参考文档: Difficulties with traditional overlay networks:https://www.projectcalico.org/learn/ Get Start(v2.6.x):https://docs.projectcalico.org/v2.6/getting-started/docker/ Calico组件(v2.6.x):https://docs.projectcalico.org/v2.6/reference/architecture/ 配置cal
1.k8s网络通信 a.容器间通信:同一个pod内的多个容器间的通信,通过lo即可实现; b.pod之间的通信:pod ip <---> pod ip,pod和pod之间不经过任何转换即可通信; c.pod和service通信:pod ip <----> cluster ip(即service ip)<---->pod ip,它们通过iptables或ipvs实现通信,ipvs取代不了iptables,因为ipvs只能做负载均衡,而做不了nat转换; d.Service