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[root@ocp-k8s-test2 ~]# route -n% i# F1 {: d0 L
Kernel IP routing table: j. f8 _0 b+ t" [
Destination Gateway Genmask Flags Metric Ref Use Iface1 V- A1 ~. w( S5 F4 Z% N3 M$ K! M9 l" G, E
169.254.169.254 192.168.101.65 255.255.255.255 UGH 0 0 0 eth0
8 M: T6 d/ n& T# e192.168.100.0 0.0.0.0 255.255.255.224 U 0 0 0 eth0$ L4 @. p! c" n- _
192.168.100.32 0.0.0.0 255.255.255.224 U 0 0 0 eth0: L- ]6 P. p+ R1 Q
192.168.100.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0
* w" H- K3 a: R6 |192.168.100.96 0.0.0.0 255.255.255.224 U 0 0 0 eth0
! q9 [2 U2 H6 l* c% O5 F+ _192.168.100.128 0.0.0.0 255.255.255.224 U 0 0 0 eth0
: n! d& F: M: M& m% }192.168.100.160 0.0.0.0 255.255.255.224 U 0 0 0 eth0
$ _& d- x7 U- e9 F! N6 a192.168.100.192 0.0.0.0 255.255.255.224 U 0 0 0 eth00 E# h3 _( s7 }/ z2 T
192.168.100.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0# a" L: v. F4 I3 j* i" ]+ M6 Y% J
192.168.101.0 0.0.0.0 255.255.255.224 U 0 0 0 eth08 n D# p2 `, Q1 Y% w
192.168.101.64 0.0.0.0 255.255.255.224 U 0 0 0 eth0
0 z/ y" S1 N6 Y. R1 M4 k[root@ocp-k8s-test2 ~]# ping www.baidu.com
3 m4 U2 R. Q# x% T0 ?: m Bping: www.baidu.com: Name or service not known
: F7 y& [8 S# T; N( `[root@ocp-k8s-test2 ~]# ping 192.168.0.1
) J8 X, ^% q/ [- J0 Y6 B% O1 x0 Hconnect: Network is unreachable
# H( ?2 v5 i* L, G! @[root@ocp-k8s-test2 ~]# ip addr
6 J1 T8 V& l. o U/ D- _$ x1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
6 g8 \( o* G! F3 X( ~) V link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
5 m4 D: `6 ]. I$ A inet 127.0.0.1/8 scope host lo
9 S9 f5 U U3 ~2 h0 r$ [) L% k( W% n valid_lft forever preferred_lft forever4 e8 g4 b2 V, Z# X2 I F
inet6 ::1/128 scope host ( g+ G' ~5 h4 B+ t" N
valid_lft forever preferred_lft forever7 }6 K, R; y5 V0 |4 [- U
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000$ [/ T) E4 |+ |3 ?$ Y: J
link/ether fa:16:3e:50:eb:dc brd ff:ff:ff:ff:ff:ff
8 \9 a1 f8 a! v z( C inet 192.168.101.67/27 brd 192.168.101.95 scope global eth0
0 F8 t0 z. T% t( o3 Q valid_lft forever preferred_lft forever) p) i/ c* Z( b8 a* x
inet6 fe80::f816:3eff:fe50:ebdc/64 scope link : J( A" M% z! \9 t" t' A3 y# r
valid_lft forever preferred_lft forever% @( }$ h, e# `$ a4 l/ @$ m( Z' m
' D0 h. ` q3 Q如果我们重启网络服务:8 u* Z& `) Y( i: q0 @+ s; }
systemctl restart network.service( y0 T. @; s! b
之后
& H9 f. A0 y2 D6 L( G7 V- s, D& k4 ^) i( G8 T
[root@ocp-k8s-test2 ~]# systemctl restart network.service
