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openstack.go
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package openstack
import (
"fmt"
"io/ioutil"
"net"
"strings"
"time"
"github.com/docker/machine/libmachine/drivers"
"github.com/docker/machine/libmachine/log"
"github.com/docker/machine/libmachine/mcnflag"
"github.com/docker/machine/libmachine/mcnutils"
"github.com/docker/machine/libmachine/ssh"
"github.com/docker/machine/libmachine/state"
)
type Driver struct {
*drivers.BaseDriver
AuthUrl string
ActiveTimeout int
Insecure bool
DomainID string
DomainName string
Username string
Password string
TenantName string
TenantId string
Region string
AvailabilityZone string
EndpointType string
MachineId string
FlavorName string
FlavorId string
ImageName string
ImageId string
KeyPairName string
NetworkName string
NetworkId string
PrivateKeyFile string
SecurityGroups []string
FloatingIpPool string
ComputeNetwork bool
FloatingIpPoolId string
IpVersion int
client Client
}
const (
defaultSSHUser = "root"
defaultSSHPort = 22
defaultActiveTimeout = 200
)
func (d *Driver) GetCreateFlags() []mcnflag.Flag {
return []mcnflag.Flag{
mcnflag.StringFlag{
EnvVar: "OS_AUTH_URL",
Name: "openstack-auth-url",
Usage: "OpenStack authentication URL",
Value: "",
},
mcnflag.BoolFlag{
EnvVar: "OS_INSECURE",
Name: "openstack-insecure",
Usage: "Disable TLS credential checking.",
},
mcnflag.StringFlag{
EnvVar: "OS_DOMAIN_ID",
Name: "openstack-domain-id",
Usage: "OpenStack domain ID (identity v3 only)",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_DOMAIN_NAME",
Name: "openstack-domain-name",
Usage: "OpenStack domain name (identity v3 only)",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_USERNAME",
Name: "openstack-username",
Usage: "OpenStack username",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_PASSWORD",
Name: "openstack-password",
Usage: "OpenStack password",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_TENANT_NAME",
Name: "openstack-tenant-name",
Usage: "OpenStack tenant name",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_TENANT_ID",
Name: "openstack-tenant-id",
Usage: "OpenStack tenant id",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_REGION_NAME",
Name: "openstack-region",
Usage: "OpenStack region name",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_AVAILABILITY_ZONE",
Name: "openstack-availability-zone",
Usage: "OpenStack availability zone",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_ENDPOINT_TYPE",
Name: "openstack-endpoint-type",
Usage: "OpenStack endpoint type (adminURL, internalURL or publicURL)",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_FLAVOR_ID",
Name: "openstack-flavor-id",
Usage: "OpenStack flavor id to use for the instance",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_FLAVOR_NAME",
Name: "openstack-flavor-name",
Usage: "OpenStack flavor name to use for the instance",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_IMAGE_ID",
Name: "openstack-image-id",
Usage: "OpenStack image id to use for the instance",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_IMAGE_NAME",
Name: "openstack-image-name",
Usage: "OpenStack image name to use for the instance",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_KEYPAIR_NAME",
Name: "openstack-keypair-name",
Usage: "OpenStack keypair to use to SSH to the instance",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_NETWORK_ID",
Name: "openstack-net-id",
Usage: "OpenStack network id the machine will be connected on",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_PRIVATE_KEY_FILE",
Name: "openstack-private-key-file",
