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deploy.go
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deploy.go
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package pki
import (
"context"
"crypto/rsa"
"fmt"
"io/ioutil"
"os"
"path"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/rancher/rke/docker"
"github.com/rancher/rke/hosts"
"github.com/rancher/rke/log"
"github.com/sirupsen/logrus"
"k8s.io/client-go/util/cert"
)
func DeployCertificatesOnMasters(ctx context.Context, cpHosts []*hosts.Host, crtMap map[string]CertificatePKI, certDownloaderImage string) error {
// list of certificates that should be deployed on the masters
crtList := []string{
CACertName,
KubeAPICertName,
KubeControllerName,
KubeSchedulerName,
KubeProxyName,
KubeNodeName,
}
env := []string{}
for _, crtName := range crtList {
c := crtMap[crtName]
env = append(env, c.ToEnv()...)
}
for i := range cpHosts {
err := doRunDeployer(ctx, cpHosts[i], env, certDownloaderImage)
if err != nil {
return err
}
}
return nil
}
func DeployCertificatesOnWorkers(ctx context.Context, workerHosts []*hosts.Host, crtMap map[string]CertificatePKI, certDownloaderImage string) error {
// list of certificates that should be deployed on the workers
crtList := []string{
CACertName,
KubeProxyName,
KubeNodeName,
}
env := []string{}
for _, crtName := range crtList {
c := crtMap[crtName]
env = append(env, c.ToEnv()...)
}
for i := range workerHosts {
err := doRunDeployer(ctx, workerHosts[i], env, certDownloaderImage)
if err != nil {
return err
}
}
return nil
}
func doRunDeployer(ctx context.Context, host *hosts.Host, containerEnv []string, certDownloaderImage string) error {
// remove existing container. Only way it's still here is if previous deployment failed
isRunning := false
isRunning, err := docker.IsContainerRunning(ctx, host.DClient, host.Address, CrtDownloaderContainer, true)
if err != nil {
return err
}
if isRunning {
if err := docker.RemoveContainer(ctx, host.DClient, host.Address, CrtDownloaderContainer); err != nil {
return err
}
}
if err := docker.UseLocalOrPull(ctx, host.DClient, host.Address, certDownloaderImage, CertificatesServiceName); err != nil {
return err
}
imageCfg := &container.Config{
Image: certDownloaderImage,
Env: containerEnv,
}
hostCfg := &container.HostConfig{
Binds: []string{
"/etc/kubernetes:/etc/kubernetes",
},
Privileged: true,
}
resp, err := host.DClient.ContainerCreate(ctx, imageCfg, hostCfg, nil, CrtDownloaderContainer)
if err != nil {
return fmt.Errorf("Failed to create Certificates deployer container on host [%s]: %v", host.Address, err)
}
if err := host.DClient.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {
return fmt.Errorf("Failed to start Certificates deployer container on host [%s]: %v", host.Address, err)
}
logrus.Debugf("[certificates] Successfully started Certificate deployer container: %s", resp.ID)
for {
isDeployerRunning, err := docker.IsContainerRunning(ctx, host.DClient, host.Address, CrtDownloaderContainer, false)
if err != nil {
return err
}
if isDeployerRunning {
time.Sleep(5 * time.Second)
continue
}
if err := host.DClient.ContainerRemove(ctx, resp.ID, types.ContainerRemoveOptions{}); err != nil {
return fmt.Errorf("Failed to delete Certificates deployer container on host [%s]: %v", host.Address, err)
}
return nil
}
}
func DeployAdminConfig(ctx context.Context, kubeConfig, localConfigPath string) error {
logrus.Debugf("Deploying admin Kubeconfig locally: %s", kubeConfig)
err := ioutil.WriteFile(localConfigPath, []byte(kubeConfig), 0640)
if err != nil {
return fmt.Errorf("Failed to create local admin kubeconfig file: %v", err)
}
log.Infof(ctx, "Successfully Deployed local admin kubeconfig at [%s]", localConfigPath)
return nil
}
func RemoveAdminConfig(ctx context.Context, localConfigPath string) {
log.Infof(ctx, "Removing local admin Kubeconfig: %s", localConfigPath)
if err := os.Remove(localConfigPath); err != nil {
logrus.Warningf("Failed to remove local admin Kubeconfig file: %v", err)
return
}
log.Infof(ctx, "Local admin Kubeconfig removed successfully")
}
func DeployCertificatesOnHost(ctx context.Context, host *hosts.Host, crtMap map[string]CertificatePKI, certDownloaderImage string) error {
crtList := []string{
CACertName,
KubeAPICertName,
KubeControllerName,
KubeSchedulerName,
KubeProxyName,
KubeNodeName,
KubeAdminCommonName,
}
env := []string{
"CRTS_DEPLOY_PATH=" + TempCertPath,
}
for _, crtName := range crtList {
c := crtMap[crtName]
// We don't need to edit the cert paths, they are not used in deployment
env = append(env, c.ToEnv()...)
