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kubernetes kube-proxy IPVS CLI illustration
# kubectl describe svc nginx-service
Name: nginx-service
...
Type: ClusterIP
IP: 10.102.128.4
Port: http 3080/TCP
Endpoints: 10.244.0.235:8080,10.244.1.237:8080
Session Affinity: None
# ip addr
...
73: kube-ipvs0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 1a:ce:f5:5f:c1:4d brd ff:ff:ff:ff:ff:ff
inet 10.102.128.4/32 scope global kube-ipvs0
valid_lft forever preferred_lft forever
# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 10.102.128.4:3080 rr
-> 10.244.0.235:8080 Masq 1 0 0
-> 10.244.1.237:8080 Masq 1 0 0
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