Usage: "Private keyfile to use for SSH (absolute path)",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_NETWORK_NAME",
Name: "openstack-net-name",
Usage: "OpenStack network name the machine will be connected on",
Value: "",
},
mcnflag.StringFlag{
EnvVar: "OS_SECURITY_GROUPS",
Name: "openstack-sec-groups",
Usage: "OpenStack comma separated security groups for the machine",
Value: "",
},
mcnflag.BoolFlag{
EnvVar: "OS_NOVA_NETWORK",
Name: "openstack-nova-network",
Usage: "Use the nova networking services instead of neutron.",
},
mcnflag.StringFlag{
EnvVar: "OS_FLOATINGIP_POOL",
Name: "openstack-floatingip-pool",
Usage: "OpenStack floating IP pool to get an IP from to assign to the instance",
Value: "",
},
mcnflag.IntFlag{
EnvVar: "OS_IP_VERSION",
Name: "openstack-ip-version",
Usage: "OpenStack version of IP address assigned for the machine",
Value: 4,
},
mcnflag.StringFlag{
EnvVar: "OS_SSH_USER",
Name: "openstack-ssh-user",
Usage: "OpenStack SSH user",
Value: defaultSSHUser,
},
mcnflag.IntFlag{
EnvVar: "OS_SSH_PORT",
Name: "openstack-ssh-port",
Usage: "OpenStack SSH port",
Value: defaultSSHPort,
},
mcnflag.IntFlag{
EnvVar: "OS_ACTIVE_TIMEOUT",
Name: "openstack-active-timeout",
Usage: "OpenStack active timeout",
Value: defaultActiveTimeout,
},
}
}
func NewDriver(hostName, storePath string) drivers.Driver {
return NewDerivedDriver(hostName, storePath)
}
func NewDerivedDriver(hostName, storePath string) *Driver {
return &Driver{
client: &GenericClient{},
ActiveTimeout: defaultActiveTimeout,
BaseDriver: &drivers.BaseDriver{
SSHUser: defaultSSHUser,
SSHPort: defaultSSHPort,
MachineName: hostName,
StorePath: storePath,
},
}
}
func (d *Driver) GetSSHHostname() (string, error) {
return d.GetIP()
}
func (d *Driver) SetClient(client Client) {
d.client = client
}
// DriverName returns the name of the driver
func (d *Driver) DriverName() string {
return "openstack"
}
func (d *Driver) SetConfigFromFlags(flags drivers.DriverOptions) error {
d.AuthUrl = flags.String("openstack-auth-url")
d.ActiveTimeout = flags.Int("openstack-active-timeout")
d.Insecure = flags.Bool("openstack-insecure")
d.DomainID = flags.String("openstack-domain-id")
d.DomainName = flags.String("openstack-domain-name")
d.Username = flags.String("openstack-username")
d.Password = flags.String("openstack-password")
d.TenantName = flags.String("openstack-tenant-name")
d.TenantId = flags.String("openstack-tenant-id")
d.Region = flags.String("openstack-region")
d.AvailabilityZone = flags.String("openstack-availability-zone")
d.EndpointType = flags.String("openstack-endpoint-type")
d.FlavorId = flags.String("openstack-flavor-id")
d.FlavorName = flags.String("openstack-flavor-name")
d.ImageId = flags.String("openstack-image-id")
d.ImageName = flags.String("openstack-image-name")
d.NetworkId = flags.String("openstack-net-id")
d.NetworkName = flags.String("openstack-net-name")
if flags.String("openstack-sec-groups") != "" {
d.SecurityGroups = strings.Split(flags.String("openstack-sec-groups"), ",")
}
d.FloatingIpPool = flags.String("openstack-floatingip-pool")
d.IpVersion = flags.Int("openstack-ip-version")
d.ComputeNetwork = flags.Bool("openstack-nova-network")
d.SSHUser = flags.String("openstack-ssh-user")
d.SSHPort = flags.Int("openstack-ssh-port")
d.KeyPairName = flags.String("openstack-keypair-name")
d.PrivateKeyFile = flags.String("openstack-private-key-file")
d.SetSwarmConfigFromFlags(flags)
return d.checkConfig()
}
func (d *Driver) GetURL() (string, error) {
if err := drivers.MustBeRunning(d); err != nil {
return "", err
}
ip, err := d.GetIP()
if err != nil {
return "", err
}
if ip == "" {
return "", nil
}
