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[root@ocp-k8s-test2 ~]# route -n
- c, w) G; j$ u( W0 C% |2 GKernel IP routing table) o0 m2 B$ E& N) I: r, o4 v
Destination Gateway Genmask Flags Metric Ref Use Iface0 j6 o+ G/ J$ ]6 A; R+ b; _
169.254.169.254 192.168.101.65 255.255.255.255 UGH 0 0 0 eth06 r# A$ A6 I$ Z, U
192.168.100.0 0.0.0.0 255.255.255.224 U 0 0 0 eth0
P& D4 Y# X( M# D# Q( k$ y$ o192.168.100.32 0.0.0.0 255.255.255.224 U 0 0 0 eth0 @+ `2 H8 W9 `3 ]
192.168.100.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0
0 b/ |5 y8 [% W: }9 M7 K! [192.168.100.96 0.0.0.0 255.255.255.224 U 0 0 0 eth0$ C* N- \ O( f9 ` X7 n
192.168.100.128 0.0.0.0 255.255.255.224 U 0 0 0 eth0" [, B* u# B+ g A, O* ^
192.168.100.160 0.0.0.0 255.255.255.224 U 0 0 0 eth0" ?. R7 C$ N8 t
192.168.100.192 0.0.0.0 255.255.255.224 U 0 0 0 eth06 b+ C% Q6 F' u0 s! \% K# Q; s E
192.168.100.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0
5 g4 G% P. O3 M' {! _! E$ g192.168.101.0 0.0.0.0 255.255.255.224 U 0 0 0 eth09 S w1 u5 u3 Q2 h9 |" m, P
192.168.101.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0
5 w+ a; P) H, M[root@ocp-k8s-test2 ~]# ping www.baidu.com) Q% z; R! a3 h5 O% D
ping: www.baidu.com: Name or service not known
" {- `( n' J% V6 Y, A, O/ g* K[root@ocp-k8s-test2 ~]# ping 192.168.0.11 z# d# v; U* K8 y0 H# q! c: q
connect: Network is unreachable
% P4 j/ C4 \. u# B[root@ocp-k8s-test2 ~]# ip addr7 h1 z. I) h+ ~+ G/ B+ A
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
" j5 O6 p6 f1 g0 }1 v link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
% s+ G: T( r5 {+ U: S' m) h inet 127.0.0.1/8 scope host lo1 f7 ~- {8 Z5 [- ^3 f0 H9 E; K
valid_lft forever preferred_lft forever
: ?! U9 ?& O! S) g* K inet6 ::1/128 scope host 8 [4 g0 o( ^1 N. B+ ^% Z1 o5 f( G
valid_lft forever preferred_lft forever. G4 d4 g. Q2 Q7 D$ L' ]
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 10005 ?$ W4 m" I; j1 A
link/ether fa:16:3e:50:eb:dc brd ff:ff:ff:ff:ff:ff9 n3 b9 d% c# M, _* w
inet 192.168.101.67/27 brd 192.168.101.95 scope global eth0+ W% }( }1 O! C+ ^! G: _
valid_lft forever preferred_lft forever
8 x; B5 R$ m# k" S: V inet6 fe80::f816:3eff:fe50:ebdc/64 scope link
* ?3 n. z7 e' d) ~( v, |* k5 h2 A* b) m# N valid_lft forever preferred_lft forever9 I) H# J8 H" t
) j: ]8 _' o9 [- m+ i. X& c& G如果我们重启网络服务：% _; t* G1 U% D; x
systemctl restart network.service
: h$ \8 `; P) K3 F& g# k1 C之后
% g8 b# Q0 `6 D( [7 L+ m. P
7 y Y8 M. [( d[root@ocp-k8s-test2 ~]# systemctl restart network.service
2 z5 T5 `! n. j6 ][root@ocp-k8s-test2 ~]# 2 C4 k8 F+ s1 z% R- ?
