Act 1 · The daemon
Two informers · one syncProxyRules() loop
api-server
Services
EndpointSlices
kube-proxy
syncProxyRules() · idle
Linux kernel · netfilter
iptables·IPVS·nftables
cmd/kube-proxy · pkg/proxy · runs on every node as a DaemonSet
1 / 3A Service or EndpointSlice changes. The two informers fire watch events into kube-proxy.
Step 01 · controller-manager
What kube-proxy is