return fmt.Sprintf("tcp://%s", net.JoinHostPort(ip, "2376")), nil
}
func (d *Driver) GetIP() (string, error) {
if d.IPAddress != "" {
return d.IPAddress, nil
}
log.Debug("Looking for the IP address...", map[string]string{"MachineId": d.MachineId})
if err := d.initCompute(); err != nil {
return "", err
}
addressType := Fixed
if d.FloatingIpPool != "" {
addressType = Floating
}
// Looking for the IP address in a retry loop to deal with OpenStack latency
for retryCount := 0; retryCount < 200; retryCount++ {
addresses, err := d.client.GetInstanceIPAddresses(d)
if err != nil {
return "", err
}
for _, a := range addresses {
if a.AddressType == addressType && a.Version == d.IpVersion {
return a.Address, nil
}
}
time.Sleep(2 * time.Second)
}
return "", fmt.Errorf("No IP found for the machine")
}
func (d *Driver) GetState() (state.State, error) {
log.Debug("Get status for OpenStack instance...", map[string]string{"MachineId": d.MachineId})
if err := d.initCompute(); err != nil {
return state.None, err
}
s, err := d.client.GetInstanceState(d)
if err != nil {
return state.None, err
}
log.Debug("State for OpenStack instance", map[string]string{
"MachineId": d.MachineId,
"State": s,
})
switch s {
case "ACTIVE":
return state.Running, nil
case "PAUSED":
return state.Paused, nil
case "SUSPENDED":
return state.Saved, nil
case "SHUTOFF":
return state.Stopped, nil
case "BUILDING":
return state.Starting, nil
case "ERROR":
return state.Error, nil
}
return state.None, nil
}
func (d *Driver) Create() error {
if err := d.resolveIds(); err != nil {
return err
}
if d.KeyPairName != "" {
if err := d.loadSSHKey(); err != nil {
return err
}
} else {
d.KeyPairName = fmt.Sprintf("%s-%s", d.MachineName, mcnutils.GenerateRandomID())
if err := d.createSSHKey(); err != nil {
return err
}
}
if err := d.createMachine(); err != nil {
return err
}
if err := d.waitForInstanceActive(); err != nil {
return err
}
if d.FloatingIpPool != "" {
if err := d.assignFloatingIP(); err != nil {
return err
}
}
if err := d.lookForIPAddress(); err != nil {
return err
}
return nil
}
func (d *Driver) Start() error {
if err := d.initCompute(); err != nil {
return err
}
return d.client.StartInstance(d)
}
func (d *Driver) Stop() error {
if err := d.initCompute(); err != nil {
return err
}
return d.client.StopInstance(d)
}
func (d *Driver) Restart() error {
if err := d.initCompute(); err != nil {
return err
}
return d.client.RestartInstance(d)
}
func (d *Driver) Kill() error {
return d.Stop()
}
func (d *Driver) Remove() error {
log.Debug("deleting instance...", map[string]string{"MachineId": d.MachineId})
log.Info("Deleting OpenStack instance...")
if err := d.initCompute(); err != nil {
return err
}
if err := d.client.DeleteInstance(d); err != nil {
return err
}
log.Debug("deleting key pair...", map[string]string{"Name": d.KeyPairName})
// TODO (fsoppelsa) maybe we want to check this, in case of shared keypairs, before removal
if err := d.client.DeleteKeyPair(d, d.KeyPairName); err != nil {
return err
}
return nil
}
const (
errorMandatoryEnvOrOption string = "%s must be specified either using the environment variable %s or the CLI option %s"
errorMandatoryOption string = "%s must be specified using the CLI option %s"
errorExclusiveOptions string = "Either %s or %s must be specified, not both"
errorBothOptions string = "Both %s and %s must be specified"
errorMandatoryTenantNameOrID string = "Tenant id or name must be provided either using one of the environment variables OS_TENANT_ID and OS_TENANT_NAME or one of the CLI options --openstack-tenant-id and --openstack-tenant-name"
errorWrongEndpointType string = "Endpoint type must be 'publicURL', 'adminURL' or 'internalURL'"
