|
| 1 | +package router |
| 2 | + |
| 3 | +import ( |
| 4 | + "bytes" |
| 5 | + "fmt" |
| 6 | + "io" |
| 7 | + "io/ioutil" |
| 8 | + "os" |
| 9 | + "path" |
| 10 | + "path/filepath" |
| 11 | + |
| 12 | + "github.com/golang/glog" |
| 13 | + "k8s.io/client-go/util/retry" |
| 14 | + |
| 15 | + apierrors "k8s.io/apimachinery/pkg/api/errors" |
| 16 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 17 | + "k8s.io/apiserver/pkg/authentication/serviceaccount" |
| 18 | + kclientcmd "k8s.io/client-go/tools/clientcmd" |
| 19 | + kapi "k8s.io/kubernetes/pkg/apis/core" |
| 20 | + kclientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset" |
| 21 | + |
| 22 | + "github.com/openshift/origin/pkg/cmd/server/admin" |
| 23 | + "github.com/openshift/origin/pkg/oc/bootstrap/clusterup/componentinstall" |
| 24 | + "github.com/openshift/origin/pkg/oc/bootstrap/docker/dockerhelper" |
| 25 | + "github.com/openshift/origin/pkg/oc/bootstrap/docker/run" |
| 26 | + "github.com/openshift/origin/pkg/oc/errors" |
| 27 | + securityclientinternal "github.com/openshift/origin/pkg/security/generated/internalclientset" |
| 28 | +) |
| 29 | + |
| 30 | +const ( |
| 31 | + DefaultNamespace = "default" |
| 32 | + RouterServiceAccountName = "router" |
| 33 | + RouterServiceName = "router" |
| 34 | +) |
| 35 | + |
| 36 | +type RouterComponentOptions struct { |
| 37 | + OCImage string |
| 38 | + MasterConfigDir string |
| 39 | + ImageFormat string |
| 40 | + PublicMasterURL string |
| 41 | + RoutingSuffix string |
| 42 | + PortForwarding bool |
| 43 | +} |
| 44 | + |
| 45 | +func (c *RouterComponentOptions) Name() string { |
| 46 | + return "openshift-router" |
| 47 | +} |
| 48 | + |
| 49 | +func (c *RouterComponentOptions) Install(dockerClient dockerhelper.Interface, logdir string) error { |
| 50 | + clusterAdminKubeConfigBytes, err := ioutil.ReadFile(path.Join(c.MasterConfigDir, "admin.kubeconfig")) |
| 51 | + if err != nil { |
| 52 | + return err |
| 53 | + } |
| 54 | + restConfig, err := kclientcmd.RESTConfigFromKubeConfig(clusterAdminKubeConfigBytes) |
| 55 | + if err != nil { |
| 56 | + return err |
| 57 | + } |
| 58 | + kubeClient, err := kclientset.NewForConfig(restConfig) |
| 59 | + if err != nil { |
| 60 | + return err |
| 61 | + } |
| 62 | + _, err = kubeClient.Core().Services(DefaultNamespace).Get(RouterServiceName, metav1.GetOptions{}) |
| 63 | + if err == nil { |
| 64 | + glog.V(3).Infof("The %q service is already present, skipping installation", RouterServiceName) |
| 65 | + // Router service already exists, nothing to do |
| 66 | + return nil |
| 67 | + } |
| 68 | + if !apierrors.IsNotFound(err) { |
| 69 | + return errors.NewError("error retrieving router service").WithCause(err) |
| 70 | + } |
| 71 | + |
| 72 | + componentName := "install-router" |
| 73 | + imageRunHelper := run.NewRunHelper(dockerhelper.NewHelper(dockerClient)).New() |
| 74 | + glog.Infof("Running %q", componentName) |
| 75 | + |
| 76 | + // Create service account for router |
| 77 | + routerSA := &kapi.ServiceAccount{} |
| 78 | + routerSA.Name = RouterServiceAccountName |
| 79 | + _, err = kubeClient.Core().ServiceAccounts("default").Create(routerSA) |
| 80 | + if err != nil { |
| 81 | + return errors.NewError("cannot create router service account").WithCause(err) |
| 82 | + } |
| 83 | + |
| 84 | + // Add router SA to privileged SCC |
| 85 | + err = retry.RetryOnConflict(retry.DefaultRetry, func() error { |
| 86 | + securityClient, err := securityclientinternal.NewForConfig(restConfig) |
| 87 | + if err != nil { |
| 88 | + return err |
| 89 | + } |
| 90 | + privilegedSCC, err := securityClient.Security().SecurityContextConstraints().Get("privileged", metav1.GetOptions{}) |
| 91 | + if err != nil { |
| 92 | + return err |
| 93 | + } |