: A5 @7 a' A' _8 W[root@ocp-k8s-test2 ~]#
0 N, X' X, F; ?& l x: R
. x+ k# Q5 H7 B1 R0 h/ r5 O路由发生变化:
; @3 _( ]; |" w. H- z/ ]; s: R[root@ocp-k8s-test2 ~]# route -n
' r& c3 `. d" G- c8 I, FKernel IP routing table
7 Y2 a7 ?2 i! |) t6 ^Destination Gateway Genmask Flags Metric Ref Use Iface
7 X+ S2 S& v* p O3 j0.0.0.0 192.168.100.1 0.0.0.0 UG 100 0 0 eth0- q7 B& e N* V7 \2 n4 T; n& f; d Y
169.254.169.254 192.168.101.65 255.255.255.255 UGH 100 0 0 eth07 w0 b, t/ I7 i( m J/ ? k' o
192.168.100.0 0.0.0.0 255.255.255.224 U 100 0 0 eth0
9 s; i0 Y: w0 l. L$ b* W0 l192.168.100.32 0.0.0.0 255.255.255.224 U 100 0 0 eth0" ]2 b( {/ ?$ V' p/ g* ?( {
192.168.100.64 0.0.0.0 255.255.255.224 U 100 0 0 eth01 a8 Z, w- b! G% {; A7 d7 y
192.168.100.96 0.0.0.0 255.255.255.224 U 100 0 0 eth08 ]( g8 y3 _( ^. r* @
192.168.100.128 0.0.0.0 255.255.255.224 U 100 0 0 eth0
. `. L6 }, X$ B0 o9 ? A( D192.168.100.160 0.0.0.0 255.255.255.224 U 100 0 0 eth0
# f% a0 k* ?! m, ^) O5 q' G192.168.100.192 0.0.0.0 255.255.255.224 U 100 0 0 eth0& l" ~5 T! ^8 b- j; x
192.168.100.224 0.0.0.0 255.255.255.224 U 100 0 0 eth0; v' X, S' m3 B8 v+ ^, c
192.168.101.0 0.0.0.0 255.255.255.224 U 100 0 0 eth0
2 C7 ?2 y2 L. x2 _; A) ^1 k$ q* M, }192.168.101.64 0.0.0.0 255.255.255.224 U 100 0 0 eth09 w- l3 C) K1 H% j% ?% o
此时增加了,192.168.100.1的路由网络。
$ ^" E/ o$ {7 _! Y' b J T7 H) o! z/ |; [7 S! m% l2 ?# D @
ping 外网可以通了,
0 ?' r; e) r8 m$ U[root@ocp-k8s-test2 ~]# ping www.baidu.com
9 N7 t7 N% }) s# W. e3 H% zPING www.a.shifen.com (220.181.38.150) 56(84) bytes of data.2 b8 W$ @$ K7 }- W3 U! G) }
64 bytes from 220.181.38.150 (220.181.38.150): icmp_seq=1 ttl=53 time=4.32 ms
' k' a8 I7 H; @# J2 q0 a^C
, z2 |, V* T8 Q: W9 O; V--- www.a.shifen.com ping statistics ---/ Q/ A, |8 t: {4 w
1 packets transmitted, 1 received, 0% packet loss, time 0ms
; m7 a5 d, H# k" a2 a$ r; z* G+ ortt min/avg/max/mdev = 4.328/4.328/4.328/0.000 ms
9 T$ y; b7 r2 x$ _[root@ocp-k8s-test2 ~]# ping 192.168.0.1) v2 c& u; _% O4 I9 \% n9 J
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
, |$ w, a/ z8 V' c64 bytes from 192.168.0.1: icmp_seq=1 ttl=254 time=0.239 ms" T1 v$ x3 \" L
^C8 T. B% y. K3 r4 g
--- 192.168.0.1 ping statistics ---7 X6 I0 q9 V; i$ w
1 packets transmitted, 1 received, 0% packet loss, time 0ms, w* L% r6 V. j9 T
rtt min/avg/max/mdev = 0.239/0.239/0.239/0.000 ms! I5 k( N/ Y5 |
[root@ocp-k8s-test2 ~]# 2 z; F% w2 y3 q6 R
1 ?; w2 L) J2 G% `2 l6 d9 b l3 ^% ]. U
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