}
return doRunDeployer(ctx, host, env, certDownloaderImage)
}
func FetchCertificatesFromHost(ctx context.Context, host *hosts.Host, image, localConfigPath string) (map[string]CertificatePKI, error) {
// rebuilding the certificates. This should look better after refactoring pki
tmpCerts := make(map[string]CertificatePKI)
certEnvMap := map[string][]string{
CACertName: []string{CACertPath, CAKeyPath},
KubeAPICertName: []string{KubeAPICertPath, KubeAPIKeyPath},
KubeControllerName: []string{KubeControllerCertPath, KubeControllerKeyPath, KubeControllerConfigPath},
KubeSchedulerName: []string{KubeSchedulerCertPath, KubeSchedulerKeyPath, KubeSchedulerConfigPath},
KubeProxyName: []string{KubeProxyCertPath, KubeProxyKeyPath, KubeProxyConfigPath},
KubeNodeName: []string{KubeNodeCertPath, KubeNodeKeyPath, KubeNodeConfigPath},
KubeAdminCommonName: []string{"kube-admin.pem", "kube-admin-key.pem", "kubecfg-admin.yaml"},
}
// get files from hosts
for crtName, certEnv := range certEnvMap {
certificate := CertificatePKI{}
crt, err := fetchFileFromHost(ctx, getTempPath(certEnv[0]), image, host)
if err != nil {
if strings.Contains(err.Error(), "no such file or directory") ||
strings.Contains(err.Error(), "Could not find the file") {
return nil, nil
}
return nil, err
}
key, err := fetchFileFromHost(ctx, getTempPath(certEnv[1]), image, host)
if len(certEnv) > 2 {
config, err := fetchFileFromHost(ctx, getTempPath(certEnv[2]), image, host)
if err != nil {
return nil, err
}
certificate.Config = config
}
parsedCert, err := cert.ParseCertsPEM([]byte(crt))
if err != nil {
return nil, err
}
parsedKey, err := cert.ParsePrivateKeyPEM([]byte(key))
if err != nil {
return nil, err
}
certificate.Certificate = parsedCert[0]
certificate.Key = parsedKey.(*rsa.PrivateKey)
tmpCerts[crtName] = certificate
logrus.Debugf("[certificates] Recovered certificate: %s", crtName)
}
if err := docker.RemoveContainer(ctx, host.DClient, host.Address, CertFetcherContainer); err != nil {
return nil, err
}
return populateCertMap(tmpCerts, localConfigPath), nil
}
func fetchFileFromHost(ctx context.Context, filePath, image string, host *hosts.Host) (string, error) {
imageCfg := &container.Config{
Image: image,
}
hostCfg := &container.HostConfig{
Binds: []string{
"/etc/kubernetes:/etc/kubernetes",
},
Privileged: true,
}
isRunning, err := docker.IsContainerRunning(ctx, host.DClient, host.Address, CertFetcherContainer, true)
if err != nil {
return "", err
}
if !isRunning {
if err := docker.DoRunContainer(ctx, host.DClient, imageCfg, hostCfg, CertFetcherContainer, host.Address, "certificates"); err != nil {
return "", err
}
}
file, err := docker.ReadFileFromContainer(ctx, host.DClient, host.Address, CertFetcherContainer, filePath)
if err != nil {
return "", err
}
return file, nil
}
func getTempPath(s string) string {
return TempCertPath + path.Base(s)
}
