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/
utils.go
224 lines (184 loc) · 5.84 KB
/
utils.go
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package provision
import (
"fmt"
"io/ioutil"
"net/url"
"path"
"path/filepath"
"regexp"
"strconv"
"strings"
"time"
"github.com/docker/machine/libmachine/auth"
"github.com/docker/machine/libmachine/cert"
"github.com/docker/machine/libmachine/log"
"github.com/docker/machine/libmachine/mcnutils"
"github.com/docker/machine/libmachine/provision/serviceaction"
)
type DockerOptions struct {
EngineOptions string
EngineOptionsPath string
}
func installDockerGeneric(p Provisioner, baseURL string) error {
// install docker - until cloudinit we use ubuntu everywhere so we
// just install it using the docker repos
if output, err := p.SSHCommand(fmt.Sprintf("if ! type docker; then curl -sSL %s | sh -; fi", baseURL)); err != nil {
return fmt.Errorf("error installing docker: %s\n", output)
}
return nil
}
func makeDockerOptionsDir(p Provisioner) error {
dockerDir := p.GetDockerOptionsDir()
if _, err := p.SSHCommand(fmt.Sprintf("sudo mkdir -p %s", dockerDir)); err != nil {
return err
}
return nil
}
func setRemoteAuthOptions(p Provisioner) auth.Options {
dockerDir := p.GetDockerOptionsDir()
authOptions := p.GetAuthOptions()
// due to windows clients, we cannot use filepath.Join as the paths
// will be mucked on the linux hosts
authOptions.CaCertRemotePath = path.Join(dockerDir, "ca.pem")
authOptions.ServerCertRemotePath = path.Join(dockerDir, "server.pem")
authOptions.ServerKeyRemotePath = path.Join(dockerDir, "server-key.pem")
return authOptions
}
func ConfigureAuth(p Provisioner) error {
var (
err error
)
driver := p.GetDriver()
machineName := driver.GetMachineName()
authOptions := p.GetAuthOptions()
org := mcnutils.GetUsername() + "." + machineName
bits := 2048
ip, err := driver.GetIP()
if err != nil {
return err
}
log.Info("Copying certs to the local machine directory...")
if err := mcnutils.CopyFile(authOptions.CaCertPath, filepath.Join(authOptions.StorePath, "ca.pem")); err != nil {
return fmt.Errorf("Copying ca.pem to machine dir failed: %s", err)
}
if err := mcnutils.CopyFile(authOptions.ClientCertPath, filepath.Join(authOptions.StorePath, "cert.pem")); err != nil {
return fmt.Errorf("Copying cert.pem to machine dir failed: %s", err)
}
if err := mcnutils.CopyFile(authOptions.ClientKeyPath, filepath.Join(authOptions.StorePath, "key.pem")); err != nil {
return fmt.Errorf("Copying key.pem to machine dir failed: %s", err)
}
log.Debugf("generating server cert: %s ca-key=%s private-key=%s org=%s",
authOptions.ServerCertPath,
authOptions.CaCertPath,
authOptions.CaPrivateKeyPath,
org,
)
// TODO: Switch to passing just authOptions to this func
// instead of all these individual fields
err = cert.GenerateCert(
[]string{ip, "localhost"},
authOptions.ServerCertPath,
authOptions.ServerKeyPath,
authOptions.CaCertPath,
authOptions.CaPrivateKeyPath,
org,
bits,
)
if err != nil {
return fmt.Errorf("error generating server cert: %s", err)
}
if err := p.Service("docker", serviceaction.Stop); err != nil {
return err
}
// upload certs and configure TLS auth
caCert, err := ioutil.ReadFile(authOptions.CaCertPath)
if err != nil {
return err
}
serverCert, err := ioutil.ReadFile(authOptions.ServerCertPath)
if err != nil {
return err
}
serverKey, err := ioutil.ReadFile(authOptions.ServerKeyPath)
if err != nil {
return err
}
log.Info("Copying certs to the remote machine...")
// printf will choke if we don't pass a format string because of the
// dashes, so that's the reason for the '%%s'
certTransferCmdFmt := "printf '%%s' '%s' | sudo tee %s"
// These ones are for Jessie and Mike <3 <3 <3
if _, err := p.SSHCommand(fmt.Sprintf(certTransferCmdFmt, string(caCert), authOptions.CaCertRemotePath)); err != nil {
return err
}
if _, err := p.SSHCommand(fmt.Sprintf(certTransferCmdFmt, string(serverCert), authOptions.ServerCertRemotePath)); err != nil {
return err
}
if _, err := p.SSHCommand(fmt.Sprintf(certTransferCmdFmt, string(serverKey), authOptions.ServerKeyRemotePath)); err != nil {
return err
}
dockerURL, err := driver.GetURL()
if err != nil {
return err
}
u, err := url.Parse(dockerURL)
if err != nil {
return err
}
dockerPort := 2376
parts := strings.Split(u.Host, ":")
if len(parts) == 2 {
dPort, err := strconv.Atoi(parts[1])
if err != nil {
return err
}
dockerPort = dPort
}
dkrcfg, err := p.GenerateDockerOptions(dockerPort)
if err != nil {
return err
}
log.Info("Setting Docker configuration on the remote daemon...")
if _, err = p.SSHCommand(fmt.Sprintf("printf %%s \"%s\" | sudo tee %s", dkrcfg.EngineOptions, dkrcfg.EngineOptionsPath)); err != nil {
return err
}
if err := p.Service("docker", serviceaction.Start); err != nil {
return err
}
return waitForDocker(p, dockerPort)
}
func matchNetstatOut(reDaemonListening, netstatOut string) bool {
// TODO: I would really prefer this be a Scanner directly on
// the STDOUT of the executed command than to do all the string
// manipulation hokey-pokey.
//
// TODO: Unit test this matching.
for _, line := range strings.Split(netstatOut, "\n") {
match, err := regexp.MatchString(reDaemonListening, line)
if err != nil {
log.Warnf("Regex warning: %s", err)
}
if match && line != "" {
return true
}
}
return false
}
func checkDaemonUp(p Provisioner, dockerPort int) func() bool {
reDaemonListening := fmt.Sprintf(":%d.*LISTEN", dockerPort)
return func() bool {
// HACK: Check netstat's output to see if anyone's listening on the Docker API port.
netstatOut, err := p.SSHCommand("netstat -a")
if err != nil {
log.Warnf("Error running SSH command: %s", err)
return false
}
return matchNetstatOut(reDaemonListening, netstatOut)
}
}
func waitForDocker(p Provisioner, dockerPort int) error {
if err := mcnutils.WaitForSpecific(checkDaemonUp(p, dockerPort), 5, 3*time.Second); err != nil {
return NewErrDaemonAvailable(err)
}
return nil
}