Set up kubernetes components

services/kubeproxy.go

@@ -0,0 +1,73 @@
+package services
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/rancher/rke/hosts"
+)
+
+type Kubeproxy struct {
+	Version string `yaml:"version"`
+	Image   string `yaml:"image"`
+}
+
+func runKubeproxy(host hosts.Host, masterHost hosts.Host, kubeproxyService Kubeproxy) error {
+	isRunning, err := IsContainerRunning(host, KubeproxyContainerName)
+	if err != nil {
+		return err
+	}
+	if isRunning {
+		logrus.Infof("[WorkerPlane] Kubeproxy is already running on host [%s]", host.Hostname)
+		return nil
+	}
+	err = runKubeproxyContainer(host, masterHost, kubeproxyService)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func runKubeproxyContainer(host hosts.Host, masterHost hosts.Host, kubeproxyService Kubeproxy) error {
+	logrus.Debugf("[WorkerPlane] Pulling KubeProxy Image on host [%s]", host.Hostname)
+	err := PullImage(host, kubeproxyService.Image+":"+kubeproxyService.Version)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("[WorkerPlane] Successfully pulled KubeProxy image on host [%s]", host.Hostname)
+
+	err = doRunKubeProxy(host, masterHost, kubeproxyService)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("[WorkerPlane] Successfully ran KubeProxy container on host [%s]", host.Hostname)
+	return nil
+}
+
+func doRunKubeProxy(host hosts.Host, masterHost hosts.Host, kubeproxyService Kubeproxy) error {
+	imageCfg := &container.Config{
+		Image: kubeproxyService.Image + ":" + kubeproxyService.Version,
+		Cmd: []string{"/hyperkube",
+			"proxy",
+			"--v=2",
+			"--healthz-bind-address=0.0.0.0",
+			"--master=http://" + masterHost.IP + ":8080/"},
+	}
+	hostCfg := &container.HostConfig{
+		NetworkMode:   "host",
+		RestartPolicy: container.RestartPolicy{Name: "always"},
+		Privileged:    true,
+	}
+	resp, err := host.DClient.ContainerCreate(context.Background(), imageCfg, hostCfg, nil, KubeproxyContainerName)
+	if err != nil {
+		return fmt.Errorf("Failed to create KubeProxy container on host [%s]: %v", host.Hostname, err)
+	}
+	if err := host.DClient.ContainerStart(context.Background(), resp.ID, types.ContainerStartOptions{}); err != nil {
+		return fmt.Errorf("Failed to start KubeProxy container on host [%s]: %v", host.Hostname, err)
+	}
+	logrus.Debugf("[WorkerPlane] Successfully started KubeProxy container: %s", resp.ID)
+	return nil
+}