errorUnknownFlavorName string = "Unable to find flavor named %s"
errorUnknownImageName string = "Unable to find image named %s"
errorUnknownNetworkName string = "Unable to find network named %s"
errorUnknownTenantName string = "Unable to find tenant named %s"
)
func (d *Driver) checkConfig() error {
if d.AuthUrl == "" {
return fmt.Errorf(errorMandatoryEnvOrOption, "Authentication URL", "OS_AUTH_URL", "--openstack-auth-url")
}
if d.Username == "" {
return fmt.Errorf(errorMandatoryEnvOrOption, "Username", "OS_USERNAME", "--openstack-username")
}
if d.Password == "" {
return fmt.Errorf(errorMandatoryEnvOrOption, "Password", "OS_PASSWORD", "--openstack-password")
}
if d.TenantName == "" && d.TenantId == "" {
return fmt.Errorf(errorMandatoryTenantNameOrID)
}
if d.FlavorName == "" && d.FlavorId == "" {
return fmt.Errorf(errorMandatoryOption, "Flavor name or Flavor id", "--openstack-flavor-name or --openstack-flavor-id")
}
if d.FlavorName != "" && d.FlavorId != "" {
return fmt.Errorf(errorExclusiveOptions, "Flavor name", "Flavor id")
}
if d.ImageName == "" && d.ImageId == "" {
return fmt.Errorf(errorMandatoryOption, "Image name or Image id", "--openstack-image-name or --openstack-image-id")
}
if d.ImageName != "" && d.ImageId != "" {
return fmt.Errorf(errorExclusiveOptions, "Image name", "Image id")
}
if d.NetworkName != "" && d.NetworkId != "" {
return fmt.Errorf(errorExclusiveOptions, "Network name", "Network id")
}
if d.EndpointType != "" && (d.EndpointType != "publicURL" && d.EndpointType != "adminURL" && d.EndpointType != "internalURL") {
return fmt.Errorf(errorWrongEndpointType)
}
if (d.KeyPairName != "" && d.PrivateKeyFile == "") || (d.KeyPairName == "" && d.PrivateKeyFile != "") {
return fmt.Errorf(errorBothOptions, "KeyPairName", "PrivateKeyFile")
}
return nil
}
func (d *Driver) resolveIds() error {
if d.NetworkName != "" && !d.ComputeNetwork {
if err := d.initNetwork(); err != nil {
return err
}
networkID, err := d.client.GetNetworkID(d)
if err != nil {
return err
}
if networkID == "" {
return fmt.Errorf(errorUnknownNetworkName, d.NetworkName)
}
d.NetworkId = networkID
log.Debug("Found network id using its name", map[string]string{
"Name": d.NetworkName,
"ID": d.NetworkId,
})
}
if d.FlavorName != "" {
if err := d.initCompute(); err != nil {
return err
}
flavorID, err := d.client.GetFlavorID(d)
if err != nil {
return err
}
if flavorID == "" {
return fmt.Errorf(errorUnknownFlavorName, d.FlavorName)
}
d.FlavorId = flavorID
log.Debug("Found flavor id using its name", map[string]string{
"Name": d.FlavorName,
"ID": d.FlavorId,
})
}
if d.ImageName != "" {
if err := d.initCompute(); err != nil {
return err
}
imageID, err := d.client.GetImageID(d)
if err != nil {
return err
}
if imageID == "" {
return fmt.Errorf(errorUnknownImageName, d.ImageName)
}
d.ImageId = imageID
log.Debug("Found image id using its name", map[string]string{
"Name": d.ImageName,
"ID": d.ImageId,
})
}
if d.FloatingIpPool != "" && !d.ComputeNetwork {
if err := d.initNetwork(); err != nil {
return err
}
f, err := d.client.GetFloatingIPPoolID(d)
if err != nil {
return err
}
if f == "" {
return fmt.Errorf(errorUnknownNetworkName, d.FloatingIpPool)
}
d.FloatingIpPoolId = f
log.Debug("Found floating IP pool id using its name", map[string]string{
"Name": d.FloatingIpPool,
"ID": d.FloatingIpPoolId,
})
}
if d.TenantName != "" && d.TenantId == "" {
if err := d.initIdentity(); err != nil {
return err
}
tenantId, err := d.client.GetTenantID(d)
if err != nil {
return err
}
if tenantId == "" {
return fmt.Errorf(errorUnknownTenantName, d.TenantName)
}
d.TenantId = tenantId
