Rocket Tutorial

package main

import (
    "log"
    "net/http"
)

func main() {
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        log.Printf("request from %v\n", r.RemoteAddr)
        w.Write([]byte("hello\n"))
    })
    log.Fatal(http.ListenAndServe(":5000", nil))
}

CGO_ENABLED=0 GOOS=linux go build -a -tags netgo -ldflags '-w' .

{
    "acVersion": "1.0.0",
    "acKind": "AppManifest",
    "name": "coreos.com/hello-1.0.0",
    "os": "linux",
    "arch": "amd64",
    "exec": [
        "/bin/hello"
    ],
    "ports": [
        {
            "name": "www",
            "protocol": "tcp",
            "port": 5000
        }
    ],
    "annotations": {
        "authors": "Kelsey Hightower <kelsey.hightower@gmail.com>"
    }
}

actool validate manifest.json

mkdir rootfs
mkdir rootfs/bin

cp hello rootfs/bin/

actool build --app-manifest manifest.json rootfs hello.aci

actool validate hello.aci

Launch a local application image

rkt run hello.aci

Testing with curl

curl 127.0.0.1:5000

Hosting App Container Images

Install a webserver

brew install nginx
nginx

Copy the binary

scp core@192.168.2.136:~/hello/hello.aci .
mv hello.aci /usr/local/var/www/

Run it.

rkt run http://192.168.2.1:8080/hello.aci

Launch a Docker Container with Rocket

Download and export a Docker Container

docker pull coreos/etcd

docker run --name=etcd coreos/etcd

Export the Docker Container

mkdir rootfs

docker export etcd | sudo tar -x -C rootfs -f -

Create the app manifest

{
    "acVersion": "1.0.0",
    "acKind": "AppManifest",
    "name": "coreos.com/etcd",
    "os": "linux",
    "arch": "amd64",
    "exec": [
        "/etcd -name node0"
    ],
    "ports": [
        {
            "name": "etcdclient",
            "protocol": "tcp",
            "port": 4001
        },
        {
            "name": "etcdraft",
            "protocol": "tcp",
            "port": 7001
        }

    ],
    "annotations": {
        "authors": "Kelsey Hightower <kelsey.hightower@gmail.com>"
    }
}

Build the container

actool build --app-manifest manifest.json rootfs etcd.aci

Launch the container with Rocket

sudo rkt run etcd.aci