目錄
centos8已經發布了，下載了一個體驗一下，新安裝好的centos8默認網卡是沒有啓動的，安裝好後需要先配置網絡。在/etc/sysconfig/network-scripts目錄下存放着網卡的配置文件，文件名稱是ifcfg- 網卡名稱。
一 修改配置文件
設置網絡時首先打開配置文件，配置文件默認如下所示，如果使用dhcp自動獲取ip，只需將ONBOOT=no修改爲ONBOOT=no即可。
# 網卡配置文件按默認配置
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=e4987998-a4ce-4cef-96f5-a3106a97f5bf
DEVICE=ens33
ONBOOT=no #如果使用dhcp分配ip的話，只需要將這裏no改爲yes，然後重啓網絡服務就行如果需要配置靜態ip，則按照以下修改方法修改
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static #將dhcp修改爲stati表示使用靜態ip
DEFROUTE=yes
IPADDR=192.168.128.129 #設置IP地址
NETMASK=255.255.255.0 #設置子網掩碼
GATEWAY=192.168.128.1 #設置網關
DNS1=114.114.114.114 #設置dns
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=e4987998-a4ce-4cef-96f5-a3106a97f5bf
DEVICE=ens33
ONBOOT=yes #將no改爲yes二 重啓網絡服務
使用nmcli c reload命令重啓網絡服務，網絡這塊算是centos8改動較大的一塊了，nmcli命令的參數如下所示：
[hk@localhost network-scripts]$ nmcli -h
Usage: nmcli [OPTIONS] OBJECT { COMMAND | help }
OPTIONS
-o[verview] overview mode (hide default values)
-t[erse] terse output
-p[retty] pretty output
-m[ode] tabular|multiline output mode
-c[olors] auto|yes|no whether to use colors in output
-f[ields] <field1,field2,...>|all|common specify fields to output
-g[et-values] <field1,field2,...>|all|common shortcut for -m tabular -t -f
-e[scape] yes|no escape columns separators in values
-a[sk] ask for missing parameters
-s[how-secrets] allow displaying passwords
-w[ait] <seconds> set timeout waiting for finishing operations
-v[ersion] show program version
-h[elp] print this help
OBJECT
g[eneral] NetworkManager's general status and operations
n[etworking] overall networking control
r[adio] NetworkManager radio switches
c[onnection] NetworkManager's connections # 網絡管理一般使用 nmcli c
d[evice] devices managed by NetworkManager
a[gent] NetworkManager secret agent or polkit agent
m[onitor] monitor NetworkManager changes
[hk@localhost network-scripts]$
網絡管理一般使用 nmclli c，用法如下：
[hk@localhost network-scripts]$ nmcli c -h
Usage: nmcli connection { COMMAND | help }
COMMAND := { show | up | down | add | modify | clone | edit | delete | monitor | reload | load | import | export }
show [--active] [--order <order spec>]
show [--active] [id | uuid | path | apath] <ID> ...
up [[id | uuid | path] <ID>] [ifname <ifname>] [ap <BSSID>] [passwd-file <file with passwords>]
down [id | uuid | path | apath] <ID> ...
add COMMON_OPTIONS TYPE_SPECIFIC_OPTIONS SLAVE_OPTIONS IP_OPTIONS [-- ([+|-]<setting>.<property> <value>)+]
modify [--temporary] [id | uuid | path] <ID> ([+|-]<setting>.<property> <value>)+
clone [--temporary] [id | uuid | path ] <ID> <new name>
edit [id | uuid | path] <ID>
edit [type <new_con_type>] [con-name <new_con_name>]
delete [id | uuid | path] <ID>
monitor [id | uuid | path] <ID> ...
reload
load <filename> [ <filename>... ]
import [--temporary] type <type> file <file to import>
export [id | uuid | path] <ID> [<output file>]
[hk@localhost network-scripts]$