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[root@ocp-k8s-test2 ~]# route -n
4 s* h. q% o/ l3 OKernel IP routing table
k+ P: [& O- a- e) ~. s5 u1 M& X, e* B1 tDestination Gateway Genmask Flags Metric Ref Use Iface7 i( l: }" p% @+ x1 _
169.254.169.254 192.168.101.65 255.255.255.255 UGH 0 0 0 eth0
# c) _ B' f1 i$ R) r3 E# [* \192.168.100.0 0.0.0.0 255.255.255.224 U 0 0 0 eth02 O2 k" f/ b% L+ H& o- G& b) h
192.168.100.32 0.0.0.0 255.255.255.224 U 0 0 0 eth02 \" r) B! d' {; n( e" r- D
192.168.100.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0) ^1 U. I. c. p! P7 {0 O
192.168.100.96 0.0.0.0 255.255.255.224 U 0 0 0 eth0
, `! D- C, D) s4 r4 @7 {192.168.100.128 0.0.0.0 255.255.255.224 U 0 0 0 eth0% D+ `2 O7 _: b* f4 f, N% v' A
192.168.100.160 0.0.0.0 255.255.255.224 U 0 0 0 eth0
" }/ J$ ~0 O) [192.168.100.192 0.0.0.0 255.255.255.224 U 0 0 0 eth09 m) A2 c6 \3 {/ y' l8 }
192.168.100.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0) S- k* Y0 |9 g" d
192.168.101.0 0.0.0.0 255.255.255.224 U 0 0 0 eth0
7 z% i9 t* C+ I4 g l192.168.101.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0' O, B5 d7 k" [- X0 b3 H7 {
[root@ocp-k8s-test2 ~]# ping www.baidu.com h$ K' g4 j; v; f
ping: www.baidu.com: Name or service not known
9 Y/ B2 w5 B& g" ?# c[root@ocp-k8s-test2 ~]# ping 192.168.0.1" ]& }$ H K3 `) L
connect: Network is unreachable6 k; P1 @& i" o @9 h& Q0 P0 e: S
[root@ocp-k8s-test2 ~]# ip addr
) L z; `7 B N( ~, X1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000# L9 S8 k# U7 `- X2 O7 Q( W& |; m
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00; x$ Q9 f) @, A! B3 ]
inet 127.0.0.1/8 scope host lo
& f+ j, x8 U/ m% x C8 @ valid_lft forever preferred_lft forever; W0 O- j# T2 n! l
inet6 ::1/128 scope host 6 b1 H3 r, [/ F6 x0 {+ v& k5 }" l- L
valid_lft forever preferred_lft forever
- N) |$ X. m5 S h2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
$ C$ Q3 P0 p9 C5 T' V# B0 h8 N1 t5 | link/ether fa:16:3e:50:eb:dc brd ff:ff:ff:ff:ff:ff1 f! Q! ~ o% M1 q5 a2 I
inet 192.168.101.67/27 brd 192.168.101.95 scope global eth0/ r& @4 q" U7 H/ _7 f; ?
valid_lft forever preferred_lft forever8 d" k" r6 p8 W: m
inet6 fe80::f816:3eff:fe50:ebdc/64 scope link
' n) R6 H$ |- w: b$ k; U& S valid_lft forever preferred_lft forever2 H* E) N/ y7 v4 s5 G% k
5 ^4 u' t g0 o如果我们重启网络服务:
( f; H. I+ q* I& y9 }systemctl restart network.service9 c U. y/ z3 V" m1 A& e2 c
之后
) l+ T3 l* B9 D7 _" t
/ X6 \; f7 y2 y* Y[root@ocp-k8s-test2 ~]# systemctl restart network.service
7 Z' E0 i. _% `[root@ocp-k8s-test2 ~]#
+ A4 C4 o! e: T z! K$ S9 x2 ?
