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coreos.go
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/
coreos.go
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package provision
import (
"bytes"
"fmt"
"text/template"
"github.com/docker/machine/libmachine/auth"
"github.com/docker/machine/libmachine/drivers"
"github.com/docker/machine/libmachine/engine"
"github.com/docker/machine/libmachine/log"
"github.com/docker/machine/libmachine/provision/pkgaction"
"github.com/docker/machine/libmachine/provision/serviceaction"
"github.com/docker/machine/libmachine/swarm"
)
const (
hostTmpl = `sudo tee /var/tmp/hostname.yml << EOF
#cloud-config
hostname: %s
EOF
`
)
func init() {
Register("CoreOS", &RegisteredProvisioner{
New: NewCoreOSProvisioner,
})
}
func NewCoreOSProvisioner(d drivers.Driver) Provisioner {
return &CoreOSProvisioner{
GenericProvisioner{
DockerOptionsDir: "/etc/docker",
DaemonOptionsFile: "/etc/systemd/system/docker.service",
OsReleaseId: "coreos",
Driver: d,
},
}
}
type CoreOSProvisioner struct {
GenericProvisioner
}
func (provisioner *CoreOSProvisioner) Service(name string, action serviceaction.ServiceAction) error {
// daemon-reload to catch config updates; systemd -- ugh
if _, err := provisioner.SSHCommand("sudo systemctl daemon-reload"); err != nil {
return err
}
command := fmt.Sprintf("sudo systemctl %s %s", action.String(), name)
if _, err := provisioner.SSHCommand(command); err != nil {
return err
}
// wait until docker is running
if (name == "docker") && (action.String() == "start") {
if err := waitForDocker(provisioner, 2376); err != nil {
return err
}
}
return nil
}
func (provisioner *CoreOSProvisioner) SetHostname(hostname string) error {
log.Debugf("SetHostname: %s", hostname)
if _, err := provisioner.SSHCommand(fmt.Sprintf(hostTmpl, hostname)); err != nil {
return err
}
if _, err := provisioner.SSHCommand("sudo systemctl start system-cloudinit@var-tmp-hostname.yml.service"); err != nil {
return err
}
return nil
}
func (provisioner *CoreOSProvisioner) GenerateDockerOptions(dockerPort int) (*DockerOptions, error) {
var (
engineCfg bytes.Buffer
)
driverNameLabel := fmt.Sprintf("provider=%s", provisioner.Driver.DriverName())
provisioner.EngineOptions.Labels = append(provisioner.EngineOptions.Labels, driverNameLabel)
engineConfigTmpl := `[Unit]
Description=Docker Socket for the API
After=docker.socket early-docker.target network.target
Requires=docker.socket early-docker.target
[Service]
Environment=TMPDIR=/var/tmp
EnvironmentFile=-/run/flannel_docker_opts.env
MountFlags=slave
LimitNOFILE=1048576
LimitNPROC=1048576
ExecStart=/usr/lib/coreos/dockerd --daemon --host=unix:///var/run/docker.sock --host=tcp://0.0.0.0:{{.DockerPort}} --tlsverify --tlscacert {{.AuthOptions.CaCertRemotePath}} --tlscert {{.AuthOptions.ServerCertRemotePath}} --tlskey {{.AuthOptions.ServerKeyRemotePath}}{{ range .EngineOptions.Labels }} --label {{.}}{{ end }}{{ range .EngineOptions.InsecureRegistry }} --insecure-registry {{.}}{{ end }}{{ range .EngineOptions.RegistryMirror }} --registry-mirror {{.}}{{ end }}{{ range .EngineOptions.ArbitraryFlags }} --{{.}}{{ end }} \$DOCKER_OPTS \$DOCKER_OPT_BIP \$DOCKER_OPT_MTU \$DOCKER_OPT_IPMASQ
[Install]
WantedBy=multi-user.target
`
t, err := template.New("engineConfig").Parse(engineConfigTmpl)
if err != nil {
return nil, err
}
engineConfigContext := EngineConfigContext{
DockerPort: dockerPort,
AuthOptions: provisioner.AuthOptions,
EngineOptions: provisioner.EngineOptions,
}
t.Execute(&engineCfg, engineConfigContext)
return &DockerOptions{
EngineOptions: engineCfg.String(),
EngineOptionsPath: provisioner.DaemonOptionsFile,
}, nil
}
func (provisioner *CoreOSProvisioner) Package(name string, action pkgaction.PackageAction) error {
return nil
}
func (provisioner *CoreOSProvisioner) Provision(swarmOptions swarm.SwarmOptions, authOptions auth.AuthOptions, engineOptions engine.EngineOptions) error {
provisioner.SwarmOptions = swarmOptions
provisioner.AuthOptions = authOptions
provisioner.EngineOptions = engineOptions
if err := provisioner.SetHostname(provisioner.Driver.GetMachineName()); err != nil {
return err
}
if err := makeDockerOptionsDir(provisioner); err != nil {
return err
}
log.Debugf("Preparing certificates")
provisioner.AuthOptions = setRemoteAuthOptions(provisioner)
log.Debugf("Setting up certificates")
if err := ConfigureAuth(provisioner); err != nil {
return err
}
return nil
}