log.Debug("Found tenant id using its name", map[string]string{
"Name": d.TenantName,
"ID": d.TenantId,
})
}
return nil
}
func (d *Driver) initCompute() error {
if err := d.client.Authenticate(d); err != nil {
return err
}
if err := d.client.InitComputeClient(d); err != nil {
return err
}
return nil
}
func (d *Driver) initIdentity() error {
if err := d.client.Authenticate(d); err != nil {
return err
}
if err := d.client.InitIdentityClient(d); err != nil {
return err
}
return nil
}
func (d *Driver) initNetwork() error {
if err := d.client.Authenticate(d); err != nil {
return err
}
if err := d.client.InitNetworkClient(d); err != nil {
return err
}
return nil
}
func (d *Driver) loadSSHKey() error {
log.Debug("Loading Key Pair", d.KeyPairName)
if err := d.initCompute(); err != nil {
return err
}
log.Debug("Loading Private Key from", d.PrivateKeyFile)
privateKey, err := ioutil.ReadFile(d.PrivateKeyFile)
if err != nil {
return err
}
publicKey, err := d.client.GetPublicKey(d.KeyPairName)
if err != nil {
return err
}
if err := ioutil.WriteFile(d.privateSSHKeyPath(), privateKey, 0600); err != nil {
return err
}
if err := ioutil.WriteFile(d.publicSSHKeyPath(), publicKey, 0600); err != nil {
return err
}
return nil
}
func (d *Driver) createSSHKey() error {
sanitizeKeyPairName(&d.KeyPairName)
log.Debug("Creating Key Pair...", map[string]string{"Name": d.KeyPairName})
if err := ssh.GenerateSSHKey(d.GetSSHKeyPath()); err != nil {
return err
}
publicKey, err := ioutil.ReadFile(d.publicSSHKeyPath())
if err != nil {
return err
}
if err := d.initCompute(); err != nil {
return err
}
if err := d.client.CreateKeyPair(d, d.KeyPairName, string(publicKey)); err != nil {
return err
}
return nil
}
func (d *Driver) createMachine() error {
log.Debug("Creating OpenStack instance...", map[string]string{
"FlavorId": d.FlavorId,
"ImageId": d.ImageId,
})
if err := d.initCompute(); err != nil {
return err
}
instanceID, err := d.client.CreateInstance(d)
if err != nil {
return err
}
d.MachineId = instanceID
return nil
}
func (d *Driver) assignFloatingIP() error {
var err error
if d.ComputeNetwork {
err = d.initCompute()
} else {
err = d.initNetwork()
}
if err != nil {
return err
}
ips, err := d.client.GetFloatingIPs(d)
if err != nil {
return err
}
var floatingIP *FloatingIP
log.Debugf("Looking for an available floating IP", map[string]string{
"MachineId": d.MachineId,
"Pool": d.FloatingIpPool,
})
for _, ip := range ips {
if ip.PortId == "" {
log.Debug("Available floating IP found", map[string]string{
"MachineId": d.MachineId,
"IP": ip.Ip,
})
floatingIP = &ip
break
}
}
if floatingIP == nil {
floatingIP = &FloatingIP{}
log.Debug("No available floating IP found. Allocating a new one...", map[string]string{"MachineId": d.MachineId})
} else {
log.Debug("Assigning floating IP to the instance", map[string]string{"MachineId": d.MachineId})
}
if err := d.client.AssignFloatingIP(d, floatingIP); err != nil {
return err
}
d.IPAddress = floatingIP.Ip
return nil
}
func (d *Driver) waitForInstanceActive() error {
log.Debug("Waiting for the OpenStack instance to be ACTIVE...", map[string]string{"MachineId": d.MachineId})
if err := d.client.WaitForInstanceStatus(d, "ACTIVE"); err != nil {
return err
}
return nil
}
func (d *Driver) lookForIPAddress() error {
ip, err := d.GetIP()
if err != nil {
return err
}
d.IPAddress = ip
log.Debug("IP address found", map[string]string{
"IP": ip,
"MachineId": d.MachineId,
})
return nil
}
func (d *Driver) privateSSHKeyPath() string {
return d.GetSSHKeyPath()
}
func (d *Driver) publicSSHKeyPath() string {
return d.GetSSHKeyPath() + ".pub"
}
func sanitizeKeyPairName(s *string) {
*s = strings.Replace(*s, ".", "_", -1)
}