toy-k8s

README

toy-k8s

(学習用)自作k8s

Kubernetes is a system for automating deployment, scaling, and management of containerized applications. This is a repository to learn how the components of a Kubernetes cluster works.

Local up example

Install etcd

Older etcd is needed. I use etcd v0.4.2

Build binaries

./src/scripts/build-go.sh

Run a local kubernetes cluster

(sudo) ./src/scripts/local-up-cluster.sh

Create a nginx pod

{
  "id": "nginxController",
  "desiredState": {
    "replicas": 1,
    "replicasInSet": {"name": "nginx"},
    "taskTemplate": {
      "desiredState": {
        "manifest": {
          "containers": [{
            "name": "nginx",
            "image": "nginx",
            "ports": [{"containerPort": 80, "hostPort": 8888}]
          }]
        }
      },
      "labels": {"name": "nginx"}
    }
  },
  "labels": {"name": "nginx"}
}

Note: one replica is only created on local.

(sudo) ./bin/cloudcfg -h http://127.0.0.1:8080 -c examples/nginx-controller.json create /replicationControllers

Check your running containers

docker ps

Delete the nginx container

docker kill [CONTAINER]

Wait a few seconds, check containers again

docker ps

References

• kubernetes/kubernetes - 2c4b3a5