libcarina

libcarina

Provisional Go bindings for the beta release of Carina by Rackspace. The carina client source code can be found at https://github.com/getcarina/carina.

Examples

Create

Create a new cluster

package main

import (
	"time"

	"github.com/getcarina/libcarina"
)

func createCluster(username string, apikey string, clusterName string) error {
	// Connect to Carina
	cli, _ := libcarina.NewClusterClient(libcarina.BetaEndpoint, username, apikey, "")

	// Create a new cluster
	cluster, err := cli.Create(libcarina.Cluster{
	    Name: clusterName,
	    ClusterTypeId: 1,
	})

	// Wait for the cluster to become active
	for cluster.Status == "creating" {
		time.Sleep(10 * time.Second)
		cluster, err = cli.Get(cluster.ID)
	}

	return err
}

Swarm

Connect to a Docker Swarm cluster

package main

import (
	"fmt"
	"os"
	"time"

	"github.com/getcarina/libcarina"
	"github.com/samalba/dockerclient"
)

func connectCluster(username string, apikey string, clusterID string) {
	// Connect to Carina
	cli, _ := libcarina.NewClusterClient(libcarina.BetaEndpoint, username, apikey, "")

	// Download the cluster credentials
	creds, _ := cli.GetCredentials(clusterID)

	// Get the IP of the host and the TLS configuration
	host, _ := creds.ParseHost()
	cfg, _ := creds.GetTLSConfig()

	// Do the Dockers!
	docker, _ := dockerclient.NewDockerClient(host, cfg)
	info, _ := docker.Info()
	fmt.Println(info)
}

Kubernetes

Connect to a Kubernetes cluster

package main

import (
	"fmt"
	"github.com/getcarina/libcarina"

	client "k8s.io/kubernetes/pkg/client/unversioned"
	"k8s.io/kubernetes/pkg/client/restclient"
	"k8s.io/kubernetes/pkg/api"
)

func connectCluster(username string, apikey string, clusterID string) {
	// Connect to Carina
	cli, _ := libcarina.NewClusterClient(libcarina.BetaEndpoint, username, apikey, "")

	// Download the cluster credentials
	creds, _ := cli.GetCredentials(clusterID)

	// K8s stuff and things!
	k8cfg := &restclient.Config{
		Host:     creds.ParseHost(),
		CertData: creds.Cert,
		CAData:   creds.CA,
		KeyData:  creds.Key,
	}
	client, err := client.New(config)
	pods, err := client.Pods(api.NamespaceDefault).List(api.ListOptions{})
	
	return err
}