Set up kubernetes components

2025-09-08 18:39:40 +00:00 · 2017-10-29 11:45:21 +02:00
parent 84d02e8b42
commit f7649289d4
15 changed files with 987 additions and 7 deletions
--- a/services/kubeapi.go
+++ b/services/kubeapi.go
@@ -0,0 +1,90 @@
+package services
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/go-connections/nat"
+	"github.com/rancher/rke/hosts"
+)
+
+type KubeAPI struct {
+	Version string `yaml:"version"`
+	Image   string `yaml:"image"`
+}
+
+func runKubeAPI(host hosts.Host, etcdHosts []hosts.Host, kubeAPIService KubeAPI) error {
+	isRunning, err := IsContainerRunning(host, KubeAPIContainerName)
+	if err != nil {
+		return err
+	}
+	if isRunning {
+		logrus.Infof("[ControlPlane] KubeAPI is already running on host [%s]", host.Hostname)
+		return nil
+	}
+	etcdConnString := getEtcdConnString(etcdHosts)
+	err = runKubeAPIContainer(host, kubeAPIService, etcdConnString)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func runKubeAPIContainer(host hosts.Host, kubeAPIService KubeAPI, etcdConnString string) error {
+	logrus.Debugf("[ControlPlane] Pulling Kube API Image on host [%s]", host.Hostname)
+	err := PullImage(host, kubeAPIService.Image+":"+kubeAPIService.Version)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("[ControlPlane] Successfully pulled Kube API image on host [%s]", host.Hostname)
+	err = doRunKubeAPI(host, kubeAPIService, etcdConnString)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("[ControlPlane] Successfully ran Kube API container on host [%s]", host.Hostname)
+	return nil
+}
+
+func doRunKubeAPI(host hosts.Host, kubeAPIService KubeAPI, etcdConnString string) error {
+	imageCfg := &container.Config{
+		Image: kubeAPIService.Image + ":" + kubeAPIService.Version,
+		Cmd: []string{"/hyperkube",
+			"apiserver",
+			"--insecure-bind-address=0.0.0.0",
+			"--insecure-port=8080",
+			"--cloud-provider=",
+			"--allow_privileged=true",
+			"--service-cluster-ip-range=10.233.0.0/18",
+			"--admission-control=NamespaceLifecycle,LimitRanger,PersistentVolumeLabel,DefaultStorageClass,ResourceQuota,DefaultTolerationSeconds",
+			"--runtime-config=batch/v2alpha1",
+			"--runtime-config=authentication.k8s.io/v1beta1=true",
+			"--storage-backend=etcd3",
+			"--etcd-servers=" + etcdConnString,
+			"--advertise-address=" + host.IP},
+	}
+	hostCfg := &container.HostConfig{
+		NetworkMode:   "host",
+		RestartPolicy: container.RestartPolicy{Name: "always"},
+		PortBindings: nat.PortMap{
+			"8080/tcp": []nat.PortBinding{
+				{
+					HostIP:   "0.0.0.0",
+					HostPort: "8080",
+				},
+			},
+		},
+	}
+	resp, err := host.DClient.ContainerCreate(context.Background(), imageCfg, hostCfg, nil, KubeAPIContainerName)
+	if err != nil {
+		return fmt.Errorf("Failed to create Kube API 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 Kube API container on host [%s]: %v", host.Hostname, err)
+	}
+	logrus.Debugf("[ControlPlane] Successfully started Kube API container: %s", resp.ID)
+	return nil
+}