mt = 1>

IP4.ROUTE[2]:                           dst = 0.0.0.0/0, nh = 10.0.0.1, mt = 100

IP4.DNS[1]:                             10.0.0.10

IP6.ADDRESS[1]:                         fe80::5054:ff:fed0:8f0b/64

IP6.GATEWAY:                            --

IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 100

IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, tabl>


# show state

[root@localhost ~]# ip addr show

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

    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: ens2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000

    link/ether 52:54:00:d0:8f:0b brd ff:ff:ff:ff:ff:ff

    inet 10.0.0.30/24 brd 10.0.0.255 scope global noprefixroute ens2

       valid_lft forever preferred_lft forever

    inet6 fe80::5054:ff:fed0:8f0b/64 scope link noprefixroute

       valid_lft forever preferred_lft forever

[2]. If you don't need IPv6, it's possible to disable it like follows.

[root@localhost ~]# vi /etc/default/grub

# line 7: add

GRUB_CMDLINE_LINUX="ipv6.disable=1 resume=/dev/mapper/fedora-swap.....

# apply changes

[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg

Generating grub configuration file ...

done

[root@localhost ~]# reboot

[root@localhost ~]# ip addr show

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

    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

2: ens2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000

    link/ether 52:54:00:d0:8f:0b brd ff:ff:ff:ff:ff:ff

    inet 10.0.0.30/24 brd 10.0.0.255 scope global noprefixroute ens2

       valid_lft forever preferred_lft forever 

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