root@cloud:~# ip a | grep 10.96.0.1 -B 3 valid_lft forever preferred_lft forever 59: kube-ipvs0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default link/ether 96:74:f2:7e:e4:f4 brd ff:ff:ff:ff:ff:ff inet 10.96.0.1/32 brd 10.96.0.1 scope global kube-ipvs0 valid_lft forever preferred_lft forever inet 10.96.0.10/32 brd 10.96.0.10 scope global kube-ipvs0 root@cloud:~# netstat -pan | grep 10.96.0.1 tcp 0 0 10.96.0.1:58474 10.96.0.1:443 ESTABLISHED 830063/calico-node tcp 0 0 10.96.0.1:58476 10.96.0.1:443 ESTABLISHED 830064/calico-node tcp 0 0 10.96.0.1:58480 10.96.0.1:443 ESTABLISHED 830067/calico-node root@cloud:~# netstat -pan | grep 443 tcp 0 0 0.0.0.0:9443 0.0.0.0:* LISTEN 168010/haproxy tcp 0 0 10.96.0.1:58474 10.96.0.1:443 ESTABLISHED 830063/calico-node tcp 0 0 10.96.0.1:58476 10.96.0.1:443 ESTABLISHED 830064/calico-node tcp 0 0 10.96.0.1:58480 10.96.0.1:443 ESTABLISHED 830067/calico-node tcp 0 0 10.10.16.47:35158 10.10.16.249:6443 ESTABLISHED 827774/kube-schedul tcp 0 0 10.10.16.47:34736 10.10.16.249:6443 ESTABLISHED 826967/kubelet tcp 0 0 10.10.16.47:34732 10.10.16.249:6443 ESTABLISHED 827629/kube-proxy tcp 0 0 10.10.16.47:34782 10.10.16.249:6443 ESTABLISHED 827622/kube-control tcp 0 0 10.10.16.47:35160 10.10.16.249:6443 ESTABLISHED 827774/kube-schedul tcp 0 1 10.10.16.47:37918 10.10.18.46:6443 SYN_SENT 168010/haproxy tcp6 0 0 :::6443 :::* LISTEN 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.47:42777 ESTABLISHED 827911/kube-apiserv tcp6 0 0 ::1:6443 ::1:52242 ESTABLISHED 827911/kube-apiserv tcp6 0 0 ::1:52242 ::1:6443 ESTABLISHED 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.82:47963 ESTABLISHED 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.251:15060 ESTABLISHED 827911/kube-apiserv unix 2 [ ACC ] STREAM LISTENING 55409443 337187/systemd /run/user/0/gnupg/S.gpg-agent unix 2 [ ACC ] STREAM LISTENING 51485076 827574/containerd-s @/containerd-shim/38931443d2bc0c80370a06127267236ac8c8bc9683e0c32a9ec332e873d49a99.sock@ unix 2 [ ACC ] STREAM LISTENING 51529817 827727/containerd-s @/containerd-shim/e306d59c5aaabc84814430beeb6045b2b9fe0a048974bc3eb92bd2863d302d50.sock@ unix 3 [ ] STREAM CONNECTED 51517569 827727/containerd-s @/containerd-shim/e306d59c5aaabc84814430beeb6045b2b9fe0a048974bc3eb92bd2863d302d50.sock@ unix 3 [ ] STREAM CONNECTED 51503194 827574/containerd-s @/containerd-shim/38931443d2bc0c80370a06127267236ac8c8bc9683e0c32a9ec332e873d49a99.sock@ root@cloud:~# kubectl get svc -o wide NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18h <none> root@cloud:~#
root@cloud:~# kubectl describe svc/kubernetes Name: kubernetes Namespace: default Labels: component=apiserver provider=kubernetes Annotations: <none> Selector: <none> Type: ClusterIP IP: 10.96.0.1 Port: https 443/TCP TargetPort: 6443/TCP Endpoints: 10.10.16.251:6443,10.10.16.47:6443,10.10.16.82:6443 Session Affinity: None Events: <none> root@cloud:~#
root@cloud:~# netstat -pan | grep 6443 tcp 0 0 10.10.16.47:35158 10.10.16.249:6443 ESTABLISHED 827774/kube-schedul tcp 0 0 10.10.16.47:34736 10.10.16.249:6443 ESTABLISHED 826967/kubelet tcp 0 0 10.10.16.47:34732 10.10.16.249:6443 ESTABLISHED 827629/kube-proxy tcp 0 0 10.10.16.47:34782 10.10.16.249:6443 ESTABLISHED 827622/kube-control tcp 0 0 10.10.16.47:35160 10.10.16.249:6443 ESTABLISHED 827774/kube-schedul tcp6 0 0 :::6443 :::* LISTEN 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.47:42777 ESTABLISHED 827911/kube-apiserv tcp6 0 0 ::1:6443 ::1:52242 ESTABLISHED 827911/kube-apiserv tcp6 0 0 ::1:52242 ::1:6443 ESTABLISHED 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.82:47963 ESTABLISHED 827911/kube-apiserv tcp6 0 0 10.10.16.47:6443 10.10.16.251:15060 ESTABLISHED 827911/kube-apiserv root@cloud:~# ps -elf | grep