NetworkManager管理裝置與連線情況
阿新 • • 發佈:2018-11-01
二、nmcli管理裝置與連線情況
- 檢視裝置狀態
[root@localhost ~]# nmcli device
DEVICE TYPE STATE CONNECTION
virbr0 bridge connected virbr0
eno16777736 ethernet connected eno16777736
virbr0-nic ethernet connected virbr0-nic
lo loopback unmanaged --
[root@localhost ~]#
- 檢視指定裝置狀態
[[email protected] ~]# nmcli device show eno16777736
GENERAL.DEVICE: eno16777736
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 00:0C:29:69:1F:D8
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]: 192.168.1.4/24
IP4.GATEWAY: 192.168.1.1
IP4.DNS [1]: 202.101.172.35
IP4.DNS[2]: 8.8.8.8
IP6.ADDRESS[1]: fe80::20c:29ff:fe69:1fd8/64
IP6.GATEWAY: fe80::1
[[email protected] ~]#
- 檢視連結狀態
[root@localhost ~]# nmcli connection
add delete down edit help load modify reload show up
[root@localhost ~]# nmcli connection
NAME UUID TYPE DEVICE
virbr0-nic 7fb8f43e-926a-42a9-a205-cd6ef7033f3c 802-3-ethernet virbr0-nic
virbr0 72125c4c-417e-47ba-bd21-45d7162fb40e bridge virbr0
eno16777736 be3b17c4-48df-4513-aa1d-a653b7a57cc2 802-3-ethernet eno16777736
[root@localhost ~]#
- 查詢所有活動的連線
[[email protected] ~]# nmcli connection show --active
NAME UUID TYPE DEVICE
virbr0-nic 7fb8f43e-926a-42a9-a205-cd6ef7033f3c 802-3-ethernet virbr0-nic
virbr0 72125c4c-417e-47ba-bd21-45d7162fb40e bridge virbr0
eno16777736 be3b17c4-48df-4513-aa1d-a653b7a57cc2 802-3-ethernet eno16777736
[[email protected] ~]#
- 檢視指定ID連線的詳細情況
[root@localhost ~]# nmcli connection show eno16777736
使用nmcli建立新的連線(不是物理裝置)
- 定義一個名為ens33-dhcp的連線,配置動態IP地址,對應的裝置是eno16777736,設定開機自啟動,連線型別是乙太網,iPv4地址自動獲取
// 其實就是在/etc/sysconfig/network-scripts/下新增了一個ifcfg-ens33-dhcp的配置檔案
[root@localhost ~]# nmcli connection add con-name ens33-dhcp ifname eno16777736 autoconnect yes type ethernet
Connection 'ens33-dhcp' (e5edbcf2-b4b4-4922-9390-b8d67409e52c) successfully added.
[root@localhost ~]#
// 當想要將連線切換到ens33-dhcp時:
[root@localhost ~]# nmcli connection up ens33-dhcp
// 刪除連線eno16777736
[root@localhost ~]# nmcli connection delete ens33-dhcp
- 定義一個名為static的連線,配置靜態IP,掩碼,閘道器等
// 我們先新增一個網絡卡裝置:ens38
ens38: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:0c:29:69:1f:e2 txqueuelen 1000 (Ethernet)
// 設定名為ens34-static的靜態連線(BOOTPROTO=sataic需要在配置檔案中改),
[[email protected] ~]# nmcli connection add con-name ens34-static ifname ens38 autoconnect yes type ethernet gw4 192.168.1.1 ip4 192.168.1.7
Connection 'ens34-static' (02b15e6c-33d6-475f-b854-2a4fe2f39a60) successfully added.
[[email protected] ~]#
- 啟用static連線(預設連線不自動啟用,處於斷開狀態)
一般配置完成後就是自動啟用的,如果沒有啟用可以手動啟用
[root@localhost ~]# nmcli connection up ens34-static
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/12)
[root@localhost ~]# nmcli connection show
NAME UUID TYPE DEVICE
virbr0-nic 7fb8f43e-926a-42a9-a205-cd6ef7033f3c 802-3-ethernet virbr0-nic
virbr0 72125c4c-417e-47ba-bd21-45d7162fb40e bridge virbr0
eno16777736 be3b17c4-48df-4513-aa1d-a653b7a57cc2 802-3-ethernet eno16777736
ens34-static 02b15e6c-33d6-475f-b854-2a4fe2f39a60 802-3-ethernet ens38
ens33-dhcp e5edbcf2-b4b4-4922-9390-b8d67409e52c 802-3-ethernet --
[root@localhost ~]#
- 使用++nmcli++修改已有的網路連線屬性(這種方式修改後不用重啟網絡卡)
// 可以修改很多引數,下面只是顯示了,並沒有改。
[root@localhost ~]# nmcli connection modify ens34-static ipv
ipv4.addresses ipv4.ignore-auto-dns ipv6.addresses ipv6.ignore-auto-routes
ipv4.dhcp-client-id ipv4.ignore-auto-routes ipv6.dhcp-hostname ipv6.ip6-privacy
ipv4.dhcp-hostname ipv4.may-fail ipv6.dhcp-send-hostname ipv6.may-fail
ipv4.dhcp-send-hostname ipv4.method ipv6.dns ipv6.method
ipv4.dns ipv4.never-default ipv6.dns-search ipv6.never-default
ipv4.dns-search ipv4.route-metric ipv6.gateway ipv6.route-metric
ipv4.gateway ipv4.routes ipv6.ignore-auto-dns ipv6.routes
[root@localhost ~]#
//修改連線後重新載入下連線
[root@localhost ~]# nmcli connection down ens34-static && nmcli connection up ens34-static
Connection 'ens34-static' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/13)
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/14)
[root@localhost ~]#
- 新增連線方法總結
- 新增物理網絡卡
- 拷貝原有的配置檔名稱就是新的連線名
- 刪除配置檔案裡的UUID,NAME名稱,DEVCE裝置名稱,修改ip等等
- 在使用nmcli connection reload 重新載入配置檔案
- 啟用連線nmcli connection up [連線名]
- 當然我們可以不用拷貝原有連線的配置檔案這麼low的方式,你可以直接用上面教的nmcli connetion add 來實現新增新的連線
- 最後我們需要檢視修改的ip是否生效:ifconfig