参考：man7.org/linux/man-p…
▶ kgp | grep pinger
kube-system kube-ovn-pinger-52z6c 1/1 Running 0 12h 10.16.0.6 kube-ovn-worker <none> <none>
kube-system kube-ovn-pinger-69ngg 1/1 Running 0 12h 10.16.0.7 kube-ovn-control-plane <none> <none>
(v.v)
root@debian:~
▶ k exec -it -n kube-system kube-ovn-pinger-52z6c -- bash
Defaulted container "pinger" out of: pinger, hostpath-init (init)
nobody@kube-ovn-pinger-52z6c:/kube-ovn$
nobody@kube-ovn-pinger-52z6c:/kube-ovn$
nobody@kube-ovn-pinger-52z6c:/kube-ovn$ ping -c 3 10.16.0.7
PING 10.16.0.7 (10.16.0.7): 56 data bytes
64 bytes from 10.16.0.7: icmp_seq=0 ttl=64 time=0.093 ms
64 bytes from 10.16.0.7: icmp_seq=1 ttl=64 time=0.087 ms
64 bytes from 10.16.0.7: icmp_seq=2 ttl=64 time=0.093 ms
--- 10.16.0.7 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.087/0.091/0.093/0.000 ms
nobody@kube-ovn-pinger-52z6c:/kube-ovn$ ^C
nobody@kube-ovn-pinger-52z6c:/kube-ovn$
exit
command terminated with exit code 130
(v.v)
root@debian:~ ⍉
▶ k ko sbctl list Datapath_Binding
_uuid : 10e1b375-f633-45ab-9f84-99b65acf9b07
external_ids : {logical-switch="f1fc5816-592f-4954-bca8-cc54f88eda0b", name=join}
load_balancers : []
tunnel_key : 2
_uuid : 20165466-e61f-40a0-b090-a7efdb129fbe
external_ids : {logical-switch="3b8b05cf-3182-4672-be82-60c3cb3ddd46", name=ovn-default}
load_balancers : []
tunnel_key : 3
_uuid : 49ea35b3-7f00-40bb-9473-e3f5d6ccc942
external_ids : {always_learn_from_arp_request="false", logical-router="5c0e7d67-d07a-4b9e-b204-6d90d16d5b7b", mac_binding_age_threshold="300", name=ovn-cluster}
load_balancers : []
tunnel_key : 1
(v.v)
root@debian:~
root@kube-ovn-worker:/kube-ovn
tcpdump: data link type LINUX_SLL2
tcpdump: listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes
02:41:31.925739 eth0 Out IP (tos 0x0, ttl 64, id 3691, offset 0, flags [DF], proto UDP (17), length 110)
172.18.0.3.8720 > 172.18.0.2.6081: [bad udp cksum 0x5895 -> 0x6c02!] Geneve, Flags [C], vni 0x3, options [class Open Virtual Networking (OVN) (0x102) type 0x80(C) len 8 data 00060007]
IP (tos 0xc0, ttl 64, id 63635, offset 0, flags [DF], proto ICMP (1), length 52)
10.16.0.6 > 10.16.0.7: ICMP echo request, id 34410, seq 0, length 32
--
02:41:32.025935 eth0 Out IP (tos 0x0, ttl 64, id 3696, offset 0, flags [DF], proto UDP (17), length 110)
172.18.0.3.8720 > 172.18.0.2.6081: [bad udp cksum 0x5895 -> 0x6c02!] Geneve, Flags [C], vni 0x3, options [class Open Virtual Networking (OVN) (0x102) type 0x80(C) len 8 data 00060007]
IP (tos 0xc0, ttl 64, id 63646, offset 0, flags [DF], proto ICMP (1), length 52)
10.16.0.6 > 10.16.0.7: ICMP echo request, id 34410, seq 1, length 32
--
02:41:32.125819 eth0 Out IP (tos 0x0, ttl 64, id 3712, offset 0, flags [DF], proto UDP (17), length 110)
172.18.0.3.8720 > 172.18.0.2.6081: [bad udp cksum 0x5895 -> 0x6c02!] Geneve, Flags [C], vni 0x3, options [class Open Virtual Networking (OVN) (0x102) type 0x80(C) len 8 data 00060007]
IP (tos 0xc0, ttl 64, id 63669, offset 0, flags [DF], proto ICMP (1), length 52)
10.16.0.6 > 10.16.0.7: ICMP echo request, id 34410, seq 2, length 32
--
02:41:33.040206 eth0 Out IP (tos 0x0, ttl 64, id 3810, offset 0, flags [DF], proto UDP (17), length 110)
172.18.0.3.8720 > 172.18.0.2.6081: [bad udp cksum 0x5895 -> 0x6c02!] Geneve, Flags [C], vni 0x3, options [class Open Virtual Networking (OVN) (0x102) type 0x80(C) len 8 data 00060007]
IP (tos 0xc0, ttl 64, id 63708, offset 0, flags [none], proto ICMP (1), length 52)
10.16.0.6 > 10.16.0.7: ICMP echo reply, id 20568, seq 0, length 32
--
02:41:33.140566 eth0 Out IP (tos 0x0, ttl 64, id 3811, offset 0, flags [DF], proto UDP (17), length 110)
172.18.0.3.8720 > 172.18.0.2.6081: [bad udp cksum 0x5895 -> 0x6c02!] Geneve, Flags [C], vni 0x3, options [class Open Virtual Networking (OVN) (0x102) type 0x80(C) len 8 data 00060007]
IP (tos 0xc0, ttl 64, id 63709, offset 0, flags [none], proto ICMP (1), length 52)
10.16.0.6 > 10.16.0.7: ICMP echo reply, id 20568, seq 1, length 32
^C108 packets captured