- R& V. s: y4 u, \7 [1 g
路由发生变化：
. s9 f4 V( a s5 ?% {[root@ocp-k8s-test2 ~]# route -n
^/ }; u- L* Z0 \Kernel IP routing table
1 {6 K0 d2 @$ a) _+ u9 c0 s1 kDestination Gateway Genmask Flags Metric Ref Use Iface5 q7 [# @+ d' m
0.0.0.0 192.168.100.1 0.0.0.0 UG 100 0 0 eth0 r0 O+ z8 |% b) Y9 J4 N
169.254.169.254 192.168.101.65 255.255.255.255 UGH 100 0 0 eth0' H) u6 j; U3 a
192.168.100.0 0.0.0.0 255.255.255.224 U 100 0 0 eth0
) c7 I. p+ O5 `) G* p9 u4 u192.168.100.32 0.0.0.0 255.255.255.224 U 100 0 0 eth0
7 m2 t3 w: X3 f) X6 p9 [192.168.100.64 0.0.0.0 255.255.255.224 U 100 0 0 eth0% u0 N$ U" [* D& G0 p- X( {8 t
192.168.100.96 0.0.0.0 255.255.255.224 U 100 0 0 eth0
9 Y/ d7 a1 x; a5 i192.168.100.128 0.0.0.0 255.255.255.224 U 100 0 0 eth08 X8 P9 b$ c) s$ ?4 c. V+ b
192.168.100.160 0.0.0.0 255.255.255.224 U 100 0 0 eth0
k9 l$ c" D4 d+ C$ |: k6 ]- f192.168.100.192 0.0.0.0 255.255.255.224 U 100 0 0 eth0
% a/ w6 ?* h4 c9 q192.168.100.224 0.0.0.0 255.255.255.224 U 100 0 0 eth0: X$ B) m v, ?6 ~1 }. M S
192.168.101.0 0.0.0.0 255.255.255.224 U 100 0 0 eth0. X$ `# C) I! t6 k9 ?) D) ]
192.168.101.64 0.0.0.0 255.255.255.224 U 100 0 0 eth0
2 z0 K& G5 Y- A9 Y9 `9 f$ y; l此时增加了，192.168.100.1的路由网络。& Y% y: l) l3 N$ E
/ I$ I) l" d1 m( Fping 外网可以通了，
6 x, ?9 }; f+ O# S[root@ocp-k8s-test2 ~]# ping www.baidu.com; T; W7 a! ^: ~8 |% _
PING www.a.shifen.com (220.181.38.150) 56(84) bytes of data.1 W% j) u* r3 a: T
64 bytes from 220.181.38.150 (220.181.38.150): icmp_seq=1 ttl=53 time=4.32 ms9 U, Z9 \, p% P; ^
^C4 ?- J! N, ? |/ g0 t: k- F
--- www.a.shifen.com ping statistics ---
8 `/ K G2 n& @% e1 packets transmitted, 1 received, 0% packet loss, time 0ms) X8 c ]' a {+ ~' J' v a5 A! p
rtt min/avg/max/mdev = 4.328/4.328/4.328/0.000 ms( Z( W8 u$ y2 [9 D" j- n6 ~, L
[root@ocp-k8s-test2 ~]# ping 192.168.0.1
: |" M m+ A+ s' O2 aPING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.5 \5 }5 v$ G7 e! w+ k6 n7 R
64 bytes from 192.168.0.1: icmp_seq=1 ttl=254 time=0.239 ms
. U: y- f, E0 B. Y7 D^C' f# k; P) Z& b+ U( c. F
--- 192.168.0.1 ping statistics ---
0 B2 |. P9 V7 o1 b" h8 e8 Z1 packets transmitted, 1 received, 0% packet loss, time 0ms4 J8 |+ A+ M3 J; S6 [ N
rtt min/avg/max/mdev = 0.239/0.239/0.239/0.000 ms
( f! P8 I3 j i2 }8 h+ o) S[root@ocp-k8s-test2 ~]# ) E2 A0 L n) j! B- z, W( U
6 k" z9 I: E) S( f1 U2 e8 ], `# Y- m7 P* Q" U" @- P4 {9 K
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发表于 2022-7-29 17:01:21