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CentOS 8 网卡命令变化

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发表于 2020-9-7 12:05:07 | 显示全部楼层 |阅读模式
CentOS 8 网卡命令变化
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6 `6 p1 ?  k; Q  @; c0 u修改网卡配置文件:# U  ]' [- g9 ?1 S# `* l# S
vi ifcfg-enp9s0f0+ a0 w# m+ n; ?. H
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- ~! b1 c2 U7 q8 Y& zcentos8启动网卡服务的命令有所变化:- ?+ G  s2 u# B' Z% y0 v  [" S7 q
不在使用systemctl restart network.service命令。1 H# I1 a; {3 k2 K7 b2 N; u; {

- L+ L% c/ Q5 l- ?使用如下命令:, F) _- n) I8 M% c  q( q3 r
nmcli connection up enp9s0f0
$ [( g( }! G) o1 ]5 m
" r* W6 l( x* {6 a7 K" v[root@localhost ~]# ip addr
: D+ @$ h" N4 o* w" S& }1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
) f0 O3 Z+ j0 S" }: }    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00) F) R+ D- ]# _
    inet 127.0.0.1/8 scope host lo
4 ~* t8 j$ C" f0 s4 {$ Q) J/ K: n( ^       valid_lft forever preferred_lft forever
6 E& J- n% q9 d7 r9 o    inet6 ::1/128 scope host
2 k' X( f* Q! p2 S9 z1 q       valid_lft forever preferred_lft forever8 O) C- D6 S8 P6 I0 e
2: enp7s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
& Q4 }0 A; o0 ~. _( o* y    link/ether 00:e0:4c:69:1b:e0 brd ff:ff:ff:ff:ff:ff' D8 D6 m, T" P1 ~! K0 B
3: enp8s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
/ g  q  e, n; V& m    link/ether 00:e0:4c:69:1b:e1 brd ff:ff:ff:ff:ff:ff1 }" H5 l% T2 t6 b) V
4: enp9s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
+ G8 ?5 u6 m6 k9 q- p" ^6 c* Z    link/ether 60:eb:69:ed:78:98 brd ff:ff:ff:ff:ff:ff( r5 q. G- u2 C1 r
    inet 192.168.7.10/24 brd 192.168.7.255 scope global dynamic noprefixroute enp9s0f0
% c% X! b6 M8 I       valid_lft 6720sec preferred_lft 6720sec
# f, K! ~0 \" D6 J    inet6 fe80::691e:3557:301a:56b8/64 scope link noprefixroute
  C  j* b/ q6 U6 Q" }: @       valid_lft forever preferred_lft forever
( D6 V' _& }  \$ S5: enp9s0f1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 10009 h. ^7 T: X. m6 T+ e
    link/ether 60:eb:69:ed:78:99 brd ff:ff:ff:ff:ff:ff# A5 Q. r$ W( H& n2 y

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 楼主| 发表于 2020-9-21 21:01:14 | 显示全部楼层
查看网卡信息% Y3 a3 L( x. u5 \

) D) V# T8 T. O/ T! Z/ ]6 n# nmcli connection& f: Q, j' m; \" b- a( z  i% C

% g4 s. V7 E9 J" W1 U# nmcli con show3 l5 _' H" S# }9 o6 l6 C

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  ?7 z( V( Y0 G$ c; u6 y2 u; E 显示具体的网络接口信息
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8 i+ K% F8 C" z$ L# nmcli connection show eth0
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3 S% b( S6 S/ d# V  T3 G+ @) n! b1 m8 J显示所有设配状态1 U- O/ J9 w; |7 ^! d

4 j0 T" C# o4 P3 D) f% J2 ]; f( _# nmcli device status
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! m1 d2 U5 `- s修改配置文件执行生效
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# systemctl restart network/ U, Z( ?, R6 b5 Y

0 P) U& P* D" C; X# nmcli connection reload
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5 E6 R: r- O4 l! k. \; ^显示所有活动连接
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1 E/ }/ O  @* l# nmcli connection show --active
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删除一个网卡连接
% |/ W+ R; O* m: Q7 }# f  K7 a* R6 o+ I
# nmcli connection delete eth0   }5 P' l& f* x4 X3 N

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添加一个网卡连接
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, B3 v1 k) `2 j5 t/ \1 n3 s) k; [# nmcli connection add type ethernet con-name eth0 ifname eno33554992
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网络接口的启用与停用:
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) m, ^" _7 j7 ?8 \停用:
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2 R/ u7 C; a3 n& G6 X- X; o. W) V# nmcli connection down eth0
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启用:
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3 m$ ^7 k. }$ D: E3 _7 ~# nmcli connection up eth0
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给eth0添加一个IP(IPADDR)
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& p1 d! o* e  e4 |' F% V' w" A: R# nmcli connection modify eth0 ipv4.addresses 192.168.0.585 J# M( q: t7 N9 y  {: l7 X4 b

: E, w/ e1 O) ]9 M' Q给eth0添加一个子网掩码(NETMASK)
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# nmcli connection modify eth0 ipv4.addresses 192.168.0.58/243 Y$ d% E1 _6 ?+ B' J: a

* ?$ t8 H( i% e/ cIP获取方式设置成手动(BOOTPROTO=static/none)
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: m* s' }3 ^7 c' [% o# nmcli connection modify eth0 ipv4.method manual7 S! X+ W+ y  t
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添加一个ipv4/ @- L4 t2 S; H4 B
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# nmcli connection modify eth0 +ipv4.addresses 192.168.0.59/24: ~( V, r; R. b0 m

9 y4 F; o5 @+ f1 J7 {) U: R( s/ I删除一个ipv4! k' R% `/ j3 l
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# nmcli connection modify eth0 -ipv4.addresses 192.168.0.59/24' u" t/ [3 h# I0 b9 d
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添加DNS6 e/ G: @5 F5 E
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# nmcli connection modify eth0 ipv4.dns 114.114.114.114
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删除DNS: S9 G/ j: ~# T) Z$ i
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# nmcli connection modify eth0 -ipv4.dns 114.114.114.1148 U/ r- @! H9 q* r/ g& `4 _
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添加一个网关(GATEWAY)& K- X) ^9 m7 u/ o- {
  q0 o0 j. |1 ?. l' h! U$ [) o
# nmcli connection modify eth0 ipv4.gateway 192.168.0.2& ?4 X9 F$ a, k' T( |, K+ ?

6 |7 W5 a4 K+ F3 `, i, _可一块写入:
# W2 M9 Y$ S6 A3 i7 l6 p
9 L8 [! u2 l! ~* Wnmcli connection modify eth0 ipv4.dns 114.114.114.114 ipv4.gateway 192.168.0.2" L* o9 v$ r# z# W6 M

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; }( Q' ^; w3 d+ \# X修改网卡名称
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5 Y% \& ^0 j8 t* ~  T$ k% ~删除网卡连接
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# nmcli connection delete eno167777366 V1 v- `3 n! D: q' _5 E! T

$ S( q$ ?) M3 q) _0 t0 @* {  i修改内核参数配置文件' e% g0 G4 `5 l8 C2 z) f) o" d
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# vi /etc/default/grub
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植入内核9 d9 V$ D) \0 W0 n5 r+ A2 Q% e. }$ F* ^  _

1 y0 ~6 ~9 e) X# grub2-mkconfig -o /boot/grub2/grub.cfg
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2 `5 W& |! e) ~重启
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0 J5 l; J7 v. v: k' S( z#reboot9 y, S6 S, E' Y, M$ A7 J& i8 w( E
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添加网卡
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! r8 r3 @: V5 j# nmcli connection add type ethernet con-name eth0
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