Network Management
Network information
$ ip a s ens192
2: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:50:56:0b:fa:af brd ff:ff:ff:ff:ff:ff
inet 5.135.236.224/32 brd 5.135.236.224 scope global ens192
valid_lft forever preferred_lft forever
ip -s(tatistics) link show ens192
ip r(oute)
ping -c3 google.com
traceroute google.com
tracepath google.com
ss -ta
Network Manager
# nmcli c s
NAME UUID TYPE DEVICE
System ens192 757d582e-22b3-4514-91df-63e29a49a388 802-3-ethernet ens192
System ens224 0a0c153f-47a4-4d23-81f0-d588b1ec1418 802-3-ethernet ens224
# nmcli c show "System ens192"
connection.id: System ens192
connection.uuid: 757d582e-22b3-4514-91df-63e29a49a388
connection.interface-name: ens192
connection.type: 802-3-ethernet
connection.autoconnect: yes
connection.timestamp: 1460972356
# nmcli d s
DEVICE TYPE STATE CONNECTION
ens192 ethernet connected System ens192
ens224 ethernet connected System ens224
ens256 ethernet disconnected --
lo loopback unmanaged --
# nmcli d show ens192
GENERAL.DEVICE: ens192
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 00:0C:29:3A:E6:77
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.CONNECTION: System ens192
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/0
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: ip = 192.168.0.1/24, gw = 0.0.0.0
IP4.DNS[1]: 213.186.33.99
IP4.DOMAIN[1]: example.org
IP6.ADDRESS[1]: ip = fe80::20c:29ff:fe3a:e677/64, gw = ::
nmcli c s
ip a show ens256
# hostname
server01.intranet
hostnamectl set-hostname server02.intranet
hostnamectl status
# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.100 server01.intranet server01
# cat /etc/resolv.conf
# Generated by NetworkManager
domain intranet
search intranet intranet.
nameserver 213.186.33.99
# nmcli con mod statictest ipv4.dns 10.10.10.254
# nmcli con down statictest
# nmcli con up statictest
# cat /etc/resolv.conf
# Generated by NetworkManager
domain example.org
search example.org example.org.
nameserver 213.186.33.99
nameserver 10.10.10.254