pat 无法ping通外网排查思路ip netns

admin

pat ping 相关地址：
sudo ip netns exec pat ping 114.114.114.114
connect: Network is unreachable
检查ns服务状态：
! ?  \# B+ ?4 Asudo systemctl status ns.service
# N  l  O6 E4 x" B4 C; r3 N  u鈼[0m ns.service - NS Service
   Loaded: loaded (/usr/lib/systemd/system/ns.service; enabled; vendor preset: disabled)
! g* T: q2 f& D* y   Active: active (running) since Thu 2019-01-31 14:46:14 CST; 2 months 11 days ago
  j8 a4 t# w% W5 z) x  h' j! E  Z Main PID: 2860 (sh)
5 z" W8 d5 ^9 D7 l" \5 U; n   CGroup: /system.slice/ns.service
           鈹溾攢2860 sh /opt/ns_check.sh
) B/ \, n- s  s* D# {# i  p           鈹斺攢9579 sleep 30

' W" j) h7 k" `9 y5 q8 W" R* _3 xJan 31 14:46:15 SV743 sh[2858]: RTNETLINK answers: Network is unreachable
Jan 31 14:46:14 SV743 systemd[1]: Starting NS Service...
Jan 31 14:46:14 SV743 systemd[1]: Started NS Service.

重启ns服务：
1 N7 G' H5 y% D7 l7 Z: {sudo systemctl restart ns.service
( g2 Z- Z; K3 Z' _7 P7 r, z/ n- {
6 ^6 ~' t' K" `2 N

admin

1. 暂停服务
1.1 不影响在途业务
> disable service 192.168.2.10:8480 graceFul yes
+ b6 h: s+ j: z# _7 \- P0 _　Done

5 [% J7 M7 `2 {% P+ M* C6 U4 t1.2 强制停止服务
> disable service 192.168.2.10:8480 graceFul no
+ h. g7 Z8 Z; H; }# y　Done
2 e: t& s8 V% e6 b6 M7 u2 |/ A
$ r% K3 O$ @, ?2 c2. 开启服务
> enable service 192.168.2.10:8480
2 L/ B9 D* |5 a6 u! b1 v) s' h　Done

3. 检查服务状态
' d% v$ a( X" d7 o2 n/ n4 U$ J3.1 服务已停止
0 R+ S- L% T5 R4 V' |> show service 192.168.2.10:8480
        192.168.2.10:8480 (192.168.2.10:8480) - HTTP
2 ^$ L  |9 H- }7 o  n        State: OUT OF SERVICE

0 u; n9 o  A. T, n" R" u% k$ h% f3.2 服务正在停止
> show service 192.168.2.10:8480
        192.168.2.10:8480 (192.168.2.10:8480) - HTTP
1 |- S8 I. A% U6 b: ^& e& p" @; R        State: GOING OUT OF SERVICE (Graceful, Out Of Service in 8 seconds)
" H1 H( G. J0 Q1 Q2 o# y4 I: K
3.3 服务正常
> show service 192.168.2.10:8480
        192.168.2.10:8280 (192.168.2.10:8480) - HTTP
) f, S8 @, q" `2 f$ v% r5 f$ B        State: UP
! u. i1 j5 s% h; i
3.4 服务未启动
> show service 192.168.2.10:8480
        192.168.2.10:8480 (192.168.2.10:8480) - HTTP
        State: DOWN

admin

#在这里快速回复#ip netns exec spat_ns ip a