4 D: O7 `7 t- C1 e d路由发生变化:
* L' b, H+ [" o' r: Z- X- ~[root@ocp-k8s-test2 ~]# route -n% t1 J d& }4 i1 g" s
Kernel IP routing table
, a9 U4 C% u# c9 g4 K$ B. ^9 qDestination Gateway Genmask Flags Metric Ref Use Iface
; p9 F) f* b) z0 X$ [0.0.0.0 192.168.100.1 0.0.0.0 UG 100 0 0 eth0; v- r# q( `1 ]7 r1 }: z8 D
169.254.169.254 192.168.101.65 255.255.255.255 UGH 100 0 0 eth00 w, P& q! b$ |/ z& k7 S) u1 y1 }7 V
192.168.100.0 0.0.0.0 255.255.255.224 U 100 0 0 eth0) p, M7 Z$ b( a8 a
192.168.100.32 0.0.0.0 255.255.255.224 U 100 0 0 eth0
* ]7 O- i; f3 `& J192.168.100.64 0.0.0.0 255.255.255.224 U 100 0 0 eth0
- Z6 O& D% G8 x' J! _1 P3 U: _192.168.100.96 0.0.0.0 255.255.255.224 U 100 0 0 eth03 G/ e1 [5 l) e/ t, }+ m1 d
192.168.100.128 0.0.0.0 255.255.255.224 U 100 0 0 eth0
3 b9 |$ h$ p Q* c2 k# H192.168.100.160 0.0.0.0 255.255.255.224 U 100 0 0 eth0$ E1 z& G8 L* I1 e
192.168.100.192 0.0.0.0 255.255.255.224 U 100 0 0 eth0
: z' N, h0 n! n- X' Y192.168.100.224 0.0.0.0 255.255.255.224 U 100 0 0 eth0
0 E. S K# B- t: e% s2 C' L$ ]192.168.101.0 0.0.0.0 255.255.255.224 U 100 0 0 eth06 x2 Y( b% Z; m7 F0 p* D
192.168.101.64 0.0.0.0 255.255.255.224 U 100 0 0 eth0
6 K' p! p' |% z( L9 `此时增加了,192.168.100.1的路由网络。5 P; R( S& }. N# z2 _: ]/ n
( a6 R! u. B- e9 \
ping 外网可以通了,
$ g6 G9 r8 f. w& S: i" h. D[root@ocp-k8s-test2 ~]# ping www.baidu.com0 N$ f: T0 ]( n/ \
PING www.a.shifen.com (220.181.38.150) 56(84) bytes of data.' M4 q& a% ^* @1 O) ]
64 bytes from 220.181.38.150 (220.181.38.150): icmp_seq=1 ttl=53 time=4.32 ms
3 z' s# p4 _5 p6 Y; C^C
# Z6 C. I Y+ q% _$ x6 W' A" g--- www.a.shifen.com ping statistics ---
0 s( R) T/ |' Q; T7 S1 packets transmitted, 1 received, 0% packet loss, time 0ms% g# e R* |' r
rtt min/avg/max/mdev = 4.328/4.328/4.328/0.000 ms: D! J& t) {. u
[root@ocp-k8s-test2 ~]# ping 192.168.0.12 J! N' ]. z: Z! N9 ~
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
L( h2 |% E7 f% d" l' e64 bytes from 192.168.0.1: icmp_seq=1 ttl=254 time=0.239 ms
2 M% r5 V! e) c- p^C
J" A. \; ] G2 G8 s--- 192.168.0.1 ping statistics ---' V" I4 b/ Y, \% V- p: E
1 packets transmitted, 1 received, 0% packet loss, time 0ms/ Y1 u3 c7 ]; S& r% \
rtt min/avg/max/mdev = 0.239/0.239/0.239/0.000 ms1 g! _8 P/ [ d8 D/ X
[root@ocp-k8s-test2 ~]#
# d1 ~# R. X4 y. ?: [1 M5 m5 |) |9 m% b9 [5 n; P" d7 w' o g
3 y# \4 |+ O, ?- Y1 L% a+ F, w7 F6 o
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