centos stream 9 配置网卡文件

admin

1、Centos stream 9 网络介结

Centos以前版本，NetworkManage以ifcfg格式存储网络配置文件在/etc/sysconfig/networkscripts/目录中。但是，Centos steam 9现已弃用ifcfg格式，默认情况下，NetworkManage不再创建此格式的新配置文件。从Centos steam 9开始采用密钥文件格式（基于INI文件），NetworkManager网卡配置在/etc/NetworkManager/system-connections目录中。这种格式基于INI文件，可以很容易地解析和生成。NetworkManager密钥文件中的每个部分都对应于一个nm-settings(5) 和nm-settings-keyfile(5)。如果您仍然使用ifcfg格式的网络配置文件，请考虑迁移，将它们转换为keyfile格式。要一次移植所有配置文件，请输入：nmcli connection migrate，此命令将所有配置文件从ifcfg格式迁移到keyfile格式化并存储在/etc/NetworkManager/system connections/中。或者，要仅移植特定的配置文件，请输入： nmcli connection migrate <profile_name|UUID|D-Bus_path>有关详细信息，请参阅：
6 w# R; `7 }( b( h2 N# |
* nm-settings-keyfile(5)
/ S" }" X" c) D- |8 G7 i
' d+ l" Y* [* t& Y+ I* nmcli(1)

  q6 q! E% O" J2、通过网络配置文件设置IP

[root@10 system-connections]# pwd
& U$ E0 K& _8 W1 _! @/etc/NetworkManager/system-connections
* `1 A2 r% s  X* S( [
& q% L3 E4 ~3 T% E+ y3 O- B% [8 q+ D[root@10 system-connections]# ls
ens160.nmconnection  ens192.nmconnection  ens224.nmconnection  ens256.nmconnection
! a6 @% B& y; G) k0 [

[root@10 system-connections]# vim ens160.nmconnection


& Z4 f2 v2 m8 x: l4 K# T. ][connection]
$ V, Q( B# C# t* }: N% x( Rid=ens160
. q+ L2 r" e& [9 Cuuid=d8c7b37e-5eef-3bea-8893-a05f88ade99f    ###正常情况可以不管，如果是虚机，建议删除或者注释掉。
type=ethernet
: z1 C5 X5 N9 P) }2 Gautoconnect-priority=-999
interface-name=ens160
timestamp=1739449260
' h4 e$ e' e" m
[ethernet]

[ipv4]
#method=auto
method=manual
3 l; z, c1 o+ B+ E  K9 Uaddress1=192.168.8.195/24,192.168.8.1
dns=202.106.0.20;114.114.114.114;
dns-search=
- y5 C& x4 @' D' w* ]$ a/ p#route1=0.0.0.0/0,192.168.8.1,0  ##configure router gateway  配置路由网关

2 ~& \$ }+ R: z; W: X& @/ v, K" X1 A[ipv6]
addr-gen-mode=eui64
; @( ?7 ?. q& Y# ?% Dmethod=auto
' w( B: t1 s" @4 D/ ~( ~6 Mdns-search=

[proxy]

4 ^% v% S% z' u5 b# s" m7 R. d; O
; y9 F6 W# a( _% ~[root@bogon ~]# nmcli c reload
[root@bogon ~]#
[root@bogon ~]#
# u7 P  s. n/ B1 z5 J' r[root@bogon ~]#
4 n6 }+ H' g$ ]: L1 E[root@bogon ~]# nmcli c up ens160
- g9 v/ R! W+ [. m4 `. nConnection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)
* E/ V& i; J- R5 z3 T[root@bogon ~]#

" u4 c9 `0 s3 X! E
添加反向路由：

echo "net.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
% d- F" l, S  _net.ipv4.conf.ens192.rp_filter = 0
& U( X9 Q; ?0 h8 gnet.ipv4.conf.ens256.rp_filter = 0">>/etc/sysctl.conf
/ O" Y- [2 _+ e
执行
8 Q5 t  O: R3 V( S* S9 Zsysctl -p

/ I9 ^! M, x* `上面的步骤为解决因路由问题导致网络不通的问题，解决步骤如下：
[root@bogon ~]# ping -I ens160 www.baidu.com
PING www.a.shifen.com (110.242.69.21) from 192.168.8.195 ens160: 56(84) bytes of data.

^C
--- www.a.shifen.com ping statistics ---
2 _+ h0 a  t2 _& l66 packets transmitted, 0 received, 100% packet loss, time 66598ms

4 X+ T- O. }" X: |9 c0 b[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0

" n/ f" K7 {) M* i2 W6 rnet.ipv4.conf.ens224.rp_filter = 0">>/etc/sysctl.conf
[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0
3 h& o4 T6 U! G. C# h
net.ipv4.conf.ens224.rp_filter = 0">>/etc/sysctl.conf^C
% p9 l/ Y, ~9 V3 L7 _' }0 L% p[root@bogon ~]# vim /etc/sysctl.conf
" a  N# l5 O/ m2 M+ G[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
net.ipv4.conf.ens192.rp_filter = 0
net.ipv4.conf.ens256.rp_filter = 0">>/etc/sysctl.conf
[root@bogon ~]# sysctl -p
. U8 v: a. |. ]. Vnet.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
  \: v. o' J; t9 m4 F+ p' N& [net.ipv4.conf.ens192.rp_filter = 0
net.ipv4.conf.ens256.rp_filter = 0
1 ?& C: A! w+ Q! P; E3 _[root@bogon ~]# ping -I ens160 www.baidu.com
PING www.a.shifen.com (110.242.70.57) from 192.168.8.195 ens160: 56(84) bytes of data.
: i! y+ N. x$ U" C64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=1 ttl=53 time=11.1 ms
2 V  p9 e; ~6 _# b7 P64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=2 ttl=53 time=11.1 ms
64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=3 ttl=53 time=10.7 ms
^C
--- www.a.shifen.com ping statistics ---
2 p0 M8 s  A5 E3 packets transmitted, 3 received, 0% packet loss, time 2004ms
  X8 U6 g7 H( p- {0 T% A+ srtt min/avg/max/mdev = 10.737/10.973/11.109/0.167 ms


