3.3 Services Deep Dive - How They Really Work

Understand the internal mechanics of Services and kube-proxy. Service VIP (Virtual IP) allocation from service CIDR kube-proxy modes: userspace, iptables, IPVS How iptables mode works: NAT rules, connection tracking IPVS advantages: performance, load balancing algorithms Service session affinity: ClientIP, None ExternalTrafficPolicy: Cluster vs Local (and implications) DNS for Services Headless Services: when you don't want load balancing