func populateCertMap(tmpCerts map[string]CertificatePKI, localConfigPath string) map[string]CertificatePKI {
certs := make(map[string]CertificatePKI)
//CACert
certs[CACertName] = CertificatePKI{
Certificate: tmpCerts[CACertName].Certificate,
Key: tmpCerts[CACertName].Key,
Name: CACertName,
EnvName: CACertENVName,
KeyEnvName: CAKeyENVName,
Path: CACertPath,
KeyPath: CAKeyPath,
}
//KubeAPI
certs[KubeAPICertName] = CertificatePKI{
Certificate: tmpCerts[KubeAPICertName].Certificate,
Key: tmpCerts[KubeAPICertName].Key,
Name: KubeAPICertName,
EnvName: KubeAPICertENVName,
KeyEnvName: KubeAPIKeyENVName,
Path: KubeAPICertPath,
KeyPath: KubeAPIKeyPath,
}
//kubeController
certs[KubeControllerName] = CertificatePKI{
Certificate: tmpCerts[KubeControllerName].Certificate,
Key: tmpCerts[KubeControllerName].Key,
Config: tmpCerts[KubeControllerName].Config,
Name: KubeControllerName,
CommonName: KubeControllerCommonName,
EnvName: KubeControllerCertENVName,
KeyEnvName: KubeControllerKeyENVName,
Path: KubeControllerCertPath,
KeyPath: KubeControllerKeyPath,
ConfigEnvName: KubeControllerConfigENVName,
ConfigPath: KubeControllerConfigPath,
}
//KubeScheduler
certs[KubeSchedulerName] = CertificatePKI{
Certificate: tmpCerts[KubeSchedulerName].Certificate,
Key: tmpCerts[KubeSchedulerName].Key,
Config: tmpCerts[KubeSchedulerName].Config,
Name: KubeSchedulerName,
CommonName: KubeSchedulerCommonName,
EnvName: KubeSchedulerCertENVName,
KeyEnvName: KubeSchedulerKeyENVName,
Path: KubeSchedulerCertPath,
KeyPath: KubeSchedulerKeyPath,
ConfigEnvName: KubeSchedulerConfigENVName,
ConfigPath: KubeSchedulerConfigPath,
}
// KubeProxy
certs[KubeProxyName] = CertificatePKI{
Certificate: tmpCerts[KubeProxyName].Certificate,
Key: tmpCerts[KubeProxyName].Key,
Config: tmpCerts[KubeProxyName].Config,
Name: KubeProxyName,
CommonName: KubeProxyCommonName,
EnvName: KubeProxyCertENVName,
Path: KubeProxyCertPath,
KeyEnvName: KubeProxyKeyENVName,
KeyPath: KubeProxyKeyPath,
ConfigEnvName: KubeProxyConfigENVName,
ConfigPath: KubeProxyConfigPath,
}
// KubeNode
certs[KubeNodeName] = CertificatePKI{
Certificate: tmpCerts[KubeNodeName].Certificate,
Key: tmpCerts[KubeNodeName].Key,
Config: tmpCerts[KubeNodeName].Config,
Name: KubeNodeName,
CommonName: KubeNodeCommonName,
OUName: KubeNodeOrganizationName,
EnvName: KubeNodeCertENVName,
KeyEnvName: KubeNodeKeyENVName,
Path: KubeNodeCertPath,
KeyPath: KubeNodeKeyPath,
ConfigEnvName: KubeNodeConfigENVName,
ConfigPath: KubeNodeCommonName,
}
certs[KubeAdminCommonName] = CertificatePKI{
Certificate: tmpCerts[KubeAdminCommonName].Certificate,
Key: tmpCerts[KubeAdminCommonName].Key,
Config: tmpCerts[KubeAdminCommonName].Config,
CommonName: KubeAdminCommonName,
OUName: KubeAdminOrganizationName,
ConfigEnvName: KubeAdminConfigENVName,
ConfigPath: localConfigPath,
EnvName: KubeAdminCertEnvName,
KeyEnvName: KubeAdminKeyEnvName,
}
return certs
}