9 F5 x! m4 t& [' k1 h1 ?$ ?3 m

) t# \. ^' H# w+ _6 g3 y0 \[root@bogon ~]# nmcli connection reload
# {7 @& A: B$ a; D' Z5 z4 f; c8 H
[root@bogon ~]# nmcli connection down ens3

[root@bogon ~]# nmcli connection up ens3

6 ?5 t# m6 j+ T
9 Z5 a& e! e" p( p8 W, k6 [' _: C' @
" s! I9 n  ^0 E# e* k4 d0 }

admin

使用nmcli 配置网卡：
# W$ c! a8 ~: @$ hnmcli con mod ens33 ipv4.addresses 192.168.1.100/24
( ]/ g) f6 ~& M# r! E3 u3 Jnmcli con mod ens33 ipv4.gateway 192.168.1.1
nmcli con mod ens33 ipv4.method manual
/ A% O) B4 F* N; H9 pnmcli con mod ens33 ipv4.dns "8.8.8.8,8.8.4.4"
+ K/ Y* H8 X1 e3 y* _, A) lnmcli con up ens33

admin

[root@bogon ~]# nmcli d
: ]" S* m( c$ T7 e+ GDEVICE  TYPE      STATE                   CONNECTION
% [0 ]0 s$ d7 V: j4 Yens256  ethernet  connected               ens256     
: }7 f3 y2 g+ U8 y* ]6 A8 mens160  ethernet  connected               ens160     
! H! F- S0 \) L$ M  Y% dens192  ethernet  connected               ens192     
ens224  ethernet  connected               ens224     
lo      loopback  connected (externally)  lo      

admin

vim ens192.nmconnectio
8 r  z5 C6 G9 h7 b% v[connection]
- r1 `+ R* L  k( c5 b" A" Y& uid=ens192
7 B5 Q; N% r) [7 `#uuid=c6451e02-0fd4-3bff-9857-cbc73b2badb7
type=ethernet
autoconnect-priority=-999
interface-name=ens192
timestamp=1739449260

/ b3 a* R) j& O% D; c( f[ethernet]

3 f! K1 U. u# g" C[ipv4]
#method=auto
+ O- c' g2 g) ]8 n$ pmethod=manual
address1=162.96.90.195/24,162.96.90.2
dns-search=
! z! Y2 h9 |. _
9 R# }6 V/ K! x% Q[ipv6]
addr-gen-mode=eui64
+ t! l& z3 |' O/ Umethod=auto

[proxy]
7 G: u  W8 N; S" K" T; f+ F
/ V4 _$ j* F5 N( r' y! m% O* x[root@bogon system-connections]# vim ens192.nmconnection
[root@bogon system-connections]# nmcli c r
+ v, I$ J; w7 l# V' y1 ]1 h[root@bogon system-connections]#
, _" ?' s# x: |[root@bogon system-connections]# nmcli c d ens192
/ k+ L/ p2 {: F' tConnection 'ens192' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/8)
[root@bogon system-connections]# nmcli c up ens192
: [" L8 X/ I' {Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/9)
- j3 n+ T/ X- u4 c1 f- l5 D[root@bogon system-connections]#

+ E9 P! d; y( t3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:90:af:35 brd ff:ff:ff:ff:ff:ff
    altname enp11s0
& E2 d, S* Q7 L: h* G0 k7 Q; M    inet 162.96.90.195/24 brd 162.96.90.255 scope global noprefixroute ens192
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe90:af35/64 scope link noprefi

admin

[root@bogon system-connections]# cat ens256.nmconnection
+ I' ]3 n5 h" V% a[connection]
) Q# O6 h! F, L% ~9 G( h. H9 Sid=ens256
& @1 N1 ^% |4 ?2 p2 Y; b4 k#uuid=c3817da4-88c4-37d0-9964-eebea0550881
& c6 g  `2 h7 o0 Atype=ethernet
. R5 {! K7 a0 c- cautoconnect-priority=-999
$ |/ s2 {' n4 x" q) Finterface-name=ens256
timestamp=1739449260

8 r7 Y, \& n; J: H* T3 H7 P[ethernet]
$ {1 `. @2 N9 C* _
- X% y: Q) Q# R. f' z/ x: ]9 e[ipv4]
#method=auto
method=manual
address1=192.168.13.195/24,192.168.13.2
dns=202.106.0.20;114.114.114.114；
+ l1 w1 Y1 m, o  F2 Fdns-search=
[ipv6]
addr-gen-mode=eui64
# R: H5 N6 p4 umethod=auto
/ a5 D# ~7 V" l
[proxy]
8 v. S3 q! k) s* p# Y[root@bogon system-connections]# nmcli c d ens256
+ D2 Z0 l2 m; qConnection 'ens256' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
0 g8 [- Q+ k; \0 Z) T+ K[root@bogon system-connections]# nmcli c u ens256
! _: y1 h2 p$ \3 E$ Q# C; ^Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)
[root@bogon system-connections]#

5 Q6 k1 {/ G/ D9 d[root@bogon system-connections]# nmcli c r
5 z4 Q, h! v! g7 i' X9 o: N" p