Analysis of the whole architecture of Kubernetes source code reading

Kubernetes is Google open source Docker container Cluster Management system, for the container of the application of resource scheduling, deployment operations, service discovery, expansion shrink capacity, such as a whole set of functions.

The composition of the entire k8s frame is shown below

The entire k8s architecture consists of two components: Master (APIs, Scheduler, replication Controller) and agents (Kubelet, proxy)

Explain the role of each one individually:

1.kubelet: Manage containers, mirrors, already used storage

2.kube-proxy: Each node runs this network proxy, which provides a load-balanced, proxy service Clusterip for the service. Essence through Iptables jump

3.apis is to provide API Access interface services

4.scheduler: Is the dispatch service, the support plug-in scheduling strategy is very convenient

5.controller Manager (mainly RC) to manage the number of RC life cycle, as well as node management services.

The detailed content is analyzed below.