| 94 | + privilegedSCC.Users = append(privilegedSCC.Users, serviceaccount.MakeUsername("default", RouterServiceAccountName)) |
| 95 | + _, err = securityClient.Security().SecurityContextConstraints().Update(privilegedSCC) |
| 96 | + if err != nil { |
| 97 | + return err |
| 98 | + } |
| 99 | + return nil |
| 100 | + }) |
| 101 | + if err != nil { |
| 102 | + return errors.NewError("cannot update privileged SCC").WithCause(err) |
| 103 | + } |
| 104 | + |
| 105 | + // Create router cert |
| 106 | + cmdOutput := &bytes.Buffer{} |
| 107 | + createCertOptions := &admin.CreateServerCertOptions{ |
| 108 | + SignerCertOptions: &admin.SignerCertOptions{ |
| 109 | + CertFile: filepath.Join(c.MasterConfigDir, "ca.crt"), |
| 110 | + KeyFile: filepath.Join(c.MasterConfigDir, "ca.key"), |
| 111 | + SerialFile: filepath.Join(c.MasterConfigDir, "ca.serial.txt"), |
| 112 | + }, |
| 113 | + Overwrite: true, |
| 114 | + Hostnames: []string{ |
| 115 | + c.RoutingSuffix, |
| 116 | + // This will ensure that routes using edge termination and the default |
| 117 | + // certs will use certs valid for their arbitrary subdomain names. |
| 118 | + fmt.Sprintf("*.%s", c.RoutingSuffix), |
| 119 | + }, |
| 120 | + CertFile: filepath.Join(c.MasterConfigDir, "router.crt"), |
| 121 | + KeyFile: filepath.Join(c.MasterConfigDir, "router.key"), |
| 122 | + Output: cmdOutput, |
| 123 | + } |
| 124 | + _, err = createCertOptions.CreateServerCert() |
| 125 | + if err != nil { |
| 126 | + return errors.NewError("cannot create router cert").WithCause(err) |
| 127 | + } |
| 128 | + |
| 129 | + err = catFiles(filepath.Join(c.MasterConfigDir, "router.pem"), |
| 130 | + filepath.Join(c.MasterConfigDir, "router.crt"), |
| 131 | + filepath.Join(c.MasterConfigDir, "router.key"), |
| 132 | + filepath.Join(c.MasterConfigDir, "ca.crt")) |
| 133 | + if err != nil { |
| 134 | + return errors.NewError("cannot create aggregate router cert").WithCause(err) |
| 135 | + } |
| 136 | + |
| 137 | + routerCertPath := c.MasterConfigDir + "/router.pem" |
| 138 | + flags := []string{ |
| 139 | + "adm", "router", |
| 140 | + "--host-ports=true", |
| 141 | + "--loglevel=8", |
| 142 | + "--config=" + c.MasterConfigDir + "/admin.kubeconfig", |
| 143 | + fmt.Sprintf("--host-network=%v", !c.PortForwarding), |
| 144 | + fmt.Sprintf("--images=%s", c.ImageFormat), |
| 145 | + fmt.Sprintf("--default-cert=%s", routerCertPath), |
| 146 | + } |
| 147 | + _, stdout, stderr, rc, err := imageRunHelper.Image(c.OCImage). |
| 148 | + Privileged(). |
| 149 | + DiscardContainer(). |
| 150 | + HostNetwork(). |
| 151 | + Bind(c.MasterConfigDir + ":" + c.MasterConfigDir). |
| 152 | + Entrypoint("oc"). |
| 153 | + Command(flags...).Output() |
| 154 | + |
| 155 | + if err := componentinstall.LogContainer(logdir, componentName, stdout, stderr); err != nil { |
| 156 | + glog.Errorf("error logging %q: %v", componentName, err) |
| 157 | + } |
| 158 | + if err != nil { |
| 159 | + return errors.NewError("could not run %q: %v", componentName, err).WithCause(err) |
| 160 | + } |
| 161 | + if rc != 0 { |
| 162 | + return errors.NewError("could not run %q: rc==%v", componentName, rc) |
| 163 | + } |
| 164 | + return nil |
| 165 | +} |
| 166 | + |
| 167 | +// catFiles concatenates multiple source files into a single destination file |
| 168 | +func catFiles(dest string, src ...string) error { |
| 169 | + out, err := os.Create(dest) |
| 170 | + if err != nil { |
| 171 | + return err |
| 172 | + } |
| 173 | + defer out.Close() |
| 174 | + for _, f := range src { |
| 175 | + in, oerr := os.Open(f) |
| 176 | + if oerr != nil { |
| 177 | + return err |
| 178 | + } |
| 179 | + _, err = io.Copy(out, in) |
| 180 | + in.Close() |
| 181 | + if err != nil { |
| 182 | + return err |
| 183 | + } |
| 184 | + } |
| 185 | + return nil |
| 186 | +} |
0 commit comments