gophercloud-nova-getting-started.go

package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"github.com/gophercloud/gophercloud"
	"github.com/gophercloud/gophercloud/openstack"
	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
)

func main() {

	// Get OpenStack auth values from environment
	authOpts, err := openstack.AuthOptionsFromEnv()
	if err != nil {
		log.Println(err)
		return
	}

	// Autenticate into OpenStack
	provider, err := openstack.AuthenticatedClient(authOpts)
	if err != nil {
		log.Println(err)
		return
	}

	// Create the service client for interact with swift
	var regionName = os.Getenv("OS_REGION_NAME")
	computeClient, err := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{
		Region: regionName,
	})
	if err != nil {
		log.Println(err)
		return
	}

	// Script to execute after the instance creation
	userData := fmt.Sprintf(`#!/usr/bin/env bash
		wget https://gist.githubusercontent.com/MBonell/eb7c8ff166077f742a1157d89293b339/raw/611b5eb7e95ab773a4675e1b6dcdd851941d903c/init.sh
		bash init.sh`)

	// Create a worker instance
	log.Println("Creating web server and deploying website...")
	server, err := servers.Create(computeClient, servers.CreateOpts{
		Name:           "webserver-" + time.Now().Format("2006-01-02-15:04:05"),
		FlavorRef:      "92416632-fece-42f0-a6a4-70b2d416fa1d",
		ImageRef:       "bcc83dea-fa28-46f4-bafe-5b95990afa84",
		SecurityGroups: []string{"web"},
		UserData:       []byte(userData),
	}).Extract()

	if err != nil {
		log.Println("[Error] Unable to create web server: " + err.Error())
		return
	}

	log.Println("[Success] Web server created!, ID: " + server.ID)

}