rkt与Kubernetes的深度融合.pdf

Container, rkt, Kubernetes 顾宜凡 (Yifan Gu) Software Engineer @ CoreOS /yifan-gu Overview 1. Containers, OCI, Appc 2. rkt 3. Kubernetes, and rkt + Kubernetes Container Is HOT Container is not a new technology, Why? So, what is container? Container = Docker ? So, what is container? Control group Namespaces - CPU - Network - Memory - IO - IPC - Devices - ProcessID - ... - ... - So, what is container? Container = Docker ? No So, what is container? Container = Docker ? No Container = cgroup + namespace ? No So, what is container? FreeBSD ~ 2000 Solaris Zones ~ 2005 So, what is container? Container = package + runtime ! So, what is container? Container = package + runtime ! ● Easy packaging (build/push/pull) ● Isolated, controlled (run/stop) If it’s hot, then standardize it If it’s hot, then standardize it Container ~ 1950 Container ~ 2010 Container Spec Timeline 2013.3 2014.12 2015.6 2016.3 Docker 1.0 Appc 0.1 OCI (Runtime OCI (Image Spec) Spec) Container Spe Open Container Specifications - Runtime Spec - Image Spec - config.json - started from Docker v2 - runtime.json - absorb from Appc - rootfs